all: introduce a temperature type

This type should be used whenever a sensor (or actuator?) works with a temperature. For example, this commit changes the signature: ReadTemperature() (int32, error) to the following: ReadTemperature() (drivers.Temperature, error) I believe this is much clearer in intent. It also makes it trivial to introduce common conversions. For example, there are already Celsius() and Fahrenheit() methods to convert to the given units, as a floating point. More units could be added as needed, for example a CelsiusInt().
2026-07-26 18:48:41 +00:00 · 2021-10-21 23:25:42 +02:00
95 changed files with 466 additions and 4334 deletions
@@ -1,35 +1,3 @@
-0.18.0
---
- **new devices**
-    - apds9960: add support for APDS-9960 Digital Proximity sensor
-    - axp192: add support for AXP192 single Cell Li-Battery and power system management IC
-    - hts221: add support for HTS221 capacitive digital sensor for relative humidity and temperature
-    - i2csoft: add support for software I2C
-    - image: add support for image/jpeg and image/png
-    - lps22hb: add support for LPS22HB MEMS nano pressure sensor
-    - lsm6dox: add support for lsm6dox accelerometer
-    - lsm9ds1: add support for lsm9ds1 accelerometer
- **enhancements**
-    - ili9341: change to use drivers.SPI interface
-    - **ws2812**
-        - generate assembly instead of handwriting it
-        - improve timings to be compatible with the WS2811
-        - add support for 168MHz (e.g. Adafruit Feather STM32F405)
-        - add support for RISC-V
-    - wifinina: control nina pins, for example leds
- **docs**
-    - rtl8720dn: examples for tcpclient, udpstation, mqtt, and webserver
-    - **wifinina** 
-        - nina-fw update docs
-        - examples/wifinina/http-get
-    - ili9341: refactor examples
-    - Fix broken link for SHT3x datasheet
- **core**
-    - all: use build directives for both Go1.17 and earlier versions
- **bugfixes**
-    - net: fix raddr of tcp conn
-    - mcp3008: fix bitshift bug
-
 0.17.1
 ---
 - To correct an error in the release process. Same as 0.17.0.
@@ -17,8 +17,6 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/main.go
 	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/apds9960/proximity/main.go
-	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/itsybitsy-m0/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/at24cx/main.go
@@ -65,8 +63,6 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/hd44780i2c/main.go
 	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/hts221/main.go
-	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hub75/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/basic
@@ -83,8 +79,6 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis3dh/main.go
 	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/lps22hb/main.go
-	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/lsm303agr/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/lsm6ds3/main.go
@@ -211,19 +205,15 @@ endif
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=wioterminal ./examples/rtl8720dn/mqttsub/
 	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/i2csoft/adt7410/
-	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.elf -target=wioterminal ./examples/axp192/m5stack-core2-blinky/
-	@md5sum ./build/test.hex

 DRIVERS = $(wildcard */)
 NOTESTS = build examples flash semihosting pcd8544 shiftregister st7789 microphone mcp3008 gps microbitmatrix \
 		hcsr04 ssd1331 ws2812 thermistor apa102 easystepper ssd1351 ili9341 wifinina shifter hub75 \
 		hd44780 buzzer ssd1306 espat l9110x st7735 bmi160 l293x dht keypad4x4 max72xx p1am tone tm1637 \
-		pcf8563 mcp2515 servo sdcard rtl8720dn image cmd i2csoft hts221 lps22hb apds9960 axp192
+		pcf8563 mcp2515 servo sdcard rtl8720dn image cmd
 TESTS = $(filter-out $(addsuffix /%,$(NOTESTS)),$(DRIVERS))

 unit-test:
-	@go test -v $(addprefix ./,$(TESTS)) 
+	@go test -v . $(addprefix ./,$(TESTS)) 

 test: clean fmt-check unit-test smoke-test
@@ -52,7 +52,7 @@ func main() {

 ## Currently supported devices

-The following 74 devices are supported.
+The following 67 devices are supported.

 | Device Name | Interface Type |
 |----------|-------------|
@@ -61,9 +61,7 @@ The following 74 devices are supported.
 | [AHT20 I2C Temperature and Humidity Sensor](http://www.aosong.com/userfiles/files/media/AHT20%20%E8%8B%B1%E6%96%87%E7%89%88%E8%AF%B4%E6%98%8E%E4%B9%A6%20A0%2020201222.pdf) | I2C |
 | [AMG88xx 8x8 Thermal camera sensor](https://cdn-learn.adafruit.com/assets/assets/000/043/261/original/Grid-EYE_SPECIFICATIONS%28Reference%29.pdf) | I2C |
 | [APA102 RGB LED](https://cdn-shop.adafruit.com/product-files/2343/APA102C.pdf) | SPI |
-| [APDS9960 Digital proximity, ambient light, RGB and gesture sensor](https://cdn.sparkfun.com/assets/learn_tutorials/3/2/1/Avago-APDS-9960-datasheet.pdf) | I2C |
 | [AT24CX 2-wire serial EEPROM](https://www.openimpulse.com/blog/wp-content/uploads/wpsc/downloadables/24C32-Datasheet.pdf) | I2C |
-| [AXP192 single Cell Li-Battery and Power System Management](https://github.com/m5stack/M5-Schematic/blob/master/Core/AXP192%20Datasheet_v1.1_en_draft_2211.pdf) | I2C |
 | [BBC micro:bit LED matrix](https://github.com/bbcmicrobit/hardware/blob/master/SCH_BBC-Microbit_V1.3B.pdf) | GPIO |
 | [BH1750 ambient light sensor](https://www.mouser.com/ds/2/348/bh1750fvi-e-186247.pdf) | I2C |
 | [BlinkM RGB LED](http://thingm.com/fileadmin/thingm/downloads/BlinkM_datasheet.pdf) | I2C |
@@ -81,9 +79,7 @@ The following 74 devices are supported.
 | [GPS module](https://www.u-blox.com/en/product/neo-6-series) | I2C/UART |
 | [HC-SR04 Ultrasonic distance sensor](https://cdn.sparkfun.com/datasheets/Sensors/Proximity/HCSR04.pdf) | GPIO |
 | [HD44780 LCD controller](https://www.sparkfun.com/datasheets/LCD/HD44780.pdf) | GPIO/I2C |
-| [HTS221 digital humidity and temperature sensor](https://www.st.com/resource/en/datasheet/hts221.pdf) | I2C |
 | [HUB75 RGB led matrix](https://cdn-learn.adafruit.com/downloads/pdf/32x16-32x32-rgb-led-matrix.pdf) | SPI |
-| [software I2C driver](https://www.ti.com/lit/an/slva704/slva704.pdf) | GPIO |
 | [ILI9341 TFT color display](https://cdn-shop.adafruit.com/datasheets/ILI9341.pdf) | SPI |
 | [INA260 Volt/Amp/Power meter](https://www.ti.com/lit/ds/symlink/ina260.pdf) | I2C |
 | [4x4 Membrane Keypad](https://cdn.sparkfun.com/assets/f/f/a/5/0/DS-16038.pdf) | GPIO |
@@ -91,16 +87,12 @@ The following 74 devices are supported.
 | [L9110x motor driver](https://www.elecrow.com/download/datasheet-l9110.pdf) | GPIO/PWM |
 | [LIS2MDL magnetometer](https://www.st.com/resource/en/datasheet/lis2mdl.pdf) | I2C |
 | [LIS3DH accelerometer](https://www.st.com/resource/en/datasheet/lis3dh.pdf) | I2C |
-| [LPS22HB MEMS nano pressure sensor](https://www.st.com/resource/en/datasheet/dm00140895.pdf) | I2C |
 | [LSM6DS3 accelerometer](https://www.st.com/resource/en/datasheet/lsm6ds3.pdf) | I2C |
-| [LSM6DSOX accelerometer](https://www.st.com/resource/en/datasheet/lsm6dsox.pdf) | I2C |
-| [LSM303AGR accelerometer](https://www.st.com/resource/en/datasheet/lsm303agr.pdf) | I2C |
-| [LSM9DS1 accelerometer](https://www.st.com/resource/en/datasheet/lsm9ds1.pdf) | I2C |
 | [MAG3110 magnetometer](https://www.nxp.com/docs/en/data-sheet/MAG3110.pdf) | I2C |
 | [MAX7219 & MAX7221 display driver](https://datasheets.maximintegrated.com/en/ds/MAX7219-MAX7221.pdf) | SPI |
-| [MCP2515 Stand-Alone CAN Controller with SPI Interface](https://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Family-Data-Sheet-DS20001801K.pdf) | SPI |
-| [MCP3008 analog to digital converter (ADC)](http://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf) | SPI |
 | [MCP23017 port expander](https://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf) | I2C |
+| [MCP3008 analog to digital converter (ADC)](http://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf) | SPI |
+| [MCP2515 Stand-Alone CAN Controller with SPI Interface](https://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Family-Data-Sheet-DS20001801K.pdf) | SPI |
 | [Microphone - PDM](https://cdn-learn.adafruit.com/assets/assets/000/049/977/original/MP34DT01-M.pdf) | I2S/PDM |
 | [MMA8653 accelerometer](https://www.nxp.com/docs/en/data-sheet/MMA8653FC.pdf) | I2C |
 | [MPU6050 accelerometer/gyroscope](https://store.invensense.com/datasheets/invensense/MPU-6050_DataSheet_V3%204.pdf) | I2C |
@@ -113,7 +105,7 @@ The following 74 devices are supported.
 | [Servo](https://learn.sparkfun.com/tutorials/hobby-servo-tutorial/all) | PWM |
 | [Shift register (PISO)](https://en.wikipedia.org/wiki/Shift_register#Parallel-in_serial-out_\(PISO\)) | GPIO |
 | [Shift registers (SIPO)](https://en.wikipedia.org/wiki/Shift_register#Serial-in_parallel-out_(SIPO)) | GPIO |
-| [SHT3x Digital Humidity Sensor](https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Datasheets/Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf) | I2C |
+| [SHT3x Digital Humidity Sensor](https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/0_Datasheets/Humidity/Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf) | I2C |
 | [SPI NOR Flash Memory](https://en.wikipedia.org/wiki/Flash_memory#NOR_flash) | SPI/QSPI |
 | [SPI SDCARD/MMC](https://en.wikipedia.org/wiki/SD_card) | SPI |
 | [SSD1306 OLED display](https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf) | I2C / SPI |
@@ -60,19 +60,8 @@ func (d *Device) Connected() bool {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (temperature int32, err error) {
-	return (int32(d.readUint16(RegTempValueMSB)) * 1000) / 128, nil
-}
-
-// ReadTempC returns the value in the temperature value register, in Celsius.
-func (d *Device) ReadTempC() float32 {
-	t := d.readUint16(RegTempValueMSB)
-	return float32(int(t)) / 128.0
-}
-
-// ReadTempF returns the value in the temperature value register, in Fahrenheit.
-func (d *Device) ReadTempF() float32 {
-	return d.ReadTempC()*1.8 + 32.0
+func (d *Device) ReadTemperature() (temperature drivers.Temperature, err error) {
+	return (drivers.Temperature(d.readUint16(RegTempValueMSB)) * 1000) / 128, nil
 }

 func (d *Device) writeByte(reg uint8, data byte) {
@@ -1,461 +0,0 @@
-// Package apds9960 implements a driver for APDS-9960,
-// a digital proximity, ambient light, RGB and gesture sensor.
-//
-// Datasheet: https://cdn.sparkfun.com/assets/learn_tutorials/3/2/1/Avago-APDS-9960-datasheet.pdf
-//
-package apds9960
-
-import (
-	"time"
-
-	"tinygo.org/x/drivers"
-)
-
-// Device wraps an I2C connection to a APDS-9960 device.
-type Device struct {
-	bus     drivers.I2C
-	Address uint8
-	mode    uint8
-	gesture gestureData
-}
-
-// Configuration for APDS-9960 device.
-type Configuration struct {
-	ProximityPulseLength uint8
-	ProximityPulseCount  uint8
-	GesturePulseLength   uint8
-	GesturePulseCount    uint8
-	ProximityGain        uint8
-	GestureGain          uint8
-	ColorGain            uint8
-	ADCIntegrationCycles uint16
-	LEDBoost             uint16
-	threshold            uint8
-	sensitivity          uint8
-}
-
-// for gesture-related data
-type gestureData struct {
-	detected    uint8
-	threshold   uint8
-	sensitivity uint8
-	gXDelta     int16
-	gYDelta     int16
-	gXPrevDelta int16
-	gYPrevDelta int16
-	received    bool
-}
-
-// for enabling various device function
-type enableConfig struct {
-	GEN  bool
-	PIEN bool
-	AIEN bool
-	WEN  bool
-	PEN  bool
-	AEN  bool
-	PON  bool
-}
-
-// Connected returns whether APDS-9960 has been found.
-// It does a "who am I" request and checks the response.
-func (d *Device) Connected() bool {
-	data := []byte{0}
-	d.bus.ReadRegister(d.Address, APDS9960_ID_REG, data)
-	return data[0] == 0xAB
-}
-
-// Configure sets up the APDS-9960 device.
-func (d *Device) Configure(cfg Configuration) {
-	d.DisableAll() // turn off everything
-
-	// "default" settings
-	if cfg.ProximityPulseLength == 0 {
-		cfg.ProximityPulseLength = 16
-	}
-	if cfg.ProximityPulseCount == 0 {
-		cfg.ProximityPulseCount = 64
-	}
-	if cfg.GesturePulseLength == 0 {
-		cfg.GesturePulseLength = 16
-	}
-	if cfg.GesturePulseCount == 0 {
-		cfg.GesturePulseCount = 64
-	}
-	if cfg.ProximityGain == 0 {
-		cfg.ProximityGain = 1
-	}
-	if cfg.GestureGain == 0 {
-		cfg.GestureGain = 1
-	}
-	if cfg.ColorGain == 0 {
-		cfg.ColorGain = 4
-	}
-	if cfg.ADCIntegrationCycles == 0 {
-		cfg.ADCIntegrationCycles = 4
-	}
-	if cfg.threshold == 0 {
-		d.gesture.threshold = 30
-	}
-	if cfg.sensitivity == 0 {
-		d.gesture.sensitivity = 20
-	}
-
-	d.SetProximityPulse(cfg.ProximityPulseLength, cfg.ProximityPulseCount)
-	d.SetGesturePulse(cfg.GesturePulseLength, cfg.GesturePulseCount)
-	d.SetGains(cfg.ProximityGain, cfg.GestureGain, cfg.ColorGain)
-	d.SetADCIntegrationCycles(cfg.ADCIntegrationCycles)
-
-	if cfg.LEDBoost > 0 {
-		d.LEDBoost(cfg.LEDBoost)
-	}
-}
-
-// GetMode returns current engine mode
-func (d *Device) GetMode() uint8 {
-	return d.mode
-}
-
-// DisableAll turns off the device and all functions
-func (d *Device) DisableAll() {
-	d.enable(enableConfig{})
-	d.bus.WriteRegister(d.Address, APDS9960_GCONF4_REG, []byte{0x00})
-	d.mode = MODE_NONE
-	d.gesture.detected = GESTURE_NONE
-}
-
-// SetProximityPulse sets proximity pulse length (4, 8, 16, 32) and count (1~64)
-// default: 16, 64
-func (d *Device) SetProximityPulse(length, count uint8) {
-	d.bus.WriteRegister(d.Address, APDS9960_PPULSE_REG, []byte{getPulseLength(length)<<6 | getPulseCount(count)})
-}
-
-// SetGesturePulse sets gesture pulse length (4, 8, 16, 32) and count (1~64)
-// default: 16, 64
-func (d *Device) SetGesturePulse(length, count uint8) {
-	d.bus.WriteRegister(d.Address, APDS9960_GPULSE_REG, []byte{getPulseLength(length)<<6 | getPulseCount(count)})
-}
-
-// SetADCIntegrationCycles sets ALS/color ADC internal integration cycles (1~256, 1 cycle = 2.78 ms)
-// default: 4 (~10 ms)
-func (d *Device) SetADCIntegrationCycles(cycles uint16) {
-	if cycles > 256 {
-		cycles = 256
-	}
-	d.bus.WriteRegister(d.Address, APDS9960_ATIME_REG, []byte{uint8(256 - cycles)})
-}
-
-// SetGains sets proximity/gesture gain (1, 2, 4, 8x) and ALS/color gain (1, 4, 16, 64x)
-// default: 1, 1, 4
-func (d *Device) SetGains(proximityGain, gestureGain, colorGain uint8) {
-	d.bus.WriteRegister(d.Address, APDS9960_CONTROL_REG, []byte{getProximityGain(proximityGain)<<2 | getALSGain(colorGain)})
-	d.bus.WriteRegister(d.Address, APDS9960_GCONF2_REG, []byte{getProximityGain(gestureGain) << 5})
-}
-
-// LEDBoost sets proximity and gesture LED current level (100, 150, 200, 300 (%))
-// default: 100
-func (d *Device) LEDBoost(percent uint16) {
-	var v uint8
-	switch percent {
-	case 100:
-		v = 0
-	case 150:
-		v = 1
-	case 200:
-		v = 2
-	case 300:
-		v = 3
-	}
-	d.bus.WriteRegister(d.Address, APDS9960_CONFIG2_REG, []byte{0x01 | v<<4})
-}
-
-// Setthreshold sets threshold (0~255) for detecting gestures
-// default: 30
-func (d *Device) Setthreshold(t uint8) {
-	d.gesture.threshold = t
-}
-
-// Setsensitivity sets sensivity (0~100) for detecting gestures
-// default: 20
-func (d *Device) Setsensitivity(s uint8) {
-	if s > 100 {
-		s = 100
-	}
-	d.gesture.sensitivity = 100 - s
-}
-
-// EnableProximity starts the proximity engine
-func (d *Device) EnableProximity() {
-	if d.mode != MODE_NONE {
-		d.DisableAll()
-	}
-	d.enable(enableConfig{PON: true, PEN: true, WEN: true})
-	d.mode = MODE_PROXIMITY
-}
-
-// ProximityAvailable reports if proximity data is available
-func (d *Device) ProximityAvailable() bool {
-	if d.mode == MODE_PROXIMITY && d.readStatus("PVALID") {
-		return true
-	}
-	return false
-}
-
-// ReadProximity reads proximity data (0~255)
-func (d *Device) ReadProximity() (proximity int32) {
-	if d.mode != MODE_PROXIMITY {
-		return 0
-	}
-	data := []byte{0}
-	d.bus.ReadRegister(d.Address, APDS9960_PDATA_REG, data)
-	return 255 - int32(data[0])
-}
-
-// EnableColor starts the color engine
-func (d *Device) EnableColor() {
-	if d.mode != MODE_NONE {
-		d.DisableAll()
-	}
-	d.enable(enableConfig{PON: true, AEN: true, WEN: true})
-	d.mode = MODE_COLOR
-}
-
-// ColorAvailable reports if color data is available
-func (d *Device) ColorAvailable() bool {
-	if d.mode == MODE_COLOR && d.readStatus("AVALID") {
-		return true
-	}
-	return false
-}
-
-// ReadColor reads color data (red, green, blue, clear color/brightness)
-func (d *Device) ReadColor() (r int32, g int32, b int32, clear int32) {
-	if d.mode != MODE_COLOR {
-		return
-	}
-	data := []byte{0, 0, 0, 0, 0, 0, 0, 0}
-	d.bus.ReadRegister(d.Address, APDS9960_CDATAL_REG, data[:1])
-	d.bus.ReadRegister(d.Address, APDS9960_CDATAH_REG, data[1:2])
-	d.bus.ReadRegister(d.Address, APDS9960_RDATAL_REG, data[2:3])
-	d.bus.ReadRegister(d.Address, APDS9960_RDATAH_REG, data[3:4])
-	d.bus.ReadRegister(d.Address, APDS9960_GDATAL_REG, data[4:5])
-	d.bus.ReadRegister(d.Address, APDS9960_GDATAH_REG, data[5:6])
-	d.bus.ReadRegister(d.Address, APDS9960_BDATAL_REG, data[6:7])
-	d.bus.ReadRegister(d.Address, APDS9960_BDATAH_REG, data[7:])
-	clear = int32(uint16(data[1])<<8 | uint16(data[0]))
-	r = int32(uint16(data[3])<<8 | uint16(data[2]))
-	g = int32(uint16(data[5])<<8 | uint16(data[4]))
-	b = int32(uint16(data[7])<<8 | uint16(data[6]))
-	return
-}
-
-// EnableGesture starts the gesture engine
-func (d *Device) EnableGesture() {
-	if d.mode != MODE_NONE {
-		d.DisableAll()
-	}
-	d.enable(enableConfig{PON: true, PEN: true, GEN: true, WEN: true})
-	d.mode = MODE_GESTURE
-	d.gesture.detected = GESTURE_NONE
-	d.gesture.gXDelta = 0
-	d.gesture.gYDelta = 0
-	d.gesture.gXPrevDelta = 0
-	d.gesture.gYPrevDelta = 0
-	d.gesture.received = false
-}
-
-// GestureAvailable reports if gesture data is available
-func (d *Device) GestureAvailable() bool {
-	if d.mode != MODE_GESTURE {
-		return false
-	}
-
-	data := []byte{0, 0, 0, 0}
-
-	// check GVALID
-	d.bus.ReadRegister(d.Address, APDS9960_GSTATUS_REG, data[:1])
-	if data[0]&0x01 == 0 {
-		return false
-	}
-
-	// get number of data sets available in FIFO
-	d.bus.ReadRegister(d.Address, APDS9960_GFLVL_REG, data[:1])
-	availableDataSets := data[0]
-	if availableDataSets == 0 {
-		return false
-	}
-
-	// read up, down, left and right proximity data from FIFO
-	var dataSets [32][4]uint8
-	for i := uint8(0); i < availableDataSets; i++ {
-		d.bus.ReadRegister(d.Address, APDS9960_GFIFO_U_REG, data[:1])
-		d.bus.ReadRegister(d.Address, APDS9960_GFIFO_D_REG, data[1:2])
-		d.bus.ReadRegister(d.Address, APDS9960_GFIFO_L_REG, data[2:3])
-		d.bus.ReadRegister(d.Address, APDS9960_GFIFO_R_REG, data[3:4])
-		for j := uint8(0); j < 4; j++ {
-			dataSets[i][j] = data[j]
-		}
-	}
-
-	// gesture detection process
-	d.gesture.detected = GESTURE_NONE
-	for i := uint8(0); i < availableDataSets; i++ {
-		U := dataSets[i][0]
-		D := dataSets[i][1]
-		L := dataSets[i][2]
-		R := dataSets[i][3]
-
-		// if all readings fall below threshold, it's possible that
-		// a movement's just been made
-		if U < d.gesture.threshold && D < d.gesture.threshold && L < d.gesture.threshold && R < d.gesture.threshold {
-			d.gesture.received = true
-			// if there were movement in the previous step (including the last data sets)
-			if d.gesture.gXPrevDelta != 0 && d.gesture.gYPrevDelta != 0 {
-				totalX := d.gesture.gXPrevDelta - d.gesture.gXDelta
-				totalY := d.gesture.gYPrevDelta - d.gesture.gYDelta
-				// if previous and current movement are in opposite directions (pass through one led then next)
-				// and the difference is big enough, the gesture is recorded
-				switch {
-				case totalX < -int16(d.gesture.sensitivity):
-					d.gesture.detected = GESTURE_LEFT
-				case totalX > int16(d.gesture.sensitivity):
-					d.gesture.detected = GESTURE_RIGHT
-				case totalY > int16(d.gesture.sensitivity):
-					d.gesture.detected = GESTURE_DOWN
-				case totalY < -int16(d.gesture.sensitivity):
-					d.gesture.detected = GESTURE_UP
-				}
-				d.gesture.gXDelta = 0
-				d.gesture.gYDelta = 0
-				d.gesture.gXPrevDelta = 0
-				d.gesture.gYPrevDelta = 0
-			}
-			continue
-		}
-
-		// recording current movement
-		d.gesture.gXDelta = int16(R) - int16(L)
-		d.gesture.gYDelta = int16(D) - int16(U)
-		if d.gesture.received {
-			d.gesture.received = false
-			d.gesture.gXPrevDelta = d.gesture.gXDelta
-			d.gesture.gYPrevDelta = d.gesture.gYDelta
-		}
-	}
-
-	return d.gesture.detected != GESTURE_NONE
-}
-
-// ReadGesture reads last gesture data
-func (d *Device) ReadGesture() (gesture int32) {
-	return int32(d.gesture.detected)
-}
-
-// private functions
-
-func (d *Device) enable(cfg enableConfig) {
-	var gen, pien, aien, wen, pen, aen, pon uint8
-
-	if cfg.GEN {
-		gen = 1
-	}
-	if cfg.PIEN {
-		pien = 1
-	}
-	if cfg.AIEN {
-		aien = 1
-	}
-	if cfg.WEN {
-		wen = 1
-	}
-	if cfg.PEN {
-		pen = 1
-	}
-	if cfg.AEN {
-		aen = 1
-	}
-	if cfg.PON {
-		pon = 1
-	}
-
-	data := []byte{gen<<6 | pien<<5 | aien<<4 | wen<<3 | pen<<2 | aen<<1 | pon}
-	d.bus.WriteRegister(d.Address, APDS9960_ENABLE_REG, data)
-
-	if cfg.PON {
-		time.Sleep(time.Millisecond * 10)
-	}
-}
-
-func (d *Device) readStatus(param string) bool {
-	data := []byte{0}
-	d.bus.ReadRegister(d.Address, APDS9960_STATUS_REG, data)
-
-	switch param {
-	case "CPSAT":
-		return data[0]>>7&0x01 == 1
-	case "PGSAT":
-		return data[0]>>6&0x01 == 1
-	case "PINT":
-		return data[0]>>5&0x01 == 1
-	case "AINT":
-		return data[0]>>4&0x01 == 1
-	case "PVALID":
-		return data[0]>>1&0x01 == 1
-	case "AVALID":
-		return data[0]&0x01 == 1
-	default:
-		return false
-	}
-}
-
-func getPulseLength(l uint8) uint8 {
-	switch l {
-	case 4:
-		return 0
-	case 8:
-		return 1
-	case 16:
-		return 2
-	case 32:
-		return 3
-	default:
-		return 0
-	}
-}
-
-func getPulseCount(c uint8) uint8 {
-	if c < 1 && c > 64 {
-		return 0
-	}
-	return c - 1
-}
-
-func getProximityGain(g uint8) uint8 {
-	switch g {
-	case 1:
-		return 0
-	case 2:
-		return 1
-	case 4:
-		return 2
-	case 8:
-		return 3
-	default:
-		return 0
-	}
-}
-
-func getALSGain(g uint8) uint8 {
-	switch g {
-	case 1:
-		return 0
-	case 4:
-		return 1
-	case 16:
-		return 2
-	case 64:
-		return 3
-	default:
-		return 0
-	}
-}
@@ -1,14 +0,0 @@
-//go:build !nano_33_ble
-// +build !nano_33_ble
-
-package apds9960
-
-import "tinygo.org/x/drivers"
-
-// New creates a new APDS-9960 connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) Device {
-	return Device{bus: bus, Address: ADPS9960_ADDRESS, mode: MODE_NONE}
-}
@@ -1,29 +0,0 @@
-//go:build nano_33_ble
-// +build nano_33_ble
-
-package apds9960
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers"
-)
-
-// New creates a new APDS-9960 connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) Device {
-	// turn on internal power pin (machine.P0_22) and I2C1 pullups power pin (machine.P1_00)
-	// and wait a moment.
-	ENV := machine.P0_22
-	ENV.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	ENV.High()
-	R := machine.P1_00
-	R.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	R.High()
-	time.Sleep(time.Millisecond * 10)
-
-	return Device{bus: bus, Address: ADPS9960_ADDRESS, mode: MODE_NONE}
-}
@@ -1,78 +0,0 @@
-package apds9960
-
-const (
-
-	// I2C address
-	ADPS9960_ADDRESS = 0x39
-
-	// control/status registers
-	APDS9960_RAM_REG        = 0x00
-	APDS9960_ENABLE_REG     = 0x80
-	APDS9960_ATIME_REG      = 0x81
-	APDS9960_WTIME_REG      = 0x83
-	APDS9960_AILTIL_REG     = 0x84
-	APDS9960_AILTH_REG      = 0x85
-	APDS9960_AIHTL_REG      = 0x86
-	APDS9960_AIHTH_REG      = 0x87
-	APDS9960_PILT_REG       = 0x89
-	APDS9960_PIHT_REG       = 0x8B
-	APDS9960_PERS_REG       = 0x8C
-	APDS9960_CONFIG1_REG    = 0x8D
-	APDS9960_PPULSE_REG     = 0x8E
-	APDS9960_CONTROL_REG    = 0x8F
-	APDS9960_CONFIG2_REG    = 0x90
-	APDS9960_ID_REG         = 0x92
-	APDS9960_STATUS_REG     = 0x93
-	APDS9960_CDATAL_REG     = 0x94
-	APDS9960_CDATAH_REG     = 0x95
-	APDS9960_RDATAL_REG     = 0x96
-	APDS9960_RDATAH_REG     = 0x97
-	APDS9960_GDATAL_REG     = 0x98
-	APDS9960_GDATAH_REG     = 0x99
-	APDS9960_BDATAL_REG     = 0x9A
-	APDS9960_BDATAH_REG     = 0x9B
-	APDS9960_PDATA_REG      = 0x9C
-	APDS9960_POFFSET_UR_REG = 0x9D
-	APDS9960_POFFSET_DL_REG = 0x9E
-	APDS9960_CONFIG3_REG    = 0x9F
-	APDS9960_GPENTH_REG     = 0xA0
-	APDS9960_GEXTH_REG      = 0xA1
-	APDS9960_GCONF1_REG     = 0xA2
-	APDS9960_GCONF2_REG     = 0xA3
-	APDS9960_GOFFSET_U_REG  = 0xA4
-	APDS9960_GOFFSET_D_REG  = 0xA5
-	APDS9960_GOFFSET_L_REG  = 0xA7
-	APDS9960_GOFFSET_R_REG  = 0xA9
-	APDS9960_GPULSE_REG     = 0xA6
-	APDS9960_GCONF3_REG     = 0xAA
-	APDS9960_GCONF4_REG     = 0xAB
-	APDS9960_GFLVL_REG      = 0xAE
-	APDS9960_GSTATUS_REG    = 0xAF
-	APDS9960_IFORCE_REG     = 0xE4
-	APDS9960_PICLEAR_REG    = 0xE5
-	APDS9960_CICLEAR_REG    = 0xE6
-	APDS9960_AICLEAR_REG    = 0xE7
-	APDS9960_GFIFO_U_REG    = 0xFC
-	APDS9960_GFIFO_D_REG    = 0xFD
-	APDS9960_GFIFO_L_REG    = 0xFE
-	APDS9960_GFIFO_R_REG    = 0xFF
-)
-
-const (
-
-	// sensor modes
-	MODE_NONE = iota
-	MODE_PROXIMITY
-	MODE_COLOR
-	MODE_GESTURE
-)
-
-const (
-
-	// detected gestures
-	GESTURE_NONE = iota
-	GESTURE_UP
-	GESTURE_DOWN
-	GESTURE_LEFT
-	GESTURE_RIGHT
-)
@@ -1,258 +0,0 @@
-// Package axp192 provides a driver for the axp192 I2C Enhanced single Cell
-// Li-Battery and Power System Management IC.
-//
-// http://www.x-powers.com/en.php/Info/product_detail/article_id/29
-// Datasheet: https://github.com/m5stack/M5-Schematic/blob/master/Core/AXP192%20Datasheet_v1.1_en_draft_2211.pdf
-//
-package axp192 // import "tinygo.org/x/drivers/axp192"
-
-import (
-	"tinygo.org/x/drivers"
-)
-
-type Error uint8
-
-const (
-	ErrInvalidID Error = 0x1
-)
-
-func (e Error) Error() string {
-	switch e {
-	case ErrInvalidID:
-		return "Invalid chip ID"
-	default:
-		return "Unknown error"
-	}
-}
-
-type Device struct {
-	bus     drivers.I2C
-	buf     []byte
-	Address uint8
-}
-
-// New returns AXP192 device for the provided I2C bus using default address.
-func New(i2c drivers.I2C) *Device {
-	return &Device{
-		bus:     i2c,
-		buf:     make([]byte, 2),
-		Address: Address,
-	}
-}
-
-type Config struct {
-}
-
-// Configure the AXP192 device.
-func (d *Device) Configure(config Config) error {
-	return nil
-}
-
-// ReadPowerSupplyStatus reads power supply status.
-func (d *Device) ReadPowerSupplyStatus() uint8 {
-	return d.read8bit(RegPowerSupplyStatus)
-}
-
-// SetVbusIPSOutAccessManagement sets VBUS-IPSOUT access management.
-func (d *Device) SetVbusIPSOutAccessManagement(a uint8) {
-	d.write1Byte(RegVbusIPSOutAccessManagement, a)
-}
-
-// GetVbusIPSOutAccessManagement gets VBUS-IPSOUT access management.
-func (d *Device) GetVbusIPSOutAccessManagement() uint8 {
-	return d.read8bit(RegVbusIPSOutAccessManagement)
-}
-
-// SetGPIO1Control sets GPIO1 function.
-func (d *Device) SetGPIO1Control(a uint8) {
-	d.write1Byte(RegGPIO1Control, a)
-}
-
-// GetGPIO1Control gets GPIO1 function.
-func (d *Device) GetGPIO1Control() uint8 {
-	return d.read8bit(RegGPIO1Control)
-}
-
-// SetGPIO2Control sets GPIO2 function.
-func (d *Device) SetGPIO2Control(a uint8) {
-	d.write1Byte(RegGPIO2Control, a)
-}
-
-// GetGPIO2Control gets GPIO2 function.
-func (d *Device) GetGPIO2Control() uint8 {
-	return d.read8bit(RegGPIO2Control)
-}
-
-// SetGPIO20SignalStatus sets GPIO[2:0] signal status.
-func (d *Device) SetGPIO20SignalStatus(a uint8) {
-	d.write1Byte(RegGPIO20SignalStatus, a)
-}
-
-// GetGPIO20SignalStatus gets GPIO[2:0] signal status.
-func (d *Device) GetGPIO20SignalStatus() uint8 {
-	return d.read8bit(RegGPIO20SignalStatus)
-}
-
-// SetBackupBatteryChargingControl sets backup battery charge control.
-func (d *Device) SetBackupBatteryChargingControl(a uint8) {
-	d.write1Byte(RegBackupBatteryChargingControl, a)
-}
-
-// GetBackupBatteryChargingControl gets backup battery charge control.
-func (d *Device) GetBackupBatteryChargingControl() uint8 {
-	return d.read8bit(RegBackupBatteryChargingControl)
-}
-
-// SetDCDC1VoltageSet sets DC-DC1 output voltage.
-func (d *Device) SetDCDC1VoltageSet(a uint8) {
-	d.write1Byte(RegDCDC1VoltageSet, a)
-}
-
-// GetDCDC1VoltageSet gets DC-DC1 output voltage.
-func (d *Device) GetDCDC1VoltageSet() uint8 {
-	return d.read8bit(RegDCDC1VoltageSet)
-}
-
-// SetDCDC2VoltageSet sets DC-DC2 dynamic voltage parameter.
-func (d *Device) SetDCDC2VoltageSet(a uint8) {
-	d.write1Byte(RegDCDC2VoltageSet, a)
-}
-
-// GetDCDC2VoltageSet gets DC-DC2 dynamic voltage parameter.
-func (d *Device) GetDCDC2VoltageSet() uint8 {
-	return d.read8bit(RegDCDC2VoltageSet)
-}
-
-// SetDCDC3VoltageSet sets DC-DC3 output voltage.
-func (d *Device) SetDCDC3VoltageSet(a uint8) {
-	d.write1Byte(RegDCDC3VoltageSet, a)
-}
-
-// GetDCDC3VoltageSet gets DC-DC3 output voltage.
-func (d *Device) GetDCDC3VoltageSet() uint8 {
-	return d.read8bit(RegDCDC3VoltageSet)
-}
-
-// SetLDO23VoltageSet sets LDO2/3 output voltage.
-func (d *Device) SetLDO23VoltageSet(a uint8) {
-	d.write1Byte(RegLDO23VoltageSet, a)
-}
-
-// GetLDO23VoltageSet gets LDO2/3 output voltage.
-func (d *Device) GetLDO23VoltageSet() uint8 {
-	return d.read8bit(RegLDO23VoltageSet)
-}
-
-// SetDCDC13LDO23Switch sets DC-DC1/3 & LOD2/3 output control.
-func (d *Device) SetDCDC13LDO23Switch(a uint8) {
-	d.write1Byte(RegDCDC13LDO23Switch, a)
-}
-
-// GetDCDC13LDO23Switch gets DC-DC1/3 & LOD2/3 output control.
-func (d *Device) GetDCDC13LDO23Switch() uint8 {
-	return d.read8bit(RegDCDC13LDO23Switch)
-}
-
-// SetGPIO43FunctionControl sets GPIO[4:3] pin function.
-func (d *Device) SetGPIO43FunctionControl(a uint8) {
-	d.write1Byte(RegGPIO43FunctionControl, a)
-}
-
-// GetGPIO43FunctionControl gets GPIO[4:3] pin function.
-func (d *Device) GetGPIO43FunctionControl() uint8 {
-	return d.read8bit(RegGPIO43FunctionControl)
-}
-
-// SetPEKParameterSet sets PEK press key parameter.
-func (d *Device) SetPEKParameterSet(a uint8) {
-	d.write1Byte(RegPEKParameterSet, a)
-}
-
-// GetPEKParameterSet gets PEK press key parameter.
-func (d *Device) GetPEKParameterSet() uint8 {
-	return d.read8bit(RegPEKParameterSet)
-}
-
-// SetADCEnableSet sets ADC enable 1.
-func (d *Device) SetADCEnableSet(a uint8) {
-	d.write1Byte(RegADCEnableSet, a)
-}
-
-// GetADCEnableSet gets ADC enable 1.
-func (d *Device) GetADCEnableSet() uint8 {
-	return d.read8bit(RegADCEnableSet)
-}
-
-// SetGPIO43SignalStatus sets GPIO[4:3] signal status.
-func (d *Device) SetGPIO43SignalStatus(a uint8) {
-	d.write1Byte(RegGPIO43SignalStatus, a)
-}
-
-// GetGPIO43SignalStatus gets GPIO[4:3] signal status.
-func (d *Device) GetGPIO43SignalStatus() uint8 {
-	return d.read8bit(RegGPIO43SignalStatus)
-}
-
-// SetDCVoltage sets DC voltage.
-func (d *Device) SetDCVoltage(number uint8, voltage uint16) {
-	if voltage < 700 {
-		voltage = 0
-	} else {
-		voltage = (voltage - 700) / 25
-	}
-
-	switch number {
-	case 0:
-		v := d.GetDCDC1VoltageSet()
-		d.SetDCDC1VoltageSet((v & 0x80) | (uint8(voltage) & 0x7F))
-	case 1:
-		v := d.GetDCDC2VoltageSet()
-		d.SetDCDC2VoltageSet((v & 0x80) | (uint8(voltage) & 0x7F))
-	case 2:
-		v := d.GetDCDC3VoltageSet()
-		d.SetDCDC3VoltageSet((v & 0x80) | (uint8(voltage) & 0x7F))
-	}
-}
-
-// SetLDOVoltage sets LDO voltage.
-func (d *Device) SetLDOVoltage(number uint8, voltage uint16) {
-	if voltage > 3300 {
-		voltage = 15
-	} else {
-		voltage = (voltage / 100) - 18
-	}
-
-	switch number {
-	case 2:
-		v := d.GetLDO23VoltageSet()
-		d.SetLDO23VoltageSet((v & 0x0F) | (uint8(voltage) << 4))
-		break
-	case 3:
-		v := d.GetLDO23VoltageSet()
-		d.SetLDO23VoltageSet((v & 0xF0) | uint8(voltage))
-		break
-	}
-}
-
-// SetLDOEnable enable LDO.
-func (d *Device) SetLDOEnable(number uint8, state bool) {
-	mark := uint8(0x01)
-	mark <<= number
-	switch number {
-	case 2:
-		v := d.GetDCDC13LDO23Switch()
-		d.SetDCDC13LDO23Switch(v | mark)
-	case 3:
-		v := d.GetDCDC13LDO23Switch()
-		d.SetDCDC13LDO23Switch(v & (^mark))
-	}
-}
-
-func (d *Device) write1Byte(reg, data uint8) {
-	d.bus.WriteRegister(d.Address, reg, []byte{data})
-}
-
-func (d *Device) read8bit(reg uint8) uint8 {
-	d.bus.ReadRegister(d.Address, reg, d.buf[:1])
-	return d.buf[0]
-}
@@ -1,158 +0,0 @@
-package axp192
-
-import (
-	"time"
-
-	"tinygo.org/x/drivers"
-	axp192orig "tinygo.org/x/drivers/axp192"
-)
-
-// Device wraps an I2C connection to a AXP192 device.
-type Device struct {
-	*axp192orig.Device
-	LED    Pin
-	RST    Pin
-	SPK_EN Pin
-}
-
-// New creates a new AXP192 connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(i2c drivers.I2C) *Device {
-	d := axp192orig.New(i2c)
-
-	axp := &Device{
-		Device: d,
-	}
-	axp.LED = Pin{pin: 1, axp: axp}
-	axp.SPK_EN = Pin{pin: 2, axp: axp}
-	axp.RST = Pin{pin: 4, axp: axp}
-
-	axp.begin()
-
-	return axp
-}
-
-type Config struct {
-}
-
-// Configure sets up the device for communication
-func (d *Device) Configure(config Config) error {
-	return d.Device.Configure(axp192orig.Config{})
-}
-
-func (d *Device) begin() {
-	d.SetVbusIPSOutAccessManagement((d.GetVbusIPSOutAccessManagement() & 0x04) | 0x02)
-	d.SetGPIO1Control(d.GetGPIO1Control() & 0xF8)
-	d.SetGPIO2Control(d.GetGPIO2Control() & 0xF8)
-	d.SetBackupBatteryChargingControl((d.GetBackupBatteryChargingControl() & 0x1C) | 0xA2)
-	d.SetESPVoltage(3350)
-	d.SetLcdVoltage(3300)
-	d.SetLDOVoltage(2, 3300) //Periph power voltage preset (LCD_logic, SD card)
-	d.SetLDOVoltage(3, 2000) //Vibrator power voltage preset
-
-	d.SetLDOEnable(2, true)
-	d.SetDCDC3(true) // LCD Backlight
-	// GPIO4 : LCD Reset
-	d.SetGPIO43FunctionControl((d.GetGPIO43FunctionControl() & 0x72) | 0x84)
-	// Power On/Off Setting
-	d.SetPEKParameterSet(0x4C)
-	d.SetADCEnableSet(0xFF)
-
-	d.RST.Low()
-	time.Sleep(100 * time.Millisecond)
-	d.RST.High()
-	time.Sleep(100 * time.Millisecond)
-}
-
-// ToggleLED toggles LED connected to AXP192.
-func (d *Device) ToggleLED() {
-	v := d.GetGPIO20SignalStatus()
-	if (v & 0x02) > 0 {
-		d.SetGPIO20SignalStatus(v & 0xFD)
-	} else {
-		d.SetGPIO20SignalStatus(v | 0x02)
-	}
-}
-
-// SetESPVoltage sets voltage of ESP32.
-func (d *Device) SetESPVoltage(voltage uint16) {
-	if voltage >= 3000 && voltage <= 3400 {
-		d.SetDCVoltage(0, voltage)
-	}
-}
-
-// SetLcdVoltage sets voltage of LCD.
-func (d *Device) SetLcdVoltage(voltage uint16) {
-	if voltage >= 2500 && voltage <= 3300 {
-		d.SetDCVoltage(2, voltage)
-	}
-}
-
-// SetDCDC3 enables or disables DCDC3.
-func (d *Device) SetDCDC3(State bool) {
-	v := d.GetDCDC13LDO23Switch()
-	if State == true {
-		v = (1 << 1) | v
-	} else {
-		v = ^(uint8(1) << 1) & v
-	}
-	d.SetDCDC13LDO23Switch(v)
-}
-
-// Pin is a single pin on AXP192.
-type Pin struct {
-	pin uint8
-	axp *Device
-}
-
-// High sets this GPIO pin to high.
-func (p Pin) High() {
-	switch p.pin {
-	case 1: // LED
-		v := p.axp.GetGPIO20SignalStatus()
-		p.axp.SetGPIO20SignalStatus(v | 0x02)
-	case 2: // SPK_EN
-	case 4: // RST
-		v := p.axp.GetGPIO43SignalStatus()
-		v |= uint8(0x02)
-		p.axp.SetGPIO43SignalStatus(v)
-	}
-}
-
-// Low sets this GPIO pin to low.
-func (p Pin) Low() {
-	switch p.pin {
-	case 1: // LED
-		v := p.axp.GetGPIO20SignalStatus()
-		p.axp.SetGPIO20SignalStatus(v & 0xFD)
-	case 2: // SPK_EN
-	case 4: // RST
-		v := p.axp.GetGPIO43SignalStatus()
-		v &= ^uint8(0x02)
-		p.axp.SetGPIO43SignalStatus(v)
-	}
-}
-
-// Toggle switches an output pin from low to high or from high to low.
-func (p Pin) Toggle() {
-	switch p.pin {
-	case 1: // LED
-		v := p.axp.GetGPIO20SignalStatus()
-		if (v & 0x02) == 0 {
-			p.axp.SetGPIO20SignalStatus(v | 0x02)
-		} else {
-			p.axp.SetGPIO20SignalStatus(v & 0xFD)
-		}
-	case 2: // SPK_EN
-	case 4: // RST
-		v := p.axp.GetGPIO43SignalStatus()
-		if (v & 0x02) == 0 {
-			v |= uint8(0x02)
-		} else {
-			v &= ^uint8(0x02)
-		}
-		p.axp.SetGPIO43SignalStatus(v)
-	}
-}
@@ -1,127 +0,0 @@
-package axp192
-
-// power supply control class
-// 0x00 Power supply status register
-// 0x01  Power supply mode/charging status register
-// 0x04  OTG VBUS status register
-// 0x06‐09  Data buffer register
-// 0x10  EXTEN & DC‐DC2 switch register
-// 0x12  DC‐DC1/3 & LDO2/3switch register
-// 0x23  DC‐DC2 voltage set register
-// 0x25  DC‐DC2 voltage slope set register
-// 0x26  DC‐DC1voltage set register
-// 0x27  DC‐DC3 voltage set register
-// 0x28  LDO2/3 voltage set register
-// 0x30  VBUS‐IPSOUT access set register
-// 0x31  VOFF power off voltage set register
-// 0x32  Power off、battery detect、CHGLED control register
-// 0x33  Charging control register1
-// 0x34  Charging control register2
-// 0x35  Backup battery charging control register
-// 0x36  PEK parameter set register
-// 0x37  DCDC switch frequency set register
-// 0x38  Battery charging under temperature warning set register
-// 0x39  Battery charging over temperature warning set register
-// 0x3A  APS under voltage Level1 set register
-// 0x3B  APS under voltage Level2 set register
-// 0x3C  Battery discharging under temperature warning set register
-// 0x3D  Battery discharging over temperature warning set register
-// 0x80  DCDC mode set register
-// 0x82  ADC enable set register 1
-// 0x83  ADC enable set register 2
-// 0x84  ADC sample frequency set, TS pin control register
-// 0x85  GPIO [3:0] input range set register
-// 0x8A  Timer control register
-// 0x8B  VBUS monitor set register
-// 0x8F  Over temperature power off control register
-
-// GPIO control class
-// 0x90  GPIO0 control register
-// 0x91  GPIO0 LDO mode output voltage set register
-// 0x92  GPIO1 control register
-// 0x93  GPIO2 control register
-// 0x94  GPIO[2:0] signal status register
-// 0x95  GPIO[4:3] function control register
-// 0x96  GPIO[4:3] signal status register
-// 0x97  GPIO[2:0] pull down control register
-// 0x98  PWM1 frequency set register
-// 0x99  PWM1 duty ratio set register 1
-// 0x9A  PWM1 duty ratio set register 2
-// 0x9B  PWM2 frequency set register
-// 0x9C  PWM2 duty ratio set register 1
-// 0x9D  PWM2 duty ratio set register 2
-// 0x9E  GPIO5 control register
-
-// IRQ control class
-// 0x40  IRQ enable control register 1
-// 0x41  IRQ enable control register 2
-// 0x42  IRQ enable control register 3
-// 0x43  IRQ enable control register 4
-// 0x44  IRQ status register 1
-// 0x45  IRQ status register 2
-// 0x46  IRQ status register 3
-// 0x47  IRQ status register 4
-
-// ADC data class
-// 0x56  ACIN voltage ADC data high 8 bit
-// 0x57  ACIN voltage ADC data low 4 bit
-// 0x58  ACIN current ADC data high 8 bit
-// 0x59  ACIN current ADC data low 4 bit
-// 0x5A  VBUS voltage ADC data high 8 bit
-// 0x5B  VBUS voltage ADC data low 4 bit
-// 0x5C  VBUS current ADC data high 8 bit
-// 0x5D  VBUS current ADC data low 4 bit
-// 0x5E  AXP192 internal temperature monitor ADC data High 8 bit
-// 0x5F  AXP192 internal temperature monitor ADC data low 4 bit
-// 0x62  TS input ADC data High 8 bit，monitor battery temperature by default
-// 0x63  TS input ADC data low 4 bit，monitor battery temperature by default
-// 0x64  GPIO0 voltage ADC data high 8 bit
-// 0x65  GPIO0 voltage ADC data low 4 bit
-// 0x66  GPIO1 voltage ADC data high 8 bit
-// 0x67  GPIO1 voltage ADC data low 4 bit
-// 0x68  GPIO2 voltage ADC data high 8 bit
-// 0x69  GPIO2 voltage ADC data low 4 bit
-// 0x6A  GPIO[3] voltage ADC data high 8 bit
-// 0x6B  GPIO[3] voltage ADC data low 4 bit
-// 0x70  Battery instantaneous power high 8 bit
-// 0x71  Battery instantaneous power middle 8 bit
-// 0x72  Battery instantaneous power low 8 bit
-// 0x78  Battery voltage high 8 bit
-// 0x79  Battery voltage low 4 bit
-// 0x7A  Battery charging current high 8 bit
-// 0x7B  Battery charging current low 5 bit
-// 0x7C  Battery discharging current high 8 bit
-// 0x7D  Battery discharging current low 5 bit
-// 0x7E  APS voltage high 8 bit
-// 0x7F  APS voltage low 4 bit
-// 0xB0  Battery charging coulomb counter data register 3
-// 0xB1  Battery charging coulomb counter data register 2
-// 0xB2  Battery charging coulomb counter data register 1
-// 0xB3  Battery charging coulomb counter data register 0
-// 0xB4  Battery discharging coulomb counter data register 3
-// 0xB5  Battery discharging coulomb counter data register 2
-// 0xB6  Battery discharging coulomb counter data register 1
-// 0xB7  Battery discharging coulomb counter data register 0
-// 0xB8  Coulomb counter control register
-
-const (
-	// Address is default I2C address.
-	Address = 0x34
-
-	RegPowerSupplyStatus            = 0x00
-	RegDCDC13LDO23Switch            = 0x12
-	RegVbusIPSOutAccessManagement   = 0x30
-	RegBackupBatteryChargingControl = 0x35
-	RegDCDC2VoltageSet              = 0x25
-	RegDCDC1VoltageSet              = 0x26
-	RegDCDC3VoltageSet              = 0x27
-	RegLDO23VoltageSet              = 0x28
-	RegPEKParameterSet              = 0x36
-	RegADCEnableSet                 = 0x82
-
-	RegGPIO1Control          = 0x92
-	RegGPIO2Control          = 0x93
-	RegGPIO20SignalStatus    = 0x94
-	RegGPIO43FunctionControl = 0x95
-	RegGPIO43SignalStatus    = 0x96
-)
@@ -114,14 +114,14 @@ func (d *Device) Reset() {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (int32, error) {
+func (d *Device) ReadTemperature() (drivers.Temperature, error) {
 	data, err := d.readData()
 	if err != nil {
 		return 0, err
 	}

 	temp, _ := d.calculateTemp(data)
-	return temp, nil
+	return drivers.Temperature(temp), nil
 }

 // ReadPressure returns the pressure in milli pascals mPa
@@ -81,7 +81,7 @@ func (d *DeviceSPI) Reset() error {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000).
-func (d *DeviceSPI) ReadTemperature() (temperature int32, err error) {
+func (d *DeviceSPI) ReadTemperature() (temperature drivers.Temperature, err error) {
 	data := d.buf[:3]
 	data[0] = 0x80 | reg_TEMPERATURE_0
 	data[1] = 0
@@ -109,7 +109,7 @@ func (d *DeviceSPI) ReadTemperature() (temperature int32, err error) {
 	//    rawTemperature * 1000 * 64 / 0x8000 + 23000
 	//    rawTemperature * 64000 / 0x8000 + 23000
 	//    rawTemperature * 125 / 64 + 23000
-	temperature = int32(rawTemperature)*125/64 + 23000
+	temperature = drivers.Temperature(rawTemperature)*125/64 + 23000
 	return
 }

@@ -81,14 +81,14 @@ func (d *Device) Configure() {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000).
-func (d *Device) ReadTemperature() (temperature int32, err error) {
+func (d *Device) ReadTemperature() (temperature drivers.Temperature, err error) {
 	rawTemp, err := d.rawTemp()
 	if err != nil {
 		return
 	}
 	b5 := d.calculateB5(rawTemp)
 	t := (b5 + 8) >> 4
-	return 100 * t, nil
+	return drivers.Temperature(100 * t), nil
 }

 // ReadPressure returns the pressure in milli pascals (mPa).
@@ -132,7 +132,7 @@ func (d *Device) PrintCali() {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000).
-func (d *Device) ReadTemperature() (temperature int32, err error) {
+func (d *Device) ReadTemperature() (temperature drivers.Temperature, err error) {
 	data, err := d.readData(REG_TEMP, 3)
 	if err != nil {
 		return
@@ -150,7 +150,7 @@ func (d *Device) ReadTemperature() (temperature int32, err error) {

 	// Convert from degrees to milli degrees by multiplying by 10.
 	// Will output 30250 milli degrees celsius for 30.25 degrees celsius
-	temperature = 10 * ((tFine*5 + 128) >> 8)
+	temperature = drivers.Temperature(10 * ((tFine*5 + 128) >> 8))
 	return
 }

@@ -133,16 +133,16 @@ func (d *Device) tlinCompensate() (int64, error) {

 }

-// ReadTemperature returns the temperature in centicelsius, i.e 2426 / 100 = 24.26 C
-func (d *Device) ReadTemperature() (int32, error) {
+// ReadTemperature returns the temperature in milli degrees Celsius, i.e 24260 / 1000 = 24.26°C.
+func (d *Device) ReadTemperature() (drivers.Temperature, error) {

 	tlin, err := d.tlinCompensate()
 	if err != nil {
 		return 0, err
 	}

-	temp := (tlin * 25) / 16384
-	return int32(temp), nil
+	temp := (tlin * 125) / 8192
+	return drivers.Temperature(temp), nil
 }

 // ReadPressure returns the pressure in centipascals, i.e 10132520 / 100 = 101325.20 Pa
@@ -35,18 +35,6 @@ func (d DeviceType) extractData(buf []byte) (temp int16, hum uint16) {
 	return
 }

-// Celsius and Fahrenheit temperature scales
-type TemperatureScale uint8
-
-func (t TemperatureScale) convertToFloat(temp int16) float32 {
-	if t == C {
-		return float32(temp) / 10
-	} else {
-		// Fahrenheit
-		return float32(temp)*(9.0/50.) + 32.
-	}
-}
-
 // All functions return ErrorCode instance as error. This class can be used for more efficient error processing
 type ErrorCode uint8

@@ -57,9 +45,6 @@ const (
 	DHT11 DeviceType = iota
 	DHT22

-	C TemperatureScale = iota
-	F
-
 	ChecksumError ErrorCode = iota
 	NoSignalError
 	NoDataError
@@ -9,14 +9,15 @@ package dht // import "tinygo.org/x/drivers/dht"
 import (
 	"machine"
 	"time"
+
+	"tinygo.org/x/drivers"
 )

 // DummyDevice provides a basic interface for DHT devices.
 type DummyDevice interface {
 	ReadMeasurements() error
 	Measurements() (temperature int16, humidity uint16, err error)
-	Temperature() (int16, error)
-	TemperatureFloat(scale TemperatureScale) (float32, error)
+	Temperature() (drivers.Temperature, error)
 	Humidity() (uint16, error)
 	HumidityFloat() (float32, error)
 }
@@ -49,23 +50,13 @@ func (t *device) ReadMeasurements() error {
 	return err
 }

-// Getter for temperature. Temperature method returns temperature as it is sent by device.
-// The temperature is measured temperature in Celsius multiplied by 10.
+// Getter for temperature. The temperature is returned in milli degrees Celsius.
 // If no successful measurements for this device was performed, returns UninitializedDataError.
-func (t *device) Temperature() (int16, error) {
+func (t *device) Temperature() (drivers.Temperature, error) {
 	if !t.initialized {
 		return 0, UninitializedDataError
 	}
-	return t.temperature, nil
-}
-
-// Getter for temperature. TemperatureFloat returns temperature in a given scale.
-// If no successful measurements for this device was performed, returns UninitializedDataError.
-func (t *device) TemperatureFloat(scale TemperatureScale) (float32, error) {
-	if !t.initialized {
-		return 0, UninitializedDataError
-	}
-	return scale.convertToFloat(t.temperature), nil
+	return drivers.Temperature(t.temperature) * 100, nil
 }

 // Getter for humidity. Humidity returns humidity as it is sent by device.
@@ -9,6 +9,8 @@ package dht // import "tinygo.org/x/drivers/dht"
 import (
 	"machine"
 	"time"
+
+	"tinygo.org/x/drivers"
 )

 // Device interface provides main functionality of the DHTXX sensors.
@@ -35,10 +37,9 @@ func (m *managedDevice) Measurements() (temperature int16, humidity uint16, err
 	return m.t.Measurements()
 }

-// Getter for temperature. Temperature method returns temperature as it is sent by device.
-// The temperature is measured temperature in Celsius multiplied by 10.
+// Getter for temperature. The temperature is returned in milli degrees Celsius.
 // Depending on the UpdatePolicy of the device may update cached measurements.
-func (m *managedDevice) Temperature() (temp int16, err error) {
+func (m *managedDevice) Temperature() (temp drivers.Temperature, err error) {
 	err = m.checkForUpdateOnDataRequest()
 	if err != nil {
 		return 0, err
@@ -64,16 +65,6 @@ func (m *managedDevice) checkForUpdateOnDataRequest() (err error) {
 	return err
 }

-// Getter for temperature. TemperatureFloat returns temperature in a given scale.
-// Depending on the UpdatePolicy of the device may update cached measurements.
-func (m *managedDevice) TemperatureFloat(scale TemperatureScale) (float32, error) {
-	err := m.checkForUpdateOnDataRequest()
-	if err != nil {
-		return 0, err
-	}
-	return m.t.TemperatureFloat(scale)
-}
-
 // Getter for humidity. Humidity returns humidity as it is sent by device.
 // The humidity is measured in percentages multiplied by 10.
 // Depending on the UpdatePolicy of the device may update cached measurements.
@@ -134,13 +134,13 @@ func (d *Device) ReadTime() (dt time.Time, err error) {
 }

 // ReadTemperature returns the temperature in millicelsius (mC)
-func (d *Device) ReadTemperature() (int32, error) {
+func (d *Device) ReadTemperature() (drivers.Temperature, error) {
 	data := make([]uint8, 2)
 	err := d.bus.ReadRegister(uint8(d.Address), REG_TEMP, data)
 	if err != nil {
 		return 0, err
 	}
-	return int32(data[0])*1000 + int32((data[1]>>6)*25)*10, nil
+	return drivers.Temperature(int32(data[0])*1000 + int32((data[1]>>6)*25)*10), nil
 }

 // uint8ToBCD converts a byte to BCD for the DS3231
@@ -19,8 +19,8 @@ func main() {
 	sensor.Configure()

 	for {
-		temp := sensor.ReadTempF()
-		fmt.Printf("temperature: %f\r\n", temp)
+		temp, _ := sensor.ReadTemperature()
+		fmt.Printf("temperature: %f°C\r\n", temp.Celsius())
 		time.Sleep(time.Second)
 	}

@@ -1,38 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/apds9960"
-)
-
-func main() {
-
-	machine.I2C1.Configure(machine.I2CConfig{
-		SCL:       machine.P0_15, // SCL1 on Nano 33 BLE Sense
-		SDA:       machine.P0_14, // SDA1 on Nano 33 BLE Sense
-		Frequency: machine.TWI_FREQ_400KHZ,
-	})
-
-	sensor := apds9960.New(machine.I2C1)
-
-	if !sensor.Connected() {
-		println("APDS-9960 not connected!")
-		return
-	}
-
-	sensor.Configure(apds9960.Configuration{}) // use default settings
-
-	sensor.EnableColor() // enable color engine
-
-	for {
-
-		if sensor.ColorAvailable() {
-			r, g, b, c := sensor.ReadColor()
-			println("Red =", r, "\tGreen =", g, "\tBlue =", b, "\tClear =", c)
-		}
-		time.Sleep(time.Millisecond * 100)
-	}
-
-}
@@ -1,51 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/apds9960"
-)
-
-func main() {
-
-	machine.I2C1.Configure(machine.I2CConfig{
-		SCL:       machine.P0_15, // SCL1 on Nano 33 BLE Sense
-		SDA:       machine.P0_14, // SDA1 on Nano 33 BLE Sense
-		Frequency: machine.TWI_FREQ_400KHZ,
-	})
-
-	sensor := apds9960.New(machine.I2C1)
-
-	if !sensor.Connected() {
-		println("APDS-9960 not connected!")
-		return
-	}
-
-	sensor.Configure(apds9960.Configuration{}) // use default settings
-
-	sensor.EnableGesture() // enable gesture engine
-
-	for {
-
-		// wave your hand (not too slow) about 10 cm above the sensor
-		if sensor.GestureAvailable() {
-
-			gesture := sensor.ReadGesture()
-			print("Detected gesture: ")
-			switch gesture {
-			case apds9960.GESTURE_UP:
-				println("Up")
-			case apds9960.GESTURE_DOWN:
-				println("Down")
-			case apds9960.GESTURE_LEFT:
-				println("Left")
-			case apds9960.GESTURE_RIGHT:
-				println("Right")
-			}
-		}
-		// note: the delay shouldn't be too long, otherwise new gesture data might be lost
-		time.Sleep(time.Millisecond * 250)
-	}
-
-}
@@ -1,38 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/apds9960"
-)
-
-func main() {
-
-	machine.I2C1.Configure(machine.I2CConfig{
-		SCL:       machine.P0_15, // SCL1 on Nano 33 BLE Sense
-		SDA:       machine.P0_14, // SDA1 on Nano 33 BLE Sense
-		Frequency: machine.TWI_FREQ_400KHZ,
-	})
-
-	sensor := apds9960.New(machine.I2C1)
-
-	if !sensor.Connected() {
-		println("APDS-9960 not connected!")
-		return
-	}
-
-	sensor.Configure(apds9960.Configuration{}) // use default settings
-
-	sensor.EnableProximity() // enable proximity engine
-
-	for {
-
-		if sensor.ProximityAvailable() {
-			p := sensor.ReadProximity()
-			println("Proximity:", p)
-		}
-		time.Sleep(time.Millisecond * 100)
-	}
-
-}
@@ -1,25 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	axp192 "tinygo.org/x/drivers/axp192/m5stack-core2-axp192"
-	"tinygo.org/x/drivers/i2csoft"
-)
-
-func main() {
-	i2c := i2csoft.New(machine.SCL0_PIN, machine.SDA0_PIN)
-	i2c.Configure(i2csoft.I2CConfig{Frequency: 100e3})
-
-	axp := axp192.New(i2c)
-	led := axp.LED
-
-	for {
-		led.Low()
-		time.Sleep(time.Millisecond * 500)
-
-		led.High()
-		time.Sleep(time.Millisecond * 500)
-	}
-}
@@ -22,7 +22,7 @@ func main() {

 	for {
 		temp, _ := sensor.ReadTemperature()
-		println("Temperature:", strconv.FormatFloat(float64(temp)/1000, 'f', 2, 64), "°C")
+		println("Temperature:", strconv.FormatFloat(float64(temp.Celsius()), 'f', 2, 64), "°C")
 		press, _ := sensor.ReadPressure()
 		println("Pressure:", strconv.FormatFloat(float64(press)/100000, 'f', 2, 64), "hPa")
 		hum, _ := sensor.ReadHumidity()
@@ -27,7 +27,7 @@ func main() {
 			println("Error reading temperature", err)
 			continue
 		}
-		fmt.Printf("Temperature: %.2f °C\n", float32(t)/1000)
+		fmt.Printf("Temperature: %.2f °C\n", t.Celsius())

 		accelX, accelY, accelZ, err := sensor.ReadAcceleration()
 		if err != nil {
@@ -22,7 +22,7 @@ func main() {

 	for {
 		temp, _ := sensor.ReadTemperature()
-		println("Temperature:", float32(temp)/1000, "°C")
+		println("Temperature:", temp.Celsius(), "°C")

 		pressure, _ := sensor.ReadPressure()
 		println("Pressure", float32(pressure)/100000, "hPa")
@@ -30,7 +30,7 @@ func main() {
 			println("Error reading temperature")
 		}
 		// Temperature in degrees Celsius
-		fmt.Printf("Temperature: %.2f °C\n", float32(t)/1000)
+		fmt.Printf("Temperature: %.2f °C\n", t.Celsius())

 		p, err := sensor.ReadPressure()
 		if err != nil {
@@ -38,13 +38,13 @@ func main() {
 	}

 	for {
-		temp, err := sensor.ReadTemperature() // returns the temperature in centicelsius
+		temp, err := sensor.ReadTemperature() // returns the temperature in millicelsius
 		press, err := sensor.ReadPressure()   // returns the pressure in centipascals

 		if err != nil {
 			println(err)
 		} else {
-			println("Temperature: " + strconv.FormatInt(int64(temp), 10) + " cC")
+			println("Temperature:", temp/1000, "C")
 			println("Pressure:    " + strconv.FormatInt(int64(press), 10) + " cPa\n")
 		}

@@ -38,7 +38,7 @@ func main() {
 			fmt.Printf("Date: %d/%s/%02d %02d:%02d:%02d \r\n", dt.Year(), dt.Month(), dt.Day(), dt.Hour(), dt.Minute(), dt.Second())
 		}
 		temp, _ := rtc.ReadTemperature()
-		fmt.Printf("Temperature: %.2f °C \r\n", float32(temp)/1000)
+		fmt.Printf("Temperature: %.2f °C \r\n", temp.Celsius())

 		time.Sleep(time.Second * 1)
 	}
@@ -1,36 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/hts221"
-)
-
-func main() {
-
-	machine.I2C1.Configure(machine.I2CConfig{
-		SCL:       machine.P0_15, // SCL1 on Nano 33 BLE Sense
-		SDA:       machine.P0_14, // SDA1 on Nano 33 BLE Sense
-		Frequency: machine.TWI_FREQ_400KHZ,
-	})
-
-	sensor := hts221.New(machine.I2C1)
-
-	if !sensor.Connected() {
-		println("HTS221 not connected!")
-		return
-	}
-
-	sensor.Configure() // power on and calibrate
-
-	for {
-
-		h, _ := sensor.ReadHumidity()
-		t, _ := sensor.ReadTemperature()
-		println("h =", float32(h)/100.0, "% / t =", float32(t)/1000.0, "*C")
-		time.Sleep(time.Second)
-
-	}
-
-}
@@ -1,27 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/adt7410"
-	"tinygo.org/x/drivers/i2csoft"
-)
-
-func main() {
-	i2c := i2csoft.New(machine.SCL_PIN, machine.SDA_PIN)
-	i2c.Configure(i2csoft.I2CConfig{
-		Frequency: 400e3,
-	})
-
-	sensor := adt7410.New(i2c)
-	sensor.Configure()
-
-	for {
-		temp := sensor.ReadTempF()
-		fmt.Printf("temperature: %f\r\n", temp)
-		time.Sleep(time.Second)
-	}
-
-}
@@ -0,0 +1,30 @@
+//go:build atsamd21
+// +build atsamd21
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI0,
+		machine.D0,
+		machine.D1,
+		machine.D2,
+	)
+
+	backlight = machine.D3
+)
+
+func init() {
+	machine.SPI0.Configure(machine.SPIConfig{
+		SCK:       machine.SPI0_SCK_PIN,
+		SDO:       machine.SPI0_SDO_PIN,
+		SDI:       machine.SPI0_SDI_PIN,
+		Frequency: 24000000,
+	})
+}
@@ -2,9 +2,9 @@ package main

 import (
 	"image/color"
+	"machine"
 	"time"

-	"tinygo.org/x/drivers/examples/ili9341/initdisplay"
 	"tinygo.org/x/drivers/ili9341"
 )

@@ -16,15 +16,16 @@ var (
 	green = color.RGBA{0, 255, 0, 255}
 )

-var (
-	display *ili9341.Device
-)
-
 func main() {
-	display = initdisplay.InitDisplay()

+	backlight.Configure(machine.PinConfig{machine.PinOutput})
+
+	display.Configure(ili9341.Config{})
 	width, height := display.Size()

+	display.FillScreen(black)
+	backlight.High()
+
 	display.FillRectangle(0, 0, width/2, height/2, white)
 	display.FillRectangle(width/2, 0, width/2, height/2, red)
 	display.FillRectangle(0, height/2, width/2, height/2, green)
@@ -0,0 +1,23 @@
+//go:build pyportal
+// +build pyportal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewParallel(
+		machine.LCD_DATA0,
+		machine.TFT_WR,
+		machine.TFT_DC,
+		machine.TFT_CS,
+		machine.TFT_RESET,
+		machine.TFT_RD,
+	)
+
+	backlight = machine.TFT_BACKLIGHT
+)
@@ -1,7 +1,7 @@
 //go:build wioterminal
 // +build wioterminal

-package initdisplay
+package main

 import (
 	"machine"
@@ -9,31 +9,22 @@ import (
 	"tinygo.org/x/drivers/ili9341"
 )

-func InitDisplay() *ili9341.Device {
-	machine.SPI3.Configure(machine.SPIConfig{
-		SCK:       machine.LCD_SCK_PIN,
-		SDO:       machine.LCD_SDO_PIN,
-		SDI:       machine.LCD_SDI_PIN,
-		Frequency: 40000000,
-	})
-
-	// configure backlight
-	backlight := machine.LCD_BACKLIGHT
-	backlight.Configure(machine.PinConfig{machine.PinOutput})
-
-	display := ili9341.NewSPI(
+var (
+	display = ili9341.NewSPI(
 		machine.SPI3,
 		machine.LCD_DC,
 		machine.LCD_SS_PIN,
 		machine.LCD_RESET,
 	)

-	// configure display
-	display.Configure(ili9341.Config{})
+	backlight = machine.LCD_BACKLIGHT
+)

-	backlight.High()
-
-	display.SetRotation(ili9341.Rotation270)
-
-	return display
+func init() {
+	machine.SPI3.Configure(machine.SPIConfig{
+		SCK:       machine.LCD_SCK_PIN,
+		SDO:       machine.LCD_SDO_PIN,
+		SDI:       machine.LCD_SDI_PIN,
+		Frequency: 40000000,
+	})
 }
@@ -1,41 +0,0 @@
-//go:build atsamd21
-// +build atsamd21
-
-package initdisplay
-
-import (
-	"machine"
-
-	"tinygo.org/x/drivers/ili9341"
-)
-
-var ()
-
-func InitDisplay() *ili9341.Device {
-	machine.SPI0.Configure(machine.SPIConfig{
-		SCK:       machine.SPI0_SCK_PIN,
-		SDO:       machine.SPI0_SDO_PIN,
-		SDI:       machine.SPI0_SDI_PIN,
-		Frequency: 24000000,
-	})
-
-	// configure backlight
-	backlight := machine.D3
-	backlight.Configure(machine.PinConfig{machine.PinOutput})
-
-	display := ili9341.NewSPI(
-		machine.SPI0,
-		machine.D0,
-		machine.D1,
-		machine.D2,
-	)
-
-	// configure display
-	display.Configure(ili9341.Config{})
-
-	backlight.High()
-
-	display.SetRotation(ili9341.Rotation270)
-
-	return display
-}
@@ -1,34 +0,0 @@
-//go:build pyportal
-// +build pyportal
-
-package initdisplay
-
-import (
-	"machine"
-
-	"tinygo.org/x/drivers/ili9341"
-)
-
-func InitDisplay() *ili9341.Device {
-	display := ili9341.NewParallel(
-		machine.LCD_DATA0,
-		machine.TFT_WR,
-		machine.TFT_DC,
-		machine.TFT_CS,
-		machine.TFT_RESET,
-		machine.TFT_RD,
-	)
-
-	// configure backlight
-	backlight := machine.TFT_BACKLIGHT
-	backlight.Configure(machine.PinConfig{machine.PinOutput})
-
-	// configure display
-	display.Configure(ili9341.Config{})
-
-	backlight.High()
-
-	display.SetRotation(ili9341.Rotation270)
-
-	return display
-}
@@ -3,9 +3,9 @@
 package main

 import (
+	"machine"
 	"time"

-	"tinygo.org/x/drivers/examples/ili9341/initdisplay"
 	"tinygo.org/x/drivers/examples/ili9341/pyportal_boing/graphics"
 	"tinygo.org/x/drivers/ili9341"
 )
@@ -44,17 +44,20 @@ var (
 	palette [16]uint16
 )

-var (
-	display *ili9341.Device
-)
-
 func main() {
-	display = initdisplay.InitDisplay()

+	// configure backlight
+	backlight.Configure(machine.PinConfig{machine.PinOutput})
+
+	// configure display
+	display.Configure(ili9341.Config{})
 	print("width, height == ")
 	width, height := display.Size()
 	println(width, height)

+	backlight.High()
+
+	display.SetRotation(ili9341.Rotation270)
 	DrawBackground()

 	startTime = time.Now().UnixNano()
@@ -0,0 +1,23 @@
+//go:build pyportal
+// +build pyportal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewParallel(
+		machine.LCD_DATA0,
+		machine.TFT_WR,
+		machine.TFT_DC,
+		machine.TFT_CS,
+		machine.TFT_RESET,
+		machine.TFT_RD,
+	)
+
+	backlight = machine.TFT_BACKLIGHT
+)
@@ -0,0 +1,30 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI3,
+		machine.LCD_DC,
+		machine.LCD_SS_PIN,
+		machine.LCD_RESET,
+	)
+
+	backlight = machine.LCD_BACKLIGHT
+)
+
+func init() {
+	machine.SPI3.Configure(machine.SPIConfig{
+		SCK:       machine.LCD_SCK_PIN,
+		SDO:       machine.LCD_SDO_PIN,
+		SDI:       machine.LCD_SDI_PIN,
+		Frequency: 40000000,
+	})
+}
@@ -0,0 +1,30 @@
+//go:build atsamd21
+// +build atsamd21
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI0,
+		machine.D0,
+		machine.D1,
+		machine.D2,
+	)
+
+	backlight = machine.D3
+)
+
+func init() {
+	machine.SPI0.Configure(machine.SPIConfig{
+		SCK:       machine.SPI0_SCK_PIN,
+		SDO:       machine.SPI0_SDO_PIN,
+		SDI:       machine.SPI0_SDI_PIN,
+		Frequency: 24000000,
+	})
+}
@@ -2,9 +2,9 @@ package main

 import (
 	"image/color"
+	"machine"
 	"time"

-	"tinygo.org/x/drivers/examples/ili9341/initdisplay"
 	"tinygo.org/x/drivers/ili9341"
 )

@@ -16,15 +16,16 @@ var (
 	white = color.RGBA{255, 255, 255, 255}
 )

-var (
-	display *ili9341.Device
-)
-
 func main() {
-	display := initdisplay.InitDisplay()

+	backlight.Configure(machine.PinConfig{machine.PinOutput})
+
+	display.Configure(ili9341.Config{})
 	width, height := display.Size()

+	display.FillScreen(black)
+	backlight.High()
+
 	display.FillRectangle(0, 0, width/2, height/2, white)
 	display.FillRectangle(width/2, 0, width/2, height/2, red)
 	display.FillRectangle(0, height/2, width/2, height/2, green)
@@ -0,0 +1,23 @@
+//go:build pyportal
+// +build pyportal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewParallel(
+		machine.LCD_DATA0,
+		machine.TFT_WR,
+		machine.TFT_DC,
+		machine.TFT_CS,
+		machine.TFT_RESET,
+		machine.TFT_RD,
+	)
+
+	backlight = machine.TFT_BACKLIGHT
+)
@@ -0,0 +1,30 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI3,
+		machine.LCD_DC,
+		machine.LCD_SS_PIN,
+		machine.LCD_RESET,
+	)
+
+	backlight = machine.LCD_BACKLIGHT
+)
+
+func init() {
+	machine.SPI3.Configure(machine.SPIConfig{
+		SCK:       machine.LCD_SCK_PIN,
+		SDO:       machine.LCD_SDO_PIN,
+		SDI:       machine.LCD_SDI_PIN,
+		Frequency: 40000000,
+	})
+}
@@ -0,0 +1,30 @@
+//go:build atsamd21
+// +build atsamd21
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI0,
+		machine.D0,
+		machine.D1,
+		machine.D2,
+	)
+
+	backlight = machine.D3
+)
+
+func init() {
+	machine.SPI0.Configure(machine.SPIConfig{
+		SCK:       machine.SPI0_SCK_PIN,
+		SDO:       machine.SPI0_SDO_PIN,
+		SDI:       machine.SPI0_SDI_PIN,
+		Frequency: 24000000,
+	})
+}
@@ -3,10 +3,10 @@ package main
 import (
 	"fmt"
 	"image/color"
+	"machine"
 	"strings"
 	"time"

-	"tinygo.org/x/drivers/examples/ili9341/initdisplay"
 	"tinygo.org/x/drivers/ili9341"
 	"tinygo.org/x/drivers/image/jpeg"
 	"tinygo.org/x/drivers/image/png"
@@ -20,10 +20,6 @@ var (
 	green = color.RGBA{0, 255, 0, 255}
 )

-var (
-	display *ili9341.Device
-)
-
 func main() {
 	err := run()
 	for err != nil {
@@ -32,7 +28,9 @@ func main() {
 }

 func run() error {
-	display = initdisplay.InitDisplay()
+	backlight.Configure(machine.PinConfig{machine.PinOutput})
+
+	display.Configure(ili9341.Config{})

 	width, height := display.Size()
 	if width < 320 || height < 240 {
@@ -40,6 +38,7 @@ func run() error {
 	}

 	display.FillScreen(black)
+	backlight.High()

 	for {
 		err := drawJpeg(display)
@@ -0,0 +1,23 @@
+//go:build pyportal
+// +build pyportal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewParallel(
+		machine.LCD_DATA0,
+		machine.TFT_WR,
+		machine.TFT_DC,
+		machine.TFT_CS,
+		machine.TFT_RESET,
+		machine.TFT_RD,
+	)
+
+	backlight = machine.TFT_BACKLIGHT
+)
@@ -0,0 +1,30 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/ili9341"
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI3,
+		machine.LCD_DC,
+		machine.LCD_SS_PIN,
+		machine.LCD_RESET,
+	)
+
+	backlight = machine.LCD_BACKLIGHT
+)
+
+func init() {
+	machine.SPI3.Configure(machine.SPIConfig{
+		SCK:       machine.LCD_SCK_PIN,
+		SDO:       machine.LCD_SDO_PIN,
+		SDI:       machine.LCD_SDI_PIN,
+		Frequency: 40000000,
+	})
+}
@@ -1,37 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/lps22hb"
-)
-
-func main() {
-
-	machine.I2C1.Configure(machine.I2CConfig{
-		SCL:       machine.P0_15, // SCL1 on Nano 33 BLE Sense
-		SDA:       machine.P0_14, // SDA1 on Nano 33 BLE Sense
-		Frequency: machine.TWI_FREQ_400KHZ,
-	})
-
-	sensor := lps22hb.New(machine.I2C1)
-
-	if !sensor.Connected() {
-		println("LPS22HB not connected!")
-		return
-	}
-
-	sensor.Configure()
-
-	for {
-
-		p, _ := sensor.ReadPressure()
-		t, _ := sensor.ReadTemperature()
-		println("p =", float32(p)/1000.0, "hPa / t =", float32(t)/1000.0, "*C")
-		time.Sleep(time.Second)
-		// note: the device would power down itself after each query
-
-	}
-
-}
@@ -23,8 +23,8 @@ func main() {
 		println("Acceleration:", float32(x)/1000000, float32(y)/1000000, float32(z)/1000000)
 		x, y, z = accel.ReadRotation()
 		println("Gyroscope:", float32(x)/1000000, float32(y)/1000000, float32(z)/1000000)
-		x, _ = accel.ReadTemperature()
-		println("Degrees C", float32(x)/1000, "\n\n")
+		t, _ := accel.ReadTemperature()
+		println("Degrees C", t.Celsius(), "\n\n")
 		time.Sleep(time.Millisecond * 1000)
 	}
 }
@@ -6,6 +6,7 @@ import (
 	"machine"
 	"time"

+	"tinygo.org/x/drivers"
 	"tinygo.org/x/drivers/lsm6dsox"
 )

@@ -76,7 +77,7 @@ func calibrateGyro(device *lsm6dsox.Device) {
 }

 // Arduino IDE's Serial Plotter
-func printPlotter(ax, ay, az, gx, gy, gz, t int32) {
+func printPlotter(ax, ay, az, gx, gy, gz int32, t drivers.Temperature) {
 	if SHOW_ACCELERATION {
 		fmt.Printf("AX:%f, AY:%f, AZ:%f,", axis(ax, 0), axis(ay, 0), axis(az, 0))
 	}
@@ -84,7 +85,7 @@ func printPlotter(ax, ay, az, gx, gy, gz, t int32) {
 		fmt.Printf("GX:%f, GY:%f, GZ:%f,", axis(gx, cal[0]), axis(gy, cal[1]), axis(gz, cal[2]))
 	}
 	if SHOW_TEMPERATURE {
-		fmt.Printf("T:%f", float32(t)/1000)
+		fmt.Printf("T:%f", t.Celsius())
 	}
 	println()
 }
@@ -1,103 +0,0 @@
-// LSM9DS1, 9 axis Inertial Measurement Unit (IMU)
-package main
-
-import (
-	"fmt"
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/lsm9ds1"
-)
-
-const (
-	PLOTTER             = false
-	SHOW_ACCELERATION   = true
-	SHOW_ROTATION       = true
-	SHOW_MAGNETIC_FIELD = true
-	SHOW_TEMPERATURE    = true
-)
-
-func main() {
-
-	// I2C configure
-	machine.I2C0.Configure(machine.I2CConfig{})
-
-	// LSM9DS1 setup
-	device := lsm9ds1.New(machine.I2C0)
-	err := device.Configure(lsm9ds1.Configuration{
-		AccelRange:      lsm9ds1.ACCEL_2G,
-		AccelSampleRate: lsm9ds1.ACCEL_SR_119,
-		GyroRange:       lsm9ds1.GYRO_250DPS,
-		GyroSampleRate:  lsm9ds1.GYRO_SR_119,
-		MagRange:        lsm9ds1.MAG_4G,
-		MagSampleRate:   lsm9ds1.MAG_SR_40,
-	})
-	if err != nil {
-		for {
-			println("Failed to configure", err.Error())
-			time.Sleep(time.Second)
-		}
-	}
-
-	for {
-
-		if con, err := device.Connected(); !con || err != nil {
-			println("LSM9DS1 not connected")
-			time.Sleep(time.Second)
-			continue
-		}
-
-		ax, ay, az, _ := device.ReadAcceleration()
-		gx, gy, gz, _ := device.ReadRotation()
-		mx, my, mz, _ := device.ReadMagneticField()
-		t, _ := device.ReadTemperature()
-
-		if PLOTTER {
-			printPlotter(ax, ay, az, gx, gy, gz, mx, my, mz, t)
-			time.Sleep(time.Millisecond * 100)
-		} else {
-			printMonitor(ax, ay, az, gx, gy, gz, mx, my, mz, t)
-			time.Sleep(time.Millisecond * 1000)
-		}
-
-	}
-
-}
-
-// Arduino IDE's Serial Plotter
-func printPlotter(ax, ay, az, gx, gy, gz, mx, my, mz, t int32) {
-	if SHOW_ACCELERATION {
-		fmt.Printf("AX:%f, AY:%f, AZ:%f,", axis(ax), axis(ay), axis(az))
-	}
-	if SHOW_ROTATION {
-		fmt.Printf("GX:%f, GY:%f, GZ:%f,", axis(gx), axis(gy), axis(gz))
-	}
-	if SHOW_MAGNETIC_FIELD {
-		fmt.Printf("MX:%d, MY:%d, MZ:%d,", mx, my, mz)
-	}
-	if SHOW_TEMPERATURE {
-		fmt.Printf("T:%f", float32(t)/1000)
-	}
-	println()
-}
-
-// Any Serial Monitor
-func printMonitor(ax, ay, az, gx, gy, gz, mx, my, mz, t int32) {
-	if SHOW_ACCELERATION {
-		fmt.Printf("Acceleration (g): %f, %f, %f\r\n", axis(ax), axis(ay), axis(az))
-	}
-	if SHOW_ROTATION {
-		fmt.Printf("Rotation (dps): %f, %f, %f\r\n", axis(gx), axis(gy), axis(gz))
-	}
-	if SHOW_MAGNETIC_FIELD {
-		fmt.Printf("Magnetic field (nT): %d, %d, %d\r\n", mx, my, mz)
-	}
-	if SHOW_TEMPERATURE {
-		fmt.Printf("Temperature C: %f\r\n", float32(t)/1000)
-	}
-	println()
-}
-
-func axis(raw int32) float32 {
-	return float32(raw) / 1000000
-}
@@ -19,7 +19,7 @@ func main() {
 		println("Magnetic readings:", x, y, z)

 		c, _ := mag.ReadTemperature()
-		println("Temperature:", float32(c)/1000, "°C")
+		println("Temperature:", c.Celsius(), "°C")

 		time.Sleep(time.Millisecond * 100)
 	}
@@ -20,7 +20,7 @@ func main() {

 		temp, _ := thermo.ReadTemperature()

-		print(fmt.Sprintf("%.2f°C\r\n", float32(temp)/1000.0))
+		print(fmt.Sprintf("%.2f°C\r\n", temp.Celsius()))

 		time.Sleep(time.Millisecond * 1000)
 	}
@@ -1,91 +0,0 @@
-//go:build nano_rp2040
-// +build nano_rp2040
-
-// This examples shows how to control RGB LED connected to
-// NINA-W102 chip on Arduino Nano RP2040 Connect board
-// Built-in LED code added for API comparison
-
-package main
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers/wifinina"
-)
-
-const (
-	LED = machine.LED
-
-	// Arduino Nano RP2040 Connect board RGB LED pins
-	// See https://docs.arduino.cc/static/3525d638b5c76a2d19588d6b41cd02a0/ABX00053-full-pinout.pdf
-	LED_R wifinina.Pin = 27
-	LED_G wifinina.Pin = 25
-	LED_B wifinina.Pin = 26
-)
-
-var (
-
-	// these are the default pins for the Arduino Nano-RP2040 Connect
-	spi = machine.NINA_SPI
-
-	// this is the ESP chip that has the WIFININA firmware flashed on it
-	device *wifinina.Device
-)
-
-func setup() {
-
-	// Configure SPI for 8Mhz, Mode 0, MSB First
-	spi.Configure(machine.SPIConfig{
-		Frequency: 8 * 1e6,
-		SDO:       machine.NINA_SDO,
-		SDI:       machine.NINA_SDI,
-		SCK:       machine.NINA_SCK,
-	})
-
-	device = wifinina.New(spi,
-		machine.NINA_CS,
-		machine.NINA_ACK,
-		machine.NINA_GPIO0,
-		machine.NINA_RESETN)
-	device.Configure()
-
-	time.Sleep(time.Second)
-
-	LED.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	LED_R.Configure(wifinina.PinConfig{Mode: wifinina.PinOutput})
-	LED_G.Configure(wifinina.PinConfig{Mode: wifinina.PinOutput})
-	LED_B.Configure(wifinina.PinConfig{Mode: wifinina.PinOutput})
-}
-
-func main() {
-
-	setup()
-
-	LED.Low()    // OFF
-	LED_R.High() // OFF
-	LED_G.High() // OFF
-	LED_B.High() // OFF
-
-	go func() {
-		for {
-			LED.Low()
-			time.Sleep(time.Second)
-			LED.High()
-			time.Sleep(time.Second)
-		}
-	}()
-
-	for {
-		LED_R.Low() // ON
-		time.Sleep(time.Second)
-		LED_R.High() // OFF
-		LED_G.Low()  // ON
-		time.Sleep(time.Second)
-		LED_G.High() // OFF
-		LED_B.Low()  // ON
-		time.Sleep(time.Second)
-		LED_B.High() // OFF
-	}
-
-}
@@ -1,178 +0,0 @@
-// Package hts221 implements a driver for HTS221,
-// a capacitive digital sensor for relative humidity and temperature.
-//
-// Datasheet: https://www.st.com/resource/en/datasheet/hts221.pdf
-//
-package hts221
-
-import (
-	"errors"
-
-	"tinygo.org/x/drivers"
-)
-
-// Device wraps an I2C connection to a HTS221 device.
-type Device struct {
-	bus              drivers.I2C
-	Address          uint8
-	humiditySlope    float32
-	humidityZero     float32
-	temperatureSlope float32
-	temperatureZero  float32
-}
-
-// Connected returns whether HTS221 has been found.
-// It does a "who am I" request and checks the response.
-func (d *Device) Connected() bool {
-	data := []byte{0}
-	d.bus.ReadRegister(d.Address, HTS221_WHO_AM_I_REG, data)
-	return data[0] == 0xBC
-}
-
-// Configure sets up the HTS221 device for communication.
-func (d *Device) Configure() {
-	// read calibration data
-	d.calibration()
-	// activate device and use block data update mode
-	d.Power(true)
-}
-
-// Power is for turn on/off the HTS221 device
-func (d *Device) Power(status bool) {
-	data := []byte{0}
-	if status {
-		data[0] = 0x84
-	}
-	d.bus.WriteRegister(d.Address, HTS221_CTRL1_REG, data)
-}
-
-// ReadHumidity returns the relative humidity in percent * 100.
-// Returns an error if the device is not turned on.
-func (d *Device) ReadHumidity() (humidity int32, err error) {
-	err = d.waitForOneShot(0x02)
-	if err != nil {
-		return
-	}
-
-	// read data and calibrate
-	data := []byte{0, 0}
-	d.bus.ReadRegister(d.Address, HTS221_HUMID_OUT_REG, data[:1])
-	d.bus.ReadRegister(d.Address, HTS221_HUMID_OUT_REG+1, data[1:])
-	hValue := readInt(data[1], data[0])
-	hValueCalib := float32(hValue)*d.humiditySlope + d.humidityZero
-
-	return int32(hValueCalib * 100), nil
-}
-
-// ReadTemperature returns the temperature in celsius milli degrees (°C/1000).
-// Returns an error if the device is not turned on.
-func (d *Device) ReadTemperature() (temperature int32, err error) {
-	err = d.waitForOneShot(0x01)
-	if err != nil {
-		return
-	}
-
-	// read data and calibrate
-	data := []byte{0, 0}
-	d.bus.ReadRegister(d.Address, HTS221_TEMP_OUT_REG, data[:1])
-	d.bus.ReadRegister(d.Address, HTS221_TEMP_OUT_REG+1, data[1:])
-	tValue := readInt(data[1], data[0])
-	tValueCalib := float32(tValue)*d.temperatureSlope + d.temperatureZero
-
-	return int32(tValueCalib * 1000), nil
-}
-
-// Resolution sets the HTS221's resolution mode.
-// The higher resolutions are more accurate but comsume more power (see datasheet).
-// The number of averaged samples will be (h + 2) ^ 2, (t + 1) ^ 2
-//
-func (d *Device) Resolution(h uint8, t uint8) {
-	if h > 7 {
-		h = 3 // default
-	}
-	if t > 7 {
-		t = 3 // default
-	}
-	d.bus.WriteRegister(d.Address, HTS221_AV_CONF_REG, []byte{h<<3 | t})
-}
-
-// private functions
-
-// read factory calibration data
-func (d *Device) calibration() {
-	h0rH, h1rH := []byte{0}, []byte{0}
-	t0degC, t1degC := []byte{0}, []byte{0}
-	t1t0msb := []byte{0}
-	h0t0Out, h1t0Out := []byte{0, 0}, []byte{0, 0}
-	t0Out, t1Out := []byte{0, 0}, []byte{0, 0}
-
-	d.bus.ReadRegister(d.Address, HTS221_H0_rH_x2_REG, h0rH)
-	d.bus.ReadRegister(d.Address, HTS221_H1_rH_x2_REG, h1rH)
-	d.bus.ReadRegister(d.Address, HTS221_T0_degC_x8_REG, t0degC)
-	d.bus.ReadRegister(d.Address, HTS221_T1_degC_x8_REG, t1degC)
-	d.bus.ReadRegister(d.Address, HTS221_T1_T0_MSB_REG, t1t0msb)
-	d.bus.ReadRegister(d.Address, HTS221_H0_T0_OUT_REG, h0t0Out[:1])
-	d.bus.ReadRegister(d.Address, HTS221_H0_T0_OUT_REG+1, h0t0Out[1:])
-	d.bus.ReadRegister(d.Address, HTS221_H1_T0_OUT_REG, h1t0Out[:1])
-	d.bus.ReadRegister(d.Address, HTS221_H1_T0_OUT_REG+1, h1t0Out[1:])
-	d.bus.ReadRegister(d.Address, HTS221_T0_OUT_REG, t0Out[:1])
-	d.bus.ReadRegister(d.Address, HTS221_T0_OUT_REG+1, t0Out[1:])
-	d.bus.ReadRegister(d.Address, HTS221_T1_OUT_REG, t1Out[:1])
-	d.bus.ReadRegister(d.Address, HTS221_T1_OUT_REG+1, t1Out[1:])
-
-	h0rH_v := float32(h0rH[0]) / 2.0
-	h1rH_v := float32(h1rH[0]) / 2.0
-	t0degC_v := float32(readUint(t1t0msb[0]&0x03, t0degC[0])) / 8.0
-	t1degC_v := float32(readUint(t1t0msb[0]&0x0C>>2, t1degC[0])) / 8.0
-	h0t0Out_v := float32(readInt(h0t0Out[1], h0t0Out[0]))
-	h1t0Out_v := float32(readInt(h1t0Out[1], h1t0Out[0]))
-	t0Out_v := float32(readInt(t0Out[1], t0Out[0]))
-	t1Out_v := float32(readInt(t1Out[1], t1Out[0]))
-
-	d.humiditySlope = (h1rH_v - h0rH_v) / (h1t0Out_v - h0t0Out_v)
-	d.humidityZero = h0rH_v - d.humiditySlope*h0t0Out_v
-	d.temperatureSlope = (t1degC_v - t0degC_v) / (t1Out_v - t0Out_v)
-	d.temperatureZero = t0degC_v - d.temperatureSlope*t0Out_v
-}
-
-// wait and trigger one shot in block update
-func (d *Device) waitForOneShot(filter uint8) error {
-	data := []byte{0}
-
-	// check if the device is on
-	d.bus.ReadRegister(d.Address, HTS221_CTRL1_REG, data)
-	if data[0]&0x80 == 0 {
-		return errors.New("device is off, unable to query")
-	}
-
-	// wait until one shot (one conversion) is ready to go
-	data[0] = 1
-	for {
-		d.bus.ReadRegister(d.Address, HTS221_CTRL2_REG, data)
-		if data[0]&0x01 == 0 {
-			break
-		}
-	}
-
-	// trigger one shot
-	d.bus.WriteRegister(d.Address, HTS221_CTRL2_REG, []byte{0x01})
-
-	// wait until conversion completed
-	data[0] = 0
-	for {
-		d.bus.ReadRegister(d.Address, HTS221_STATUS_REG, data)
-		if data[0]&filter == filter {
-			break
-		}
-	}
-
-	return nil
-}
-
-func readUint(msb byte, lsb byte) uint16 {
-	return uint16(msb)<<8 | uint16(lsb)
-}
-
-func readInt(msb byte, lsb byte) int16 {
-	return int16(uint16(msb)<<8 | uint16(lsb))
-}
@@ -1,14 +0,0 @@
-//go:build !nano_33_ble
-// +build !nano_33_ble
-
-package hts221
-
-import "tinygo.org/x/drivers"
-
-// New creates a new HTS221 connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) Device {
-	return Device{bus: bus, Address: HTS221_ADDRESS}
-}
@@ -1,29 +0,0 @@
-//go:build nano_33_ble
-// +build nano_33_ble
-
-package hts221
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers"
-)
-
-// New creates a new HTS221 connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) Device {
-	// turn on internal power pin (machine.P0_22) and I2C1 pullups power pin (machine.P1_00)
-	// and wait a moment.
-	ENV := machine.P0_22
-	ENV.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	ENV.High()
-	R := machine.P1_00
-	R.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	R.High()
-	time.Sleep(time.Millisecond * 10)
-
-	return Device{bus: bus, Address: HTS221_ADDRESS}
-}
@@ -1,27 +0,0 @@
-package hts221
-
-const (
-
-	// I2C address
-	HTS221_ADDRESS = 0x5F
-
-	// control/status registers
-	HTS221_WHO_AM_I_REG  = 0x0F
-	HTS221_AV_CONF_REG   = 0x10
-	HTS221_CTRL1_REG     = 0x20
-	HTS221_CTRL2_REG     = 0x21
-	HTS221_STATUS_REG    = 0x27
-	HTS221_HUMID_OUT_REG = 0x28
-	HTS221_TEMP_OUT_REG  = 0x2A
-
-	// calibration registers
-	HTS221_H0_rH_x2_REG   = 0x30
-	HTS221_H1_rH_x2_REG   = 0x31
-	HTS221_T0_degC_x8_REG = 0x32
-	HTS221_T1_degC_x8_REG = 0x33
-	HTS221_T1_T0_MSB_REG  = 0x35
-	HTS221_H0_T0_OUT_REG  = 0x36
-	HTS221_H1_T0_OUT_REG  = 0x3A
-	HTS221_T0_OUT_REG     = 0x3C
-	HTS221_T1_OUT_REG     = 0x3E
-)
@@ -1,280 +0,0 @@
-package i2csoft
-
-import (
-	"errors"
-	"machine"
-)
-
-// I2C is an I2C implementation by Software. Since it is implemented by
-// software, it can be used with microcontrollers that do not have I2C
-// function. This is not efficient but works around broken or missing drivers.
-type I2C struct {
-	scl      machine.Pin
-	sda      machine.Pin
-	nack     bool
-	baudrate uint32
-}
-
-// I2CConfig is used to store config info for I2C.
-type I2CConfig struct {
-	Frequency uint32
-	SCL       machine.Pin
-	SDA       machine.Pin
-}
-
-var (
-	errSI2CAckExpected = errors.New("I2C error: expected ACK not NACK")
-)
-
-// New returns the i2csoft driver. For the arguments, specify the pins to be
-// used as SCL and SDA. As I2C is implemented in software, any GPIO pin can be
-// specified.
-func New(sclPin, sdaPin machine.Pin) *I2C {
-	return &I2C{
-		scl:      sclPin,
-		sda:      sdaPin,
-		baudrate: 100e3,
-	}
-}
-
-// Configure is intended to setup the I2C interface.
-func (i2c *I2C) Configure(config I2CConfig) error {
-	// Default I2C bus speed is 100 kHz.
-	if config.Frequency != 0 {
-		i2c.SetBaudRate(config.Frequency)
-	}
-
-	// This exists for compatibility with machine.I2CConfig. SCL and SDA must
-	// be set at the same time. Because Pin(0) is sometimes set, it is not
-	// checked for 0.
-	if config.SCL != config.SDA {
-		i2c.scl = config.SCL
-		i2c.sda = config.SDA
-	}
-
-	// enable pins
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	i2c.sda.High()
-	i2c.scl.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	i2c.scl.High()
-
-	return nil
-}
-
-// SetBaudRate sets the communication speed for the I2C.
-func (i2c *I2C) SetBaudRate(br uint32) {
-	// At this time, the value of i2c.baudrate is ignored because it is fixed
-	// at 100 kHz. SetBaudrate() is exist for compatibility with machine.I2C.
-	i2c.baudrate = br
-}
-
-// Tx does a single I2C transaction at the specified address.
-// It clocks out the given address, writes the bytes in w, reads back len(r)
-// bytes and stores them in r, and generates a stop condition on the bus.
-func (i2c *I2C) Tx(addr uint16, w, r []byte) error {
-	i2c.nack = false
-	if len(w) != 0 {
-		// send start/address for write
-		i2c.sendAddress(addr, true)
-
-		// wait until transmission complete
-
-		// ACK received (0: ACK, 1: NACK)
-		if i2c.nack {
-			i2c.signalStop()
-			return errSI2CAckExpected
-		}
-
-		// write data
-		for _, b := range w {
-			i2c.writeByte(b)
-		}
-
-		i2c.signalStop()
-	}
-	if len(r) != 0 {
-		// send start/address for read
-		i2c.sendAddress(addr, false)
-
-		// wait transmission complete
-
-		// ACK received (0: ACK, 1: NACK)
-		if i2c.nack {
-			i2c.signalStop()
-			return errSI2CAckExpected
-		}
-
-		// read first byte
-		r[0] = i2c.readByte()
-		for i := 1; i < len(r); i++ {
-			// Send an ACK
-
-			i2c.signalRead()
-
-			// Read data and send the ACK
-			r[i] = i2c.readByte()
-		}
-
-		// Send NACK to end transmission
-		i2c.sendNack()
-
-		i2c.signalStop()
-	}
-
-	return nil
-}
-
-// writeByte writes a single byte to the I2C bus.
-func (i2c *I2C) writeByte(data byte) {
-	// Send data byte
-	i2c.scl.Low()
-	i2c.sda.High()
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	i2c.wait()
-
-	for i := 0; i < 8; i++ {
-		i2c.scl.Low()
-		if ((data >> (7 - i)) & 1) == 1 {
-			i2c.sda.High()
-		} else {
-			i2c.sda.Low()
-		}
-		i2c.wait()
-		i2c.wait()
-		i2c.scl.High()
-		i2c.wait()
-		i2c.wait()
-	}
-
-	i2c.scl.Low()
-	i2c.wait()
-	i2c.wait()
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinInput})
-	i2c.scl.High()
-	i2c.wait()
-
-	i2c.nack = i2c.sda.Get()
-
-	i2c.wait()
-
-	// wait until transmission successful
-}
-
-// sendAddress sends the address and start signal
-func (i2c *I2C) sendAddress(address uint16, write bool) {
-	data := (address << 1)
-	if !write {
-		data |= 1 // set read flag
-	}
-
-	i2c.scl.High()
-	i2c.sda.Low()
-	i2c.wait()
-	i2c.wait()
-	for i := 0; i < 8; i++ {
-		i2c.scl.Low()
-		if ((data >> (7 - i)) & 1) == 1 {
-			i2c.sda.High()
-		} else {
-			i2c.sda.Low()
-		}
-		i2c.wait()
-		i2c.wait()
-		i2c.scl.High()
-		i2c.wait()
-		i2c.wait()
-	}
-
-	i2c.scl.Low()
-	i2c.wait()
-	i2c.wait()
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinInput})
-	i2c.scl.High()
-	i2c.wait()
-
-	i2c.nack = i2c.sda.Get()
-
-	i2c.wait()
-
-	// wait until bus ready
-}
-
-func (i2c *I2C) signalStop() {
-	i2c.scl.Low()
-	i2c.sda.Low()
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	i2c.wait()
-	i2c.wait()
-	i2c.scl.High()
-	i2c.wait()
-	i2c.wait()
-	i2c.sda.High()
-	i2c.wait()
-	i2c.wait()
-}
-
-func (i2c *I2C) signalRead() {
-	i2c.wait()
-	i2c.wait()
-	i2c.scl.Low()
-	i2c.sda.Low()
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	i2c.wait()
-	i2c.wait()
-	i2c.scl.High()
-	i2c.wait()
-	i2c.wait()
-}
-
-func (i2c *I2C) readByte() byte {
-	var data byte
-	for i := 0; i < 8; i++ {
-		i2c.scl.Low()
-		i2c.sda.Configure(machine.PinConfig{Mode: machine.PinInput})
-		i2c.wait()
-		i2c.wait()
-		i2c.scl.High()
-		if i2c.sda.Get() {
-			data |= 1 << (7 - i)
-		}
-		i2c.wait()
-		i2c.wait()
-	}
-	return data
-}
-
-func (i2c *I2C) sendNack() {
-	i2c.wait()
-	i2c.wait()
-	i2c.scl.Low()
-	i2c.sda.High()
-	i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	i2c.wait()
-	i2c.wait()
-	i2c.scl.High()
-	i2c.wait()
-	i2c.wait()
-}
-
-// WriteRegister transmits first the register and then the data to the
-// peripheral device.
-//
-// Many I2C-compatible devices are organized in terms of registers. This method
-// is a shortcut to easily write to such registers. Also, it only works for
-// devices with 7-bit addresses, which is the vast majority.
-func (i2c *I2C) WriteRegister(address uint8, register uint8, data []byte) error {
-	buf := make([]uint8, len(data)+1)
-	buf[0] = register
-	copy(buf[1:], data)
-	return i2c.Tx(uint16(address), buf, nil)
-}
-
-// ReadRegister transmits the register, restarts the connection as a read
-// operation, and reads the response.
-//
-// Many I2C-compatible devices are organized in terms of registers. This method
-// is a shortcut to easily read such registers. Also, it only works for devices
-// with 7-bit addresses, which is the vast majority.
-func (i2c *I2C) ReadRegister(address uint8, register uint8, data []byte) error {
-	return i2c.Tx(uint16(address), []byte{register}, data)
-}
@@ -1,17 +0,0 @@
-//go:build atsamd51 || atsame5x
-// +build atsamd51 atsame5x
-
-package i2csoft
-
-import (
-	"device"
-)
-
-// wait waits for half the time of the SCL operation interval. It is set to
-// about 100 kHz.
-func (i2c *I2C) wait() {
-	wait := 20
-	for i := 0; i < wait; i++ {
-		device.Asm(`nop`)
-	}
-}
@@ -1,17 +0,0 @@
-//go:build esp32
-// +build esp32
-
-package i2csoft
-
-import (
-	"device"
-)
-
-// wait waits for half the time of the SCL operation interval. It is set to
-// about 100 kHz.
-func (i2c *I2C) wait() {
-	wait := 60
-	for i := 0; i < wait; i++ {
-		device.Asm(`nop`)
-	}
-}
@@ -1,17 +0,0 @@
-//go:build nrf52840
-// +build nrf52840
-
-package i2csoft
-
-import (
-	"device"
-)
-
-// wait waits for half the time of the SCL operation interval. It is set to
-// about 100 kHz.
-func (i2c *I2C) wait() {
-	wait := 26
-	for i := 0; i < wait; i++ {
-		device.Asm(`nop`)
-	}
-}
@@ -1,16 +0,0 @@
-//go:build !esp32 && !atsamd51 && !atsame5x && !stm32f4 && !rp2040 && !nrf52840
-// +build !esp32,!atsamd51,!atsame5x,!stm32f4,!rp2040,!nrf52840
-
-package i2csoft
-
-import (
-	"device"
-)
-
-// wait waits for half the time of the SCL operation interval.
-func (i2c *I2C) wait() {
-	wait := 20
-	for i := 0; i < wait; i++ {
-		device.Asm(`nop`)
-	}
-}
@@ -1,17 +0,0 @@
-//go:build rp2040
-// +build rp2040
-
-package i2csoft
-
-import (
-	"device"
-)
-
-// wait waits for half the time of the SCL operation interval. It is set to
-// about 100 kHz.
-func (i2c *I2C) wait() {
-	wait := 50
-	for i := 0; i < wait; i++ {
-		device.Asm(`nop`)
-	}
-}
@@ -1,17 +0,0 @@
-//go:build stm32f4
-// +build stm32f4
-
-package i2csoft
-
-import (
-	"device"
-)
-
-// wait waits for half the time of the SCL operation interval. It is set to
-// about 100 kHz.
-func (i2c *I2C) wait() {
-	wait := 77
-	for i := 0; i < wait; i++ {
-		device.Asm(`nop`)
-	}
-}
@@ -1,73 +0,0 @@
-// Package lps22hb implements a driver for LPS22HB, a MEMS nano pressure sensor.
-//
-// Datasheet: https://www.st.com/resource/en/datasheet/dm00140895.pdf
-//
-package lps22hb
-
-import (
-	"tinygo.org/x/drivers"
-)
-
-// Device wraps an I2C connection to a HTS221 device.
-type Device struct {
-	bus     drivers.I2C
-	Address uint8
-}
-
-// Connected returns whether LPS22HB has been found.
-// It does a "who am I" request and checks the response.
-func (d *Device) Connected() bool {
-	data := []byte{0}
-	d.bus.ReadRegister(d.Address, LPS22HB_WHO_AM_I_REG, data)
-	return data[0] == 0xB1
-}
-
-// Configure sets up the LPS22HB device for communication.
-func (d *Device) Configure() {
-	// set to block update mode
-	d.bus.WriteRegister(d.Address, LPS22HB_CTRL1_REG, []byte{0x02})
-}
-
-// ReadPressure returns the pressure in milli pascals (mPa).
-func (d *Device) ReadPressure() (pressure int32, err error) {
-	d.waitForOneShot()
-
-	// read data
-	data := []byte{0, 0, 0}
-	d.bus.ReadRegister(d.Address, LPS22HB_PRESS_OUT_REG, data[:1])
-	d.bus.ReadRegister(d.Address, LPS22HB_PRESS_OUT_REG+1, data[1:2])
-	d.bus.ReadRegister(d.Address, LPS22HB_PRESS_OUT_REG+2, data[2:])
-	pValue := float32(uint32(data[2])<<16|uint32(data[1])<<8|uint32(data[0])) / 4096.0
-
-	return int32(pValue * 1000), nil
-}
-
-// ReadTemperature returns the temperature in celsius milli degrees (°C/1000).
-func (d *Device) ReadTemperature() (temperature int32, err error) {
-	d.waitForOneShot()
-
-	// read data
-	data := []byte{0, 0}
-	d.bus.ReadRegister(d.Address, LPS22HB_TEMP_OUT_REG, data[:1])
-	d.bus.ReadRegister(d.Address, LPS22HB_TEMP_OUT_REG+1, data[1:])
-	tValue := float32(int16(uint16(data[1])<<8|uint16(data[0]))) / 100.0
-
-	return int32(tValue * 1000), nil
-}
-
-// private functions
-
-// wait and trigger one shot in block update
-func (d *Device) waitForOneShot() {
-	// trigger one shot
-	d.bus.WriteRegister(d.Address, LPS22HB_CTRL2_REG, []byte{0x01})
-
-	// wait until one shot is cleared
-	data := []byte{1}
-	for {
-		d.bus.ReadRegister(d.Address, LPS22HB_CTRL2_REG, data)
-		if data[0]&0x01 == 0 {
-			break
-		}
-	}
-}
@@ -1,14 +0,0 @@
-//go:build !nano_33_ble
-// +build !nano_33_ble
-
-package lps22hb
-
-import "tinygo.org/x/drivers"
-
-// New creates a new LPS22HB connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) Device {
-	return Device{bus: bus, Address: LPS22HB_ADDRESS}
-}
@@ -1,29 +0,0 @@
-//go:build nano_33_ble
-// +build nano_33_ble
-
-package lps22hb
-
-import (
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers"
-)
-
-// New creates a new LPS22HB connection. The I2C bus must already be
-// configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) Device {
-	// turn on internal power pin (machine.P0_22) and I2C1 pullups power pin (machine.P1_00)
-	// and wait a moment.
-	ENV := machine.P0_22
-	ENV.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	ENV.High()
-	R := machine.P1_00
-	R.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	R.High()
-	time.Sleep(time.Millisecond * 10)
-
-	return Device{bus: bus, Address: LPS22HB_ADDRESS}
-}
@@ -1,15 +0,0 @@
-package lps22hb
-
-const (
-
-	// I2C address
-	LPS22HB_ADDRESS = 0x5C
-
-	// control/status registers
-	LPS22HB_WHO_AM_I_REG  = 0x0F
-	LPS22HB_CTRL1_REG     = 0x10
-	LPS22HB_CTRL2_REG     = 0x11
-	LPS22HB_STATUS_REG    = 0x27
-	LPS22HB_PRESS_OUT_REG = 0x28
-	LPS22HB_TEMP_OUT_REG  = 0x2B
-)
@@ -191,14 +191,14 @@ func (d *Device) ReadCompass() (h int32) {
 }

 // ReadTemperature returns the temperature in Celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (c int32, e error) {
+func (d *Device) ReadTemperature() (c drivers.Temperature, e error) {

 	data1, data2 := []byte{0}, []byte{0}
 	d.bus.ReadRegister(uint8(d.AccelAddress), OUT_TEMP_H_A, data1)
 	d.bus.ReadRegister(uint8(d.AccelAddress), OUT_TEMP_L_A, data2)

 	t := int16((uint16(data1[0])<<8 | uint16(data2[0]))) >> 4 // temperature offsef from 25 °C
-	c = int32((float32(25) + float32(t)/8) * 1000)
+	c = drivers.Temperature(t)*125 + 25000
 	e = nil
 	return
 }
@@ -165,13 +165,13 @@ func (d *Device) ReadRotation() (x int32, y int32, z int32) {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (int32, error) {
+func (d *Device) ReadTemperature() (drivers.Temperature, error) {
 	d.bus.ReadRegister(uint8(d.Address), OUT_TEMP_L, d.dataBufferTwo)

 	// From "Table 5. Temperature sensor characteristics"
 	// temp = value/16 + 25
 	t := 25000 + (int32(int16((int16(d.dataBufferTwo[1])<<8)|int16(d.dataBufferTwo[0])))*125)/2
-	return t, nil
+	return drivers.Temperature(t), nil
 }

 // ReadSteps returns the steps of the pedometer
@@ -110,11 +110,11 @@ func (d *Device) ReadRotation() (x int32, y int32, z int32) {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (int32, error) {
+func (d *Device) ReadTemperature() (drivers.Temperature, error) {
 	d.bus.ReadRegister(uint8(d.Address), OUT_TEMP_L, d.dataBufferTwo)

 	// From "Table 4. Temperature sensor characteristics"
 	// temp = value/256 + 25
 	t := 25000 + (int32(int16((int16(d.dataBufferTwo[1])<<8)|int16(d.dataBufferTwo[0])))*125)/32
-	return t, nil
+	return drivers.Temperature(t), nil
 }
@@ -1,227 +0,0 @@
-// LSM9DS1, 9 axis Inertial Measurement Unit (IMU)
-//
-// Datasheet: https://www.st.com/resource/en/datasheet/lsm6ds3.pdf
-//
-package lsm9ds1 // import "tinygo.org/x/drivers/lsm9ds1"
-
-import (
-	"errors"
-
-	"tinygo.org/x/drivers"
-)
-
-type AccelRange uint8
-type AccelSampleRate uint8
-type AccelBandwidth uint8
-
-type GyroRange uint8
-type GyroSampleRate uint8
-
-type MagRange uint8
-type MagSampleRate uint8
-
-// Device wraps connection to a LSM9DS1 device.
-type Device struct {
-	bus             drivers.I2C
-	AccelAddress    uint8
-	MagAddress      uint8
-	accelMultiplier int32
-	gyroMultiplier  int32
-	magMultiplier   int32
-	dataBufferSix   []uint8
-	dataBufferTwo   []uint8
-}
-
-// Configuration for LSM9DS1 device.
-type Configuration struct {
-	AccelRange      AccelRange
-	AccelSampleRate AccelSampleRate
-	AccelBandWidth  AccelBandwidth
-	GyroRange       GyroRange
-	GyroSampleRate  GyroSampleRate
-	MagRange        MagRange
-	MagSampleRate   MagSampleRate
-}
-
-var errNotConnected = errors.New("lsm9ds1: failed to communicate with either acel/gyro or magnet sensor")
-
-// New creates a new LSM9DS1 connection. The I2C bus must already be configured.
-//
-// This function only creates the Device object, it does not touch the device.
-func New(bus drivers.I2C) *Device {
-	return &Device{
-		bus:           bus,
-		AccelAddress:  ACCEL_ADDRESS,
-		MagAddress:    MAG_ADDRESS,
-		dataBufferSix: make([]uint8, 6),
-		dataBufferTwo: make([]uint8, 2),
-	}
-}
-
-// Connected returns whether both sensor on LSM9DS1 has been found.
-// It does two "who am I" requests and checks the responses.
-// In a rare case of an I2C bus issue, it can also return an error.
-// Case of boolean false and error nil means I2C is up,
-// but "who am I" responses have unexpected values.
-func (d *Device) Connected() (connected bool, err error) {
-	data1, data2 := []byte{0}, []byte{0}
-	err = d.bus.ReadRegister(d.AccelAddress, WHO_AM_I, data1)
-	if err != nil {
-		return false, err
-	}
-	err = d.bus.ReadRegister(d.MagAddress, WHO_AM_I_M, data2)
-	if err != nil {
-		return false, err
-	}
-	return data1[0] == 0x68 && data2[0] == 0x3D, nil
-}
-
-// ReadAcceleration reads the current acceleration from the device and returns
-// it in µg (micro-gravity). When one of the axes is pointing straight to Earth
-// and the sensor is not moving the returned value will be around 1000000 or
-// -1000000.
-func (d *Device) ReadAcceleration() (x, y, z int32, err error) {
-	err = d.bus.ReadRegister(uint8(d.AccelAddress), OUT_X_L_XL, d.dataBufferSix)
-	if err != nil {
-		return
-	}
-	x = int32(int16((uint16(d.dataBufferSix[1])<<8)|uint16(d.dataBufferSix[0]))) * d.accelMultiplier
-	y = int32(int16((uint16(d.dataBufferSix[3])<<8)|uint16(d.dataBufferSix[2]))) * d.accelMultiplier
-	z = int32(int16((uint16(d.dataBufferSix[5])<<8)|uint16(d.dataBufferSix[4]))) * d.accelMultiplier
-	return
-}
-
-// ReadRotation reads the current rotation from the device and returns it in
-// µ°/s (micro-degrees/sec). This means that if you were to do a complete
-// rotation along one axis and while doing so integrate all values over time,
-// you would get a value close to 360000000.
-func (d *Device) ReadRotation() (x, y, z int32, err error) {
-	err = d.bus.ReadRegister(uint8(d.AccelAddress), OUT_X_L_G, d.dataBufferSix)
-	if err != nil {
-		return
-	}
-	x = int32(int16((uint16(d.dataBufferSix[1])<<8)|uint16(d.dataBufferSix[0]))) * d.gyroMultiplier
-	y = int32(int16((uint16(d.dataBufferSix[3])<<8)|uint16(d.dataBufferSix[2]))) * d.gyroMultiplier
-	z = int32(int16((uint16(d.dataBufferSix[5])<<8)|uint16(d.dataBufferSix[4]))) * d.gyroMultiplier
-	return
-}
-
-// ReadMagneticField reads the current magnetic field from the device and returns
-// it in nT (nanotesla). 1 G (gauss) = 100_000 nT (nanotesla).
-func (d *Device) ReadMagneticField() (x, y, z int32, err error) {
-	err = d.bus.ReadRegister(uint8(d.MagAddress), OUT_X_L_M, d.dataBufferSix)
-	if err != nil {
-		return
-	}
-	x = int32(int16((int16(d.dataBufferSix[1])<<8)|int16(d.dataBufferSix[0]))) * d.magMultiplier
-	y = int32(int16((int16(d.dataBufferSix[3])<<8)|int16(d.dataBufferSix[2]))) * d.magMultiplier
-	z = int32(int16((int16(d.dataBufferSix[5])<<8)|int16(d.dataBufferSix[4]))) * d.magMultiplier
-	return
-}
-
-// ReadTemperature returns the temperature in Celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (t int32, err error) {
-	err = d.bus.ReadRegister(uint8(d.AccelAddress), OUT_TEMP_L, d.dataBufferTwo)
-	if err != nil {
-		return
-	}
-	// From "Table 5. Temperature sensor characteristics"
-	// temp = value/16 + 25
-	t = 25000 + (int32(int16((int16(d.dataBufferTwo[1])<<8)|int16(d.dataBufferTwo[0])))*125)/2
-	return
-}
-
-// --- end of public methods --------------------------------------------------
-
-// doConfigure is called by public Configure methods after all
-// necessary board-specific initialisations are taken care of
-func (d *Device) doConfigure(cfg Configuration) (err error) {
-
-	// Verify unit communication
-	if con, err := d.Connected(); !con || err != nil {
-		return errNotConnected
-	}
-
-	// Multipliers come from "Table 3. Sensor characteristics" of the datasheet * 1000
-	switch cfg.AccelRange {
-	case ACCEL_2G:
-		d.accelMultiplier = 61
-	case ACCEL_4G:
-		d.accelMultiplier = 122
-	case ACCEL_8G:
-		d.accelMultiplier = 244
-	case ACCEL_16G:
-		d.accelMultiplier = 732
-	}
-	switch cfg.GyroRange {
-	case GYRO_250DPS:
-		d.gyroMultiplier = 8750
-	case GYRO_500DPS:
-		d.gyroMultiplier = 17500
-	case GYRO_2000DPS:
-		d.gyroMultiplier = 70000
-	}
-	switch cfg.MagRange {
-	case MAG_4G:
-		d.magMultiplier = 14
-	case MAG_8G:
-		d.magMultiplier = 29
-	case MAG_12G:
-		d.magMultiplier = 43
-	case MAG_16G:
-		d.magMultiplier = 58
-	}
-
-	data := make([]byte, 1)
-
-	// Configure accelerometer
-	// Sample rate & measurement range
-	data[0] = uint8(cfg.AccelSampleRate)<<5 | uint8(cfg.AccelRange)<<3
-	err = d.bus.WriteRegister(d.AccelAddress, CTRL_REG6_XL, data)
-	if err != nil {
-		return
-	}
-
-	// Configure gyroscope
-	// Sample rate & measurement range
-	data[0] = uint8(cfg.GyroSampleRate)<<5 | uint8(cfg.GyroRange)<<3
-	err = d.bus.WriteRegister(d.AccelAddress, CTRL_REG1_G, data)
-	if err != nil {
-		return
-	}
-
-	// Configure magnetometer
-
-	// Temperature compensation enabled
-	// High-performance mode XY axis
-	// Sample rate
-	data[0] = 0b10000000 | 0b01000000 | uint8(cfg.MagSampleRate)<<2
-	err = d.bus.WriteRegister(d.MagAddress, CTRL_REG1_M, data)
-	if err != nil {
-		return
-	}
-
-	// Measurement range
-	data[0] = uint8(cfg.MagRange) << 5
-	err = d.bus.WriteRegister(d.MagAddress, CTRL_REG2_M, data)
-	if err != nil {
-		return
-	}
-
-	// Continuous-conversion mode
-	// https://electronics.stackexchange.com/questions/237397/continuous-conversion-vs-single-conversion-mode
-	data[0] = 0b00000000
-	err = d.bus.WriteRegister(d.MagAddress, CTRL_REG3_M, data)
-	if err != nil {
-		return
-	}
-
-	// High-performance mode Z axis
-	data[0] = 0b00001000
-	err = d.bus.WriteRegister(d.MagAddress, CTRL_REG4_M, data)
-	if err != nil {
-		return
-	}
-
-	return nil
-}
@@ -1,9 +0,0 @@
-//go:build !nano_33_ble
-// +build !nano_33_ble
-
-package lsm9ds1
-
-// Configure sets up the device for communication.
-func (d *Device) Configure(cfg Configuration) error {
-	return d.doConfigure(cfg)
-}
@@ -1,25 +0,0 @@
-//go:build nano_33_ble
-// +build nano_33_ble
-
-// Nano 33 BLE [Sense] has LSM9DS1 unit on-board.
-// This custom Configure function powers unit up
-// and enables I2C, so unit can can be accessed.
-package lsm9ds1
-
-import (
-	"machine"
-	"time"
-)
-
-// Configure sets up the device for communication.
-func (d *Device) Configure(cfg Configuration) error {
-	// Following lines are Nano 33 BLE specific, they have nothing to do with sensor per se
-	machine.LSM_PWR.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.LSM_PWR.High()
-	machine.I2C_PULLUP.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.I2C_PULLUP.High()
-	// Wait a moment
-	time.Sleep(10 * time.Millisecond)
-	// Common initialisation code
-	return d.doConfigure(cfg)
-}
@@ -1,102 +0,0 @@
-package lsm9ds1
-
-// Constants/addresses used for I2C.
-
-const (
-
-	// Constants/addresses used for I2C.
-	ACCEL_ADDRESS = 0x6B
-	MAG_ADDRESS   = 0x1E
-
-	// Table 21. Accelerometer and gyroscope register address map
-	WHO_AM_I     = 0x0F // value 0x68
-	CTRL_REG1_G  = 0x10
-	OUT_X_L_G    = 0x18
-	OUT_X_H_G    = 0x19
-	OUT_Y_L_G    = 0x1A
-	OUT_Y_H_G    = 0x1B
-	OUT_Z_L_G    = 0x1C
-	OUT_Z_H_G    = 0x1D
-	OUT_TEMP_L   = 0x15
-	OUT_TEMP_H   = 0x16
-	CTRL_REG6_XL = 0x20
-	STATUS_REG   = 0x27
-	OUT_X_L_XL   = 0x28
-	OUT_X_H_XL   = 0x29
-	OUT_Y_L_XL   = 0x2A
-	OUT_Y_H_XL   = 0x2B
-	OUT_Z_L_XL   = 0x2C
-	OUT_Z_H_XL   = 0x2D
-
-	// Table 22. Magnetic sensor register address map
-	OFFSET_X_REG_L_M = 0x05
-	OFFSET_X_REG_H_M = 0x06
-	OFFSET_Y_REG_L_M = 0x07
-	OFFSET_Y_REG_H_M = 0x08
-	OFFSET_Z_REG_L_M = 0x09
-	OFFSET_Z_REG_H_M = 0x0A
-	WHO_AM_I_M       = 0x0F // value 0x3D
-	CTRL_REG1_M      = 0x20 // TEMP_COMP OM1 OM0 DO2 DO1 DO0 FAST_ODR ST
-	CTRL_REG2_M      = 0x21 // 0 FS1 FS0 0 REBOOT SOFT_RST 0 0
-	CTRL_REG3_M      = 0x22 // 0 LP 0 0 SIM MD1 MD0
-	CTRL_REG4_M      = 0x23 // 0 0 0 0 OMZ1 OMZ0 BLE 0
-	STATUS_REG_M     = 0x27
-	OUT_X_L_M        = 0x28
-	OUT_X_H_M        = 0x29
-	OUT_Y_L_M        = 0x2A
-	OUT_Y_H_M        = 0x2B
-	OUT_Z_L_M        = 0x2C
-	OUT_Z_H_M        = 0x2D
-
-	// Table 67. CTRL_REG6_XL register description
-	ACCEL_2G  AccelRange = 0b00
-	ACCEL_4G  AccelRange = 0b10
-	ACCEL_8G  AccelRange = 0b11
-	ACCEL_16G AccelRange = 0b01
-
-	// Table 68. ODR register setting (accelerometer only mode)
-	ACCEL_SR_OFF AccelSampleRate = 0b000
-	ACCEL_SR_10  AccelSampleRate = 0b001
-	ACCEL_SR_50  AccelSampleRate = 0b010
-	ACCEL_SR_119 AccelSampleRate = 0b011
-	ACCEL_SR_238 AccelSampleRate = 0b100
-	ACCEL_SR_476 AccelSampleRate = 0b101
-	ACCEL_SR_952 AccelSampleRate = 0b110
-
-	// Table 67. CTRL_REG6_XL register description
-	ACCEL_BW_50  AccelBandwidth = 0b11
-	ACCEL_BW_105 AccelBandwidth = 0b10
-	ACCEL_BW_211 AccelBandwidth = 0b01
-	ACCEL_BW_408 AccelBandwidth = 0b00
-
-	// Table 45. CTRL_REG1_G register description
-	GYRO_250DPS  GyroRange = 0b00
-	GYRO_500DPS  GyroRange = 0b01
-	GYRO_2000DPS GyroRange = 0b11
-
-	// Table 9. Gyroscope operating modes
-	// Table 46. ODR and BW configuration setting (after LPF1)
-	GYRO_SR_OFF GyroSampleRate = 0b000
-	GYRO_SR_15  GyroSampleRate = 0b001
-	GYRO_SR_60  GyroSampleRate = 0b010
-	GYRO_SR_119 GyroSampleRate = 0b011
-	GYRO_SR_238 GyroSampleRate = 0b100
-	GYRO_SR_476 GyroSampleRate = 0b101
-	GYRO_SR_952 GyroSampleRate = 0b110
-
-	// Table 114. Full-scale selection
-	MAG_4G  MagRange = 0b00
-	MAG_8G  MagRange = 0b01
-	MAG_12G MagRange = 0b10
-	MAG_16G MagRange = 0b11
-
-	// Table 111. Output data rate configuration
-	MAG_SR_06 MagSampleRate = 0b000
-	MAG_SR_1  MagSampleRate = 0b001
-	MAG_SR_2  MagSampleRate = 0b010
-	MAG_SR_5  MagSampleRate = 0b011
-	MAG_SR_10 MagSampleRate = 0b100
-	MAG_SR_20 MagSampleRate = 0b101
-	MAG_SR_40 MagSampleRate = 0b110
-	MAG_SR_80 MagSampleRate = 0b111
-)
@@ -49,8 +49,8 @@ func (d Device) ReadMagnetic() (x int16, y int16, z int16) {

 // ReadTemperature reads and returns the current die temperature in
 // celsius milli degrees (°C/1000).
-func (d Device) ReadTemperature() (int32, error) {
+func (d Device) ReadTemperature() (drivers.Temperature, error) {
 	data := make([]byte, 1)
 	d.bus.ReadRegister(uint8(d.Address), DIE_TEMP, data)
-	return int32(data[0]) * 1000, nil
+	return drivers.Temperature(data[0]) * 1000, nil
 }
@@ -83,7 +83,7 @@ func (p ADCPin) Get() uint16 {
 	p.d.bus.Tx(p.d.tx, p.d.rx)

 	// scale result to 16bit value like other ADCs
-	result := uint16((p.d.rx[1]&0x3))<<(8+6) + uint16(p.d.rx[2])<<6
+	result := uint16((p.d.rx[1]&0x3))<<8 + uint16(p.d.rx[2])<<6
 	p.d.cs.High()

 	return result
@@ -186,7 +186,7 @@ func (c *TCPSerialConn) LocalAddr() Addr {

 // RemoteAddr returns the remote network address.
 func (c *TCPSerialConn) RemoteAddr() Addr {
-	return c.raddr.opAddr()
+	return c.laddr.opAddr()
 }

 func (c *TCPSerialConn) opConn() Conn {
@@ -2,7 +2,7 @@
 // series by Sensirion.
 //
 // Datasheet:
-// https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Datasheets/Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf
+// https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/0_Datasheets/Humidity/Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf
 //
 package sht3x // import "tinygo.org/x/drivers/sht3x"

@@ -31,9 +31,9 @@ func New(bus drivers.I2C) Device {
 }

 // Read returns the temperature in celsius milli degrees (°C/1000).
-func (d *Device) ReadTemperature() (tempMilliCelsius int32, err error) {
+func (d *Device) ReadTemperature() (tempMilliCelsius drivers.Temperature, err error) {
 	tempMilliCelsius, _, err = d.ReadTemperatureHumidity()
-	return tempMilliCelsius, err
+	return drivers.Temperature(tempMilliCelsius), err
 }

 // Read returns the relative humidity in hundredths of a percent.
@@ -43,15 +43,15 @@ func (d *Device) ReadHumidity() (relativeHumidity int16, err error) {
 }

 // Read returns both the temperature and relative humidity.
-func (d *Device) ReadTemperatureHumidity() (tempMilliCelsius int32, relativeHumidity int16, err error) {
+func (d *Device) ReadTemperatureHumidity() (tempMilliCelsius drivers.Temperature, relativeHumidity int16, err error) {
 	var rawTemp, rawHum, errx = d.rawReadings()
 	if errx != nil {
 		err = errx
 		return
 	}
-	tempMilliCelsius = (35000 * int32(rawTemp) / 13107) - 45000
+	tempMilliCelsius = drivers.Temperature((35000 * int32(rawTemp) / 13107) - 45000)
 	relativeHumidity = int16(2000 * int32(rawHum) / 13107)
-	return tempMilliCelsius, relativeHumidity, err
+	return
 }

 // rawReadings returns the sensor's raw values of the temperature and humidity
@@ -29,6 +29,8 @@ package thermistor // import "tinygo.org/x/drivers/thermistor"
 import (
 	"machine"
 	"math"
+
+	"tinygo.org/x/drivers"
 )

 // Device holds the ADC pin and the needed settings for calculating the
@@ -61,7 +63,7 @@ func (d *Device) Configure() {
 }

 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
-func (d *Device) ReadTemperature() (temperature int32, err error) {
+func (d *Device) ReadTemperature() (temperature drivers.Temperature, err error) {
 	var reading uint32
 	if d.HighSide {
 		// Thermistor connected from analog input to high logic level.
@@ -82,5 +84,5 @@ func (d *Device) ReadTemperature() (temperature int32, err error) {
 	steinhart = 1.0 / steinhart                                 // Invert
 	steinhart -= 273.15                                         // convert to C

-	return int32(steinhart * 1000), nil
+	return drivers.Temperature(steinhart * 1000), nil
 }
@@ -46,7 +46,7 @@ func (d *Device) Connected() bool {
 }

 // Reads the temperature from the sensor and returns it in celsius milli degrees (°C/1000).
-func (d *Device) ReadTemperature() (temperature int32, err error) {
+func (d *Device) ReadTemperature() (temperature drivers.Temperature, err error) {

 	tmpData := make([]byte, 2)

@@ -62,7 +62,7 @@ func (d *Device) ReadTemperature() (temperature int32, err error) {
 		temperatureSum |= int32(0xf800)
 	}

-	temperature = temperatureSum * 625
+	temperature = drivers.Temperature(temperatureSum * 625 / 10)

-	return temperature / 10, nil
+	return temperature, nil
 }
@@ -0,0 +1,17 @@
+package drivers
+
+// This file contains some common units that can be used in a sensor driver.
+
+// Temperature is a temperature in Celsius milli degrees (°C/1000). For example,
+// the value 25000 is 25°C.
+type Temperature int32
+
+// Celsius returns the temperature in degrees Celsius.
+func (t Temperature) Celsius() float32 {
+	return float32(t) / 1000
+}
+
+// Fahrenheit returns the temperature in degrees Fahrenheit.
+func (t Temperature) Fahrenheit() float32 {
+	return t.Celsius()*1.8 + 32
+}
@@ -0,0 +1,26 @@
+package drivers
+
+import "testing"
+
+func TestTemperature(t *testing.T) {
+	tests := []struct {
+		t Temperature
+		c float32 // Celsius
+		f float32 // Fahrenheit
+	}{
+		{-40000, -40, -40}, // -40°C
+		{0, 0, 32},         // 0°C
+		{20000, 20, 68},    // 20°C
+		{25000, 25, 77},    // 25°C
+	}
+	for _, tc := range tests {
+		c := tc.t.Celsius()
+		f := tc.t.Fahrenheit()
+		if c != tc.c {
+			t.Errorf("expected value %d to be %f°C, but got %f°C", tc.t, tc.c, c)
+		}
+		if f != tc.f {
+			t.Errorf("expected value %d to be %f°F, but got %f°F", tc.t, tc.f, f)
+		}
+	}
+}
@@ -2,4 +2,4 @@ package drivers

 // Version returns a user-readable string showing the version of the drivers package for support purposes.
 // Update this value before release of new version of software.
-const Version = "0.18.0"
+const Version = "0.17.1"
@@ -1,65 +0,0 @@
-package wifinina
-
-import "errors"
-
-// Mimics machine package's pin control
-//
-// NB! These are NINA chip pins, not main unit pins.
-//
-// Digital pin values and modes taken from
-// https://github.com/arduino/nina-fw/blob/master/arduino/cores/esp32/wiring_digital.h
-
-type Pin uint8
-
-const (
-	PinLow uint8 = iota
-	PinHigh
-)
-
-type PinMode uint8
-
-const (
-	PinInput PinMode = iota
-	PinOutput
-	PinInputPullup
-)
-
-type PinConfig struct {
-	Mode PinMode
-}
-
-var (
-	ErrPinNoDevice = errors.New("wifinina pin: device not set")
-)
-
-var pinDevice *Device
-
-func pinUseDevice(d *Device) {
-	pinDevice = d
-}
-
-func (p Pin) Configure(config PinConfig) error {
-	if pinDevice == nil {
-		return ErrPinNoDevice
-	}
-	return pinDevice.PinMode(uint8(p), uint8(config.Mode))
-}
-
-func (p Pin) Set(high bool) error {
-	if pinDevice == nil {
-		return ErrPinNoDevice
-	}
-	value := PinLow
-	if high {
-		value = PinHigh
-	}
-	return pinDevice.DigitalWrite(uint8(p), value)
-}
-
-func (p Pin) High() error {
-	return p.Set(true)
-}
-
-func (p Pin) Low() error {
-	return p.Set(false)
-}
@@ -297,7 +297,6 @@ func New(bus drivers.SPI, csPin, ackPin, gpio0Pin, resetPin machine.Pin) *Device
 func (d *Device) Configure() {

 	net.UseDriver(d.NewDriver())
-	pinUseDevice(d)

 	d.CS.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	d.ACK.Configure(machine.PinConfig{Mode: machine.PinInput})
@@ -690,23 +689,6 @@ func (d *Device) StartScanNetworks() (uint8, error) {
 	return d.getUint8(d.req0(CmdStartScanNetworks))
 }

-func (d *Device) PinMode(pin uint8, mode uint8) error {
-	_, err := d.req2Uint8(CmdSetPinMode, pin, mode)
-	return err
-}
-
-func (d *Device) DigitalWrite(pin uint8, value uint8) error {
-	_, err := d.req2Uint8(CmdSetDigitalWrite, pin, value)
-	return err
-}
-
-func (d *Device) AnalogWrite(pin uint8, value uint8) error {
-	_, err := d.req2Uint8(CmdSetAnalogWrite, pin, value)
-	return err
-}
-
-// ------------- End of public device interface ----------------------------
-
 func (d *Device) getString(l uint8, err error) (string, error) {
 	if err != nil {
 		return "", err
@@ -791,14 +773,6 @@ func (d *Device) reqUint8(cmd uint8, data uint8) (l uint8, err error) {
 	return d.waitRspCmd1(cmd)
 }

-// req2Uint8 sends a command to the device with two uint8 parameters
-func (d *Device) req2Uint8(cmd, p1, p2 uint8) (l uint8, err error) {
-	if err := d.sendCmdPadded2(cmd, p1, p2); err != nil {
-		return 0, err
-	}
-	return d.waitRspCmd1(cmd)
-}
-
 // reqStr sends a command to the device with a single string parameter
 func (d *Device) reqStr(cmd uint8, p1 string) (uint8, error) {
 	if err := d.sendCmdStr(cmd, p1); err != nil {
@@ -860,18 +834,6 @@ func (d *Device) sendCmdPadded1(cmd uint8, data uint8) error {
 	return nil
 }

-func (d *Device) sendCmdPadded2(cmd, data1, data2 uint8) error {
-	defer d.spiChipDeselect()
-	if err := d.waitForChipSelect(); err != nil {
-		return err
-	}
-	l := d.sendCmd(cmd, 1)
-	l += d.sendParam8(data1, false)
-	l += d.sendParam8(data2, true)
-	d.SPI.Transfer(dummyData)
-	return nil
-}
-
 func (d *Device) sendCmdStr(cmd uint8, p1 string) (err error) {
 	defer d.spiChipDeselect()
 	if err := d.waitForChipSelect(); err != nil {
@@ -5,11 +5,9 @@ package main

 import (
 	"bytes"
-	"flag"
 	"fmt"
 	"math"
 	"os"
-	"strconv"
 	"strings"
 )

@@ -36,77 +34,10 @@ import (
 // The timings deviate a little bit from the code here, but so far the timings
 // from wp.josh.com seem to be fine for the ws2812.

-// Architecture implementation. Describes the template and the timings of the
-// blocks of instructions so that most code can remain architecture-independent.
-type architectureImpl struct {
-	buildTag         string
-	minBaseCyclesT0H int
-	maxBaseCyclesT0H int
-	minBaseCyclesT1H int
-	maxBaseCyclesT1H int
-	minBaseCyclesTLD int
-	valueTemplate    string // template for how to pass the 'c' byte to assembly
-	template         string // assembly template
-}
+// Clock frequencies to support, in MHz.
+var clockFrequencies = []int{16, 48, 64, 120, 168}

-var architectures = map[string]architectureImpl{
-	"cortexm": {
-		// Assume that a branch is 1 to 3 cycles, no matter whether it's taken
-		// or not. This is a rather conservative estimate, for Cortex-M+ for
-		// example the instruction cycles are precisely known.
-		buildTag:         "cortexm",
-		minBaseCyclesT0H: 1 + 1 + 2, // shift + branch (not taken) + store
-		maxBaseCyclesT0H: 1 + 3 + 2, // shift + branch (not taken) + store
-		minBaseCyclesT1H: 1 + 1 + 2, // shift + branch (taken) + store
-		maxBaseCyclesT1H: 1 + 3 + 2, // shift + branch (taken) + store
-		minBaseCyclesTLD: 1 + 1 + 2, // subtraction + branch + store (in next cycle)
-		valueTemplate:    "uint32(c) << 24",
-		template: `
-1: @ send_bit
-  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
-  @DELAY1
-  lsls  {value}, #1              @ [1]
-  bcs.n 2f                       @ [1/3] skip_store
-  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition
-2: @ skip_store
-  @DELAY2
-  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition
-  @DELAY3
-  subs  {i}, #1                  @ [1]
-  bne.n 1b                       @ [1/3] send_bit
-`,
-	},
-	"tinygoriscv": {
-		// Largely based on the SiFive FE310 CPU:
-		// - stores are 1 cycle
-		// - branches are 1 or 3 cycles, depending on branch prediction
-		// - ALU operations are 1 cycle (as on most CPUs)
-		// Hopefully this generalizes to other chips.
-		buildTag:         "tinygo.riscv32",
-		minBaseCyclesT0H: 1 + 1 + 1, // shift + branch (not taken) + store
-		maxBaseCyclesT0H: 1 + 3 + 1, // shift + branch (not taken) + store
-		minBaseCyclesT1H: 1 + 1 + 1, // shift + branch (taken) + store
-		maxBaseCyclesT1H: 1 + 3 + 1, // shift + branch (taken) + store
-		minBaseCyclesTLD: 1 + 1 + 1, // subtraction + branch + store (in next cycle)
-		valueTemplate:    "uint32(c) << 23",
-		template: `
-1: // send_bit
-  sw    {maskSet}, {portSet}     // [1]   T0H and T0L start here
-  @DELAY1
-  slli  {value}, {value}, 1      // [1]   shift value left by 1
-  bltz  {value}, 2f              // [1/3] skip_store
-  sw    {maskClear}, {portClear} // [1]   T0H -> T0L transition
-2: // skip_store
-  @DELAY2
-  sw    {maskClear}, {portClear} // [1]   T1H -> T1L transition
-  @DELAY3
-  addi  {i}, {i}, -1             // [1]
-  bnez  {i}, 1b                  // [1/3] send_bit
-`,
-	},
-}
-
-func writeImplementation(f *os.File, arch string, megahertz int) error {
+func writeImplementation(f *os.File, megahertz int) error {
 	cycleTimeNS := 1 / float64(megahertz)
 	// These timings are taken from the table "Updated simplified timing
 	// constraints for NeoPixel strings" at:
@@ -141,7 +72,7 @@ func writeImplementation(f *os.File, arch string, megahertz int) error {
 	maxCyclesT1H := int(math.Floor(5.500 / cycleTimeNS))
 	minCyclesTLD := int(math.Ceil(1.150 / cycleTimeNS))

-	// The assembly template looks something like this:
+	// Assembly template:
 	// 1: @ send_bit
 	//   str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
 	//   ...delay 1
@@ -156,31 +87,29 @@ func writeImplementation(f *os.File, arch string, megahertz int) error {
 	//   bne.n 1b                       @ [1/3] send_bit
 	//
 	// We need to calculate the number of nop instructions in the three delays.
-	archImpl, ok := architectures[arch]
-	if !ok {
-		return fmt.Errorf("unknown architecture: %s", arch)
-	}

 	// Determine number of nops for delay1. This is primarily based on the T0H
 	// delay, which is relatively short (<500ns).
-	delay1 := minCyclesT0H - archImpl.minBaseCyclesT0H
+	minBaseCyclesT0H := 1 + 1 + 2 // shift + branch + store
+	maxBaseCyclesT0H := 1 + 3 + 2 // shift + branch + store
+	delay1 := minCyclesT0H - minBaseCyclesT0H
 	if delay1 < 0 {
 		// The minCyclesT0H constraint could not be satisfied. Don't insert
 		// nops, in the hope that it isn't too long.
 		delay1 = 0
 	}
-	if delay1+archImpl.maxBaseCyclesT0H > maxCyclesT0H {
+	if delay1+maxBaseCyclesT0H > maxCyclesT0H {
 		return fmt.Errorf("MCU appears to be too slow to satisfy minimum requirements for the T0H signal")
 	}
-	actualMinCyclesT0H := archImpl.minBaseCyclesT0H + delay1
-	actualMaxCyclesT0H := archImpl.maxBaseCyclesT0H + delay1
+	actualMinCyclesT0H := minBaseCyclesT0H + delay1
+	actualMaxCyclesT0H := maxBaseCyclesT0H + delay1
 	actualMinNanosecondsT0H := float64(actualMinCyclesT0H) / float64(megahertz) * 1000
 	actualMaxNanosecondsT0H := float64(actualMaxCyclesT0H) / float64(megahertz) * 1000

 	// Determine number of nops for delay2. This is delay1 plus some extra time
 	// so that the pulse is long enough for T1H.
-	minBaseCyclesT1H := delay1 + archImpl.minBaseCyclesT1H // delay1 + asssembly cycles
-	maxBaseCyclesT1H := delay1 + archImpl.maxBaseCyclesT1H // delay1 + asssembly cycles
+	minBaseCyclesT1H := delay1 + 1 + 1 + 2 // delay1 + shift + branch + store
+	maxBaseCyclesT1H := delay1 + 1 + 3 + 2 // delay1 + shift + branch + store
 	delay2 := minCyclesT1H - minBaseCyclesT1H
 	if delay2 < 0 {
 		delay2 = 0
@@ -196,11 +125,12 @@ func writeImplementation(f *os.File, arch string, megahertz int) error {

 	// Determine number of nops for delay3. This is based on the TLD delay, the
 	// time between two high pulses.
-	delay3 := minCyclesTLD - archImpl.minBaseCyclesTLD
+	minBaseCyclesTLD := 1 + 1 + 2 // subtraction + branch + store (in next cycle)
+	delay3 := minCyclesTLD - minBaseCyclesTLD
 	if delay3 < 0 {
 		delay3 = 0
 	}
-	actualMinCyclesTLD := archImpl.minBaseCyclesTLD + delay3
+	actualMinCyclesTLD := minBaseCyclesTLD + delay3
 	actualMinNanosecondsTLD := float64(actualMinCyclesTLD) / float64(megahertz) * 1000

 	// Create the Go function in a buffer. Using a buffer here to be able to
@@ -216,13 +146,21 @@ func writeImplementation(f *os.File, arch string, megahertz int) error {
 	fmt.Fprintf(buf, "	// T1H: %2d - %2d cycles or %.1fns - %.1fns\n", actualMinCyclesT1H, actualMaxCyclesT1H, actualMinNanosecondsT1H, actualMaxNanosecondsT1H)
 	fmt.Fprintf(buf, "	// TLD: %2d -    cycles or %.1fns -\n", actualMinCyclesTLD, actualMinNanosecondsTLD)
 	fmt.Fprintf(buf, "	mask := interrupt.Disable()\n")
-	fmt.Fprintf(buf, "	value := %s\n", archImpl.valueTemplate)
-	asm := archImpl.template
-	asm = strings.ReplaceAll(asm, "  @DELAY1\n", strings.Repeat("  nop\n", delay1))
-	asm = strings.ReplaceAll(asm, "  @DELAY2\n", strings.Repeat("  nop\n", delay2))
-	asm = strings.ReplaceAll(asm, "  @DELAY3\n", strings.Repeat("  nop\n", delay3))
-	asm = strings.ReplaceAll(asm, "\n", "\n\t")
-	fmt.Fprintf(buf, "	device.AsmFull(`%s`, map[string]interface{}{", asm)
+	fmt.Fprintf(buf, "	value := uint32(c) << 24\n")
+	fmt.Fprintf(buf, "	device.AsmFull(`\n")
+	fmt.Fprintf(buf, "	1: @ send_bit\n")
+	fmt.Fprintf(buf, "	  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here\n")
+	buf.WriteString(strings.Repeat("	  nop\n", delay1))
+	fmt.Fprintf(buf, "	  lsls  {value}, #1              @ [1]\n")
+	fmt.Fprintf(buf, "	  bcs.n 2f                       @ [1/3] skip_store\n")
+	fmt.Fprintf(buf, "	  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition\n")
+	fmt.Fprintf(buf, "	2: @ skip_store\n")
+	buf.WriteString(strings.Repeat("	  nop\n", delay2))
+	fmt.Fprintf(buf, "	  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition\n")
+	buf.WriteString(strings.Repeat("	  nop\n", delay3))
+	fmt.Fprintf(buf, "	  subs  {i}, #1                  @ [1]\n")
+	fmt.Fprintf(buf, "	  bne.n 1b                       @ [1/3] send_bit\n")
+	fmt.Fprintf(buf, "	`, map[string]interface{}{")
 	buf.WriteString(`
 		"value":     value,
 		"i":         8,
@@ -241,33 +179,19 @@ func writeImplementation(f *os.File, arch string, megahertz int) error {
 }

 func main() {
-	arch := flag.String("arch", "cortexm", "architecture to output to")
-	flag.Parse()
-
-	// Remaining parameters are all clock frequencies.
-	var clockFrequencies []int
-	for _, s := range flag.Args() {
-		freq, err := strconv.Atoi(s)
-		if err != nil {
-			fmt.Fprintln(os.Stderr, "cannot parse frequency:", s)
-			os.Exit(1)
-		}
-		clockFrequencies = append(clockFrequencies, freq)
-	}
-
-	f, err := os.Create("ws2812-asm_" + *arch + ".go")
+	f, err := os.Create("ws2812-asm_cortexm.go")
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "could not generate WS2812 assembly code:", err)
 		os.Exit(1)
 	}
 	defer f.Close()
-	fmt.Fprintln(f, "//go:build", architectures[*arch].buildTag)
-	fmt.Fprintln(f, "// +build", architectures[*arch].buildTag)
-	f.WriteString(`
+	f.WriteString(`//go:build cortexm
+// +build cortexm
+
 package ws2812

 // Warning: autogenerated file. Instead of modifying this file, change
-// gen-ws2812.go and run "go generate".
+// gen-ws2812-arm.go and run "go generate".

 import (
 	"device"
@@ -275,9 +199,9 @@ import (
 )
 `)
 	for _, megahertz := range clockFrequencies {
-		err := writeImplementation(f, *arch, megahertz)
+		err := writeImplementation(f, megahertz)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "could not generate WS2812 assembly code for %s and %dMHz: %s\n", *arch, megahertz, err)
+			fmt.Fprintf(os.Stderr, "could not generate WS2812 assembly code for %dMHz: %s\n", megahertz, err)
 			os.Exit(1)
 		}
 	}
@@ -4,7 +4,7 @@
 package ws2812

 // Warning: autogenerated file. Instead of modifying this file, change
-// gen-ws2812.go and run "go generate".
+// gen-ws2812-arm.go and run "go generate".

 import (
 	"device"
@@ -1,8 +1,7 @@
 // Package ws2812 implements a driver for WS2812 and SK6812 RGB LED strips.
 package ws2812 // import "tinygo.org/x/drivers/ws2812"

-//go:generate go run gen-ws2812.go -arch=cortexm 16 48 64 120 168
-//go:generate go run gen-ws2812.go -arch=tinygoriscv 160 320
+//go:generate go run gen-ws2812-arm.go

 import (
 	"errors"
@@ -1,20 +0,0 @@
-//go:build tinygo.riscv32
-// +build tinygo.riscv32
-
-package ws2812
-
-import "machine"
-
-// Send a single byte using the WS2812 protocol.
-func (d Device) WriteByte(c byte) error {
-	switch machine.CPUFrequency() {
-	case 160_000_000: // 160MHz, e.g. esp32c3
-		d.writeByte160(c)
-		return nil
-	case 320_000_000: // 320MHz, e.g. fe310
-		d.writeByte320(c)
-		return nil
-	default:
-		return errUnknownClockSpeed
-	}
-}