net/http: add length check

Signed-off-by: deadprogram <ron@hybridgroup.com>

CHANGELOG.md

@@ -1,3 +1,34 @@
+0.23.0
+---
+- **new devices**
+    - Add GC9A01 Driver (#452)
+    - Initial support for VL6180x sensor
+
+- **enhancements**
+    - **rtl8720dn**
+        - refactor by bringing this driver more in line with wifinina and espat
+    - **ssd1306**
+        - add getter method to the current buffer
+    - **makeybutton**
+        - revise to better match the algorithm defined by the original
+    - **espat,wifinina,rtl8720dn**
+        - change ssid/pass from const to var
+
+- **bugfixes**
+    - **microbitmatrix**
+        - fix inverted axis
+    - **espat**
+        - Trim quotes from IP returned by espat's GetDNS()
+    - **all**
+        - correct go fmt
+
+- **examples**
+    - **rtl8720dn**
+        - remove wifi setting
+        - add call to optional debug setting
+        - update all remaining examples for refactored API
+
+
 0.22.0
 ---
 - **new devices**

Makefile

@@ -53,6 +53,8 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/flash/console/qspi
 	@md5sum ./build/test.hex
+	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/gc9a01/main.go
+	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/i2c/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/uart/main.go
@@ -101,6 +103,8 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/microbitmatrix/main.go
 	@md5sum ./build/test.hex
+	tinygo build -size short -o ./build/test.hex -target=microbit-v2 ./examples/microbitmatrix/main.go
+	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mma8653/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mpu6050/main.go
@@ -143,6 +147,8 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl53l1x/main.go
 	@md5sum ./build/test.hex
+	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl6180x/main.go
+	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13x/main.go
@@ -205,6 +211,8 @@ endif
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/timer/
 	@md5sum ./build/test.hex
+	tinygo build -size short -o ./build/test.hex -target=pico ./examples/qmi8658c/main.go
+	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/ina260/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=nucleo-l432kc ./examples/aht20/main.go

README.md

@@ -52,7 +52,7 @@ func main() {
 
 ## Currently supported devices
 
-The following 82 devices are supported.
+The following 90 devices are supported.
 
 | Device Name                                                                                                                                                                                         | Interface Type |
 |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|
@@ -97,10 +97,10 @@ The following 82 devices are supported.
 | [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 |
-| [LSM6DS3TR accelerometer](https://www.st.com/resource/en/datasheet/lsm6ds3tr.pdf)                                                                                                                     | I2C |
+| [LSM6DS3TR accelerometer](https://www.st.com/resource/en/datasheet/lsm6ds3tr.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 |
-| [Makey Button](https://makeymakey.com/)                                                                                                                   | GPIO |
+| [Makey Button](https://makeymakey.com/)                                                                                                                                                             | GPIO |
 | [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 |
@@ -112,9 +112,10 @@ The following 82 devices are supported.
 | [P1AM-100 Base Controller](https://facts-engineering.github.io/modules/P1AM-100/P1AM-100.html)                                                                                                      | SPI |
 | [PCD8544 display](http://eia.udg.edu/~forest/PCD8544_1.pdf)                                                                                                                                         | SPI |
 | [PCF8563 real time clock](https://www.nxp.com/docs/en/data-sheet/PCF8563.pdf)                                                                                                                       | I2C |
+| [QMI8658C accelerometer/gyroscope](https://www.qstcorp.com/upload/pdf/202202/%EF%BC%88%E5%B7%B2%E4%BC%A0%EF%BC%89QMI8658C%20datasheet%20rev%200.9.pdf)                                              | I2C |
 | [Resistive Touchscreen (4-wire)](http://ww1.microchip.com/downloads/en/Appnotes/doc8091.pdf)                                                                                                        | GPIO |
 | [RTL8720DN 2.4G/5G Dual Bands Wireless and BLE5.0](https://www.seeedstudio.com/Realtek8720DN-2-4G-5G-Dual-Bands-Wireless-and-BLE5-0-Combo-Module-p-4442.html)                                       | UART |
-| [SCD4x CO2 Sensor](https://sensirion.com/media/documents/C4B87CE6/627C2DCD/CD_DS_SCD40_SCD41_Datasheet_D1.pdf) | I2C |
+| [SCD4x CO2 Sensor](https://sensirion.com/media/documents/C4B87CE6/627C2DCD/CD_DS_SCD40_SCD41_Datasheet_D1.pdf)                                                                                      | I2C |
 | [Semihosting](https://wiki.segger.com/Semihosting)                                                                                                                                                  | Debug |
 | [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 |
@@ -132,16 +133,18 @@ The following 82 devices are supported.
 | [Thermistor](https://www.farnell.com/datasheets/33552.pdf)                                                                                                                                          | ADC |
 | [TM1637 7-segment LED display](https://www.mcielectronics.cl/website_MCI/static/documents/Datasheet_TM1637.pdf)                                                                                     | I2C |
 | [TMP102 I2C Temperature Sensor](https://download.mikroe.com/documents/datasheets/tmp102-data-sheet.pdf)                                                                                             | I2C |
-| [UC8151 All-in-one driver IC for ESL](https://www.buydisplay.com/download/ic/UC8151C.pdf)                                                                                          | I2C |
+| [UC8151 All-in-one driver IC for ESL](https://www.buydisplay.com/download/ic/UC8151C.pdf)                                                                                                           | I2C |
 | [VEML6070 UV light sensor](https://www.vishay.com/docs/84277/veml6070.pdf)                                                                                                                          | I2C |
 | [VL53L1X time-of-flight distance sensor](https://www.st.com/resource/en/datasheet/vl53l1x.pdf)                                                                                                      | I2C |
+| [VL6180X time-of-flight distance sensor](https://www.st.com/resource/en/datasheet/vl6180x.pdf)                                                                                                      | I2C |
 | [Waveshare 2.13" (B & C) e-paper display](https://www.waveshare.com/w/upload/d/d3/2.13inch-e-paper-b-Specification.pdf)                                                                             | SPI |
 | [Waveshare 2.13" e-paper display](https://www.waveshare.com/w/upload/e/e6/2.13inch_e-Paper_Datasheet.pdf)                                                                                           | SPI |
-| [Waveshare 2.9" e-paper display (V1)](https://www.waveshare.com/w/upload/e/e6/2.9inch_e-Paper_Datasheet.pdf)                                                                                           | SPI |
+| [Waveshare 2.9" e-paper display (V1)](https://www.waveshare.com/w/upload/e/e6/2.9inch_e-Paper_Datasheet.pdf)                                                                                        | SPI |
 | [Waveshare 4.2" e-paper B/W display](https://www.waveshare.com/w/upload/6/6a/4.2inch-e-paper-specification.pdf)                                                                                     | SPI |
+| [Waveshare GC9A01 TFT round display](https://www.waveshare.com/w/upload/5/5e/GC9A01A.pdf)                                                                                                           | SPI |
 | [WS2812 RGB LED](https://cdn-shop.adafruit.com/datasheets/WS2812.pdf)                                                                                                                               | GPIO |
 | [XPT2046 touch controller](http://grobotronics.com/images/datasheets/xpt2046-datasheet.pdf)                                                                                                         | GPIO |
-| [Semtech SX126x Lora](https://www.semtech.com/products/wireless-rf/lora-transceiv-ers/sx1261)                                                                                                       | SPI |
+| [Semtech SX126x Lora](https://www.semtech.com/products/wireless-rf/lora-connect/sx1261)                                                                                                             | SPI |
 | [SSD1289 TFT color display](http://aitendo3.sakura.ne.jp/aitendo_data/product_img/lcd/tft2/M032C1289TP/3.2-SSD1289.pdf)                                                                             | GPIO |
 
 ## Contributing

adt7410/adt7410.go

@@ -1,7 +1,6 @@
 // Package adt7410 provides a driver for the adt7410 I2C Temperature Sensor.
 //
 // Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADT7410.pdf
-//
 package adt7410 // import "tinygo.org/x/drivers/adt7410"
 
 import (

adxl345/adxl345.go

@@ -3,7 +3,6 @@
 // Datasheet EN: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
 //
 // Datasheet JP: http://www.analog.com/media/jp/technical-documentation/data-sheets/ADXL345_jp.pdf
-//
 package adxl345 // import "tinygo.org/x/drivers/adxl345"
 
 import "tinygo.org/x/drivers"

apds9960/apds9960.go

@@ -2,7 +2,6 @@
 // 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 (

apds9960/apds9960_generic.go

@@ -1,10 +1,7 @@
 //go:build !nano_33_ble
-// +build !nano_33_ble
 
 package apds9960
 
-import "tinygo.org/x/drivers"
-
 // Configure sets up the APDS-9960 device.
 func (d *Device) Configure(cfg Configuration) {
 	// configure device

apds9960/apds9960_nano_33_ble.go

@@ -1,5 +1,4 @@
 //go:build nano_33_ble
-// +build nano_33_ble
 
 package apds9960
 

axp192/axp192.go

@@ -3,7 +3,6 @@
 //
 // 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 (

bh1750/bh1750.go

@@ -2,7 +2,6 @@
 //
 // Datasheet:
 // https://www.mouser.com/ds/2/348/bh1750fvi-e-186247.pdf
-//
 package bh1750 // import "tinygo.org/x/drivers/bh1750"
 
 import (

blinkm/blinkm.go

@@ -1,7 +1,6 @@
 // Package blinkm implements a driver for the BlinkM I2C RGB LED.
 //
 // Datasheet: http://thingm.com/fileadmin/thingm/downloads/BlinkM_datasheet.pdf
-//
 package blinkm // import "tinygo.org/x/drivers/blinkm"
 
 import "tinygo.org/x/drivers"

bme280/bme280.go

@@ -3,11 +3,11 @@
 //
 // Datasheet:
 // https://cdn-shop.adafruit.com/datasheets/BST-BME280_DS001-10.pdf
-//
 package bme280
 
 import (
 	"math"
+	"time"
 
 	"tinygo.org/x/drivers"
 )
@@ -34,11 +34,27 @@ type calibrationCoefficients struct {
 	h6 int8
 }
 
+type Oversampling byte
+type Mode byte
+type FilterCoefficient byte
+type Period byte
+
+// Config contains settings for filtering, sampling, and modes of operation
+type Config struct {
+	Pressure    Oversampling
+	Temperature Oversampling
+	Humidity    Oversampling
+	Period      Period
+	Mode        Mode
+	IIR         FilterCoefficient
+}
+
 // Device wraps an I2C connection to a BME280 device.
 type Device struct {
 	bus                     drivers.I2C
 	Address                 uint16
 	calibrationCoefficients calibrationCoefficients
+	Config                  Config
 }
 
 // New creates a new BME280 connection. The I2C bus must already be
@@ -52,9 +68,34 @@ func New(bus drivers.I2C) Device {
 	}
 }
 
-// Configure sets up the device for communication and
-// read the calibration coefficientes.
+// ConfigureWithSettings sets up the device for communication and
+// read the calibration coefficients.
+//
+// The default configuration is the Indoor Navigation settings
+// from the BME280 datasheet.
 func (d *Device) Configure() {
+	d.ConfigureWithSettings(Config{})
+}
+
+// ConfigureWithSettings sets up the device for communication and
+// read the calibration coefficients.
+//
+// The default configuration if config is left at defaults is
+// the Indoor Navigation settings from the BME280 datasheet.
+func (d *Device) ConfigureWithSettings(config Config) {
+	d.Config = config
+
+	// If config is not initialized, use Indoor Navigation defaults.
+	if d.Config == (Config{}) {
+		d.Config = Config{
+			Mode:        ModeNormal,
+			Period:      Period0_5ms,
+			Temperature: Sampling2X,
+			Humidity:    Sampling1X,
+			Pressure:    Sampling16X,
+			IIR:         Coeff16,
+		}
+	}
 
 	var data [24]byte
 	err := d.bus.ReadRegister(uint8(d.Address), REG_CALIBRATION, data[:])
@@ -94,10 +135,18 @@ func (d *Device) Configure() {
 	d.calibrationCoefficients.h4 = 0 + (int16(h2lsb[3]) << 4) | (int16(h2lsb[4] & 0x0F))
 	d.calibrationCoefficients.h5 = 0 + (int16(h2lsb[5]) << 4) | (int16(h2lsb[4]) >> 4)
 
-	d.bus.WriteRegister(uint8(d.Address), CTRL_HUMIDITY_ADDR, []byte{0x3f})
-	d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{0xB7})
-	d.bus.WriteRegister(uint8(d.Address), CTRL_CONFIG, []byte{0x00})
+	d.Reset()
 
+	d.bus.WriteRegister(uint8(d.Address), CTRL_CONFIG, []byte{byte(d.Config.Period<<5) | byte(d.Config.IIR<<2)})
+	d.bus.WriteRegister(uint8(d.Address), CTRL_HUMIDITY_ADDR, []byte{byte(d.Config.Humidity)})
+
+	// Normal mode, start measuring now
+	if d.Config.Mode == ModeNormal {
+		d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{
+			byte(d.Config.Temperature<<5) |
+				byte(d.Config.Pressure<<2) |
+				byte(d.Config.Mode)})
+	}
 }
 
 // Connected returns whether a BME280 has been found.
@@ -113,6 +162,20 @@ func (d *Device) Reset() {
 	d.bus.WriteRegister(uint8(d.Address), CMD_RESET, []byte{0xB6})
 }
 
+// SetMode can set the device to Sleep, Normal or Forced mode
+//
+// Calling this method is optional, Configure can be used to set the
+// initial mode if no mode change is desired.  This method is most
+// useful to switch between Sleep and Normal modes.
+func (d *Device) SetMode(mode Mode) {
+	d.Config.Mode = mode
+
+	d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{
+		byte(d.Config.Temperature<<5) |
+			byte(d.Config.Pressure<<2) |
+			byte(d.Config.Mode)})
+}
+
 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
 func (d *Device) ReadTemperature() (int32, error) {
 	data, err := d.readData()
@@ -149,7 +212,8 @@ func (d *Device) ReadHumidity() (int32, error) {
 // ReadAltitude returns the current altitude in meters based on the
 // current barometric pressure and estimated pressure at sea level.
 // Calculation is based on code from Adafruit BME280 library
-// 	https://github.com/adafruit/Adafruit_BME280_Library
+//
+//	https://github.com/adafruit/Adafruit_BME280_Library
 func (d *Device) ReadAltitude() (alt int32, err error) {
 	mPa, _ := d.ReadPressure()
 	atmP := float32(mPa) / 100000
@@ -186,6 +250,16 @@ func readIntLE(msb byte, lsb byte) int16 {
 // readData does a burst read from 0xF7 to 0xF0 according to the datasheet
 // resulting in an slice with 8 bytes 0-2 = pressure / 3-5 = temperature / 6-7 = humidity
 func (d *Device) readData() (data [8]byte, err error) {
+	if d.Config.Mode == ModeForced {
+		// Write the CTRL_MEAS register to trigger a measurement
+		d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{
+			byte(d.Config.Temperature<<5) |
+				byte(d.Config.Pressure<<2) |
+				byte(d.Config.Mode)})
+
+		time.Sleep(d.measurementDelay())
+	}
+
 	err = d.bus.ReadRegister(uint8(d.Address), REG_PRESSURE, data[:])
 	if err != nil {
 		println(err)
@@ -256,3 +330,39 @@ func (d *Device) calculateHumidity(data [8]byte, tFine int32) int32 {
 	return int32(100 * h)
 
 }
+
+// measurementDelay returns how much time each measurement will take
+// on the device.
+//
+// This is used in forced mode to wait until a measurement is complete.
+func (d *Device) measurementDelay() time.Duration {
+	const MeasOffset = 1250
+	const MeasDur = 2300
+	const HumMeasOffset = 575
+	const MeasScalingFactor = 1000
+
+	// delay is based on over-sampling rate - this table converts from
+	// setting to number samples
+	sampleRateConv := []int{0, 1, 2, 4, 8, 16}
+
+	tempOsr := 16
+	if d.Config.Temperature <= Sampling16X {
+		tempOsr = sampleRateConv[d.Config.Temperature]
+	}
+
+	presOsr := 16
+	if d.Config.Temperature <= Sampling16X {
+		presOsr = sampleRateConv[d.Config.Pressure]
+	}
+
+	humOsr := 16
+	if d.Config.Temperature <= Sampling16X {
+		humOsr = sampleRateConv[d.Config.Humidity]
+	}
+
+	max_delay := ((MeasOffset + (MeasDur * tempOsr) +
+		((MeasDur * presOsr) + HumMeasOffset) +
+		((MeasDur * humOsr) + HumMeasOffset)) / MeasScalingFactor)
+
+	return time.Duration(max_delay) * time.Millisecond
+}

bme280/registers.go

@@ -20,6 +20,50 @@ const (
 	CHIP_ID  = 0x60
 )
 
+// Increasing sampling rate increases precision but also the wait time for measurements. The datasheet has a table of
+// suggested values for oversampling, output data rates, and iir filter coefficients by use case.
+const (
+	SamplingOff Oversampling = iota
+	Sampling1X
+	Sampling2X
+	Sampling4X
+	Sampling8X
+	Sampling16X
+)
+
+// In normal mode (the default) the sensor takes masurements periodically.  In forced
+// mode, the sensor takes a measurement only when requested.
+//
+// For use-cases with infrequent sampling, forced mode is more power efficient.
+const (
+	ModeNormal Mode = 0x03
+	ModeForced Mode = 0x01
+	ModeSleep  Mode = 0x00
+)
+
+// IIR filter coefficients, higher values means steadier measurements but slower reaction times
+const (
+	Coeff0 FilterCoefficient = iota
+	Coeff2
+	Coeff4
+	Coeff8
+	Coeff16
+)
+
+// Period of standby in normal mode which controls how often measurements are taken
+//
+// Note Period10ms and Period20ms are out of sequence, but are per the datasheet
+const (
+	Period0_5ms  Period = 0b000
+	Period62_5ms        = 0b001
+	Period125ms         = 0b010
+	Period250ms         = 0b011
+	Period500ms         = 0b100
+	Period1000ms        = 0b101
+	Period10ms          = 0b110
+	Period20ms          = 0b111
+)
+
 const (
 	SEALEVEL_PRESSURE float32 = 1013.25 // in hPa
 )

bmp180/bmp180.go

@@ -3,7 +3,6 @@
 //
 // Datasheet:
 // https://cdn-shop.adafruit.com/datasheets/BST-BMP180-DS000-09.pdf
-//
 package bmp180 // import "tinygo.org/x/drivers/bmp180"
 
 import (

buzzer/buzzer.go

@@ -1,5 +1,4 @@
 // Package buzzer provides a very simplistic driver for a connected buzzer or low-fidelity speaker.
-//
 package buzzer // import "tinygo.org/x/drivers/buzzer"
 
 import (
@@ -55,6 +54,12 @@ func (l *Device) Tone(hz, duration float64) (err error) {
 
 	tempo := ((60 / l.BPM) * (duration * 1000))
 
+	// no tone during rest, just let the duration pass.
+	if hz == Rest {
+		time.Sleep(time.Duration(tempo) * time.Millisecond)
+		return
+	}
+
 	for i := 0.0; i < tempo*1000; i += tone * 2.0 {
 		if err = l.On(); err != nil {
 			return

buzzer/notes.go

@@ -1,9 +1,9 @@
 package buzzer
 
 const (
-	Whole   = 4
-	Half    = 2
-	Quarter = 1
+	Whole   = 4.0
+	Half    = 2.0
+	Quarter = 1.0
 	Eighth  = 0.500
 )
 

dht/constants.go

@@ -1,5 +1,4 @@
 //go:build tinygo
-// +build tinygo
 
 // Package dht provides a driver for DHTXX family temperature and humidity sensors.
 //

dht/highfreq.go

@@ -1,5 +1,4 @@
 //go:build mimxrt1062 || stm32f405 || atsamd51 || stm32f103xx || k210 || stm32f407
-// +build mimxrt1062 stm32f405 atsamd51 stm32f103xx k210 stm32f407
 
 package dht // import "tinygo.org/x/drivers/dht"
 

dht/lowfreq.go

@@ -1,5 +1,4 @@
 //go:build !mimxrt1062 && !stm32f405 && !atsamd51 && !stm32f103xx && !k210 && !stm32f407
-// +build !mimxrt1062,!stm32f405,!atsamd51,!stm32f103xx,!k210,!stm32f407
 
 package dht // import "tinygo.org/x/drivers/dht"
 

dht/thermometer.go

@@ -1,5 +1,4 @@
 //go:build tinygo
-// +build tinygo
 
 // Package dht provides a driver for DHTXX family temperature and humidity sensors.
 //
@@ -11,6 +10,7 @@ package dht // import "tinygo.org/x/drivers/dht"
 
 import (
 	"machine"
+	"runtime/interrupt"
 	"time"
 )
 
@@ -160,8 +160,8 @@ func (t *device) read() error {
 // interrupts
 func receiveSignals(pin machine.Pin, result []counter) {
 	i := uint8(0)
-	machine.UART1.Interrupt.Disable()
-	defer machine.UART1.Interrupt.Enable()
+	mask := interrupt.Disable()
+	defer interrupt.Restore(mask)
 	for ; i < 40; i++ {
 		result[i*2] = expectChange(pin, false)
 		result[i*2+1] = expectChange(pin, true)

dht/timesafethermometer.go

@@ -1,5 +1,4 @@
 //go:build tinygo
-// +build tinygo
 
 // Package dht provides a driver for DHTXX family temperature and humidity sensors.
 //

dht/util.go

@@ -1,5 +1,4 @@
 //go:build tinygo
-// +build tinygo
 
 package dht // import "tinygo.org/x/drivers/dht"
 

drivers.go

@@ -3,22 +3,22 @@
 //
 // Here is an example in TinyGo that uses the BMP180 digital barometer:
 //
-// 	package main
+//	package main
 //
-// 	import (
+//	import (
 //		"time"
 //		"machine"
 //
-// 		"tinygo.org/x/drivers/bmp180"
-// 	)
+//		"tinygo.org/x/drivers/bmp180"
+//	)
 //
-// 	func main() {
+//	func main() {
 //		machine.I2C0.Configure(machine.I2CConfig{})
 //		sensor := bmp180.New(machine.I2C0)
 //		sensor.Configure()
 //
-// 		connected := sensor.Connected()
-// 		if !connected {
+//		connected := sensor.Connected()
+//		if !connected {
 //			println("BMP180 not detected")
 //			return
 //		}
@@ -38,5 +38,4 @@
 // Each individual driver is contained within its own sub-package within this package and
 // there are no interdependencies in order to minimize the final size of compiled code that
 // uses any of these drivers.
-//
 package drivers // import "tinygo.org/x/drivers"

ds1307/ds1307.go

@@ -2,7 +2,6 @@
 //
 // Datasheet:
 // https://datasheets.maximintegrated.com/en/ds/DS1307.pdf
-//
 package ds1307 // import "tinygo.org/x/drivers/ds1307"
 
 import (

espat/espat.go

@@ -15,7 +15,6 @@
 //
 // AT command set:
 // https://www.espressif.com/sites/default/files/documentation/4a-esp8266_at_instruction_set_en.pdf
-//
 package espat // import "tinygo.org/x/drivers/espat"
 
 import (

espat/tcp.go

@@ -29,7 +29,7 @@ func (d *Device) GetDNS(domain string) (string, error) {
 		return "", errors.New("Invalid domain lookup result")
 	}
 	res := strings.Split(r[1], "\r\n")
-	return res[0], nil
+	return strings.Trim(res[0], `"`), nil
 }
 
 // ConnectTCPSocket creates a new TCP socket connection for the ESP8266/ESP32.

examples/espat/espconsole/main.go

@@ -6,7 +6,6 @@
 //
 // More information on the Espressif AT command set at:
 // https://www.espressif.com/sites/default/files/documentation/4a-esp8266_at_instruction_set_en.pdf
-//
 package main
 
 import (
@@ -19,9 +18,11 @@ import (
 // change actAsAP to true to act as an access point instead of connecting to one.
 const actAsAP = false
 
-// access point info
-const ssid = "YOURSSID"
-const pass = "YOURPASS"
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // these are the default pins for the Arduino Nano33 IoT.
 // change these to connect to a different UART or pins for the ESP8266/ESP32

examples/espat/esphub/main.go

@@ -3,7 +3,6 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266 <--> INTERNET
-//
 package main
 
 import (
@@ -17,9 +16,11 @@ import (
 // change actAsAP to true to act as an access point instead of connecting to one.
 const actAsAP = false
 
-// access point info
-const ssid = "YOURSSID"
-const pass = "YOURPASS"
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // these are the default pins for the Arduino Nano33 IoT.
 // change these to connect to a different UART or pins for the ESP8266/ESP32

examples/espat/espstation/main.go

@@ -3,7 +3,6 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266
-//
 package main
 
 import (
@@ -14,9 +13,11 @@ import (
 	"tinygo.org/x/drivers/net"
 )
 
-// access point info
-const ssid = "YOURSSID"
-const pass = "YOURPASS"
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the listener aka "hub". Replace with your own info.
 const hubIP = "0.0.0.0"

examples/espat/mqttclient/main.go

@@ -7,8 +7,7 @@
 //
 // You must install the Paho MQTT package to build this program:
 //
-// 		go get -u github.com/eclipse/paho.mqtt.golang
-//
+//	go get -u github.com/eclipse/paho.mqtt.golang
 package main
 
 import (
@@ -20,9 +19,11 @@ import (
 	"tinygo.org/x/drivers/net/mqtt"
 )
 
-// access point info
-const ssid = "YOURSSID"
-const pass = "YOURPASS"
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the MQTT broker to use. Replace with your own info.
 const server = "tcp://test.mosquitto.org:1883"

examples/espat/mqttsub/main.go

@@ -7,8 +7,7 @@
 //
 // You must also install the Paho MQTT package to build this program:
 //
-// 		go get -u github.com/eclipse/paho.mqtt.golang
-//
+//	go get -u github.com/eclipse/paho.mqtt.golang
 package main
 
 import (
@@ -21,9 +20,11 @@ import (
 	"tinygo.org/x/drivers/net/mqtt"
 )
 
-// access point info
-const ssid = "YOURSSID"
-const pass = "YOURPASS"
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the MQTT broker to use. Replace with your own info.
 //const server = "tcp://test.mosquitto.org:1883"

examples/espat/tcpclient/main.go

@@ -3,7 +3,6 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266
-//
 package main
 
 import (
@@ -14,9 +13,11 @@ import (
 	"tinygo.org/x/drivers/net"
 )
 
-// access point info
-const ssid = "YOURSSID"
-const pass = "YOURPASS"
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const serverIP = "0.0.0.0"

examples/ft6336/basic/m5stack_core2.go

@@ -1,5 +1,4 @@
 //go:build m5stack_core2
-// +build m5stack_core2
 
 package main
 

examples/ft6336/touchpaint/m5stack_core2.go

@@ -1,5 +1,4 @@
 //go:build m5stack_core2
-// +build m5stack_core2
 
 package main
 

examples/gc9a01/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"machine"
+	"time"
+
+	"image/color"
+
+	"tinygo.org/x/drivers/gc9a01"
+)
+
+func main() {
+	machine.SPI0.Configure(machine.SPIConfig{
+		Frequency: 80000000,
+	})
+	display := gc9a01.New(machine.SPI0, machine.P6, machine.P7, machine.P8, machine.P9)
+	display.Configure(gc9a01.Config{Orientation: gc9a01.HORIZONTAL, Width: 240, Height: 240})
+
+	width, height := display.Size()
+
+	white := color.RGBA{255, 255, 255, 255}
+	red := color.RGBA{255, 0, 0, 255}
+	blue := color.RGBA{0, 0, 255, 255}
+	green := color.RGBA{0, 255, 0, 255}
+	black := color.RGBA{0, 0, 0, 255}
+
+	display.FillScreen(black)
+
+	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)
+	display.FillRectangle(width/2, height/2, width/2, height/2, blue)
+	display.FillRectangle(width/4, height/4, width/2, height/2, black)
+
+	for {
+		time.Sleep(time.Hour)
+	}
+
+}

examples/ili9341/initdisplay/atsamd21.go

@@ -1,5 +1,4 @@
 //go:build atsamd21
-// +build atsamd21
 
 package initdisplay
 
@@ -9,8 +8,6 @@ import (
 	"tinygo.org/x/drivers/ili9341"
 )
 
-var ()
-
 func InitDisplay() *ili9341.Device {
 	machine.SPI0.Configure(machine.SPIConfig{
 		SCK:       machine.SPI0_SCK_PIN,

examples/ili9341/initdisplay/feather.go

@@ -1,5 +1,4 @@
 //go:build feather_m0 || feather_m4 || feather_m4_can || feather_nrf52840 || feather_nrf52840_sense || feather_stm32f405 || feather_rp2040
-// +build feather_m0 feather_m4 feather_m4_can feather_nrf52840 feather_nrf52840_sense feather_stm32f405 feather_rp2040
 
 package initdisplay
 

examples/ili9341/initdisplay/m5stack.go

@@ -1,5 +1,4 @@
 //go:build m5stack
-// +build m5stack
 
 package initdisplay
 

examples/ili9341/initdisplay/m5stack_core2.go

@@ -1,5 +1,4 @@
 //go:build m5stack_core2
-// +build m5stack_core2
 
 package initdisplay
 

examples/ili9341/initdisplay/pyportal.go

@@ -1,5 +1,4 @@
 //go:build pyportal
-// +build pyportal
 
 package initdisplay
 

examples/ili9341/initdisplay/wioterminal.go

@@ -1,5 +1,4 @@
 //go:build wioterminal
-// +build wioterminal
 
 package initdisplay
 

examples/makeybutton/main.go

@@ -9,7 +9,7 @@ import (
 
 var (
 	led    machine.Pin = machine.LED
-	button machine.Pin = machine.BUTTON
+	button machine.Pin = machine.D10
 	key    *makeybutton.Button
 )
 
@@ -25,6 +25,7 @@ func main() {
 		case makeybutton.Released:
 			led.Low()
 		}
-		time.Sleep(100 * time.Millisecond)
+		// the more frequent the more responsive
+		time.Sleep(50 * time.Millisecond)
 	}
 }

examples/microphone/main.go

@@ -2,7 +2,6 @@
 // to read data from the onboard MEMS microphone.
 //
 // Uses ideas from the https://github.com/adafruit/Adafruit_CircuitPlayground repo.
-//
 package main
 
 import (

examples/qmi8658c/main.go

@@ -0,0 +1,66 @@
+// Connects to an QMI8658C I2C accelerometer/gyroscope and print the read data.
+// This example was made with the "WaveShare RP2040 Round LCD 1.28in" in mind.
+// For more infor about this development board:
+// https://www.waveshare.com/wiki/RP2040-LCD-1.28
+package main
+
+import (
+	"machine"
+	"time"
+
+	imu "tinygo.org/x/drivers/qmi8658c"
+)
+
+func main() {
+	i2c := machine.I2C1
+	// This is the default pinout for the "WaveShare RP2040 Round LCD 1.28in"
+	err := i2c.Configure(machine.I2CConfig{
+		SDA:       machine.GP6,
+		SCL:       machine.GP7,
+		Frequency: 100000,
+	})
+	if err != nil {
+		println("unable to configure I2C:", err)
+		return
+	}
+	// Create a new device
+	d := imu.New(i2c)
+
+	// Check if the device is connected
+	if !d.Connected() {
+		println("unable to connect to sensor")
+		return
+	}
+
+	// This IMU has multiple configurations like output data rate, multiple
+	// measurements scales, low pass filters, low power modes, all the vailable
+	// values can be found in the datasheet and were defined at registers file.
+	// This is the default configuration which will be used if the `nil` value
+	// is passed do the `Configure` method.
+	config := imu.Config{
+		SPIMode:     imu.SPI_4_WIRE,
+		SPIEndian:   imu.SPI_BIG_ENDIAN,
+		SPIAutoInc:  imu.SPI_AUTO_INC,
+		AccEnable:   imu.ACC_ENABLE,
+		AccScale:    imu.ACC_8G,
+		AccRate:     imu.ACC_NORMAL_1000HZ,
+		AccLowPass:  imu.ACC_LOW_PASS_2_62,
+		GyroEnable:  imu.GYRO_FULL_ENABLE,
+		GyroScale:   imu.GYRO_512DPS,
+		GyroRate:    imu.GYRO_1000HZ,
+		GyroLowPass: imu.GYRO_LOW_PASS_2_62,
+	}
+	d.Configure(config)
+
+	// Read the accelation, rotation and temperature data and print them.
+	for {
+		acc_x, acc_y, acc_z := d.ReadAcceleration()
+		gyro_x, gyro_y, gyro_z := d.ReadRotation()
+		temp, _ := d.ReadTemperature()
+		println("-------------------------------")
+		println("acc:", acc_x, acc_y, acc_z)
+		println("gyro:", gyro_x, gyro_y, gyro_z)
+		println("temp:", temp)
+		time.Sleep(time.Millisecond * 100)
+	}
+}

examples/rtl8720dn/mqttclient/main.go

@@ -7,15 +7,16 @@
 //
 // You must install the Paho MQTT package to build this program:
 //
-// 		go get -u github.com/eclipse/paho.mqtt.golang
+//	go get -u github.com/eclipse/paho.mqtt.golang
 //
 // You can check that mqttpub is running successfully with the following command.
 //
-// 		mosquitto_sub -h test.mosquitto.org -t tinygo
-//
+//	mosquitto_sub -h test.mosquitto.org -t tinygo
 package main
 
 import (
+	"machine"
+
 	"fmt"
 	"math/rand"
 	"time"
@@ -28,23 +29,23 @@ import (
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    debug = true
 //    server = "tinygo.org"
 // }
 
 var (
-	ssid     string
-	password string
-	server   string = "tcp://test.mosquitto.org:1883"
-	debug           = false
+	ssid   string
+	pass   string
+	server string = "tcp://test.mosquitto.org:1883"
+	debug         = false
 )
 
 var buf [0x400]byte
 
 var lastRequestTime time.Time
 var conn net.Conn
-var adaptor *rtl8720dn.RTL8720DN
+var adaptor *rtl8720dn.Driver
 
 func main() {
 	err := run()
@@ -59,18 +60,17 @@ var (
 )
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+	// change the UART and pins as needed for platforms other than the WioTerminal.
+	adaptor = rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/mqttclient/wioterminal.go

@@ -1,74 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	if debug {
-		waitSerial()
-	}
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/mqttsub/main.go

@@ -7,16 +7,17 @@
 //
 // You must also install the Paho MQTT package to build this program:
 //
-// 		go get -u github.com/eclipse/paho.mqtt.golang
+//	go get -u github.com/eclipse/paho.mqtt.golang
 //
 // You can check that mqttpub/mqttsub is running successfully with the following command.
 //
-// 		mosquitto_sub -h test.mosquitto.org -t tinygo/tx
-// 		mosquitto_pub -h test.mosquitto.org -t tinygo/rx -m "hello world"
-//
+//	mosquitto_sub -h test.mosquitto.org -t tinygo/tx
+//	mosquitto_pub -h test.mosquitto.org -t tinygo/rx -m "hello world"
 package main
 
 import (
+	"machine"
+
 	"fmt"
 	"math/rand"
 	"time"
@@ -29,23 +30,23 @@ import (
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    debug = true
 //    server = "tinygo.org"
 // }
 
 var (
-	ssid     string
-	password string
-	server   string = "tcp://test.mosquitto.org:1883"
-	debug           = false
+	ssid   string
+	pass   string
+	server string = "tcp://test.mosquitto.org:1883"
+	debug         = false
 )
 
 var buf [0x400]byte
 
 var lastRequestTime time.Time
 var conn net.Conn
-var adaptor *rtl8720dn.RTL8720DN
+var adaptor *rtl8720dn.Driver
 
 func main() {
 	err := run()
@@ -68,18 +69,17 @@ func subHandler(client mqtt.Client, msg mqtt.Message) {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+	// change the UART and pins as needed for platforms other than the WioTerminal.
+	adaptor = rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/mqttsub/wioterminal.go

@@ -1,74 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	if debug {
-		waitSerial()
-	}
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/ntpclient/main.go

@@ -4,28 +4,31 @@
 package main
 
 import (
+	"machine"
+
 	"errors"
 	"fmt"
 	"runtime"
 	"time"
 
 	"tinygo.org/x/drivers/net"
+	"tinygo.org/x/drivers/rtl8720dn"
 )
 
 // IP address of the server aka "hub". Replace with your own info.
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    ntpHost = "129.6.15.29"
 //    debug = true
 // }
 
 var (
-	ssid     string
-	password string
-	ntpHost  = "129.6.15.29"
-	debug    = false
+	ssid    string
+	pass    string
+	ntpHost = "129.6.15.29"
+	debug   = false
 )
 
 const NTP_PACKET_SIZE = 48
@@ -41,18 +44,16 @@ func main() {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}
@@ -99,9 +100,7 @@ func getCurrentTime(conn *net.UDPSerialConn) (time.Time, error) {
 		} else if n == 0 {
 			continue // no packet received yet
 		} else if n != NTP_PACKET_SIZE {
-			if n != NTP_PACKET_SIZE {
-				return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
-			}
+			return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
 		}
 		return parseNTPpacket(), nil
 	}

examples/rtl8720dn/ntpclient/wioterminal.go

@@ -1,72 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	waitSerial()
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/tcpclient/main.go

@@ -4,28 +4,30 @@
 // You can open a server to accept connections from this program using:
 //
 // nc -w 5 -lk 8080
-//
 package main
 
 import (
+	"machine"
+
 	"bytes"
 	"fmt"
 	"time"
 
 	"tinygo.org/x/drivers/net"
+	"tinygo.org/x/drivers/rtl8720dn"
 )
 
 // You can override the setting with the init() in another source code.
 // func init() {
-//    ssid = "sghome-gw"
-//    password = "3af25537b4524"
+//    ssid = "your-ssid"
+//    pass = "your-password"
 //    serverIP = "192.168.1.119"
 //    debug = true
 // }
 
 var (
 	ssid     string
-	password string
+	pass     string
 	serverIP = ""
 	debug    = false
 )
@@ -41,18 +43,16 @@ func main() {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/tcpclient/wioterminal.go

@@ -1,72 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	waitSerial()
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/tlsclient/main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"machine"
+
 	"bufio"
 	"fmt"
 	"strings"
@@ -14,17 +16,17 @@ import (
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    debug = true
 //    url = "https://www.example.com"
 //    test_root_ca = "..."
 // }
 
 var (
-	ssid     string
-	password string
-	url      string = "https://www.example.com"
-	debug           = false
+	ssid  string
+	pass  string
+	url   string = "https://www.example.com"
+	debug        = false
 )
 
 // Set the test_root_ca created by the following command
@@ -57,7 +59,6 @@ var buf [0x1000]byte
 
 var lastRequestTime time.Time
 var conn net.Conn
-var adaptor *rtl8720dn.RTL8720DN
 
 func main() {
 	err := run()
@@ -68,20 +69,19 @@ func main() {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	rtl.SetRootCA(&test_root_ca)
-	net.UseDriver(rtl)
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
+
+	adaptor.SetRootCA(&test_root_ca)
 	http.SetBuf(buf[:])
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/tlsclient/wioterminal.go

@@ -1,72 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	waitSerial()
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/udpstation/main.go

@@ -1,28 +1,31 @@
 package main
 
 import (
+	"machine"
+
 	"fmt"
 	"strconv"
 	"time"
 
 	"tinygo.org/x/drivers/net"
 	"tinygo.org/x/drivers/net/http"
+	"tinygo.org/x/drivers/rtl8720dn"
 )
 
 // IP address of the server aka "hub". Replace with your own info.
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    hubIP = "192.168.1.118"
 //    debug = true
 // }
 
 var (
-	ssid     string
-	password string
-	hubIP    = ""
-	debug    = false
+	ssid  string
+	pass  string
+	hubIP = ""
+	debug = false
 )
 
 var buf [0x400]byte
@@ -36,19 +39,18 @@ func main() {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
+
 	http.SetBuf(buf[:])
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/udpstation/wioterminal.go

@@ -1,72 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	waitSerial()
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/version/main.go

@@ -1,10 +1,12 @@
 package main
 
 import (
+	"machine"
+
 	"fmt"
 	"time"
 
-	"tinygo.org/x/drivers/examples/rtl8720dn"
+	"tinygo.org/x/drivers/rtl8720dn"
 )
 
 var (
@@ -20,13 +22,11 @@ func main() {
 }
 
 func run() error {
-	//rtl8720dn.Debug(true)
-	rtl, err := rtl8720dn.Setup()
-	if err != nil {
-		return err
-	}
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
 
-	ver, err := rtl.Version()
+	ver, err := adaptor.Version()
 	if err != nil {
 		return nil
 	}

examples/rtl8720dn/webclient-tinyterm/main.go

@@ -1,14 +1,18 @@
 package main
 
 import (
+	"machine"
+
 	"bufio"
 	"fmt"
 	"image/color"
 	"strings"
 	"time"
 
-	"tinygo.org/x/drivers/net"
+	"tinygo.org/x/drivers/ili9341"
 	"tinygo.org/x/drivers/net/http"
+	"tinygo.org/x/drivers/rtl8720dn"
+
 	"tinygo.org/x/tinyfont/proggy"
 	"tinygo.org/x/tinyterm"
 )
@@ -17,19 +21,28 @@ import (
 // If debug is enabled, a serial connection is required.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    debug = false // true
 //    server = "tinygo.org"
 // }
 
 var (
-	ssid     string
-	password string
-	url      = "http://tinygo.org/"
-	debug    = false
+	ssid  string
+	pass  string
+	url   = "http://tinygo.org/"
+	debug = false
 )
 
 var (
+	display = ili9341.NewSPI(
+		machine.SPI3,
+		machine.LCD_DC,
+		machine.LCD_SS_PIN,
+		machine.LCD_RESET,
+	)
+
+	backlight = machine.LCD_BACKLIGHT
+
 	terminal = tinyterm.NewTerminal(display)
 
 	black = color.RGBA{0, 0, 0, 255}
@@ -66,21 +79,22 @@ func run() error {
 		fmt.Fprintf(terminal, "Running in debug mode.\r\n")
 		fmt.Fprintf(terminal, "A serial connection is required to continue execution.\r\n")
 	}
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
+
+	http.UseDriver(adaptor)
 	http.SetBuf(buf[:])
 
 	fmt.Fprintf(terminal, "ConnectToAP()\r\n")
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 	fmt.Fprintf(terminal, "connected\r\n\r\n")
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}
@@ -134,3 +148,15 @@ func run() error {
 		time.Sleep(10 * time.Second)
 	}
 }
+
+func init() {
+	machine.SPI3.Configure(machine.SPIConfig{
+		SCK:       machine.LCD_SCK_PIN,
+		SDO:       machine.LCD_SDO_PIN,
+		SDI:       machine.LCD_SDI_PIN,
+		Frequency: 40000000,
+	})
+	display.Configure(ili9341.Config{})
+
+	backlight.Configure(machine.PinConfig{machine.PinOutput})
+}

examples/rtl8720dn/webclient-tinyterm/wioterminal.go

@@ -1,98 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/ili9341"
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-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,
-	})
-	display.Configure(ili9341.Config{})
-
-	backlight.Configure(machine.PinConfig{machine.PinOutput})
-}
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	if debug {
-		waitSerial()
-	}
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/webclient/main.go

@@ -1,28 +1,30 @@
 package main
 
 import (
+	"machine"
+
 	"bufio"
 	"fmt"
 	"strings"
 	"time"
 
-	"tinygo.org/x/drivers/net"
 	"tinygo.org/x/drivers/net/http"
+	"tinygo.org/x/drivers/rtl8720dn"
 )
 
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    url = "http://tinygo.org/"
 //    debug = true
 // }
 
 var (
-	ssid     string
-	password string
-	url      = "http://tinygo.org/"
-	debug    = false
+	ssid  string
+	pass  string
+	url   = "http://tinygo.org/"
+	debug = false
 )
 
 var buf [0x400]byte
@@ -36,19 +38,19 @@ func main() {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	net.UseDriver(rtl)
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
+
+	http.UseDriver(adaptor)
 	http.SetBuf(buf[:])
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/webclient/wioterminal.go

@@ -1,72 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	waitSerial()
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/webserver/main.go

@@ -7,19 +7,20 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers/net/http"
+	"tinygo.org/x/drivers/rtl8720dn"
 )
 
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    password = "your-password"
+//    pass = "your-password"
 //    debug = true
 // }
 
 var (
-	ssid     string
-	password string
-	debug    = false
+	ssid  string
+	pass  string
+	debug = false
 )
 
 var led = machine.LED
@@ -37,18 +38,18 @@ func main() {
 }
 
 func run() error {
-	rtl, err := setupRTL8720DN()
-	if err != nil {
-		return err
-	}
-	http.UseDriver(rtl)
+	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
+	adaptor.Debug(debug)
+	adaptor.Configure()
 
-	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
+	http.UseDriver(adaptor)
+
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
 	if err != nil {
 		return err
 	}
 
-	ip, subnet, gateway, err := rtl.GetIP()
+	ip, subnet, gateway, err := adaptor.GetIP()
 	if err != nil {
 		return err
 	}

examples/rtl8720dn/webserver/wioterminal.go

@@ -1,74 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package main
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart UARTx
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	if debug {
-		waitSerial()
-	}
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}

examples/rtl8720dn/wioterminal.go

@@ -1,79 +0,0 @@
-//go:build wioterminal
-// +build wioterminal
-
-package rtl8720dn
-
-import (
-	"device/sam"
-	"machine"
-	"runtime/interrupt"
-	"time"
-
-	"tinygo.org/x/drivers/rtl8720dn"
-)
-
-var (
-	uart  UARTx
-	debug bool
-)
-
-func handleInterrupt(interrupt.Interrupt) {
-	// should reset IRQ
-	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
-	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
-}
-
-func Setup() (*rtl8720dn.RTL8720DN, error) {
-	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	machine.RTL8720D_CHIP_PU.Low()
-	time.Sleep(100 * time.Millisecond)
-	machine.RTL8720D_CHIP_PU.High()
-	time.Sleep(1000 * time.Millisecond)
-	if debug {
-		waitSerial()
-	}
-
-	uart = UARTx{
-		UART: &machine.UART{
-			Buffer: machine.NewRingBuffer(),
-			Bus:    sam.SERCOM0_USART_INT,
-			SERCOM: 0,
-		},
-	}
-
-	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
-	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
-
-	rtl := rtl8720dn.New(uart)
-	rtl.Debug(debug)
-
-	_, err := rtl.Rpc_tcpip_adapter_init()
-	if err != nil {
-		return nil, err
-	}
-
-	return rtl, nil
-}
-
-// Wait for user to open serial console
-func waitSerial() {
-	for !machine.Serial.DTR() {
-		time.Sleep(100 * time.Millisecond)
-	}
-}
-
-type UARTx struct {
-	*machine.UART
-}
-
-func (u UARTx) Read(p []byte) (n int, err error) {
-	if u.Buffered() == 0 {
-		time.Sleep(1 * time.Millisecond)
-		return 0, nil
-	}
-	return u.UART.Read(p)
-}
-
-func Debug(b bool) {
-	debug = b
-}

examples/sdcard/console/feather-m4.go

@@ -1,5 +1,4 @@
 //go:build feather_m4 || feather_m4_can || feather_nrf52840
-// +build feather_m4 feather_m4_can feather_nrf52840
 
 package main
 

examples/sdcard/console/grandcentral-m4.go

@@ -1,5 +1,4 @@
 //go:build grandcentral_m4
-// +build grandcentral_m4
 
 package main
 

examples/sdcard/console/m0.go

@@ -1,5 +1,4 @@
 //go:build atsamd21 && !p1am_100
-// +build atsamd21,!p1am_100
 
 package main
 

examples/sdcard/console/p1am-100.go

@@ -1,5 +1,4 @@
 //go:build p1am_100
-// +build p1am_100
 
 package main
 

examples/sdcard/console/pygamer.go

@@ -1,5 +1,4 @@
 //go:build pygamer
-// +build pygamer
 
 package main
 

examples/sdcard/console/pyportal.go

@@ -1,5 +1,4 @@
 //go:build pyportal
-// +build pyportal
 
 package main
 

examples/sdcard/console/thingplus-rp2040.go

@@ -1,5 +1,4 @@
 //go:build thingplus_rp2040
-// +build thingplus_rp2040
 
 package main
 

examples/sdcard/console/wioterminal.go

@@ -1,5 +1,4 @@
 //go:build wioterminal
-// +build wioterminal
 
 package main
 

examples/sdcard/tinyfs/console/console.go

@@ -1,5 +1,4 @@
 //go:build tinygo
-// +build tinygo
 
 package console
 

examples/sdcard/tinyfs/feather-m4.go

@@ -1,5 +1,4 @@
 //go:build feather_m4 || feather_m4_can || feather_nrf52840
-// +build feather_m4 feather_m4_can feather_nrf52840
 
 package main
 

examples/sdcard/tinyfs/grandcentral-m4.go

@@ -1,5 +1,4 @@
 //go:build grandcentral_m4
-// +build grandcentral_m4
 
 package main
 

examples/sdcard/tinyfs/m0.go

@@ -1,5 +1,4 @@
 //go:build atsamd21 && !p1am_100
-// +build atsamd21,!p1am_100
 
 package main
 

examples/sdcard/tinyfs/p1am-100.go

@@ -1,5 +1,4 @@
 //go:build p1am_100
-// +build p1am_100
 
 package main
 

examples/sdcard/tinyfs/pygamer.go

@@ -1,5 +1,4 @@
 //go:build pygamer
-// +build pygamer
 
 package main
 

examples/sdcard/tinyfs/pyportal.go

@@ -1,5 +1,4 @@
 //go:build pyportal
-// +build pyportal
 
 package main
 

examples/sdcard/tinyfs/thingplus-rp2040.go

@@ -1,5 +1,4 @@
 //go:build thingplus_rp2040
-// +build thingplus_rp2040
 
 package main
 

examples/sdcard/tinyfs/wioterminal.go

@@ -1,5 +1,4 @@
 //go:build wioterminal
-// +build wioterminal
 
 package main
 

examples/sx126x/rfswitch/gnse.go

@@ -1,14 +1,13 @@
 //go:build gnse
-// +build gnse
 
 /*
- Generic Node Sensor Edition
- RFSwitch
+Generic Node Sensor Edition
+RFSwitch
 
- Disable Switch   :  PB8=OFF PA0=OFF  PA1=OFF
- Enable RX        :  PB8=ON  PA0=ON   PA1=OFF
- Enable TX RFO LP :  PB8=ON  PA0=ON   PA1=ON
- Enable TX RFO HP :  PB8=ON  PA0=OFF  PA1=ON
+Disable Switch   :  PB8=OFF PA0=OFF  PA1=OFF
+Enable RX        :  PB8=ON  PA0=ON   PA1=OFF
+Enable TX RFO LP :  PB8=ON  PA0=ON   PA1=ON
+Enable TX RFO HP :  PB8=ON  PA0=OFF  PA1=ON
 */
 package rfswitch
 

examples/sx126x/rfswitch/lorae5.go

@@ -1,5 +1,4 @@
 //go:build lorae5
-// +build lorae5
 
 package radio
 

examples/sx126x/rfswitch/wl55jc.go

@@ -1,9 +1,8 @@
 //go:build nucleowl55jc
-// +build nucleowl55jc
 
 /*
- Nucleo WL55JC1
- RFSwitch
+	Nucleo WL55JC1
+	RFSwitch
 
 +-----------+---------+------------+------------+
 |           | FE_CTRL1 |  FE_CTRL2 |   FE_CTRL3 |

examples/vl6180x/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/vl6180x"
+
+	"time"
+)
+
+func main() {
+	time.Sleep(3 * time.Second)
+	machine.I2C0.Configure(machine.I2CConfig{
+		Frequency: 400000,
+	})
+	sensor := vl6180x.New(machine.I2C0)
+	connected := sensor.Connected()
+	if !connected {
+		println("VL6180X device not found")
+		return
+	}
+	println("VL6180X device found")
+	sensor.Configure(true)
+	var value uint16
+	var status uint8
+	for {
+		value = sensor.Read()
+		status = sensor.ReadStatus()
+		println("Distance (mm):", value)
+		println("Status:", status)
+		println("---")
+		time.Sleep(100 * time.Millisecond)
+	}
+}

examples/wifi/tcpclient/espat.go

@@ -1,5 +1,4 @@
 //go:build espat
-// +build espat
 
 package main
 

examples/wifi/tcpclient/main.go

@@ -4,7 +4,6 @@
 // You can open a server to accept connections from this program using:
 //
 // nc -w 5 -lk 8080
-//
 package main
 
 import (
@@ -15,9 +14,11 @@ import (
 	"tinygo.org/x/drivers/net"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const serverIP = ""

examples/wifi/tcpclient/rtl8720dn.go

@@ -1,5 +1,4 @@
 //go:build rtl8720dn
-// +build rtl8720dn
 
 package main
 

examples/wifi/tcpclient/wifinina.go

@@ -1,5 +1,4 @@
 //go:build wifinina
-// +build wifinina
 
 package main
 

examples/wifinina/connect/main.go

@@ -9,9 +9,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // these are the default pins for the Arduino Nano33 IoT.
 // change these to connect to a different UART or pins for the ESP8266/ESP32

examples/wifinina/http-get/main.go

@@ -9,7 +9,6 @@
 //
 // examples/wifinina/webclient
 // examples/wifinina/tlsclient
-//
 package main
 
 import (
@@ -24,9 +23,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 // Can specify a URL starting with http or https

examples/wifinina/mqttclient/main.go

@@ -7,8 +7,7 @@
 //
 // You must install the Paho MQTT package to build this program:
 //
-// 		go get -u github.com/eclipse/paho.mqtt.golang
-//
+//	go get -u github.com/eclipse/paho.mqtt.golang
 package main
 
 import (
@@ -21,9 +20,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the MQTT broker to use. Replace with your own info.
 const server = "tcp://test.mosquitto.org:1883"

examples/wifinina/mqttsub/main.go

@@ -7,8 +7,7 @@
 //
 // You must also install the Paho MQTT package to build this program:
 //
-// 		go get -u github.com/eclipse/paho.mqtt.golang
-//
+//	go get -u github.com/eclipse/paho.mqtt.golang
 package main
 
 import (
@@ -21,9 +20,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the MQTT broker to use. Replace with your own info.
 const server = "tcp://test.mosquitto.org:1883"

examples/wifinina/ntpclient/main.go

@@ -14,9 +14,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const ntpHost = "129.6.15.29"
@@ -109,9 +111,7 @@ func getCurrentTime(conn *net.UDPSerialConn) (time.Time, error) {
 		} else if n == 0 {
 			continue // no packet received yet
 		} else if n != NTP_PACKET_SIZE {
-			if n != NTP_PACKET_SIZE {
-				return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
-			}
+			return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
 		}
 		return parseNTPpacket(), nil
 	}

examples/wifinina/pins/main.go

@@ -1,5 +1,4 @@
 //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

examples/wifinina/tcpclient/main.go

@@ -4,7 +4,6 @@
 // You can open a server to accept connections from this program using:
 //
 // nc -w 5 -lk 8080
-//
 package main
 
 import (
@@ -17,9 +16,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const serverIP = ""

examples/wifinina/tlsclient/main.go

@@ -4,7 +4,6 @@
 // You shall see "strict-transport-security" header in the response,
 // this confirms communication is indeed over HTTPS
 // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security
-//
 package main
 
 import (
@@ -18,9 +17,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const server = "tinygo.org"

examples/wifinina/udpstation/main.go

@@ -3,7 +3,6 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> SPI <--> ESP32
-//
 package main
 
 import (
@@ -15,9 +14,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const hubIP = ""

examples/wifinina/webclient/main.go

@@ -3,7 +3,6 @@
 // Arduino example:
 //
 // https://github.com/arduino-libraries/WiFiNINA/blob/master/examples/WiFiWebClientRepeating/
-//
 package main
 
 import (
@@ -15,9 +14,11 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )
 
-// access point info
-const ssid = ""
-const pass = ""
+var (
+	// access point info
+	ssid string
+	pass string
+)
 
 // IP address of the server aka "hub". Replace with your own info.
 const server = "tinygo.org"

examples/wifinina/webserver/main.go

@@ -0,0 +1,209 @@
+package main
+
+import (
+	"fmt"
+	"machine"
+	"strconv"
+	"time"
+
+	"tinygo.org/x/drivers/net/http"
+	"tinygo.org/x/drivers/wifinina"
+)
+
+// You can override the settings with the init() in another source code:
+//
+// func init() {
+//    ssid = "your-ssid"
+//    pass = "your-password"
+// }
+//
+// Or use -ldflags option on tinygo command to set at compile-time:
+//
+// tinygo flash ... -ldflags '-X "main.ssid=xxx" -X "main.pass=xxx"' ...
+//
+
+var (
+	ssid string
+	pass string
+)
+
+var led = machine.LED
+
+func main() {
+	led.Configure(machine.PinConfig{Mode: machine.PinOutput})
+
+	err := run()
+	for err != nil {
+		fmt.Printf("error: %s\r\n", err.Error())
+		time.Sleep(5 * time.Second)
+	}
+}
+
+func run() error {
+
+	spi := machine.NINA_SPI
+	spi.Configure(machine.SPIConfig{
+		Frequency: 8 * 1e6,
+		SDO:       machine.NINA_SDO,
+		SDI:       machine.NINA_SDI,
+		SCK:       machine.NINA_SCK,
+	})
+
+	adaptor := wifinina.New(spi,
+		machine.NINA_CS,
+		machine.NINA_ACK,
+		machine.NINA_GPIO0,
+		machine.NINA_RESETN)
+	adaptor.Configure()
+
+	time.Sleep(2 * time.Second)
+	println("Connecting to " + ssid)
+	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	if err != nil {
+		return err
+	}
+
+	println("Connected.")
+
+	time.Sleep(2 * time.Second)
+	ip, subnet, gateway, err := adaptor.GetIP()
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("IP Address : %s\r\n", ip)
+	fmt.Printf("Mask       : %s\r\n", subnet)
+	fmt.Printf("Gateway    : %s\r\n", gateway)
+
+	http.UseDriver(adaptor)
+
+	http.HandleFunc("/", root)
+	http.HandleFunc("/hello", hello)
+	http.HandleFunc("/cnt", cnt)
+	http.HandleFunc("/6", sixlines)
+	http.HandleFunc("/off", LED_OFF)
+	http.HandleFunc("/on", LED_ON)
+
+	return http.ListenAndServe(":80", nil)
+}
+
+func root(w http.ResponseWriter, r *http.Request) {
+	access := 1
+
+	cookie, err := r.Cookie("access")
+	if err != nil {
+		if err == http.ErrNoCookie {
+			cookie = &http.Cookie{
+				Name:  "access",
+				Value: "1",
+			}
+		} else {
+			http.Error(w, fmt.Sprintf("%s", err.Error()), http.StatusBadRequest)
+			return
+		}
+	} else {
+		v, err := strconv.ParseInt(cookie.Value, 10, 0)
+		if err != nil {
+			http.Error(w, fmt.Sprintf("invalid cookie.Value : %s", cookie.Value), http.StatusBadRequest)
+			return
+		}
+		cookie.Value = fmt.Sprintf("%d", v+1)
+		access = int(v) + 1
+	}
+	http.SetCookie(w, cookie)
+	w.WriteHeader(http.StatusOK)
+
+	fmt.Fprintf(w, `
+<html>
+<head>
+    <title>TinyGo HTTP Server</title>
+    <script language="javascript" type="text/javascript">
+        var counter = 0
+        function ledOn() { fetch("/on"); }
+        function ledOff() { fetch("/off"); }
+        function fetchCnt() { fetch("/cnt").then(response => response.json()).then(json => { counter = json.cnt; cnt.innerHTML = counter; }); }
+        function incrCnt() { counter = counter + 1; fetch("/cnt?cnt=" + counter, { method: 'POST' }).then(response => response.json()).then(json => { counter = json.cnt; cnt.innerHTML = counter; }); }
+        function setCnt() { fetch("/cnt", {
+            method: "POST",
+            body: "cnt=" + document.getElementsByName("cnt")[0].value,
+            headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+        }).then(response => response.json()).then(json => { counter = json.cnt; cnt.innerHTML = counter; }); return false; }
+        function onLoad() { fetchCnt(); }
+    </script>
+</head>
+<body onLoad="onLoad()">
+    <h5>TinyGo HTTP Server</h5>
+
+    <p>
+        access: %d
+    </p>
+
+    <a href="/hello">/hello</a><br>
+    <a href="/6">/6</a><br>
+
+    <p>
+        LED<br>
+        <a href="javascript:ledOn();">/on</a><br>
+        <a href="javascript:ledOff();">/off</a><br>
+    </p>
+
+
+    <p>
+        <a href="/cnt">/cnt</a><br>
+        cnt: <span id="cnt"></span><br>
+        <a href="javascript:incrCnt()">incrCnt()</a><br>
+        <form id="form1" style="display: inline" onSubmit="return setCnt()">
+        <input type="text" name="cnt">
+        <input type="button" value="set cnt", onClick="setCnt()">
+        </form>
+    </p>
+</body>
+</html>
+    `, access)
+}
+
+func sixlines(w http.ResponseWriter, r *http.Request) {
+	// https://fukuno.jig.jp/3267
+	fmt.Fprint(w, `<body onload='onkeydown=e=>K=parseInt(e.key[5]||6,28)/3-8;Z=X=[B=A=12];Y=_=>`+
+		`{for(C=[q=c=i=4];f=i--*K;c-=!Z[h+(K+6?p+K:C[i]=p*A-(p/9|0)*145)])p=B[i];for(c?0:K+6?h+=K:B=C;`+
+		`i=K=q--;f+=Z[A+p])X[p=h+B[q]]=1;h+=A;if(f|B)for(Z=X,X=[l=228],B=[[-7,-20,6,h=17,-9,3,3][t=++t%7]-4,0,1,t-6?-A:2];l--;)`+
+		`for(l%A?l-=l%A*!Z[l]:(P++,c=l+=A);--c>A;)Z[c]=Z[c-A];for(S="";i<240;S+=X[i]|(X[i]=Z[i]|=++i%A<2|i>228)?i%A?"■":"■<br>":"　");`+
+		`D.innerHTML=S+P;setTimeout(Y,i-P)};Y(h=K=t=P=0)'id=D>`)
+}
+
+func LED_ON(w http.ResponseWriter, r *http.Request) {
+	led.High()
+	w.Header().Set(`Content-Type`, `text/plain; charset=UTF-8`)
+	fmt.Fprintf(w, "led.High()")
+}
+
+func LED_OFF(w http.ResponseWriter, r *http.Request) {
+	led.Low()
+	w.Header().Set(`Content-Type`, `text/plain; charset=UTF-8`)
+	fmt.Fprintf(w, "led.Low()")
+}
+
+func hello(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set(`Content-Type`, `text/plain; charset=UTF-8`)
+	fmt.Fprintf(w, "hello")
+}
+
+var counter int
+
+func cnt(w http.ResponseWriter, r *http.Request) {
+	r.ParseForm()
+	if r.Method == "POST" {
+		c := r.Form.Get("cnt")
+		if c != "" {
+			i64, _ := strconv.ParseInt(c, 0, 0)
+			counter = int(i64)
+		}
+	}
+
+	w.Header().Set(`Content-Type`, `application/json`)
+	fmt.Fprintf(w, `{"cnt": %d}`, counter)
+}
+
+func message(msg string) {
+	println(msg, "\r")
+}