refactor: add display.Pin interface and use it everywhere that is easy to do so

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

CHANGELOG.md

@@ -1,3 +1,30 @@
+0.32.0
+---
+- **enhancements**
+    - **bmp280**
+        - remove alloc on read sensor data
+    - **ws2812**
+        - add 200MHz support for the Cortex-M0/rp2040
+
+- **bugfixes**
+    - **ssd1306**
+        - remove time.Sleep from SSD1306 SPI transfer code
+    - **tmc2209**
+        - tmc2209 bug fixes (#755)
+
+- **docs**
+    - **contributing**
+        - add driver design pointer to CONTRIBUTING.md
+
+
+0.31.0
+---
+---
+- **enhancements**
+    - **spi**
+        - update all SPI usage to use either *machine.SPI or drivers.SPI
+
+
 0.30.0
 ---
 - **new devices**

CONTRIBUTING.md

@@ -8,6 +8,9 @@ We would like your help to make this project better, so we appreciate any contri
 
 We'd love to get your feedback on getting started with TinyGo. Run into any difficulty, confusion, or anything else? You are not alone. We want to know about your experience, so we can help the next people. Please open a Github issue with your questions, or you can also get in touch directly with us on our Slack channel at [https://gophers.slack.com/messages/CDJD3SUP6](https://gophers.slack.com/messages/CDJD3SUP6).
 
+### Driver design
+Before porting or writing a driver from scratch please read **[Driver Design for TinyGo](https://tinygo.org/docs/guides/driver-design)**.
+
 ### One of the TinyGo drivers is not working as you expect
 
 Please open a Github issue with your problem, and we will be happy to assist.

apa102/apa102.go

@@ -5,7 +5,6 @@ package apa102 // import "tinygo.org/x/drivers/apa102"
 
 import (
 	"image/color"
-	"machine"
 
 	"tinygo.org/x/drivers"
 )
@@ -37,7 +36,7 @@ func New(b drivers.SPI) *Device {
 
 // NewSoftwareSPI returns a new APA102 driver that will use a software based
 // implementation of the SPI protocol.
-func NewSoftwareSPI(sckPin, sdoPin machine.Pin, delay uint32) *Device {
+func NewSoftwareSPI(sckPin, sdoPin drivers.Pin, delay uint32) *Device {
 	return New(&bbSPI{SCK: sckPin, SDO: sdoPin, Delay: delay})
 }
 

apa102/softspi.go

@@ -1,6 +1,8 @@
 package apa102
 
-import "machine"
+import (
+	"tinygo.org/x/drivers"
+)
 
 // bbSPI is a dumb bit-bang implementation of SPI protocol that is hardcoded
 // to mode 0 and ignores trying to receive data. Just enough for the APA102.
@@ -8,15 +10,14 @@ import "machine"
 // most purposes other than the APA102 package. It might be desirable to make
 // this more generic and include it in the TinyGo "machine" package instead.
 type bbSPI struct {
-	SCK   machine.Pin
-	SDO   machine.Pin
+	SCK   drivers.Pin
+	SDO   drivers.Pin
 	Delay uint32
 }
 
-// Configure sets up the SCK and SDO pins as outputs and sets them low
+// Configure sets the SCK and SDO pins to low.
+// Note that the SCK and SDO pins must already be configured as outputs.
 func (s *bbSPI) Configure() {
-	s.SCK.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	s.SDO.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	s.SCK.Low()
 	s.SDO.Low()
 	if s.Delay == 0 {

bmi160/bmi160.go

@@ -1,7 +1,6 @@
 package bmi160
 
 import (
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -11,7 +10,7 @@ import (
 // also an I2C interface, but it is not yet supported.
 type DeviceSPI struct {
 	// Chip select pin
-	CSB machine.Pin
+	CSB drivers.Pin
 
 	buf [7]byte
 
@@ -22,18 +21,16 @@ type DeviceSPI struct {
 // NewSPI returns a new device driver. The pin and SPI interface are not
 // touched, provide a fully configured SPI object and call Configure to start
 // using this device.
-func NewSPI(csb machine.Pin, spi drivers.SPI) *DeviceSPI {
+func NewSPI(csb drivers.Pin, spi drivers.SPI) *DeviceSPI {
 	return &DeviceSPI{
 		CSB: csb, // chip select
 		Bus: spi,
 	}
 }
 
-// Configure configures the BMI160 for use. It configures the CSB pin and
-// configures the BMI160, but it does not configure the SPI interface (it is
-// assumed to be up and running).
+// Configure configures the BMI160 for use. The CSB pin  anf the SPI interface
+// should be configured already. This function configures the BMI160 only.
 func (d *DeviceSPI) Configure() error {
-	d.CSB.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	d.CSB.High()
 
 	// The datasheet recommends doing a register read from address 0x7F to get

bmp280/bmp280.go

@@ -23,6 +23,7 @@ type Filter uint
 type Device struct {
 	bus         drivers.I2C
 	Address     uint16
+	buf         [6]byte
 	cali        calibrationCoefficients
 	Temperature Oversampling
 	Pressure    Oversampling
@@ -134,8 +135,8 @@ func (d *Device) PrintCali() {
 
 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000).
 func (d *Device) ReadTemperature() (temperature int32, err error) {
-	data, err := d.readData(REG_TEMP, 3)
-	if err != nil {
+	data := d.buf[:3]
+	if err = d.readData(REG_TEMP, data); err != nil {
 		return
 	}
 
@@ -158,8 +159,8 @@ func (d *Device) ReadTemperature() (temperature int32, err error) {
 // ReadPressure returns the pressure in milli pascals (mPa).
 func (d *Device) ReadPressure() (pressure int32, err error) {
 	// First 3 bytes are Pressure, last 3 bytes are Temperature
-	data, err := d.readData(REG_PRES, 6)
-	if err != nil {
+	data := d.buf[:6]
+	if err = d.readData(REG_PRES, data); err != nil {
 		return
 	}
 
@@ -203,7 +204,7 @@ func (d *Device) ReadPressure() (pressure int32, err error) {
 }
 
 // readData reads n number of bytes of the specified register
-func (d *Device) readData(register int, n int) ([]byte, error) {
+func (d *Device) readData(register int, data []byte) error {
 	// If not in normal mode, set the mode to FORCED mode, to prevent incorrect measurements
 	// After the measurement in FORCED mode, the sensor will return to SLEEP mode
 	if d.Mode != MODE_NORMAL {
@@ -218,9 +219,7 @@ func (d *Device) readData(register int, n int) ([]byte, error) {
 	}
 
 	// Read the requested register
-	data := make([]byte, n)
-	err := legacy.ReadRegister(d.bus, uint8(d.Address), uint8(register), data[:])
-	return data, err
+	return legacy.ReadRegister(d.bus, uint8(d.Address), uint8(register), data[:])
 }
 
 // convert3Bytes converts three bytes to int32

buzzer/buzzer.go

@@ -2,20 +2,20 @@
 package buzzer // import "tinygo.org/x/drivers/buzzer"
 
 import (
-	"machine"
-
 	"time"
+
+	"tinygo.org/x/drivers"
 )
 
 // Device wraps a GPIO connection to a buzzer.
 type Device struct {
-	pin  machine.Pin
+	pin  drivers.Pin
 	High bool
 	BPM  float64
 }
 
 // New returns a new buzzer driver given which pin to use
-func New(pin machine.Pin) Device {
+func New(pin drivers.Pin) Device {
 	return Device{
 		pin:  pin,
 		High: false,

easystepper/easystepper.go

@@ -3,8 +3,9 @@ package easystepper // import "tinygo.org/x/drivers/easystepper"
 
 import (
 	"errors"
-	"machine"
 	"time"
+
+	"tinygo.org/x/drivers"
 )
 
 // StepMode determines the coil sequence used to perform a single step
@@ -33,7 +34,7 @@ func (sm StepMode) stepCount() uint {
 // DeviceConfig contains the configuration data for a single easystepper driver
 type DeviceConfig struct {
 	// Pin1 ... Pin4 determines the pins to configure and use for the device
-	Pin1, Pin2, Pin3, Pin4 machine.Pin
+	Pin1, Pin2, Pin3, Pin4 drivers.Pin
 	// StepCount is the number of steps required to perform a full revolution of the stepper motor
 	StepCount uint
 	// RPM determines the speed of the stepper motor in 'Revolutions per Minute'
@@ -46,12 +47,12 @@ type DeviceConfig struct {
 type DualDeviceConfig struct {
 	DeviceConfig
 	// Pin5 ... Pin8 determines the pins to configure and use for the second device
-	Pin5, Pin6, Pin7, Pin8 machine.Pin
+	Pin5, Pin6, Pin7, Pin8 drivers.Pin
 }
 
 // Device holds the pins and the delay between steps
 type Device struct {
-	pins       [4]machine.Pin
+	pins       [4]drivers.Pin
 	stepDelay  time.Duration
 	stepNumber uint8
 	stepMode   StepMode
@@ -68,17 +69,15 @@ func New(config DeviceConfig) (*Device, error) {
 		return nil, errors.New("config.StepCount and config.RPM must be > 0")
 	}
 	return &Device{
-		pins:      [4]machine.Pin{config.Pin1, config.Pin2, config.Pin3, config.Pin4},
+		pins:      [4]drivers.Pin{config.Pin1, config.Pin2, config.Pin3, config.Pin4},
 		stepDelay: time.Second * 60 / time.Duration((config.StepCount * config.RPM)),
 		stepMode:  config.Mode,
 	}, nil
 }
 
-// Configure configures the pins of the Device
+// Configure does nothing, as it assumes that the pins of the Device have already
+// been configured by the user as outputs.
 func (d *Device) Configure() {
-	for _, pin := range d.pins {
-		pin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	}
 }
 
 // NewDual returns a new dual easystepper driver given 8 pins, number of steps and rpm

examples/gps/i2c/main.go

@@ -10,7 +10,7 @@ import (
 func main() {
 	println("GPS I2C Example")
 	machine.I2C0.Configure(machine.I2CConfig{})
-	ublox := gps.NewI2C(machine.I2C0)
+	ublox := gps.NewI2CWithAddress(machine.I2C0, gps.UBLOX_I2C_ADDRESS)
 	parser := gps.NewParser()
 	var fix gps.Fix
 	for {

ft6336/ft6336.go

@@ -5,8 +5,6 @@
 package ft6336
 
 import (
-	"machine"
-
 	"tinygo.org/x/drivers"
 	"tinygo.org/x/drivers/internal/legacy"
 	"tinygo.org/x/drivers/touch"
@@ -17,11 +15,11 @@ type Device struct {
 	bus     drivers.I2C
 	buf     []byte
 	Address uint8
-	intPin  machine.Pin
+	intPin  drivers.Pin
 }
 
 // New returns FT6336 device for the provided I2C bus using default address.
-func New(i2c drivers.I2C, intPin machine.Pin) *Device {
+func New(i2c drivers.I2C, intPin drivers.Pin) *Device {
 	return &Device{
 		bus:     i2c,
 		buf:     make([]byte, 11),
@@ -34,10 +32,10 @@ func New(i2c drivers.I2C, intPin machine.Pin) *Device {
 type Config struct {
 }
 
-// Configure the FT6336 device.
+// Configure the FT6336 device. Note that the interrupt pin must be configured
+// separately as an input.
 func (d *Device) Configure(config Config) error {
 	d.write1Byte(0xA4, 0x00)
-	d.intPin.Configure(machine.PinConfig{Mode: machine.PinInputPulldown})
 	return nil
 }
 

gc9a01/gc9a01.go

@@ -5,7 +5,6 @@ package gc9a01 // import "tinygo.org/x/drivers/gc9a01"
 
 import (
 	"image/color"
-	"machine"
 	"time"
 
 	"errors"
@@ -22,10 +21,10 @@ type FrameRate uint8
 // Device wraps an SPI connection.
 type Device struct {
 	bus             drivers.SPI
-	dcPin           machine.Pin
-	resetPin        machine.Pin
-	csPin           machine.Pin
-	blPin           machine.Pin
+	dcPin           drivers.Pin
+	resetPin        drivers.Pin
+	csPin           drivers.Pin
+	blPin           drivers.Pin
 	width           int16
 	height          int16
 	columnOffsetCfg int16
@@ -51,12 +50,9 @@ type Config struct {
 	Height       int16
 }
 
-// New creates a new ST7789 connection. The SPI wire must already be configured.
-func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin machine.Pin) Device {
-	resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	blPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
+// New creates a new ST7789 connection. The SPI wire must already be configured, along with the
+// data/command and reset pins as outputs.
+func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin drivers.Pin) Device {
 	return Device{
 		bus:      bus,
 		resetPin: resetPin,

gps/gps.go

@@ -69,10 +69,16 @@ func NewUART(uart drivers.UART) Device {
 }
 
 // NewI2C creates a new I2C GPS connection.
+// Uses the default i2c address (0x42) for backward compatibility reasons.
 func NewI2C(bus drivers.I2C) Device {
+	return NewI2CWithAddress(bus, I2C_ADDRESS)
+}
+
+// NewI2CWithAddress creates a new I2C GPS connection on the provided address
+func NewI2CWithAddress(bus drivers.I2C, i2cAddress uint16) Device {
 	return Device{
 		bus:      bus,
-		address:  I2C_ADDRESS,
+		address:  i2cAddress,
 		buffer:   make([]byte, bufferSize),
 		bufIdx:   bufferSize,
 		sentence: strings.Builder{},

gps/registers.go

@@ -4,7 +4,11 @@ package gps
 
 // The I2C address which this device listens to.
 const (
-	I2C_ADDRESS = 0x42
+	// To ensure backward compatibility
+	I2C_ADDRESS = UBLOX_I2C_ADDRESS
+
+	UBLOX_I2C_ADDRESS   = 0x42
+	PA1010D_I2C_ADDRESS = 0x10
 )
 
 const (

hcsr04/hcsr04.go

@@ -5,30 +5,31 @@
 package hcsr04
 
 import (
-	"machine"
 	"time"
+
+	"tinygo.org/x/drivers"
 )
 
 const TIMEOUT = 23324 // max sensing distance (4m)
 
 // Device holds the pins
 type Device struct {
-	trigger machine.Pin
-	echo    machine.Pin
+	trigger drivers.Pin
+	echo    drivers.Pin
 }
 
 // New returns a new ultrasonic driver given 2 pins
-func New(trigger, echo machine.Pin) Device {
+func New(trigger, echo drivers.Pin) Device {
 	return Device{
 		trigger: trigger,
 		echo:    echo,
 	}
 }
 
-// Configure configures the pins of the Device
+// Configure expects that the pins of the Device have already
+// been configured by the user. Trigger pin should be an output
+// and echo pin should be an input.
 func (d *Device) Configure() {
-	d.trigger.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.echo.Configure(machine.PinConfig{Mode: machine.PinInput})
 }
 
 // ReadDistance returns the distance of the object in mm

lsm6ds3tr/lsm6ds3tr.go

@@ -8,7 +8,6 @@ import (
 	"errors"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
 )
 
 type AccelRange uint8
@@ -26,7 +25,7 @@ type Device struct {
 	accelSampleRate AccelSampleRate
 	gyroRange       GyroRange
 	gyroSampleRate  GyroSampleRate
-	buf             [6]uint8
+	buf             [7]uint8 // up to 6 bytes for read + 1 byte for the register address
 }
 
 // Configuration for LSM6DS3TR device.
@@ -84,30 +83,20 @@ func (d *Device) doConfigure(cfg Configuration) (err error) {
 		d.gyroSampleRate = GYRO_SR_104
 	}
 
-	data := d.buf[:1]
-
 	// Configure accelerometer
-	data[0] = uint8(d.accelRange) | uint8(d.accelSampleRate)
-	err = legacy.WriteRegister(d.bus, uint8(d.Address), CTRL1_XL, data)
+	err = d.writeByte(CTRL1_XL, uint8(d.accelRange)|uint8(d.accelSampleRate))
 	if err != nil {
 		return
 	}
 
-	// Set ODR bit
-	err = legacy.ReadRegister(d.bus, uint8(d.Address), CTRL4_C, data)
-	if err != nil {
-		return
-	}
-	data[0] = data[0] &^ BW_SCAL_ODR_ENABLED
-	data[0] |= BW_SCAL_ODR_ENABLED
-	err = legacy.WriteRegister(d.bus, uint8(d.Address), CTRL4_C, data)
+	// Enable ODR scaling
+	err = d.setBits(CTRL4_C, BW_SCAL_ODR_ENABLED)
 	if err != nil {
 		return
 	}
 
 	// Configure gyroscope
-	data[0] = uint8(d.gyroRange) | uint8(d.gyroSampleRate)
-	err = legacy.WriteRegister(d.bus, uint8(d.Address), CTRL2_G, data)
+	err = d.writeByte(CTRL2_G, uint8(d.gyroRange)|uint8(d.gyroSampleRate))
 	if err != nil {
 		return
 	}
@@ -118,8 +107,10 @@ func (d *Device) doConfigure(cfg Configuration) (err error) {
 // Connected returns whether a LSM6DS3TR has been found.
 // It does a "who am I" request and checks the response.
 func (d *Device) Connected() bool {
-	data := d.buf[:1]
-	legacy.ReadRegister(d.bus, uint8(d.Address), WHO_AM_I, data)
+	data, err := d.readBytes(WHO_AM_I, 1)
+	if err != nil {
+		return false
+	}
 	return data[0] == 0x6A
 }
 
@@ -128,8 +119,7 @@ func (d *Device) Connected() bool {
 // 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) {
-	data := d.buf[:6]
-	err = legacy.ReadRegister(d.bus, uint8(d.Address), OUTX_L_XL, data)
+	data, err := d.readBytes(OUTX_L_XL, 6)
 	if err != nil {
 		return
 	}
@@ -153,8 +143,7 @@ func (d *Device) ReadAcceleration() (x, y, z int32, err error) {
 // 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) {
-	data := d.buf[:6]
-	err = legacy.ReadRegister(d.bus, uint8(d.Address), OUTX_L_G, data)
+	data, err := d.readBytes(OUTX_L_G, 6)
 	if err != nil {
 		return
 	}
@@ -177,8 +166,7 @@ func (d *Device) ReadRotation() (x, y, z int32, err error) {
 
 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
 func (d *Device) ReadTemperature() (t int32, err error) {
-	data := d.buf[:2]
-	err = legacy.ReadRegister(d.bus, uint8(d.Address), OUT_TEMP_L, data)
+	data, err := d.readBytes(OUT_TEMP_L, 2)
 	if err != nil {
 		return
 	}
@@ -187,3 +175,26 @@ func (d *Device) ReadTemperature() (t int32, err error) {
 	t = 25000 + (int32(int16((int16(data[1])<<8)|int16(data[0])))*125)/32
 	return
 }
+
+func (d *Device) readBytes(reg, size uint8) ([]byte, error) {
+	d.buf[0] = reg
+	err := d.bus.Tx(d.Address, d.buf[0:1], d.buf[1:size+1])
+	if err != nil {
+		return nil, err
+	}
+	return d.buf[1 : size+1], nil
+}
+
+func (d *Device) writeByte(reg, value uint8) error {
+	d.buf[0] = reg
+	d.buf[1] = value
+	return d.bus.Tx(d.Address, d.buf[0:2], nil)
+}
+
+func (d *Device) setBits(reg, bits uint8) error {
+	data, err := d.readBytes(reg, 1)
+	if err != nil {
+		return err
+	}
+	return d.writeByte(reg, (data[0]&^bits)|bits)
+}

max6675/max6675.go

@@ -3,7 +3,6 @@ package max6675
 
 import (
 	"errors"
-	"machine"
 
 	"tinygo.org/x/drivers"
 )
@@ -14,13 +13,13 @@ var ErrThermocoupleOpen = errors.New("thermocouple input open")
 
 type Device struct {
 	bus drivers.SPI
-	cs  machine.Pin
+	cs  drivers.Pin
 }
 
 // Create a new Device to read from a MAX6675 thermocouple.
 // Pins must be configured before use.  Frequency for SPI
 // should be 4.3MHz maximum.
-func NewDevice(bus drivers.SPI, cs machine.Pin) *Device {
+func NewDevice(bus drivers.SPI, cs drivers.Pin) *Device {
 	return &Device{
 		bus: bus,
 		cs:  cs,

max72xx/max72xx.go

@@ -3,31 +3,26 @@
 package max72xx
 
 import (
-	"machine"
-
 	"tinygo.org/x/drivers"
 )
 
 type Device struct {
 	bus drivers.SPI
-	cs  machine.Pin
+	cs  drivers.Pin
 }
 
 // NewDriver creates a new max7219 connection. The SPI wire must already be configured
 // The SPI frequency must not be higher than 10MHz.
 // parameter cs: the datasheet also refers to this pin as "load" pin.
-func NewDevice(bus drivers.SPI, cs machine.Pin) *Device {
+func NewDevice(bus drivers.SPI, cs drivers.Pin) *Device {
 	return &Device{
 		bus: bus,
 		cs:  cs,
 	}
 }
 
-// Configure setups the pins.
+// Configure expects that the pin of the Device has already been configured by the user as output.
 func (driver *Device) Configure() {
-	outPutConfig := machine.PinConfig{Mode: machine.PinOutput}
-
-	driver.cs.Configure(outPutConfig)
 }
 
 // SetScanLimit sets the scan limit. Maximum is 8.

mcp2515/mcp2515.go

@@ -8,7 +8,6 @@ package mcp2515 // import "tinygo.org/x/drivers/mcp2515"
 import (
 	"errors"
 	"fmt"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -17,7 +16,7 @@ import (
 // Device wraps MCP2515 SPI CAN Module.
 type Device struct {
 	spi     SPI
-	cs      machine.Pin
+	cs      drivers.Pin
 	msg     *CANMsg
 	mcpMode byte
 }
@@ -36,7 +35,7 @@ const (
 )
 
 // New returns a new MCP2515 driver. Pass in a fully configured SPI bus.
-func New(b drivers.SPI, csPin machine.Pin) *Device {
+func New(b drivers.SPI, csPin drivers.Pin) *Device {
 	d := &Device{
 		spi: SPI{
 			bus: b,
@@ -50,9 +49,9 @@ func New(b drivers.SPI, csPin machine.Pin) *Device {
 	return d
 }
 
-// Configure sets up the device for communication.
+// Configure sets up the device for communication. It expects the SPI interface to be already
+// configured, and the CS configured as output.
 func (d *Device) Configure() {
-	d.cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
 }
 
 const beginTimeoutValue int = 10

pcd8544/pcd8544.go

@@ -6,7 +6,6 @@ package pcd8544 // import "tinygo.org/x/drivers/pcd8544"
 import (
 	"errors"
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -15,9 +14,9 @@ import (
 // Device wraps an SPI connection.
 type Device struct {
 	bus        drivers.SPI
-	dcPin      machine.Pin
-	rstPin     machine.Pin
-	scePin     machine.Pin
+	dcPin      drivers.Pin
+	rstPin     drivers.Pin
+	scePin     drivers.Pin
 	buffer     []byte
 	width      int16
 	height     int16
@@ -29,8 +28,8 @@ type Config struct {
 	Height int16
 }
 
-// New creates a new PCD8544 connection. The SPI bus must already be configured.
-func New(bus drivers.SPI, dcPin, rstPin, scePin machine.Pin) *Device {
+// New creates a new PCD8544 connection. The SPI bus and pins must already be configured.
+func New(bus drivers.SPI, dcPin, rstPin, scePin drivers.Pin) *Device {
 	return &Device{
 		bus:    bus,
 		dcPin:  dcPin,

pin.go

@@ -0,0 +1,10 @@
+package drivers
+
+// Pin is a digital pin interface. It is notably implemented by the
+// machine.Pin type.
+type Pin interface {
+	Get() bool
+	High()
+	Low()
+	Set(high bool)
+}

shiftregister/shiftregister.go

@@ -2,7 +2,7 @@
 package shiftregister
 
 import (
-	"machine"
+	"tinygo.org/x/drivers"
 )
 
 type NumberBit int8
@@ -16,20 +16,20 @@ const (
 
 // Device holds pin number
 type Device struct {
-	latch, clock, out machine.Pin // IC wiring
+	latch, clock, out drivers.Pin // IC wiring
 	bits              NumberBit   // Pin number
 	mask              uint32      // keep all pins state
 }
 
 // ShiftPin is the implementation of the ShiftPin interface.
-// ShiftPin provide an interface like regular machine.Pin
+// ShiftPin provide an interface like regular drivers.Pin
 type ShiftPin struct {
 	mask uint32  // Bit representing the pin
 	d    *Device // Reference to the register
 }
 
 // New returns a new shift output register device
-func New(Bits NumberBit, Latch, Clock, Out machine.Pin) *Device {
+func New(Bits NumberBit, Latch, Clock, Out drivers.Pin) *Device {
 	return &Device{
 		latch: Latch,
 		clock: Clock,
@@ -38,11 +38,9 @@ func New(Bits NumberBit, Latch, Clock, Out machine.Pin) *Device {
 	}
 }
 
-// Configure set hardware configuration
+// Configure set hardware configuration. Make sure that the pins are already configured
+// as output.
 func (d *Device) Configure() {
-	d.latch.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.clock.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.out.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	d.latch.High()
 }
 

ssd1289/ssd1289.go

@@ -5,8 +5,9 @@ package ssd1289
 
 import (
 	"image/color"
-	"machine"
 	"time"
+
+	"tinygo.org/x/drivers"
 )
 
 type Bus interface {
@@ -14,17 +15,17 @@ type Bus interface {
 }
 
 type Device struct {
-	rs  machine.Pin
-	wr  machine.Pin
-	cs  machine.Pin
-	rst machine.Pin
+	rs  drivers.Pin
+	wr  drivers.Pin
+	cs  drivers.Pin
+	rst drivers.Pin
 	bus Bus
 }
 
 const width = int16(240)
 const height = int16(320)
 
-func New(rs machine.Pin, wr machine.Pin, cs machine.Pin, rst machine.Pin, bus Bus) Device {
+func New(rs drivers.Pin, wr drivers.Pin, cs drivers.Pin, rst drivers.Pin, bus Bus) Device {
 	d := Device{
 		rs:  rs,
 		wr:  wr,
@@ -33,11 +34,6 @@ func New(rs machine.Pin, wr machine.Pin, cs machine.Pin, rst machine.Pin, bus Bu
 		bus: bus,
 	}
 
-	rs.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	wr.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rst.Configure(machine.PinConfig{Mode: machine.PinOutput})
-
 	cs.High()
 	rst.High()
 	wr.High()

ssd1306/ssd1306.go

@@ -6,7 +6,6 @@ package ssd1306 // import "tinygo.org/x/drivers/ssd1306"
 import (
 	"errors"
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -58,9 +57,9 @@ type I2CBus struct {
 
 type SPIBus struct {
 	wire     drivers.SPI
-	dcPin    machine.Pin
-	resetPin machine.Pin
-	csPin    machine.Pin
+	dcPin    drivers.Pin
+	resetPin drivers.Pin
+	csPin    drivers.Pin
 }
 
 type Buser interface {
@@ -81,11 +80,8 @@ func NewI2C(bus drivers.I2C) Device {
 	}
 }
 
-// NewSPI creates a new SSD1306 connection. The SPI wire must already be configured.
-func NewSPI(bus drivers.SPI, dcPin, resetPin, csPin machine.Pin) Device {
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
+// NewSPI creates a new SSD1306 connection. The SPI wire and pins must already be configured.
+func NewSPI(bus drivers.SPI, dcPin, resetPin, csPin drivers.Pin) Device {
 	return Device{
 		bus: &SPIBus{
 			wire:     bus,
@@ -322,7 +318,6 @@ func (b *SPIBus) tx(data []byte, isCommand bool) error {
 
 	if isCommand {
 		b.csPin.High()
-		time.Sleep(1 * time.Millisecond)
 		b.dcPin.Low()
 		b.csPin.Low()
 
@@ -330,7 +325,6 @@ func (b *SPIBus) tx(data []byte, isCommand bool) error {
 		b.csPin.High()
 	} else {
 		b.csPin.High()
-		time.Sleep(1 * time.Millisecond)
 		b.dcPin.High()
 		b.csPin.Low()
 

ssd1331/ssd1331.go

@@ -5,7 +5,6 @@ package ssd1331 // import "tinygo.org/x/drivers/ssd1331"
 
 import (
 	"image/color"
-	"machine"
 
 	"errors"
 	"time"
@@ -19,9 +18,9 @@ type Rotation uint8
 // Device wraps an SPI connection.
 type Device struct {
 	bus         drivers.SPI
-	dcPin       machine.Pin
-	resetPin    machine.Pin
-	csPin       machine.Pin
+	dcPin       drivers.Pin
+	resetPin    drivers.Pin
+	csPin       drivers.Pin
 	width       int16
 	height      int16
 	batchLength int16
@@ -35,11 +34,8 @@ type Config struct {
 	Height int16
 }
 
-// New creates a new SSD1331 connection. The SPI wire must already be configured.
-func New(bus drivers.SPI, resetPin, dcPin, csPin machine.Pin) Device {
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
+// New creates a new SSD1331 connection. The SPI wire and pins must already be configured.
+func New(bus drivers.SPI, resetPin, dcPin, csPin drivers.Pin) Device {
 	return Device{
 		bus:      bus,
 		dcPin:    dcPin,

ssd1351/ssd1351.go

@@ -6,7 +6,6 @@ package ssd1351 // import "tinygo.org/x/drivers/ssd1351"
 import (
 	"errors"
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -20,11 +19,11 @@ var (
 // Device wraps an SPI connection.
 type Device struct {
 	bus          drivers.SPI
-	dcPin        machine.Pin
-	resetPin     machine.Pin
-	csPin        machine.Pin
-	enPin        machine.Pin
-	rwPin        machine.Pin
+	dcPin        drivers.Pin
+	resetPin     drivers.Pin
+	csPin        drivers.Pin
+	enPin        drivers.Pin
+	rwPin        drivers.Pin
 	width        int16
 	height       int16
 	rowOffset    int16
@@ -41,7 +40,7 @@ type Config struct {
 }
 
 // New creates a new SSD1351 connection. The SPI wire must already be configured.
-func New(bus drivers.SPI, resetPin, dcPin, csPin, enPin, rwPin machine.Pin) Device {
+func New(bus drivers.SPI, resetPin, dcPin, csPin, enPin, rwPin drivers.Pin) Device {
 	return Device{
 		bus:      bus,
 		dcPin:    dcPin,
@@ -72,13 +71,6 @@ func (d *Device) Configure(cfg Config) {
 		d.bufferLength = d.height
 	}
 
-	// configure GPIO pins
-	d.dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.enPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.rwPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-
 	// reset the device
 	d.resetPin.High()
 	time.Sleep(100 * time.Millisecond)

st7735/st7735.go

@@ -5,7 +5,6 @@ package st7735 // import "tinygo.org/x/drivers/st7735"
 
 import (
 	"image/color"
-	"machine"
 	"time"
 
 	"errors"
@@ -39,10 +38,10 @@ type Device = DeviceOf[pixel.RGB565BE]
 // formats.
 type DeviceOf[T Color] struct {
 	bus          drivers.SPI
-	dcPin        machine.Pin
-	resetPin     machine.Pin
-	csPin        machine.Pin
-	blPin        machine.Pin
+	dcPin        drivers.Pin
+	resetPin     drivers.Pin
+	csPin        drivers.Pin
+	blPin        drivers.Pin
 	width        int16
 	height       int16
 	columnOffset int16
@@ -65,17 +64,13 @@ type Config struct {
 }
 
 // New creates a new ST7735 connection. The SPI wire must already be configured.
-func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin machine.Pin) Device {
+func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin drivers.Pin) Device {
 	return NewOf[pixel.RGB565BE](bus, resetPin, dcPin, csPin, blPin)
 }
 
 // NewOf creates a new ST7735 connection with a particular pixel format. The SPI
-// wire must already be configured.
-func NewOf[T Color](bus drivers.SPI, resetPin, dcPin, csPin, blPin machine.Pin) DeviceOf[T] {
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	blPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
+// wire and pins must already be configured.
+func NewOf[T Color](bus drivers.SPI, resetPin, dcPin, csPin, blPin drivers.Pin) DeviceOf[T] {
 	return DeviceOf[T]{
 		bus:      bus,
 		dcPin:    dcPin,

st7789/st7789.go

@@ -46,10 +46,10 @@ type Device = DeviceOf[pixel.RGB565BE]
 // formats.
 type DeviceOf[T Color] struct {
 	bus             drivers.SPI
-	dcPin           machine.Pin
-	resetPin        machine.Pin
-	csPin           machine.Pin
-	blPin           machine.Pin
+	dcPin           drivers.Pin
+	resetPin        drivers.Pin
+	csPin           drivers.Pin
+	blPin           drivers.Pin
 	width           int16
 	height          int16
 	columnOffsetCfg int16
@@ -83,17 +83,13 @@ type Config struct {
 }
 
 // New creates a new ST7789 connection. The SPI wire must already be configured.
-func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin machine.Pin) Device {
+func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin drivers.Pin) Device {
 	return NewOf[pixel.RGB565BE](bus, resetPin, dcPin, csPin, blPin)
 }
 
 // NewOf creates a new ST7789 connection with a particular pixel format. The SPI
-// wire must already be configured.
-func NewOf[T Color](bus drivers.SPI, resetPin, dcPin, csPin, blPin machine.Pin) DeviceOf[T] {
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	blPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
+// wire and pins must already be configured.
+func NewOf[T Color](bus drivers.SPI, resetPin, dcPin, csPin, blPin drivers.Pin) DeviceOf[T] {
 	return DeviceOf[T]{
 		bus:      bus,
 		dcPin:    dcPin,

sx127x/sx127x.go

@@ -6,7 +6,6 @@ package sx127x
 
 import (
 	"errors"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -22,7 +21,7 @@ const (
 // Device wraps an SPI connection to a SX127x device.
 type Device struct {
 	spi            drivers.SPI          // SPI bus for module communication
-	rstPin         machine.Pin          // GPIO for reset
+	rstPin         drivers.Pin          // GPIO for reset
 	radioEventChan chan lora.RadioEvent // Channel for Receiving events
 	loraConf       lora.Config          // Current Lora configuration
 	controller     RadioController      // to manage interactions with the radio
@@ -43,7 +42,7 @@ func (d *Device) GetRadioEventChan() chan lora.RadioEvent {
 }
 
 // New creates a new SX127x connection. The SPI bus must already be configured.
-func New(spi drivers.SPI, rstPin machine.Pin) *Device {
+func New(spi drivers.SPI, rstPin drivers.Pin) *Device {
 	k := Device{
 		spi:            spi,
 		rstPin:         rstPin,

tmc2209/uartcomm.go

@@ -57,14 +57,10 @@ func (comm *UARTComm) WriteRegister(register uint8, value uint32, driverIndex ui
 		byte((value >> 16) & 0xFF), // Middle byte
 		byte((value >> 8) & 0xFF),  // Next byte
 		byte(value & 0xFF),         // LSB of value
+		0,                          // CRC
 	}
 
-	// Calculate checksum by XORing all bytes
-	checksum := byte(0)
-	for _, b := range buffer[:7] {
-		checksum ^= b
-	}
-	buffer[7] = checksum // Set checksum byte
+	buffer[7] = CalculateCRC(buffer[:7])
 
 	// Write the data to the TMC2209
 	done := make(chan error, 1)
@@ -86,10 +82,10 @@ func (comm *UARTComm) WriteRegister(register uint8, value uint32, driverIndex ui
 // ReadRegister sends a register read command to the TMC2209 with a timeout.
 func (comm *UARTComm) ReadRegister(register uint8, driverIndex uint8) (uint32, error) {
 	var writeBuffer [4]byte
-	writeBuffer[0] = 0x05                                             // Sync byte
-	writeBuffer[1] = 0x00                                             // Slave address
-	writeBuffer[2] = register & 0x7F                                  // Read command (MSB clear for read)
-	writeBuffer[3] = writeBuffer[0] ^ writeBuffer[1] ^ writeBuffer[2] // Checksum
+	writeBuffer[0] = 0x05            // Sync byte
+	writeBuffer[1] = 0x00            // Slave address
+	writeBuffer[2] = register & 0x7F // Read command (MSB clear for read)
+	writeBuffer[3] = CalculateCRC(writeBuffer[:3])
 
 	// Send the read command
 	done := make(chan []byte, 1)
@@ -103,11 +99,7 @@ func (comm *UARTComm) ReadRegister(register uint8, driverIndex uint8) (uint32, e
 	// Implementing timeout using a 100ms timer
 	select {
 	case readBuffer := <-done:
-		// Validate checksum
-		checksum := byte(0)
-		for i := 0; i < 7; i++ {
-			checksum ^= readBuffer[i]
-		}
+		checksum := CalculateCRC(readBuffer[:7])
 		if checksum != readBuffer[7] {
 			return 0, CustomError("checksum error")
 		}

uc8151/uc8151.go

@@ -8,7 +8,6 @@ package uc8151 // import "tinygo.org/x/drivers/uc8151"
 import (
 	"errors"
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -31,10 +30,10 @@ type Config struct {
 
 type Device struct {
 	bus                      drivers.SPI
-	cs                       machine.Pin
-	dc                       machine.Pin
-	rst                      machine.Pin
-	busy                     machine.Pin
+	cs                       drivers.Pin
+	dc                       drivers.Pin
+	rst                      drivers.Pin
+	busy                     drivers.Pin
 	width                    int16
 	height                   int16
 	buffer                   []uint8
@@ -48,12 +47,9 @@ type Device struct {
 
 type Speed uint8
 
-// New returns a new uc8151 driver. Pass in a fully configured SPI bus.
-func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rstPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	busyPin.Configure(machine.PinConfig{Mode: machine.PinInput})
+// New returns a new uc8151 driver. Pass in a fully configured SPI bus and pins.
+// busyPin should be set and input, the others as outputs.
+func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin drivers.Pin) Device {
 	return Device{
 		bus:  bus,
 		cs:   csPin,

version.go

@@ -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 = "0.30.0"
+const Version = "0.32.0"

waveshare-epd/epd1in54/epd1in54.go

@@ -12,6 +12,8 @@ import (
 	"image/color"
 	"machine"
 	"time"
+
+	"tinygo.org/x/drivers"
 )
 
 type Config struct {
@@ -23,10 +25,10 @@ type Config struct {
 
 type Device struct {
 	bus  *machine.SPI
-	cs   machine.Pin
-	dc   machine.Pin
-	rst  machine.Pin
-	busy machine.Pin
+	cs   drivers.Pin
+	dc   drivers.Pin
+	rst  drivers.Pin
+	busy drivers.Pin
 
 	buffer   []uint8
 	rotation Rotation
@@ -79,7 +81,7 @@ var partialRefresh = [159]uint8{
 }
 
 // New returns a new epd1in54 driver. Pass in a fully configured SPI bus.
-func New(bus *machine.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
+func New(bus *machine.SPI, csPin, dcPin, rstPin, busyPin drivers.Pin) Device {
 	return Device{
 		buffer: make([]uint8, (uint32(Width)*uint32(Height))/8),
 		bus:    bus,
@@ -91,11 +93,6 @@ func New(bus *machine.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
 }
 
 func (d *Device) LDirInit(cfg Config) {
-	d.cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.rst.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.dc.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.busy.Configure(machine.PinConfig{Mode: machine.PinInput})
-
 	d.bus.Configure(machine.SPIConfig{
 		Frequency: 2000000,
 		Mode:      0,
@@ -150,11 +147,6 @@ func (d *Device) LDirInit(cfg Config) {
 }
 
 func (d *Device) HDirInit(cfg Config) {
-	d.cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.rst.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.dc.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.busy.Configure(machine.PinConfig{Mode: machine.PinInput})
-
 	d.bus.Configure(machine.SPIConfig{
 		Frequency: 2000000,
 		Mode:      0,

waveshare-epd/epd2in13/epd2in13.go

@@ -6,7 +6,6 @@ package epd2in13 // import "tinygo.org/x/drivers/waveshare-epd/epd2in13"
 import (
 	"errors"
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -21,10 +20,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           machine.Pin
-	dc           machine.Pin
-	rst          machine.Pin
-	busy         machine.Pin
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	logicalWidth int16
 	width        int16
 	height       int16
@@ -52,12 +51,9 @@ var lutPartialUpdate = [30]uint8{
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 }
 
-// New returns a new epd2in13x driver. Pass in a fully configured SPI bus.
-func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rstPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	busyPin.Configure(machine.PinConfig{Mode: machine.PinInput})
+// New returns a new epd2in13x driver. Pass in a fully configured SPI bus and pins.
+// Busy pin should input, the rest should be output.
+func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin drivers.Pin) Device {
 	return Device{
 		bus:  bus,
 		cs:   csPin,

waveshare-epd/epd2in13x/epd2in13x.go

@@ -6,7 +6,6 @@ package epd2in13x // import "tinygo.org/x/drivers/waveshare-epd/epd2in13x"
 import (
 	"errors"
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -20,10 +19,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           machine.Pin
-	dc           machine.Pin
-	rst          machine.Pin
-	busy         machine.Pin
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	width        int16
 	height       int16
 	buffer       [][]uint8
@@ -32,12 +31,9 @@ type Device struct {
 
 type Color uint8
 
-// New returns a new epd2in13x driver. Pass in a fully configured SPI bus.
-func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rstPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	busyPin.Configure(machine.PinConfig{Mode: machine.PinInput})
+// New returns a new epd2in13x driver. Pass in a fully configured SPI bus and pins.
+// Busy pin should input, the rest should be output.
+func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin drivers.Pin) Device {
 	return Device{
 		bus:  bus,
 		cs:   csPin,

waveshare-epd/epd2in66b/dev.go

@@ -5,7 +5,6 @@ package epd2in66b
 
 import (
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -19,18 +18,18 @@ const (
 const Baudrate = 4_000_000 // 4 MHz
 
 type Config struct {
-	ResetPin      machine.Pin
-	DataPin       machine.Pin
-	ChipSelectPin machine.Pin
-	BusyPin       machine.Pin
+	ResetPin      drivers.Pin
+	DataPin       drivers.Pin
+	ChipSelectPin drivers.Pin
+	BusyPin       drivers.Pin
 }
 
 type Device struct {
 	bus  drivers.SPI
-	cs   machine.Pin
-	dc   machine.Pin
-	rst  machine.Pin
-	busy machine.Pin
+	cs   drivers.Pin
+	dc   drivers.Pin
+	rst  drivers.Pin
+	busy drivers.Pin
 
 	blackBuffer []byte
 	redBuffer   []byte
@@ -50,18 +49,14 @@ func New(bus drivers.SPI) Device {
 	}
 }
 
-// Configure configures the device and its pins.
+// Configure configures the device. Note that pins should already
+// be configured. Busy pin should be input, the rest should be output.
 func (d *Device) Configure(c Config) error {
 	d.cs = c.ChipSelectPin
 	d.dc = c.DataPin
 	d.rst = c.ResetPin
 	d.busy = c.BusyPin
 
-	d.cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.dc.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.rst.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	d.busy.Configure(machine.PinConfig{Mode: machine.PinInput})
-
 	return nil
 }
 

waveshare-epd/epd2in9/epd2in9.go

@@ -13,7 +13,6 @@ package epd2in9 // import "tinygo.org/x/drivers/waveshare-epd/epd2in9"
 
 import (
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -28,10 +27,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           machine.Pin
-	dc           machine.Pin
-	rst          machine.Pin
-	busy         machine.Pin
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	logicalWidth int16
 	width        int16
 	height       int16
@@ -60,12 +59,9 @@ var lutPartialUpdate = [30]uint8{
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 }
 
-// New returns a new epd2in9 driver. Pass in a fully configured SPI bus.
-func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rstPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	busyPin.Configure(machine.PinConfig{Mode: machine.PinInput})
+// New returns a new epd2in9 driver. Pass in a fully configured SPI bus and pins.
+// Busy pin should input, the rest should be output.
+func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin drivers.Pin) Device {
 	return Device{
 		bus:  bus,
 		cs:   csPin,

waveshare-epd/epd4in2/epd4in2.go

@@ -10,7 +10,6 @@ package epd4in2
 
 import (
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -25,10 +24,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           machine.Pin
-	dc           machine.Pin
-	rst          machine.Pin
-	busy         machine.Pin
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	logicalWidth int16
 	width        int16
 	height       int16
@@ -39,12 +38,9 @@ type Device struct {
 
 type Rotation uint8
 
-// New returns a new epd4in2 driver. Pass in a fully configured SPI bus.
-func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin machine.Pin) Device {
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rstPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	busyPin.Configure(machine.PinConfig{Mode: machine.PinInput})
+// New returns a new epd4in2 driver. Pass in a fully configured SPI bus and pins.
+// Busy pin should input, the rest should be output.
+func New(bus drivers.SPI, csPin, dcPin, rstPin, busyPin drivers.Pin) Device {
 	return Device{
 		bus:  bus,
 		cs:   csPin,

ws2812/ws2812-asm_cortexm.go

@@ -1320,6 +1320,465 @@ void ws2812_writeByte168(char c, uint32_t *portSet, uint32_t *portClear, uint32_
 	  [maskClear]"r"(maskClear),
 	  [portClear]"m"(*portClear));
 }
+
+__attribute__((always_inline))
+void ws2812_writeByte200(char c, uint32_t *portSet, uint32_t *portClear, uint32_t maskSet, uint32_t maskClear) {
+	// Timings:
+	// T0H: 70 - 72 cycles or 350.0ns - 360.0ns
+	// T1H: 210 - 212 cycles or 1050.0ns - 1060.0ns
+	// TLD: 230 -    cycles or 1150.0ns -
+	uint32_t value = (uint32_t)c << 24;
+	char i = 8;
+	__asm__ __volatile__(
+		"1: @ send_bit\n"
+		"\t  str   %[maskSet], %[portSet]     @ [2]   T0H and T0L start here\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  lsls  %[value], #1               @ [1]\n"
+		"\t  bcs.n 2f                         @ [1/3] skip_store\n"
+		"\t  str   %[maskClear], %[portClear] @ [2]   T0H -> T0L transition\n"
+		"\t2: @ skip_store\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  str   %[maskClear], %[portClear] @ [2]   T1H -> T1L transition\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  nop\n"
+		"\t  subs  %[i], #1                   @ [1]\n"
+		"\t  beq.n 3f                         @ [1/3] end\n"
+		"\t  b     1b                         @ [1/3] send_bit\n"
+		"\t3: @ end\n"
+	: [value]"+r"(value),
+	  [i]"+r"(i)
+	: [maskSet]"r"(maskSet),
+	  [portSet]"m"(*portSet),
+	  [maskClear]"r"(maskClear),
+	  [portClear]"m"(*portClear));
+}
 */
 import "C"
 
@@ -1382,3 +1841,13 @@ func (d Device) writeByte168(c byte) {
 
 	interrupt.Restore(mask)
 }
+
+func (d Device) writeByte200(c byte) {
+	portSet, maskSet := d.Pin.PortMaskSet()
+	portClear, maskClear := d.Pin.PortMaskClear()
+
+	mask := interrupt.Disable()
+	C.ws2812_writeByte200(C.char(c), (*C.uint32_t)(unsafe.Pointer(portSet)), (*C.uint32_t)(unsafe.Pointer(portClear)), C.uint32_t(maskSet), C.uint32_t(maskClear))
+
+	interrupt.Restore(mask)
+}

ws2812/ws2812.go

@@ -1,7 +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 64 120 125 168
+//go:generate go run gen-ws2812.go -arch=cortexm 16 48 64 120 125 168 200
 //go:generate go run gen-ws2812.go -arch=tinygoriscv 160 320
 
 import (

ws2812/ws2812_cortexm.go

@@ -28,12 +28,15 @@ func (d Device) WriteByte(c byte) error {
 	case 120_000_000: // 120MHz
 		d.writeByte120(c)
 		return nil
-	case 125_000_000: // 125 MHz e.g. rp2040
+	case 125_000_000: // 125 MHz e.g. rp2040 originally
 		d.writeByte125(c)
 		return nil
 	case 168_000_000: // 168MHz, e.g. stm32f405
 		d.writeByte168(c)
 		return nil
+	case 200_000_000: // 200MHz, e.g. rp2040 starting with TinyGo v0.37
+		d.writeByte200(c)
+		return nil
 	default:
 		return errUnknownClockSpeed
 	}