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

@@ -7,8 +7,6 @@ import (
 	"image/color"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 const (
@@ -38,11 +36,8 @@ 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 pin.Output, delay uint32) *Device {
-	return New(&bbSPI{SCK: sckPin.Set, SDO: sdoPin.Set, Delay: delay, configurePins: func() {
-		legacy.ConfigurePinOut(sckPin)
-		legacy.ConfigurePinOut(sdoPin)
-	}})
+func NewSoftwareSPI(sckPin, sdoPin drivers.Pin, delay uint32) *Device {
+	return New(&bbSPI{SCK: sckPin, SDO: sdoPin, Delay: delay})
 }
 
 // WriteColors writes the given RGBA color slice out using the APA102 protocol.

apa102/softspi.go

@@ -2,7 +2,6 @@ package apa102
 
 import (
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
 )
 
 // bbSPI is a dumb bit-bang implementation of SPI protocol that is hardcoded
@@ -11,18 +10,14 @@ import (
 // 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           drivers.PinOutput
-	SDO           drivers.PinOutput
-	Delay         uint32
-	configurePins func()
+	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() {
-	if s.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	s.configurePins()
 	s.SCK.Low()
 	s.SDO.Low()
 	if s.Delay == 0 {

bmi160/bmi160.go

@@ -4,45 +4,34 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 // DeviceSPI is the SPI interface to a BMI160 accelerometer/gyroscope. There is
 // also an I2C interface, but it is not yet supported.
 type DeviceSPI struct {
 	// Chip select pin
-	csb drivers.PinOutput
+	CSB drivers.Pin
 
 	buf [7]byte
 
 	// SPI bus (requires chip select to be usable).
-	bus           drivers.SPI
-	configurePins func()
+	Bus drivers.SPI
 }
 
 // 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 pin.Output, spi drivers.SPI) *DeviceSPI {
+func NewSPI(csb drivers.Pin, spi drivers.SPI) *DeviceSPI {
 	return &DeviceSPI{
-		csb: csb.Set, // chip select
-		bus: spi,
-		configurePins: func() {
-			legacy.ConfigurePinOut(csb)
-		},
+		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 {
-	if d.configurePins == nil {
-		return legacy.ErrConfigBeforeInstantiated
-	}
-	d.configurePins()
-	d.csb.High()
+	d.CSB.High()
 
 	// The datasheet recommends doing a register read from address 0x7F to get
 	// SPI communication going:
@@ -94,9 +83,9 @@ func (d *DeviceSPI) ReadTemperature() (temperature int32, err error) {
 	data[0] = 0x80 | reg_TEMPERATURE_0
 	data[1] = 0
 	data[2] = 0
-	d.csb.Low()
-	err = d.bus.Tx(data, data)
-	d.csb.High()
+	d.CSB.Low()
+	err = d.Bus.Tx(data, data)
+	d.CSB.High()
 	if err != nil {
 		return
 	}
@@ -131,9 +120,9 @@ func (d *DeviceSPI) ReadAcceleration() (x int32, y int32, z int32, err error) {
 	for i := 1; i < len(data); i++ {
 		data[i] = 0
 	}
-	d.csb.Low()
-	err = d.bus.Tx(data, data)
-	d.csb.High()
+	d.CSB.Low()
+	err = d.Bus.Tx(data, data)
+	d.CSB.High()
 	if err != nil {
 		return
 	}
@@ -161,9 +150,9 @@ func (d *DeviceSPI) ReadRotation() (x int32, y int32, z int32, err error) {
 	for i := 1; i < len(data); i++ {
 		data[i] = 0
 	}
-	d.csb.Low()
-	err = d.bus.Tx(data, data)
-	d.csb.High()
+	d.CSB.Low()
+	err = d.Bus.Tx(data, data)
+	d.CSB.High()
 	if err != nil {
 		return
 	}
@@ -209,9 +198,9 @@ func (d *DeviceSPI) readRegister(address uint8) uint8 {
 	data := d.buf[:2]
 	data[0] = 0x80 | address
 	data[1] = 0
-	d.csb.Low()
-	d.bus.Tx(data, data)
-	d.csb.High()
+	d.CSB.Low()
+	d.Bus.Tx(data, data)
+	d.CSB.High()
 	return data[1]
 }
 
@@ -225,7 +214,7 @@ func (d *DeviceSPI) writeRegister(address, data uint8) {
 	buf[0] = address
 	buf[1] = data
 
-	d.csb.Low()
-	d.bus.Tx(buf, buf)
-	d.csb.High()
+	d.CSB.Low()
+	d.Bus.Tx(buf, buf)
+	d.CSB.High()
 }

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

@@ -5,20 +5,19 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 // Device wraps a GPIO connection to a buzzer.
 type Device struct {
-	pin  drivers.PinOutput
+	pin  drivers.Pin
 	High bool
 	BPM  float64
 }
 
 // New returns a new buzzer driver given which pin to use
-func New(pin pin.Output) Device {
+func New(pin drivers.Pin) Device {
 	return Device{
-		pin:  pin.Set,
+		pin:  pin,
 		High: false,
 		BPM:  96.0,
 	}
@@ -26,14 +25,14 @@ func New(pin pin.Output) Device {
 
 // On sets the buzzer to a high state.
 func (l *Device) On() (err error) {
-	l.pin.High()
+	l.pin.Set(true)
 	l.High = true
 	return
 }
 
 // Off sets the buzzer to a low state.
 func (l *Device) Off() (err error) {
-	l.pin.Low()
+	l.pin.Set(false)
 	l.High = false
 	return
 }

easystepper/easystepper.go

@@ -2,6 +2,7 @@
 package easystepper // import "tinygo.org/x/drivers/easystepper"
 
 import (
+	"errors"
 	"time"
 
 	"tinygo.org/x/drivers"
@@ -30,10 +31,28 @@ 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 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'
+	RPM uint
+	// Mode determines the coil sequence used to perform a single step
+	Mode StepMode
+}
+
+// DualDeviceConfig contains the configuration data for a dual easystepper driver
+type DualDeviceConfig struct {
+	DeviceConfig
+	// Pin5 ... Pin8 determines the pins to configure and use for the second device
+	Pin5, Pin6, Pin7, Pin8 drivers.Pin
+}
+
 // Device holds the pins and the delay between steps
 type Device struct {
-	pins       [4]drivers.PinOutput
-	config     func()
+	pins       [4]drivers.Pin
 	stepDelay  time.Duration
 	stepNumber uint8
 	stepMode   StepMode
@@ -44,6 +63,49 @@ type DualDevice struct {
 	devices [2]*Device
 }
 
+// New returns a new single easystepper driver given a DeviceConfig
+func New(config DeviceConfig) (*Device, error) {
+	if config.StepCount == 0 || config.RPM == 0 {
+		return nil, errors.New("config.StepCount and config.RPM must be > 0")
+	}
+	return &Device{
+		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 does nothing, as it assumes that the pins of the Device have already
+// been configured by the user as outputs.
+func (d *Device) Configure() {
+}
+
+// NewDual returns a new dual easystepper driver given 8 pins, number of steps and rpm
+func NewDual(config DualDeviceConfig) (*DualDevice, error) {
+	// Create the first device
+	dev1, err := New(config.DeviceConfig)
+	if err != nil {
+		return nil, err
+	}
+	// Create the second device
+	config.DeviceConfig.Pin1 = config.Pin5
+	config.DeviceConfig.Pin2 = config.Pin6
+	config.DeviceConfig.Pin3 = config.Pin7
+	config.DeviceConfig.Pin4 = config.Pin8
+	dev2, err := New(config.DeviceConfig)
+	if err != nil {
+		return nil, err
+	}
+	// Return composite dual device
+	return &DualDevice{devices: [2]*Device{dev1, dev2}}, nil
+}
+
+// Configure configures the pins of the DualDevice
+func (d *DualDevice) Configure() {
+	d.devices[0].Configure()
+	d.devices[1].Configure()
+}
+
 // Move rotates the motor the number of given steps
 // (negative steps will rotate it the opposite direction)
 func (d *Device) Move(steps int32) {

easystepper/easystepper_go.go

@@ -1,26 +0,0 @@
-package easystepper
-
-import (
-	"errors"
-	"time"
-
-	"tinygo.org/x/drivers"
-)
-
-func NewCrossPlatform(stepcount, rpm uint, mode StepMode, pins [4]drivers.PinOutput) (*Device, error) {
-	if stepcount == 0 || rpm == 0 {
-		return nil, errors.New("zero rpm and/or stepcount")
-	}
-	for i := range pins {
-		if pins[i] == nil {
-			return nil, errors.New("nil pin")
-		}
-	}
-	d := &Device{
-		pins:      pins,
-		stepDelay: time.Second * 60 / time.Duration((stepcount * rpm)),
-		stepMode:  mode,
-		config:    func() {},
-	}
-	return d, nil
-}

easystepper/easystepper_tinygo.go

@@ -1,83 +0,0 @@
-//go:build baremetal
-
-package easystepper
-
-import (
-	"errors"
-	"machine"
-	"time"
-
-	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-)
-
-// New returns a new single easystepper driver given a DeviceConfig
-func New(config DeviceConfig) (*Device, error) {
-	if config.StepCount == 0 || config.RPM == 0 {
-		return nil, errors.New("config.StepCount and config.RPM must be > 0")
-	}
-	return &Device{
-		pins:      [4]drivers.PinOutput{config.Pin1.Set, config.Pin2.Set, config.Pin3.Set, config.Pin4.Set},
-		stepDelay: time.Second * 60 / time.Duration((config.StepCount * config.RPM)),
-		stepMode:  config.Mode,
-		config: func() {
-			legacy.ConfigurePinOut(config.Pin1)
-			legacy.ConfigurePinOut(config.Pin2)
-			legacy.ConfigurePinOut(config.Pin3)
-			legacy.ConfigurePinOut(config.Pin4)
-		},
-	}, nil
-}
-
-// Configure configures the pins of the Device
-func (d *Device) Configure() {
-	if d.config == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	d.config()
-}
-
-// Configure configures the pins of the DualDevice
-func (d *DualDevice) Configure() {
-	d.devices[0].Configure()
-	d.devices[1].Configure()
-}
-
-// NewDual returns a new dual easystepper driver given 8 pins, number of steps and rpm
-func NewDual(config DualDeviceConfig) (*DualDevice, error) {
-	// Create the first device
-	dev1, err := New(config.DeviceConfig)
-	if err != nil {
-		return nil, err
-	}
-	// Create the second device
-	config.DeviceConfig.Pin1 = config.Pin5
-	config.DeviceConfig.Pin2 = config.Pin6
-	config.DeviceConfig.Pin3 = config.Pin7
-	config.DeviceConfig.Pin4 = config.Pin8
-	dev2, err := New(config.DeviceConfig)
-	if err != nil {
-		return nil, err
-	}
-	// Return composite dual device
-	return &DualDevice{devices: [2]*Device{dev1, dev2}}, nil
-}
-
-// 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
-	// 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'
-	RPM uint
-	// Mode determines the coil sequence used to perform a single step
-	Mode StepMode
-}
-
-// DualDeviceConfig contains the configuration data for a dual easystepper driver
-type DualDeviceConfig struct {
-	DeviceConfig
-	// Pin5 ... Pin8 determines the pins to configure and use for the second device
-	Pin5, Pin6, Pin7, Pin8 machine.Pin
-}

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

@@ -7,27 +7,24 @@ package ft6336
 import (
 	"tinygo.org/x/drivers"
 	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 	"tinygo.org/x/drivers/touch"
 )
 
 // Device wraps FT6336 I2C Self-Capacitive touch
 type Device struct {
-	bus           drivers.I2C
-	buf           []byte
-	Address       uint8
-	configurePins func()
+	bus     drivers.I2C
+	buf     []byte
+	Address uint8
+	intPin  drivers.Pin
 }
 
 // New returns FT6336 device for the provided I2C bus using default address.
-func New(i2c drivers.I2C, intPin pin.Input) *Device {
+func New(i2c drivers.I2C, intPin drivers.Pin) *Device {
 	return &Device{
 		bus:     i2c,
 		buf:     make([]byte, 11),
 		Address: Address,
-		configurePins: func() {
-			legacy.ConfigurePinInputPulldown(intPin)
-		},
+		intPin:  intPin,
 	}
 }
 
@@ -35,13 +32,10 @@ func New(i2c drivers.I2C, intPin pin.Input) *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 {
-	if d.configurePins == nil {
-		return legacy.ErrConfigBeforeInstantiated
-	}
 	d.write1Byte(0xA4, 0x00)
-	d.configurePins()
 	return nil
 }
 

gc9a01/gc9a01.go

@@ -10,8 +10,6 @@ import (
 	"errors"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 // Rotation controls the rotation used by the display.
@@ -23,10 +21,10 @@ type FrameRate uint8
 // Device wraps an SPI connection.
 type Device struct {
 	bus             drivers.SPI
-	dcPin           drivers.PinOutput
-	resetPin        drivers.PinOutput
-	csPin           drivers.PinOutput
-	blPin           drivers.PinOutput
+	dcPin           drivers.Pin
+	resetPin        drivers.Pin
+	csPin           drivers.Pin
+	blPin           drivers.Pin
 	width           int16
 	height          int16
 	columnOffsetCfg int16
@@ -52,18 +50,15 @@ 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 pin.Output) Device {
-	legacy.ConfigurePinOut(resetPin)
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(blPin)
+// 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.Set,
-		dcPin:    dcPin.Set,
-		csPin:    csPin.Set,
-		blPin:    blPin.Set,
+		resetPin: resetPin,
+		dcPin:    dcPin,
+		csPin:    csPin,
+		blPin:    blPin,
 	}
 }
 
@@ -227,7 +222,7 @@ func (d *Device) Data(data uint8) {
 
 // Tx sends data to the display
 func (d *Device) Tx(data []byte, isCommand bool) {
-	d.dcPin(!isCommand)
+	d.dcPin.Set(!isCommand)
 	d.bus.Tx(data, nil)
 }
 

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

@@ -8,37 +8,28 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 const TIMEOUT = 23324 // max sensing distance (4m)
 
 // Device holds the pins
 type Device struct {
-	trigger       drivers.PinOutput
-	echo          drivers.PinInput
-	configurePins func()
+	trigger drivers.Pin
+	echo    drivers.Pin
 }
 
 // New returns a new ultrasonic driver given 2 pins
-func New(trigger pin.Output, echo pin.Input) Device {
+func New(trigger, echo drivers.Pin) Device {
 	return Device{
-		trigger: trigger.Set,
-		echo:    echo.Get,
-		configurePins: func() {
-			legacy.ConfigurePinOut(trigger)
-			legacy.ConfigurePinInput(echo)
-		},
+		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() {
-	if d.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	d.configurePins()
 }
 
 // ReadDistance returns the distance of the object in mm
@@ -62,7 +53,7 @@ func (d *Device) ReadPulse() int32 {
 	d.trigger.Low()
 	i := uint8(0)
 	for {
-		if d.echo() {
+		if d.echo.Get() {
 			t = time.Now()
 			break
 		}
@@ -76,7 +67,7 @@ func (d *Device) ReadPulse() int32 {
 	}
 	i = 0
 	for {
-		if !d.echo() {
+		if !d.echo.Get() {
 			return int32(time.Since(t).Microseconds())
 		}
 		i++

hd44780/hd44780.go

@@ -210,7 +210,7 @@ func (d *Device) SendCommand(command byte) {
 	d.bus.SetCommandMode(true)
 	d.bus.Write([]byte{command})
 
-	for d.isBusy(command == DISPLAY_CLEAR || command == CURSOR_HOME) {
+	for d.busy(command == DISPLAY_CLEAR || command == CURSOR_HOME) {
 	}
 }
 
@@ -219,7 +219,7 @@ func (d *Device) sendData(data byte) {
 	d.bus.SetCommandMode(false)
 	d.bus.Write([]byte{data})
 
-	for d.isBusy(false) {
+	for d.busy(false) {
 	}
 }
 
@@ -231,9 +231,9 @@ func (d *Device) CreateCharacter(cgramAddr uint8, data []byte) {
 	}
 }
 
-// isBusy returns true when hd447890 is isBusy
+// busy returns true when hd447890 is busy
 // or after the timeout specified
-func (d *Device) isBusy(longDelay bool) bool {
+func (d *Device) busy(longDelay bool) bool {
 	if d.bus.WriteOnly() {
 		// Can't read busy flag if write only, so sleep a bit then return
 		if longDelay {
@@ -261,7 +261,7 @@ func (d *Device) isBusy(longDelay bool) bool {
 
 // Busy returns true when hd447890 is busy
 func (d *Device) Busy() bool {
-	return d.isBusy(false)
+	return d.busy(false)
 }
 
 // Size returns the current size of the display.

internal/legacy/pinhal.go

@@ -1,54 +0,0 @@
-package legacy
-
-import (
-	"errors"
-
-	"tinygo.org/x/drivers/internal/pin"
-)
-
-// ConfigurePinOut is a legacy function used to configure pins as outputs.
-//
-// Deprecated: Do not configure pins in drivers.
-// This is a legacy feature and should only be used by drivers that
-// previously configured pins in initialization to avoid breaking users.
-func ConfigurePinOut(po pin.Output) {
-	configurePinOut(po)
-}
-
-// ConfigurePinInput is a legacy function used to configure pins as inputs.
-//
-// Deprecated: Do not configure pins in drivers.
-// This is a legacy feature and should only be used by drivers that
-// previously configured pins in initialization to avoid breaking users.
-func ConfigurePinInputPulldown(pi pin.Input) {
-	configurePinInputPulldown(pi)
-}
-
-// ConfigurePinInput is a legacy function used to configure pins as inputs.
-//
-// Deprecated: Do not configure pins in drivers.
-// This is a legacy feature and should only be used by drivers that
-// previously configured pins in initialization to avoid breaking users.
-func ConfigurePinInput(pi pin.Input) {
-	configurePinInput(pi)
-}
-
-// ConfigurePinInput is a legacy function used to configure pins as inputs.
-//
-// Deprecated: Do not configure pins in drivers.
-// This is a legacy feature and should only be used by drivers that
-// previously configured pins in initialization to avoid breaking users.
-func ConfigurePinInputPullup(pi pin.Input) {
-	configurePinInputPullup(pi)
-}
-
-// PinIsNoPin returns true if the argument is a machine.Pin type and is the machine.NoPin predeclared type.
-//
-// Deprecated: Drivers do not require pin knowledge from now on.
-func PinIsNoPin(pin any) bool {
-	return pinIsNoPin(pin)
-}
-
-var (
-	ErrConfigBeforeInstantiated = errors.New("device must be instantiated with New before calling Configure method")
-)

internal/legacy/pinhal_go.go

@@ -1,11 +0,0 @@
-//go:build !baremetal
-
-package legacy
-
-import "tinygo.org/x/drivers/internal/pin"
-
-func configurePinOut(p pin.Output)          {}
-func configurePinInput(p pin.Input)         {}
-func configurePinInputPulldown(p pin.Input) {}
-func configurePinInputPullup(p pin.Input)   {}
-func pinIsNoPin(a any) bool                 { return false }

internal/legacy/pinhal_nopulls.go

@@ -1,10 +0,0 @@
-//go:build baremetal && fe310
-
-package legacy
-
-import "machine"
-
-const (
-	pulldown = machine.PinInput
-	pullup   = machine.PinInput
-)

internal/legacy/pinhal_pulls.go

@@ -1,13 +0,0 @@
-//go:build baremetal && !fe310
-
-package legacy
-
-import "machine"
-
-// If you are getting a build error here you then we missed adding
-// your CPU build tag to the list of CPUs that do not have pulldown/pullups.
-// Add it above and in pinhal_nopulls! You should also add a smoketest for it :)
-const (
-	pulldown = machine.PinInputPulldown
-	pullup   = machine.PinInputPullup
-)

internal/legacy/pinhal_tinygo.go

@@ -1,37 +0,0 @@
-//go:build baremetal
-
-package legacy
-
-import (
-	"machine"
-
-	"tinygo.org/x/drivers/internal/pin"
-)
-
-func configurePinOut(po pin.Output) {
-	configurePin(po, machine.PinOutput)
-}
-
-func configurePinInputPulldown(pi pin.Input) {
-	configurePin(pi, pulldown) // some chips do not have pull down, in which case pulldown==machine.PinInput.
-}
-
-func configurePinInput(pi pin.Input) {
-	configurePin(pi, machine.PinInput)
-}
-
-func configurePinInputPullup(pi pin.Input) {
-	configurePin(pi, pullup) // some chips do not have pull up, in which case pullup==machine.PinInput.
-}
-
-func pinIsNoPin(a any) bool {
-	p, ok := a.(machine.Pin)
-	return ok && p == machine.NoPin
-}
-
-func configurePin(p any, mode machine.PinMode) {
-	machinePin, ok := p.(machine.Pin)
-	if ok {
-		machinePin.Configure(machine.PinConfig{Mode: mode})
-	}
-}

internal/pin/pin.go

@@ -1,23 +0,0 @@
-package pin
-
-import "tinygo.org/x/drivers"
-
-// Here to aid relevant documentation links of [drivers.PinOutput] and [drivers.PinInput].
-var _ drivers.PinOutput
-
-// Output represents a pin hardware abstraction layer for a pin that can output a digital signal.
-//
-// This is an alternative to [drivers.PinOutput] abstraction which is a function type and has
-// not been standardized as of yet as a standard HAL in the drivers package,
-// [discussion ongoing here].
-//
-// [discussion ongoing here]: https://github.com/orgs/tinygo-org/discussions/5043
-type Output interface {
-	Set(level bool)
-}
-
-// Input represents a pin hardware abstraction layer.
-// See [Output] for more information on why this type exists separate to drivers.
-type Input interface {
-	Get() (level bool)
-}

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

@@ -5,7 +5,6 @@ import (
 	"errors"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 // ErrThermocoupleOpen is returned when the thermocouple input is open.
@@ -14,16 +13,16 @@ var ErrThermocoupleOpen = errors.New("thermocouple input open")
 
 type Device struct {
 	bus drivers.SPI
-	cs  drivers.PinOutput
+	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 pin.Output) *Device {
+func NewDevice(bus drivers.SPI, cs drivers.Pin) *Device {
 	return &Device{
 		bus: bus,
-		cs:  cs.Set,
+		cs:  cs,
 	}
 }
 

max72xx/max72xx.go

@@ -4,35 +4,25 @@ package max72xx
 
 import (
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type Device struct {
-	bus           drivers.SPI
-	cs            drivers.PinOutput
-	configurePins func()
+	bus drivers.SPI
+	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 pin.Output) *Device {
+func NewDevice(bus drivers.SPI, cs drivers.Pin) *Device {
 	return &Device{
 		bus: bus,
-		cs:  cs.Set,
-		configurePins: func() {
-			legacy.ConfigurePinOut(cs)
-		},
+		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() {
-	if driver.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	driver.configurePins()
 }
 
 // SetScanLimit sets the scan limit. Maximum is 8.

mcp2515/mcp2515.go

@@ -11,17 +11,14 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 // Device wraps MCP2515 SPI CAN Module.
 type Device struct {
-	spi           SPI
-	cs            drivers.PinOutput
-	msg           *CANMsg
-	mcpMode       byte
-	configurePins func()
+	spi     SPI
+	cs      drivers.Pin
+	msg     *CANMsg
+	mcpMode byte
 }
 
 // CANMsg stores CAN message fields.
@@ -38,29 +35,23 @@ const (
 )
 
 // New returns a new MCP2515 driver. Pass in a fully configured SPI bus.
-func New(b drivers.SPI, csPin pin.Output) *Device {
+func New(b drivers.SPI, csPin drivers.Pin) *Device {
 	d := &Device{
 		spi: SPI{
 			bus: b,
 			tx:  make([]byte, 0, bufferSize),
 			rx:  make([]byte, 0, bufferSize),
 		},
-		cs:  csPin.Set,
+		cs:  csPin,
 		msg: &CANMsg{},
-		configurePins: func() {
-			legacy.ConfigurePinOut(csPin)
-		},
 	}
 
 	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() {
-	if d.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	d.configurePins()
 }
 
 const beginTimeoutValue int = 10

onewire/onewire.go

@@ -5,9 +5,8 @@ package onewire // import "tinygo.org/x/drivers/onewire"
 
 import (
 	"errors"
+	"machine"
 	"time"
-
-	"tinygo.org/x/drivers"
 )
 
 // OneWire ROM commands
@@ -20,8 +19,7 @@ const (
 
 // Device wraps a connection to an 1-Wire devices.
 type Device struct {
-	set drivers.PinOutput
-	get drivers.PinInput
+	p machine.Pin
 }
 
 // Config wraps a configuration to an 1-Wire devices.
@@ -34,30 +32,24 @@ var (
 	errReadAddress    = errors.New("Error: OneWire. Read address error: CRC mismatch.")
 )
 
-// NewFromFuncs expects pin setter and getter for DQ line. Ideally this driver should receive
-// a one-wire bus HAL abstraction, but I was asked to show how this could be done using pin HAL so here goes.
-func NewFromFuncs(getPinLevel drivers.PinInput, setPinLevel drivers.PinOutput) *Device {
-	return &Device{
-		set: setPinLevel,
-		get: getPinLevel,
+// New creates a new GPIO 1-Wire connection.
+// The pin must be pulled up to the VCC via a resistor greater than 500 ohms (default 4.7k).
+func New(p machine.Pin) Device {
+	return Device{
+		p: p,
 	}
 }
 
 // Configure initializes the protocol.
 func (d *Device) Configure(config Config) {}
 
-// By setting the pin value one should configure as output and also expect a more
-// consistent behaviour across all tinygo hosts by pulling DQ line low consistently. Win-win.
-func (d *Device) cfgOut() { d.set.Low() }
-func (d *Device) cfgIn()  { d.get() }
-
 // Reset pull DQ line low, then up.
 func (d Device) Reset() error {
-	d.cfgOut()
+	d.p.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	time.Sleep(480 * time.Microsecond)
-	d.cfgIn()
+	d.p.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
 	time.Sleep(70 * time.Microsecond)
-	precence := d.get()
+	precence := d.p.Get()
 	time.Sleep(410 * time.Microsecond)
 	if precence {
 		return errNoPresence
@@ -67,14 +59,14 @@ func (d Device) Reset() error {
 
 // WriteBit transmits a bit to 1-Wire bus.
 func (d Device) WriteBit(data uint8) {
-	d.cfgOut()
+	d.p.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	if data&1 == 1 { // Send '1'
 		time.Sleep(5 * time.Microsecond)
-		d.cfgIn()
+		d.p.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
 		time.Sleep(60 * time.Microsecond)
 	} else { // Send '0'
 		time.Sleep(60 * time.Microsecond)
-		d.cfgIn()
+		d.p.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
 		time.Sleep(5 * time.Microsecond)
 	}
 }
@@ -89,11 +81,11 @@ func (d Device) Write(data uint8) {
 
 // ReadBit receives a bit from 1-Wire bus.
 func (d Device) ReadBit() (data uint8) {
-	d.cfgOut()
+	d.p.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	time.Sleep(3 * time.Microsecond)
-	d.cfgIn()
+	d.p.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
 	time.Sleep(8 * time.Microsecond)
-	if d.get() {
+	if d.p.Get() {
 		data = 1
 	}
 	time.Sleep(60 * time.Microsecond)

onewire/onewire_tinygo.go

@@ -1,29 +0,0 @@
-package onewire
-
-import (
-	"machine"
-
-	"tinygo.org/x/drivers/internal/legacy"
-)
-
-// New creates a new GPIO 1-Wire connection.
-// The pin must be pulled up to the VCC via a resistor greater than 500 ohms (default 4.7k).
-func New(p machine.Pin) Device {
-	isOut := false
-	return Device{
-		set: func(level bool) {
-			if !isOut {
-				legacy.ConfigurePinOut(p)
-				isOut = true
-			}
-			p.Set(level)
-		},
-		get: func() (level bool) {
-			if isOut {
-				legacy.ConfigurePinInputPullup(p)
-				isOut = false
-			}
-			return p.Get()
-		},
-	}
-}

pcd8544/pcd8544.go

@@ -9,15 +9,14 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 // Device wraps an SPI connection.
 type Device struct {
 	bus        drivers.SPI
-	dcPin      drivers.PinOutput
-	rstPin     drivers.PinOutput
-	scePin     drivers.PinOutput
+	dcPin      drivers.Pin
+	rstPin     drivers.Pin
+	scePin     drivers.Pin
 	buffer     []byte
 	width      int16
 	height     int16
@@ -29,13 +28,13 @@ 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 pin.Output) *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.Set,
-		rstPin: rstPin.Set,
-		scePin: scePin.Set,
+		dcPin:  dcPin,
+		rstPin: rstPin,
+		scePin: scePin,
 	}
 }
 

pin.go

@@ -1,29 +1,10 @@
 package drivers
 
-// PinOutput is hardware abstraction for a pin which outputs a
-// digital signal (high or low level).
-//
-//	// Code conversion demo: from machine.Pin to drivers.PinOutput
-//	led := machine.LED
-//	led.Configure(machine.PinConfig{Mode: machine.PinOutput})
-//	var pin drivers.PinOutput = led.Set // Going from a machine.Pin to a drivers.PinOutput
-type PinOutput func(level bool)
-
-// High sets the underlying pin's level to high. This is equivalent to calling PinOutput(true).
-func (po PinOutput) High() {
-	po(true)
+// 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)
 }
-
-// Low sets the underlying pin's level to low. This is equivalent to calling PinOutput(false).
-func (po PinOutput) Low() {
-	po(false)
-}
-
-// PinInput is hardware abstraction for a pin which receives a
-// digital signal and reads it (high or low level).
-//
-//	// Code conversion demo: from machine.Pin to drivers.PinInput
-//	input := machine.LED
-//	input.Configure(machine.PinConfig{Mode: machine.PinInputPulldown}) // or use machine.PinInputPullup or machine.PinInput
-//	var pin drivers.PinInput = input.Get // Going from a machine.Pin to a drivers.PinInput
-type PinInput func() (level bool)

shiftregister/shiftregister.go

@@ -3,8 +3,6 @@ package shiftregister
 
 import (
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type NumberBit int8
@@ -18,39 +16,31 @@ const (
 
 // Device holds pin number
 type Device struct {
-	latch, clock, out drivers.PinOutput // IC wiring
-	config            func()
-	bits              NumberBit // Pin number
-	mask              uint32    // keep all pins state
+	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 pin.Output) *Device {
+func New(Bits NumberBit, Latch, Clock, Out drivers.Pin) *Device {
 	return &Device{
-		latch: Latch.Set,
-		clock: Clock.Set,
-		out:   Out.Set,
+		latch: Latch,
+		clock: Clock,
+		out:   Out,
 		bits:  Bits,
-		config: func() {
-			legacy.ConfigurePinOut(Latch)
-			legacy.ConfigurePinOut(Clock)
-			legacy.ConfigurePinOut(Out)
-		},
 	}
 }
 
-// Configure set hardware configuration
+// Configure set hardware configuration. Make sure that the pins are already configured
+// as output.
 func (d *Device) Configure() {
-	if d.config == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
 	d.latch.High()
 }
 
@@ -61,7 +51,7 @@ func (d *Device) WriteMask(mask uint32) {
 	d.latch.Low()
 	for i := 0; i < int(d.bits); i++ {
 		d.clock.Low()
-		d.out(mask&1 != 0)
+		d.out.Set(mask&1 != 0)
 		mask = mask >> 1
 		d.clock.High()
 	}

ssd1289/pinbus.go

@@ -1,5 +1,3 @@
-//go:build baremetal
-
 package ssd1289
 
 import "machine"

ssd1289/ssd1289.go

@@ -5,11 +5,9 @@ package ssd1289
 
 import (
 	"image/color"
-	"machine"
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
 )
 
 type Bus interface {
@@ -17,32 +15,28 @@ type Bus interface {
 }
 
 type Device struct {
-	rs  drivers.PinOutput
-	wr  drivers.PinOutput
-	cs  drivers.PinOutput
-	rst drivers.PinOutput
+	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.Set,
-		wr:  wr.Set,
-		cs:  cs.Set,
-		rst: rst.Set,
+		rs:  rs,
+		wr:  wr,
+		cs:  cs,
+		rst: rst,
 		bus: bus,
 	}
-	legacy.ConfigurePinOut(rs)
-	legacy.ConfigurePinOut(wr)
-	legacy.ConfigurePinOut(cs)
-	legacy.ConfigurePinOut(rst)
 
-	cs.Set(true)
-	rst.Set(true)
-	wr.Set(true)
+	cs.High()
+	rst.High()
+	wr.High()
 
 	return d
 }

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

@@ -5,13 +5,11 @@ package ssd1331 // import "tinygo.org/x/drivers/ssd1331"
 
 import (
 	"image/color"
-	"machine"
 
 	"errors"
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
 )
 
 type Model uint8
@@ -20,9 +18,9 @@ type Rotation uint8
 // Device wraps an SPI connection.
 type Device struct {
 	bus         drivers.SPI
-	dcPin       drivers.PinOutput
-	resetPin    drivers.PinOutput
-	csPin       drivers.PinOutput
+	dcPin       drivers.Pin
+	resetPin    drivers.Pin
+	csPin       drivers.Pin
 	width       int16
 	height      int16
 	batchLength int16
@@ -36,16 +34,13 @@ 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 {
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(resetPin)
-	legacy.ConfigurePinOut(csPin)
+// 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.Set,
-		resetPin: resetPin.Set,
-		csPin:    csPin.Set,
+		dcPin:    dcPin,
+		resetPin: resetPin,
+		csPin:    csPin,
 	}
 }
 
@@ -252,7 +247,7 @@ func (d *Device) Data(data uint8) {
 
 // Tx sends data to the display
 func (d *Device) Tx(data []byte, isCommand bool) {
-	d.dcPin(!isCommand)
+	d.dcPin.Set(!isCommand)
 	d.bus.Tx(data, nil)
 }
 

ssd1351/ssd1351.go

@@ -9,8 +9,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 var (
@@ -20,18 +18,17 @@ var (
 
 // Device wraps an SPI connection.
 type Device struct {
-	bus           drivers.SPI
-	dcPin         drivers.PinOutput
-	resetPin      drivers.PinOutput
-	csPin         drivers.PinOutput
-	enPin         drivers.PinOutput
-	rwPin         drivers.PinOutput
-	configurePins func()
-	width         int16
-	height        int16
-	rowOffset     int16
-	columnOffset  int16
-	bufferLength  int16
+	bus          drivers.SPI
+	dcPin        drivers.Pin
+	resetPin     drivers.Pin
+	csPin        drivers.Pin
+	enPin        drivers.Pin
+	rwPin        drivers.Pin
+	width        int16
+	height       int16
+	rowOffset    int16
+	columnOffset int16
+	bufferLength int16
 }
 
 // Config is the configuration for the display
@@ -43,29 +40,19 @@ 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 pin.Output) Device {
+func New(bus drivers.SPI, resetPin, dcPin, csPin, enPin, rwPin drivers.Pin) Device {
 	return Device{
 		bus:      bus,
-		dcPin:    dcPin.Set,
-		resetPin: resetPin.Set,
-		csPin:    csPin.Set,
-		enPin:    enPin.Set,
-		rwPin:    rwPin.Set,
-		configurePins: func() {
-			legacy.ConfigurePinOut(dcPin)
-			legacy.ConfigurePinOut(resetPin)
-			legacy.ConfigurePinOut(csPin)
-			legacy.ConfigurePinOut(enPin)
-			legacy.ConfigurePinOut(rwPin)
-		},
+		dcPin:    dcPin,
+		resetPin: resetPin,
+		csPin:    csPin,
+		enPin:    enPin,
+		rwPin:    rwPin,
 	}
 }
 
 // Configure initializes the display with default configuration
 func (d *Device) Configure(cfg Config) {
-	if d.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
 	if cfg.Width == 0 {
 		cfg.Width = 128
 	}
@@ -84,9 +71,6 @@ func (d *Device) Configure(cfg Config) {
 		d.bufferLength = d.height
 	}
 
-	// configure GPIO pins
-	d.configurePins()
-
 	// reset the device
 	d.resetPin.High()
 	time.Sleep(100 * time.Millisecond)
@@ -286,7 +270,7 @@ func (d *Device) Data(data uint8) {
 
 // Tx sends data to the display
 func (d *Device) Tx(data []byte, isCommand bool) {
-	d.dcPin(!isCommand)
+	d.dcPin.Set(!isCommand)
 	d.csPin.Low()
 	d.bus.Tx(data, nil)
 	d.csPin.High()

st7735/st7735.go

@@ -10,8 +10,6 @@ import (
 	"errors"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 	"tinygo.org/x/drivers/pixel"
 )
 
@@ -40,10 +38,10 @@ type Device = DeviceOf[pixel.RGB565BE]
 // formats.
 type DeviceOf[T Color] struct {
 	bus          drivers.SPI
-	dcPin        drivers.PinOutput
-	resetPin     drivers.PinOutput
-	csPin        drivers.PinOutput
-	blPin        drivers.PinOutput
+	dcPin        drivers.Pin
+	resetPin     drivers.Pin
+	csPin        drivers.Pin
+	blPin        drivers.Pin
 	width        int16
 	height       int16
 	columnOffset int16
@@ -66,23 +64,19 @@ 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 pin.Output) 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 pin.Output) DeviceOf[T] {
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(resetPin)
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(blPin)
+// 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.Set,
-		resetPin: resetPin.Set,
-		csPin:    csPin.Set,
-		blPin:    blPin.Set,
+		dcPin:    dcPin,
+		resetPin: resetPin,
+		csPin:    csPin,
+		blPin:    blPin,
 	}
 }
 
@@ -424,7 +418,7 @@ func (d *DeviceOf[T]) Data(data uint8) {
 
 // Tx sends data to the display
 func (d *DeviceOf[T]) Tx(data []byte, isCommand bool) {
-	d.dcPin(!isCommand)
+	d.dcPin.Set(!isCommand)
 	d.bus.Tx(data, nil)
 }
 

st7789/st7789.go

@@ -7,14 +7,13 @@ package st7789 // import "tinygo.org/x/drivers/st7789"
 
 import (
 	"image/color"
+	"machine"
 	"math"
 	"time"
 
 	"errors"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 	"tinygo.org/x/drivers/pixel"
 )
 
@@ -47,10 +46,10 @@ type Device = DeviceOf[pixel.RGB565BE]
 // formats.
 type DeviceOf[T Color] struct {
 	bus             drivers.SPI
-	dcPin           drivers.PinOutput
-	resetPin        drivers.PinOutput
-	csPin           drivers.PinOutput
-	blPin           drivers.PinOutput
+	dcPin           drivers.Pin
+	resetPin        drivers.Pin
+	csPin           drivers.Pin
+	blPin           drivers.Pin
 	width           int16
 	height          int16
 	columnOffsetCfg int16
@@ -84,27 +83,19 @@ 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 pin.Output) 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 pin.Output) DeviceOf[T] {
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(resetPin)
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(blPin)
-	var cs drivers.PinOutput
-	if !legacy.PinIsNoPin(csPin) {
-		cs = csPin.Set
-	}
+// 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.Set,
-		resetPin: resetPin.Set,
-		csPin:    cs,
-		blPin:    blPin.Set,
+		dcPin:    dcPin,
+		resetPin: resetPin,
+		csPin:    csPin,
+		blPin:    blPin,
 	}
 }
 
@@ -234,7 +225,7 @@ func (d *DeviceOf[T]) sendCommand(command uint8, data []byte) error {
 // startWrite must be called at the beginning of all exported methods to set the
 // chip select pin low.
 func (d *DeviceOf[T]) startWrite() {
-	if d.csPin != nil {
+	if d.csPin != machine.NoPin {
 		d.csPin.Low()
 	}
 }
@@ -242,7 +233,7 @@ func (d *DeviceOf[T]) startWrite() {
 // endWrite must be called at the end of all exported methods to set the chip
 // select pin high.
 func (d *DeviceOf[T]) endWrite() {
-	if d.csPin != nil {
+	if d.csPin != machine.NoPin {
 		d.csPin.High()
 	}
 }

sx127x/sx127x.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/pin"
 	"tinygo.org/x/drivers/lora"
 )
 
@@ -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         drivers.PinOutput    // 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
@@ -43,10 +42,10 @@ 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 pin.Output) *Device {
+func New(spi drivers.SPI, rstPin drivers.Pin) *Device {
 	k := Device{
 		spi:            spi,
-		rstPin:         rstPin.Set,
+		rstPin:         rstPin,
 		radioEventChan: make(chan lora.RadioEvent, RADIOEVENTCHAN_SIZE),
 		spiTxBuf:       make([]byte, SPI_BUFFER_SIZE),
 		spiRxBuf:       make([]byte, SPI_BUFFER_SIZE),

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

@@ -11,8 +11,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 	"tinygo.org/x/drivers/pixel"
 )
 
@@ -32,10 +30,10 @@ type Config struct {
 
 type Device struct {
 	bus                      drivers.SPI
-	cs                       drivers.PinOutput
-	dc                       drivers.PinOutput
-	rst                      drivers.PinOutput
-	isBusy                   drivers.PinInput
+	cs                       drivers.Pin
+	dc                       drivers.Pin
+	rst                      drivers.Pin
+	busy                     drivers.Pin
 	width                    int16
 	height                   int16
 	buffer                   []uint8
@@ -49,18 +47,15 @@ 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 pin.Output, busyPin pin.Input) Device {
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(rstPin)
-	legacy.ConfigurePinInput(busyPin)
+// 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.Set,
-		dc:     dcPin.Set,
-		rst:    rstPin.Set,
-		isBusy: busyPin.Get,
+		bus:  bus,
+		cs:   csPin,
+		dc:   dcPin,
+		rst:  rstPin,
+		busy: busyPin,
 	}
 }
 
@@ -314,14 +309,14 @@ func (d *Device) ClearDisplay() {
 
 // WaitUntilIdle waits until the display is ready
 func (d *Device) WaitUntilIdle() {
-	for !d.isBusy() {
+	for !d.busy.Get() {
 		time.Sleep(10 * time.Millisecond)
 	}
 }
 
 // IsBusy returns the busy status of the display
 func (d *Device) IsBusy() bool {
-	return d.isBusy()
+	return d.busy.Get()
 }
 
 // ClearBuffer sets the buffer to 0xFF (white)

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

@@ -14,8 +14,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type Config struct {
@@ -26,14 +24,14 @@ type Config struct {
 }
 
 type Device struct {
-	bus           *machine.SPI
-	cs            drivers.PinOutput
-	dc            drivers.PinOutput
-	rst           drivers.PinOutput
-	isBusy        drivers.PinInput
-	configurePins func()
-	buffer        []uint8
-	rotation      Rotation
+	bus  *machine.SPI
+	cs   drivers.Pin
+	dc   drivers.Pin
+	rst  drivers.Pin
+	busy drivers.Pin
+
+	buffer   []uint8
+	rotation Rotation
 }
 
 type Rotation uint8
@@ -83,29 +81,18 @@ 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 pin.Output, busyPin pin.Input) 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,
-		cs:     csPin.Set,
-		dc:     dcPin.Set,
-		rst:    rstPin.Set,
-		isBusy: busyPin.Get,
-		configurePins: func() {
-			legacy.ConfigurePinOut(csPin)
-			legacy.ConfigurePinOut(dcPin)
-			legacy.ConfigurePinOut(rstPin)
-			legacy.ConfigurePinInput(busyPin)
-		},
+		cs:     csPin,
+		dc:     dcPin,
+		rst:    rstPin,
+		busy:   busyPin,
 	}
 }
 
 func (d *Device) LDirInit(cfg Config) {
-	if d.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	d.configurePins()
-
 	d.bus.Configure(machine.SPIConfig{
 		Frequency: 2000000,
 		Mode:      0,
@@ -160,11 +147,6 @@ func (d *Device) LDirInit(cfg Config) {
 }
 
 func (d *Device) HDirInit(cfg Config) {
-	if d.configurePins == nil {
-		panic(legacy.ErrConfigBeforeInstantiated)
-	}
-	d.configurePins()
-
 	d.bus.Configure(machine.SPIConfig{
 		Frequency: 2000000,
 		Mode:      0,
@@ -379,7 +361,7 @@ func (d *Device) Clear() {
 
 // WaitUntilIdle waits until the display is ready
 func (d *Device) WaitUntilIdle() {
-	for d.isBusy() {
+	for d.busy.Get() {
 		time.Sleep(100 * time.Millisecond)
 	}
 	time.Sleep(200 * time.Millisecond)
@@ -387,7 +369,7 @@ func (d *Device) WaitUntilIdle() {
 
 // IsBusy returns the busy status of the display
 func (d *Device) IsBusy() bool {
-	return d.isBusy()
+	return d.busy.Get()
 }
 
 // ClearBuffer sets the buffer to 0xFF (white)

waveshare-epd/epd2in13/epd2in13.go

@@ -9,8 +9,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type Config struct {
@@ -22,10 +20,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           drivers.PinOutput
-	dc           drivers.PinOutput
-	rst          drivers.PinOutput
-	isBusy       drivers.PinInput
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	logicalWidth int16
 	width        int16
 	height       int16
@@ -53,18 +51,15 @@ 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 pin.Output, busyPin pin.Input) Device {
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(rstPin)
-	legacy.ConfigurePinInput(busyPin)
+// 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.Set,
-		dc:     dcPin.Set,
-		rst:    rstPin.Set,
-		isBusy: busyPin.Get,
+		bus:  bus,
+		cs:   csPin,
+		dc:   dcPin,
+		rst:  rstPin,
+		busy: busyPin,
 	}
 }
 
@@ -299,14 +294,14 @@ func (d *Device) setMemoryPointer(x int16, y int16) {
 
 // WaitUntilIdle waits until the display is ready
 func (d *Device) WaitUntilIdle() {
-	for d.isBusy() {
+	for d.busy.Get() {
 		time.Sleep(100 * time.Millisecond)
 	}
 }
 
 // IsBusy returns the busy status of the display
 func (d *Device) IsBusy() bool {
-	return d.isBusy()
+	return d.busy.Get()
 }
 
 // ClearBuffer sets the buffer to 0xFF (white)

waveshare-epd/epd2in13x/epd2in13x.go

@@ -9,8 +9,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type Config struct {
@@ -21,10 +19,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           drivers.PinOutput
-	dc           drivers.PinOutput
-	rst          drivers.PinOutput
-	isBusy       drivers.PinInput
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	width        int16
 	height       int16
 	buffer       [][]uint8
@@ -33,18 +31,15 @@ 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 pin.Output, busyPin pin.Input) Device {
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(rstPin)
-	legacy.ConfigurePinInput(busyPin)
+// 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.Set,
-		dc:     dcPin.Set,
-		rst:    rstPin.Set,
-		isBusy: busyPin.Get,
+		bus:  bus,
+		cs:   csPin,
+		dc:   dcPin,
+		rst:  rstPin,
+		busy: busyPin,
 	}
 }
 
@@ -278,14 +273,14 @@ func (d *Device) ClearDisplay() {
 
 // WaitUntilIdle waits until the display is ready
 func (d *Device) WaitUntilIdle() {
-	for !d.isBusy() {
+	for !d.busy.Get() {
 		time.Sleep(100 * time.Millisecond)
 	}
 }
 
 // IsBusy returns the busy status of the display
 func (d *Device) IsBusy() bool {
-	return d.isBusy()
+	return d.busy.Get()
 }
 
 // ClearBuffer sets the buffer to 0xFF (white)

waveshare-epd/epd2in66b/dev.go

@@ -17,12 +17,19 @@ const (
 
 const Baudrate = 4_000_000 // 4 MHz
 
+type Config struct {
+	ResetPin      drivers.Pin
+	DataPin       drivers.Pin
+	ChipSelectPin drivers.Pin
+	BusyPin       drivers.Pin
+}
+
 type Device struct {
-	bus    drivers.SPI
-	cs     drivers.PinOutput
-	dc     drivers.PinOutput
-	rst    drivers.PinOutput
-	isBusy drivers.PinInput
+	bus  drivers.SPI
+	cs   drivers.Pin
+	dc   drivers.Pin
+	rst  drivers.Pin
+	busy drivers.Pin
 
 	blackBuffer []byte
 	redBuffer   []byte
@@ -42,6 +49,17 @@ func New(bus drivers.SPI) Device {
 	}
 }
 
+// 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
+
+	return nil
+}
+
 func (d *Device) Size() (x, y int16) {
 	return displayWidth, displayHeight
 }
@@ -206,7 +224,7 @@ func (d *Device) WaitUntilIdle() {
 	// give it some time to get busy
 	time.Sleep(50 * time.Millisecond)
 
-	for d.isBusy() { // high = busy
+	for d.busy.Get() { // high = busy
 		time.Sleep(10 * time.Millisecond)
 	}
 

waveshare-epd/epd2in66b/dev_baremetal.go

@@ -1,30 +0,0 @@
-//go:build baremetal
-
-package epd2in66b
-
-import "machine"
-
-type Config struct {
-	ResetPin      machine.Pin
-	DataPin       machine.Pin
-	ChipSelectPin machine.Pin
-	BusyPin       machine.Pin
-}
-
-// Configure configures the device and its pins.
-func (d *Device) Configure(c Config) error {
-	cs := c.ChipSelectPin
-	dc := c.DataPin
-	rst := c.ResetPin
-	busy := c.BusyPin
-
-	cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dc.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	rst.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	busy.Configure(machine.PinConfig{Mode: machine.PinInput})
-	d.cs = cs.Set
-	d.dc = dc.Set
-	d.rst = rst.Set
-	d.isBusy = busy.Get
-	return nil
-}

waveshare-epd/epd2in9/epd2in9.go

@@ -16,8 +16,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type Config struct {
@@ -29,10 +27,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           drivers.PinOutput
-	dc           drivers.PinOutput
-	rst          drivers.PinOutput
-	isBusy       drivers.PinInput
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	logicalWidth int16
 	width        int16
 	height       int16
@@ -61,18 +59,15 @@ 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 pin.Output, busyPin pin.Input) Device {
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(rstPin)
-	legacy.ConfigurePinInput(busyPin)
+// 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.Set,
-		dc:     dcPin.Set,
-		rst:    rstPin.Set,
-		isBusy: busyPin.Get,
+		bus:  bus,
+		cs:   csPin,
+		dc:   dcPin,
+		rst:  rstPin,
+		busy: busyPin,
 	}
 }
 
@@ -246,14 +241,14 @@ func (d *Device) setMemoryPointer(x int16, y int16) {
 
 // WaitUntilIdle waits until the display is ready
 func (d *Device) WaitUntilIdle() {
-	for d.isBusy() {
+	for d.busy.Get() {
 		time.Sleep(100 * time.Millisecond)
 	}
 }
 
 // IsBusy returns the busy status of the display
 func (d *Device) IsBusy() bool {
-	return d.isBusy()
+	return d.busy.Get()
 }
 
 // ClearBuffer sets the buffer to 0xFF (white)

waveshare-epd/epd4in2/epd4in2.go

@@ -13,8 +13,6 @@ import (
 	"time"
 
 	"tinygo.org/x/drivers"
-	"tinygo.org/x/drivers/internal/legacy"
-	"tinygo.org/x/drivers/internal/pin"
 )
 
 type Config struct {
@@ -26,10 +24,10 @@ type Config struct {
 
 type Device struct {
 	bus          drivers.SPI
-	cs           drivers.PinOutput
-	dc           drivers.PinOutput
-	rst          drivers.PinOutput
-	isBusy       drivers.PinInput
+	cs           drivers.Pin
+	dc           drivers.Pin
+	rst          drivers.Pin
+	busy         drivers.Pin
 	logicalWidth int16
 	width        int16
 	height       int16
@@ -40,18 +38,15 @@ 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 pin.Output, busyPin pin.Input) Device {
-	legacy.ConfigurePinOut(csPin)
-	legacy.ConfigurePinOut(dcPin)
-	legacy.ConfigurePinOut(rstPin)
-	legacy.ConfigurePinInput(busyPin)
+// 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.Set,
-		dc:     dcPin.Set,
-		rst:    rstPin.Set,
-		isBusy: busyPin.Get,
+		bus:  bus,
+		cs:   csPin,
+		dc:   dcPin,
+		rst:  rstPin,
+		busy: busyPin,
 	}
 }
 
@@ -312,14 +307,14 @@ func (d *Device) ClearDisplay() {
 
 // WaitUntilIdle waits until the display is ready
 func (d *Device) WaitUntilIdle() {
-	for d.isBusy() {
+	for d.busy.Get() {
 		time.Sleep(100 * time.Millisecond)
 	}
 }
 
 // IsBusy returns the busy status of the display
 func (d *Device) IsBusy() bool {
-	return d.isBusy()
+	return d.busy.Get()
 }
 
 // ClearBuffer sets the buffer to 0xFF (white)

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
 	}