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Constants
const (PA0 = portA + 0PA1 = portA + 1PA2 = portA + 2PA3 = portA + 3PA4 = portA + 4PA5 = portA + 5PA6 = portA + 6PA7 = portA + 7PA8 = portA + 8PA9 = portA + 9PA10 = portA + 10PA11 = portA + 11PA12 = portA + 12PA13 = portA + 13PA14 = portA + 14PA15 = portA + 15PB0 = portB + 0PB1 = portB + 1PB2 = portB + 2PB3 = portB + 3PB4 = portB + 4PB5 = portB + 5PB6 = portB + 6PB7 = portB + 7PB8 = portB + 8PB9 = portB + 9PB10 = portB + 10PB11 = portB + 11PB12 = portB + 12PB13 = portB + 13PB14 = portB + 14PB15 = portB + 15PC0 = portC + 0PC1 = portC + 1PC2 = portC + 2PC3 = portC + 3PC4 = portC + 4PC5 = portC + 5PC6 = portC + 6PC7 = portC + 7PC8 = portC + 8PC9 = portC + 9PC10 = portC + 10PC11 = portC + 11PC12 = portC + 12PC13 = portC + 13PC14 = portC + 14PC15 = portC + 15PD0 = portD + 0PD1 = portD + 1PD2 = portD + 2PD3 = portD + 3PD4 = portD + 4PD5 = portD + 5PD6 = portD + 6PD7 = portD + 7PD8 = portD + 8PD9 = portD + 9PD10 = portD + 10PD11 = portD + 11PD12 = portD + 12PD13 = portD + 13PD14 = portD + 14PD15 = portD + 15PE0 = portE + 0PE1 = portE + 1PE2 = portE + 2PE3 = portE + 3PE4 = portE + 4PE5 = portE + 5PE6 = portE + 6PE7 = portE + 7PE8 = portE + 8PE9 = portE + 9PE10 = portE + 10PE11 = portE + 11PE12 = portE + 12PE13 = portE + 13PE14 = portE + 14PE15 = portE + 15PH0 = portH + 0PH1 = portH + 1)
const (LED = LED_BUILTINLED1 = LED_GREENLED2 = LED_ORANGELED3 = LED_REDLED4 = LED_BLUELED_BUILTIN = LED_GREENLED_GREEN = PD12LED_ORANGE = PD13LED_RED = PD14LED_BLUE = PD15)
const (UART_TX_PIN = PA2UART_RX_PIN = PA3)
UART pins
const NoPin = Pin(-1)
NoPin explicitly indicates “not a pin”. Use this pin if you want to leave oneof the pins in a peripheral unconfigured (if supported by the hardware).
const (// Mode FlagPinOutput PinMode = 0PinInput PinMode = PinInputFloatingPinInputFloating PinMode = 1PinInputPulldown PinMode = 2PinInputPullup PinMode = 3// for UARTPinModeUartTX PinMode = 4PinModeUartRX PinMode = 5//GPIOx_MODERGPIO_MODE_INPUT = 0GPIO_MODE_GENERAL_OUTPUT = 1GPIO_MODE_ALTERNABTIVE = 2GPIO_MODE_ANALOG = 3//GPIOx_OTYPERGPIO_OUTPUT_MODE_PUSH_PULL = 0GPIO_OUTPUT_MODE_OPEN_DRAIN = 1// GPIOx_OSPEEDRGPIO_SPEED_LOW = 0GPIO_SPEED_MID = 1GPIO_SPEED_HI = 2GPIO_SPEED_VERY_HI = 3// GPIOx_PUPDRGPIO_FLOATING = 0GPIO_PULL_UP = 1GPIO_PULL_DOWN = 2)
Variables
var (ErrInvalidInputPin = errors.New("machine: invalid input pin")ErrInvalidOutputPin = errors.New("machine: invalid output pin")ErrInvalidClockPin = errors.New("machine: invalid clock pin")ErrInvalidDataPin = errors.New("machine: invalid data pin"))
var (// Both UART0 and UART1 refer to USART2.UART0 = UART{Buffer: NewRingBuffer()}UART1 = &UART0)
func CPUFrequency
func CPUFrequency() uint32
func NewRingBuffer
func NewRingBuffer() *RingBuffer
NewRingBuffer returns a new ring buffer.
type ADC
type ADC struct {Pin Pin}
type PWM
type PWM struct {Pin Pin}
type Pin
type Pin int8
Pin is a single pin on a chip, which may be connected to other hardwaredevices. It can either be used directly as GPIO pin or it can be used inother peripherals like ADC, I2C, etc.
func (Pin) Configure
func (p Pin) Configure(config PinConfig)
Configure this pin with the given configuration.
func (Pin) High
func (p Pin) High()
High sets this GPIO pin to high, assuming it has been configured as an outputpin. It is hardware dependent (and often undefined) what happens if you set apin to high that is not configured as an output pin.
func (Pin) Low
func (p Pin) Low()
Low sets this GPIO pin to low, assuming it has been configured as an outputpin. It is hardware dependent (and often undefined) what happens if you set apin to low that is not configured as an output pin.
func (Pin) Set
func (p Pin) Set(high bool)
Set the pin to high or low.Warning: only use this on an output pin!
type PinConfig
type PinConfig struct {Mode PinMode}
type PinMode
type PinMode uint8
type RingBuffer
type RingBuffer struct {rxbuffer [bufferSize]volatile.Register8head volatile.Register8tail volatile.Register8}
RingBuffer is ring buffer implementation inspired by post athttps://www.embeddedrelated.com/showthread/comp.arch.embedded/77084-1.php
It has some limitations currently due to how “volatile” variables that aremembers of a struct are not compiled correctly by TinyGo.See https://github.com/tinygo-org/tinygo/issues/151 for details.
func (*RingBuffer) Get
func (rb *RingBuffer) Get() (byte, bool)
Get returns a byte from the buffer. If the buffer is empty,the method will return a false as the second value.
func (*RingBuffer) Put
func (rb *RingBuffer) Put(val byte) bool
Put stores a byte in the buffer. If the buffer is alreadyfull, the method will return false.
func (*RingBuffer) Used
func (rb *RingBuffer) Used() uint8
Used returns how many bytes in buffer have been used.
type UART
type UART struct {Buffer *RingBuffer}
UART
func (UART) Buffered
func (uart UART) Buffered() int
Buffered returns the number of bytes currently stored in the RX buffer.
func (UART) Configure
func (uart UART) Configure(config UARTConfig)
Configure the UART.
func (UART) Read
func (uart UART) Read(data []byte) (n int, err error)
Read from the RX buffer.
func (UART) ReadByte
func (uart UART) ReadByte() (byte, error)
ReadByte reads a single byte from the RX buffer.If there is no data in the buffer, returns an error.
func (UART) Receive
func (uart UART) Receive(data byte)
Receive handles adding data to the UART’s data buffer.Usually called by the IRQ handler for a machine.
func (UART) Write
func (uart UART) Write(data []byte) (n int, err error)
Write data to the UART.
func (UART) WriteByte
func (uart UART) WriteByte(c byte) error
WriteByte writes a byte of data to the UART.
type UARTConfig
type UARTConfig struct {BaudRate uint32TX PinRX Pin}
