mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-14 07:53:40 +00:00
Konstantin Sharlaimov
5f02d6b659
Define the board's external crystal (HSE) frequency `xtalHz` in the respective `board_*.go` files. Per-topology PLL tables (F1, F4, F7) will compute the register dividers from it. Moving this parameter to the board definition level cleanly isolates board hardware characteristics from general MCU chip configurations, eliminating the need for custom target build tags. Targets using HSE-clocked STM32 chips must define `xtalHz` or fail to build.
258 lines
7.2 KiB
Go
258 lines
7.2 KiB
Go
//go:build feather_stm32f405
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package machine
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import (
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"device/stm32"
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"runtime/interrupt"
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)
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const xtalHz = 12_000_000
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const (
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NUM_DIGITAL_IO_PINS = 39
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NUM_ANALOG_IO_PINS = 7
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)
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// Digital pins
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const (
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// Arduino pin = MCU port pin // primary functions (alternate functions)
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D0 = PB11 // USART3 RX, PWM TIM2_CH4 (I2C2 SDA)
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D1 = PB10 // USART3 TX, PWM TIM2_CH3 (I2C2 SCL, I2S2 BCK)
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D2 = PB3 // GPIO, SPI3 FLASH SCK
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D3 = PB4 // GPIO, SPI3 FLASH MISO
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D4 = PB5 // GPIO, SPI3 FLASH MOSI
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D5 = PC7 // GPIO, PWM TIM3_CH2 (USART6 RX, I2S3 MCK)
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D6 = PC6 // GPIO, PWM TIM3_CH1 (USART6 TX, I2S2 MCK)
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D7 = PA15 // GPIO, SPI3 FLASH CS
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D8 = PC0 // GPIO, Neopixel
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D9 = PB8 // GPIO, PWM TIM4_CH3 (CAN1 RX, I2C1 SCL)
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D10 = PB9 // GPIO, PWM TIM4_CH4 (CAN1 TX, I2C1 SDA, I2S2 WSL)
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D11 = PC3 // GPIO (I2S2 SD, SPI2 MOSI)
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D12 = PC2 // GPIO (I2S2ext SD, SPI2 MISO)
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D13 = PC1 // GPIO, Builtin LED
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D14 = PB7 // I2C1 SDA, PWM TIM4_CH2 (USART1 RX)
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D15 = PB6 // I2C1 SCL, PWM TIM4_CH1 (USART1 TX, CAN2 TX)
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D16 = PA4 // A0 (DAC OUT1)
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D17 = PA5 // A1 (DAC OUT2, SPI1 SCK)
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D18 = PA6 // A2, PWM TIM3_CH1 (SPI1 MISO)
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D19 = PA7 // A3, PWM TIM3_CH2 (SPI1 MOSI)
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D20 = PC4 // A4
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D21 = PC5 // A5
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D22 = PA3 // A6
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D23 = PB13 // SPI2 SCK, PWM TIM1_CH1N (I2S2 BCK, CAN2 TX)
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D24 = PB14 // SPI2 MISO, PWM TIM1_CH2N (I2S2ext SD)
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D25 = PB15 // SPI2 MOSI, PWM TIM1_CH3N (I2S2 SD)
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D26 = PC8 // SDIO
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D27 = PC9 // SDIO
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D28 = PC10 // SDIO
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D29 = PC11 // SDIO
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D30 = PC12 // SDIO
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D31 = PD2 // SDIO
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D32 = PB12 // SD Detect
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D33 = PC14 // OSC32
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D34 = PC15 // OSC32
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D35 = PA11 // USB D+
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D36 = PA12 // USB D-
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D37 = PA13 // SWDIO
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D38 = PA14 // SWCLK
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)
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// Analog pins
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const (
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A0 = D16 // ADC12 IN4
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A1 = D17 // ADC12 IN5
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A2 = D18 // ADC12 IN6
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A3 = D19 // ADC12 IN7
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A4 = D20 // ADC12 IN14
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A5 = D21 // ADC12 IN15
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A6 = D22 // VBAT
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)
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func init() {
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initLED()
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initUART()
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initSPI()
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initI2C()
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}
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// -- LEDs ---------------------------------------------------------------------
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const (
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NUM_BOARD_LED = 1
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NUM_BOARD_NEOPIXEL = 1
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LED_RED = D13
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LED_NEOPIXEL = D8
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LED_BUILTIN = LED_RED
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LED = LED_BUILTIN
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WS2812 = D8
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)
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func initLED() {}
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// -- UART ---------------------------------------------------------------------
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const (
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// #===========#==========#==============#============#=======#=======#
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// | Interface | Hardware | Bus(Freq) | RX/TX Pins | AltFn | Alias |
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// #===========#==========#==============#============#=======#=======#
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// | UART1 | USART3 | APB1(42 MHz) | D0/D1 | 7 | ~ |
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// | UART2 | USART6 | APB2(84 MHz) | D5/D6 | 8 | ~ |
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// | UART3 | USART1 | APB2(84 MHz) | D14/D15 | 7 | ~ |
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// | --------- | -------- | ------------ | ---------- | ----- | ----- |
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// | UART0 | USART3 | APB1(42 MHz) | D0/D1 | 7 | UART1 |
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// #===========#==========#==============#============#=======#=======#
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NUM_UART_INTERFACES = 3
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UART1_RX_PIN = D0 // UART1 = hardware: USART3
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UART1_TX_PIN = D1 //
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UART2_RX_PIN = D5 // UART2 = hardware: USART6
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UART2_TX_PIN = D6 //
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UART3_RX_PIN = D14 // UART3 = hardware: USART1
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UART3_TX_PIN = D15 //
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UART0_RX_PIN = UART1_RX_PIN // UART0 = alias: UART1
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UART0_TX_PIN = UART1_TX_PIN //
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UART_RX_PIN = UART0_RX_PIN // default/primary UART pins
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UART_TX_PIN = UART0_TX_PIN //
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)
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var (
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UART1 = &_UART1
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_UART1 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART3,
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TxAltFuncSelector: AF7_USART1_2_3,
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RxAltFuncSelector: AF7_USART1_2_3,
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}
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UART2 = &_UART2
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_UART2 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART6,
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TxAltFuncSelector: AF8_USART4_5_6,
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RxAltFuncSelector: AF8_USART4_5_6,
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}
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UART3 = &_UART3
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_UART3 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART1,
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TxAltFuncSelector: AF7_USART1_2_3,
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RxAltFuncSelector: AF7_USART1_2_3,
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}
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DefaultUART = UART1
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)
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func initUART() {
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UART1.Interrupt = interrupt.New(stm32.IRQ_USART3, _UART1.handleInterrupt)
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UART2.Interrupt = interrupt.New(stm32.IRQ_USART6, _UART2.handleInterrupt)
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UART3.Interrupt = interrupt.New(stm32.IRQ_USART1, _UART3.handleInterrupt)
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}
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// -- SPI ----------------------------------------------------------------------
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const (
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// #===========#==========#==============#==================#=======#=======#
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// | Interface | Hardware | Bus(Freq) | SCK/SDI/SDO Pins | AltFn | Alias |
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// #===========#==========#==============#==================#=======#=======#
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// | SPI1 | SPI2 | APB1(42 MHz) | D23/D24/D25 | 5 | ~ |
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// | SPI2 | SPI3 | APB1(42 MHz) | D2/D3/D4 | 6 | ~ |
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// | SPI3 | SPI1 | APB2(84 MHz) | D17/D18/D19 | 5 | ~ |
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// | --------- | -------- | ------------ | ---------------- | ----- | ----- |
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// | SPI0 | SPI2 | APB1(42 MHz) | D23/D24/D25 | 5 | SPI1 |
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// #===========#==========#==============#==================#=======#=======#
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NUM_SPI_INTERFACES = 3
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SPI1_SCK_PIN = D23 //
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SPI1_SDI_PIN = D24 // SPI1 = hardware: SPI2
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SPI1_SDO_PIN = D25 //
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SPI2_SCK_PIN = D2 //
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SPI2_SDI_PIN = D3 // SPI2 = hardware: SPI3
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SPI2_SDO_PIN = D4 //
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SPI3_SCK_PIN = D17 //
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SPI3_SDI_PIN = D18 // SPI3 = hardware: SPI1
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SPI3_SDO_PIN = D19 //
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SPI0_SCK_PIN = SPI1_SCK_PIN //
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SPI0_SDI_PIN = SPI1_SDI_PIN // SPI0 = alias: SPI1
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SPI0_SDO_PIN = SPI1_SDO_PIN //
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SPI_SCK_PIN = SPI0_SCK_PIN //
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SPI_SDI_PIN = SPI0_SDI_PIN // default/primary SPI pins
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SPI_SDO_PIN = SPI0_SDO_PIN //
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)
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var (
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SPI1 = &SPI{
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Bus: stm32.SPI2,
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AltFuncSelector: AF5_SPI1_SPI2,
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}
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SPI2 = &SPI{
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Bus: stm32.SPI3,
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AltFuncSelector: AF6_SPI3,
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}
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SPI3 = &SPI{
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Bus: stm32.SPI1,
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AltFuncSelector: AF5_SPI1_SPI2,
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}
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SPI0 = SPI1
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)
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func initSPI() {}
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// -- I2C ----------------------------------------------------------------------
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const (
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// #===========#==========#==============#==============#=======#=======#
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// | Interface | Hardware | Bus(Freq) | SDA/SCL Pins | AltFn | Alias |
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// #===========#==========#==============#==============#=======#=======#
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// | I2C1 | I2C1 | APB1(42 MHz) | D14/D15 | 4 | ~ |
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// | I2C2 | I2C2 | APB1(42 MHz) | D0/D1 | 4 | ~ |
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// | I2C3 | I2C1 | APB1(42 MHz) | D9/D10 | 4 | ~ |
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// | --------- | -------- | ------------ | ------------ | ----- | ----- |
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// | I2C0 | I2C1 | APB1(42 MHz) | D14/D15 | 4 | I2C1 |
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// #===========#==========#==============#==============#=======#=======#
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NUM_I2C_INTERFACES = 3
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I2C1_SDA_PIN = D14 // I2C1 = hardware: I2C1
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I2C1_SCL_PIN = D15 //
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I2C2_SDA_PIN = D0 // I2C2 = hardware: I2C2
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I2C2_SCL_PIN = D1 //
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I2C3_SDA_PIN = D9 // I2C3 = hardware: I2C1
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I2C3_SCL_PIN = D10 // (interface duplicated on second pair of pins)
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I2C0_SDA_PIN = I2C1_SDA_PIN // I2C0 = alias: I2C1
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I2C0_SCL_PIN = I2C1_SCL_PIN //
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I2C_SDA_PIN = I2C0_SDA_PIN // default/primary I2C pins
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I2C_SCL_PIN = I2C0_SCL_PIN //
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SDA_PIN = I2C0_SDA_PIN
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SCL_PIN = I2C0_SCL_PIN
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)
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var (
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I2C1 = &I2C{
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Bus: stm32.I2C1,
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AltFuncSelector: AF4_I2C1_2_3,
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}
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I2C2 = &I2C{
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Bus: stm32.I2C2,
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AltFuncSelector: AF4_I2C1_2_3,
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}
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I2C3 = &I2C{
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Bus: stm32.I2C1,
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AltFuncSelector: AF4_I2C1_2_3,
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}
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I2C0 = I2C1
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)
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func initI2C() {}
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