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Patrick Ting
106 lines
2.1 KiB
Go
106 lines
2.1 KiB
Go
//go:build nucleol476rg
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// Schematic: https://www.st.com/resource/en/user_manual/um1724-stm32-nucleo64-boards-mb1136-stmicroelectronics.pdf
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// Datasheet: https://www.st.com/resource/en/datasheet/stm32l476je.pdf
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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 (
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// Arduino Pins
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A0 = PA0
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A1 = PA1
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A2 = PA4
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A3 = PB0
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A4 = PC1
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A5 = PC0
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D0 = PA3
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D1 = PA2
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D2 = PA10
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D3 = PB3
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D4 = PB5
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D5 = PB4
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D6 = PB10
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D7 = PA8
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D8 = PA9
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D9 = PC7
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D10 = PB6
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D11 = PA7
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D12 = PA6
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D13 = PA5
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D14 = PB9
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D15 = PB8
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)
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// User LD2: the green LED is a user LED connected to ARDUINO® signal D13 corresponding
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// to STM32 I/O PA5 (pin 21) or PB13 (pin 34) depending on the STM32 target.
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const (
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LED = LED_BUILTIN
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LED_BUILTIN = LED_GREEN
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LED_GREEN = PA5
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)
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const (
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// This board does not have a user button, so
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// use first GPIO pin by default
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BUTTON = PA0
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)
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const (
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// UART pins
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// PA2 and PA3 are connected to the ST-Link Virtual Com Port (VCP)
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UART_TX_PIN = PA2
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UART_RX_PIN = PA3
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// I2C pins
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// With default solder bridge settings:
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// PB8 / Arduino D5 / CN3 Pin 8 is SCL
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// PB7 / Arduino D4 / CN3 Pin 7 is SDA
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I2C0_SCL_PIN = PB8
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I2C0_SDA_PIN = PB9
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// SPI pins
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SPI1_SCK_PIN = PA5
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SPI1_SDI_PIN = PA6
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SPI1_SDO_PIN = PA7
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SPI0_SCK_PIN = SPI1_SCK_PIN
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SPI0_SDI_PIN = SPI1_SDI_PIN
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SPI0_SDO_PIN = SPI1_SDO_PIN
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)
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var (
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// USART2 is the hardware serial port connected to the onboard ST-LINK
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// debugger to be exposed as virtual COM port over USB on Nucleo boards.
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UART1 = &_UART1
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_UART1 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART2,
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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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// I2C1 is documented, alias to I2C0 as well
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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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I2C0 = I2C1
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// SPI1 is documented, alias to SPI0 as well
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SPI1 = &SPI{
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Bus: stm32.SPI1,
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AltFuncSelector: AF5_SPI1_2,
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}
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SPI0 = SPI1
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)
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func init() {
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UART1.Interrupt = interrupt.New(stm32.IRQ_USART2, _UART1.handleInterrupt)
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}
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