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//go:build nucleol031k6
package machine
import (
"device/stm32"
"runtime/interrupt"
)
const (
// Arduino Pins
A0 = PA0 // ADC_IN0
A1 = PA1 // ADC_IN1
A2 = PA3 // ADC_IN3
A3 = PA4 // ADC_IN4
A4 = PA5 // ADC_IN5 || I2C1_SDA
A5 = PA6 // ADC_IN6 || I2C1_SCL
A6 = PA7 // ADC_IN7
A7 = PA2 // ADC_IN2
D0 = PA10 // USART1_TX
D1 = PA9 // USART1_RX
D2 = PA12
D3 = PB0 // TIM2_CH3
D4 = PB7
D5 = PB6 // TIM16_CH1N
D6 = PB1 // TIM14_CH1
D9 = PA8 // TIM1_CH1
D10 = PA11 // SPI_CS || TIM1_CH4
D11 = PB5 // SPI1_MOSI || TIM3_CH2
D12 = PB4 // SPI1_MISO
D13 = PB3 // SPI1_SCK
)
const (
LED = LED_BUILTIN
LED_BUILTIN = LED_GREEN
LED_GREEN = PB3
)
const (
// This board does not have a user button, so
// use first GPIO pin by default
BUTTON = PA0
)
const (
// UART pins
// PA2 and PA15 are connected to the ST-Link Virtual Com Port (VCP)
UART_TX_PIN = PA2
UART_RX_PIN = PA15
// SPI
SPI1_SCK_PIN = PB3
SPI1_SDI_PIN = PB5
SPI1_SDO_PIN = PB4
SPI0_SCK_PIN = SPI1_SCK_PIN
SPI0_SDI_PIN = SPI1_SDI_PIN
SPI0_SDO_PIN = SPI1_SDO_PIN
// I2C pins
// PB6 and PB7 are mapped to CN4 pin 7 and CN4 pin 8 respectively with the
// default solder bridge settings
I2C0_SCL_PIN = PB7
I2C0_SDA_PIN = PB6
I2C0_ALT_FUNC = 1
)
var (
// USART2 is the hardware serial port connected to the onboard ST-LINK
// debugger to be exposed as virtual COM port over USB on Nucleo boards.
UART1 = &_UART1
_UART1 = UART{
Buffer: NewRingBuffer(),
Bus: stm32.USART2,
TxAltFuncSelector: 4,
RxAltFuncSelector: 4,
}
DefaultUART = UART1
// I2C1 is documented, alias to I2C0 as well
I2C1 = &I2C{
Bus: stm32.I2C1,
AltFuncSelector: 1,
}
I2C0 = I2C1
// SPI
SPI0 = SPI{
Bus: stm32.SPI1,
AltFuncSelector: 0,
}
SPI1 = &SPI0
)
func init() {
UART1.Interrupt = interrupt.New(stm32.IRQ_USART2, _UART1.handleInterrupt)
}
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