mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-10 22:13:39 +00:00
Ayke van Laethem
aa5b8d0df7
This means that machine.UART0, machine.UART1, etc are of type *machine.UART, not machine.UART. This makes them easier to pass around and avoids surprises when they are passed around by value while they should be passed around by reference. There is a small code size impact in some cases, but it is relatively minor.
96 lines
1.6 KiB
Go
96 lines
1.6 KiB
Go
// +build nucleol432kc
|
|
|
|
package machine
|
|
|
|
import (
|
|
"device/stm32"
|
|
"runtime/interrupt"
|
|
)
|
|
|
|
const (
|
|
LED = LED_BUILTIN
|
|
LED_BUILTIN = LED_GREEN
|
|
LED_GREEN = PB3
|
|
)
|
|
|
|
const (
|
|
// Arduino Pins
|
|
A0 = PA0
|
|
A1 = PA1
|
|
A2 = PA3
|
|
A3 = PA4
|
|
A4 = PA5
|
|
A5 = PA6
|
|
A6 = PA7
|
|
A7 = PA2
|
|
|
|
D0 = PA10
|
|
D1 = PA9
|
|
D2 = PA12
|
|
D3 = PB0
|
|
D4 = PB7
|
|
D5 = PB6
|
|
D6 = PB1
|
|
D7 = PC14
|
|
D8 = PC15
|
|
D9 = PA8
|
|
D10 = PA11
|
|
D11 = PB5
|
|
D12 = PB4
|
|
D13 = PB3
|
|
)
|
|
|
|
const (
|
|
// UART pins
|
|
// PA2 and PA15 are connected to the ST-Link Virtual Com Port (VCP)
|
|
UART_TX_PIN = PA2
|
|
UART_RX_PIN = PA15
|
|
|
|
// I2C pins
|
|
// With default solder bridge settings:
|
|
// PB6 / Arduino D5 / CN3 Pin 8 is SCL
|
|
// PB7 / Arduino D4 / CN3 Pin 7 is SDA
|
|
I2C0_SCL_PIN = PB6
|
|
I2C0_SDA_PIN = PB7
|
|
|
|
// SPI pins
|
|
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
|
|
)
|
|
|
|
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.
|
|
// Both UART0 and UART1 refer to USART2.
|
|
UART0 = &_UART0
|
|
_UART0 = UART{
|
|
Buffer: NewRingBuffer(),
|
|
Bus: stm32.USART2,
|
|
TxAltFuncSelector: 7,
|
|
RxAltFuncSelector: 3,
|
|
}
|
|
UART1 = UART0
|
|
|
|
// I2C1 is documented, alias to I2C0 as well
|
|
I2C1 = &I2C{
|
|
Bus: stm32.I2C1,
|
|
AltFuncSelector: 4,
|
|
}
|
|
I2C0 = I2C1
|
|
|
|
// SPI1 is documented, alias to SPI0 as well
|
|
SPI1 = &SPI{
|
|
Bus: stm32.SPI1,
|
|
AltFuncSelector: 5,
|
|
}
|
|
SPI0 = SPI1
|
|
)
|
|
|
|
func init() {
|
|
UART0.Interrupt = interrupt.New(stm32.IRQ_USART2, _UART0.handleInterrupt)
|
|
}
|