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.
92 строки
1,5 КиБ
Go
92 строки
1,5 КиБ
Go
// +build bluepill
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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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// https://wiki.stm32duino.com/index.php?title=File:Bluepillpinout.gif
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const (
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PA0 = portA + 0
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PA1 = portA + 1
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PA2 = portA + 2
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PA3 = portA + 3
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PA4 = portA + 4
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PA5 = portA + 5
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PA6 = portA + 6
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PA7 = portA + 7
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PA8 = portA + 8
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PA9 = portA + 9
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PA10 = portA + 10
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PA11 = portA + 11
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PA12 = portA + 12
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PA13 = portA + 13
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PA14 = portA + 14
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PA15 = portA + 15
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PB0 = portB + 0
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PB1 = portB + 1
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PB2 = portB + 2
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PB3 = portB + 3
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PB4 = portB + 4
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PB5 = portB + 5
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PB6 = portB + 6
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PB7 = portB + 7
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PB8 = portB + 8
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PB9 = portB + 9
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PB10 = portB + 10
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PB11 = portB + 11
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PB12 = portB + 12
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PB13 = portB + 13
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PB14 = portB + 14
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PB15 = portB + 15
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PC13 = portC + 13
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PC14 = portC + 14
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PC15 = portC + 15
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)
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const (
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LED = PC13
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)
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// UART pins
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const (
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UART_TX_PIN = PA9
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UART_RX_PIN = PA10
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UART_ALT_TX_PIN = PB6
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UART_ALT_RX_PIN = PB7
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)
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var (
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// USART1 is the first hardware serial port on the STM32.
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// Both UART0 and UART1 refer to USART1.
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UART0 = &_UART0
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_UART0 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART1,
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}
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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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}
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)
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func init() {
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UART0.Interrupt = interrupt.New(stm32.IRQ_USART1, _UART0.handleInterrupt)
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UART1.Interrupt = interrupt.New(stm32.IRQ_USART2, _UART1.handleInterrupt)
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}
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// SPI pins
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const (
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SPI0_SCK_PIN = PA5
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SPI0_SDO_PIN = PA7
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SPI0_SDI_PIN = PA6
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)
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// I2C pins
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const (
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I2C0_SDA_PIN = PB7
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I2C0_SCL_PIN = PB6
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)
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