//go:build bluepill // +build bluepill package machine import ( "device/stm32" "runtime/interrupt" ) const ( LED = PC13 ) const ( // This board does not have a user button, so // use first GPIO pin by default BUTTON = PA0 ) // Analog Pins const ( ADC0 = PA0 ADC1 = PA1 ADC2 = PA2 ADC3 = PA3 ADC4 = PA4 ADC5 = PA5 ADC6 = PA6 ADC7 = PA7 ADC8 = PB0 ADC9 = PB1 ) var DefaultUART = UART1 // UART pins const ( UART_TX_PIN = PA9 UART_RX_PIN = PA10 UART_ALT_TX_PIN = PB6 UART_ALT_RX_PIN = PB7 ) var ( // USART1 is the first hardware serial port on the STM32. UART1 = &_UART1 _UART1 = UART{ Buffer: NewRingBuffer(), Bus: stm32.USART1, } UART2 = &_UART2 _UART2 = UART{ Buffer: NewRingBuffer(), Bus: stm32.USART2, } ) func init() { UART1.Interrupt = interrupt.New(stm32.IRQ_USART1, _UART1.handleInterrupt) UART2.Interrupt = interrupt.New(stm32.IRQ_USART2, _UART2.handleInterrupt) } // SPI pins const ( SPI0_SCK_PIN = PA5 SPI0_SDO_PIN = PA7 SPI0_SDI_PIN = PA6 ) // I2C pins const ( I2C0_SDA_PIN = PB7 I2C0_SCL_PIN = PB6 )