126 строки
2,1 КиБ
Go
126 строки
2,1 КиБ
Go
// +build sam,atsamd21,xiao
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package machine
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import (
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"device/sam"
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"runtime/interrupt"
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)
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// used to reset into bootloader
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const RESET_MAGIC_VALUE = 0xf01669ef
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// GPIO Pins
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const (
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D0 = PA02 // can be used for PWM or DAC
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D1 = PA04 // PWM available
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D2 = PA10 // PWM available
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D3 = PA11 // PWM available
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D4 = PA08 // can be used for PWM or I2C SDA
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D5 = PA09 // can be used for PWM or I2C SCL
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D6 = PB08 // can be used for PWM or UART1 TX
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D7 = PB09 // can be used for PWM or UART1 RX
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D8 = PA07 // can be used for PWM or SPI SCK
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D9 = PA05 // can be used for PWM or SPI MISO
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D10 = PA06 // can be used for PWM or SPI MOSI
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)
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// Analog pins
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const (
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A0 = PA02 // ADC/AIN[0]
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A1 = PA04 // ADC/AIN[4]
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A2 = PA10 // ADC/AIN[18]
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A3 = PA11 // ADC/AIN[19]
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A4 = PA08 // ADC/AIN[16]
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A5 = PA09 // ADC/AIN[17]
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A6 = PB08 // ADC/AIN[2]
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A7 = PB09 // ADC/AIN[3]
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A8 = PA07 // ADC/AIN[7]
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A9 = PA05 // ADC/AIN[6]
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A10 = PA06 // ADC/AIN[5]
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)
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const (
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LED = PA17
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LED_RXL = PA18
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LED_TXL = PA19
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LED2 = LED_RXL
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LED3 = LED_TXL
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)
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// UART0 aka USBCDC pins
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const (
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USBCDC_DM_PIN = PA24
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USBCDC_DP_PIN = PA25
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)
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// UART1 pins
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const (
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UART_TX_PIN = D6
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UART_RX_PIN = D7
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)
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// UART1 on the Xiao
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var (
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UART1 = UART{
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Buffer: NewRingBuffer(),
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Bus: sam.SERCOM4_USART,
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SERCOM: 4,
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}
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)
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func init() {
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UART1.Interrupt = interrupt.New(sam.IRQ_SERCOM4, UART1.handleInterrupt)
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}
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// I2C pins
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const (
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SDA_PIN = PA08 // SDA: SERCOM2/PAD[0]
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SCL_PIN = PA09 // SCL: SERCOM2/PAD[1]
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)
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// I2C on the Xiao
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var (
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I2C0 = I2C{
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Bus: sam.SERCOM2_I2CM,
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SERCOM: 2,
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}
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)
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// SPI pins
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const (
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SPI0_SCK_PIN = PA07 // SCK: SERCOM0/PAD[3]
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SPI0_MOSI_PIN = PA06 // MOSI: SERCOM0/PAD[2]
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SPI0_MISO_PIN = PA05 // MISO: SERCOM0/PAD[1]
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)
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// SPI on the Xiao
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var (
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SPI0 = SPI{
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Bus: sam.SERCOM0_SPI,
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SERCOM: 0,
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}
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)
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// I2S pins
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const (
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I2S_SCK_PIN = PA10
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I2S_SD_PIN = PA08
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I2S_WS_PIN = NoPin // TODO: figure out what this is on Xiao
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)
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// I2S on the Xiao
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var (
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I2S0 = I2S{Bus: sam.I2S}
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "Seeed XIAO M0"
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usb_STRING_MANUFACTURER = "Seeed"
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)
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var (
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usb_VID uint16 = 0x2886
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usb_PID uint16 = 0x802F
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)
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