github.com/tinygo-org/tinygo@v0.31.3-0.20240404173401-90b0bf646c27/src/machine/board_feather-m4.go (about)

     1  //go:build feather_m4
     2  
     3  package machine
     4  
     5  // used to reset into bootloader
     6  const resetMagicValue = 0xf01669ef
     7  
     8  // GPIO Pins
     9  const (
    10  	D0  = PB17 // UART0 RX/PWM available
    11  	D1  = PB16 // UART0 TX/PWM available
    12  	D4  = PA14 // PWM available
    13  	D5  = PA16 // PWM available
    14  	D6  = PA18 // PWM available
    15  	D8  = PB03 // built-in neopixel
    16  	D9  = PA19 // PWM available
    17  	D10 = PA20 // can be used for PWM or UART1 TX
    18  	D11 = PA21 // can be used for PWM or UART1 RX
    19  	D12 = PA22 // PWM available
    20  	D13 = PA23 // PWM available
    21  	D21 = PA13 // PWM available
    22  	D22 = PA12 // PWM available
    23  	D23 = PB22 // PWM available
    24  	D24 = PB23 // PWM available
    25  	D25 = PA17 // PWM available
    26  )
    27  
    28  // Analog pins
    29  const (
    30  	A0 = PA02 // ADC/AIN[0]
    31  	A1 = PA05 // ADC/AIN[2]
    32  	A2 = PB08 // ADC/AIN[3]
    33  	A3 = PB09 // ADC/AIN[4]
    34  	A4 = PA04 // ADC/AIN[5]
    35  	A5 = PA06 // ADC/AIN[10]
    36  )
    37  
    38  const (
    39  	LED    = D13
    40  	WS2812 = D8
    41  )
    42  
    43  // USBCDC pins
    44  const (
    45  	USBCDC_DM_PIN = PA24
    46  	USBCDC_DP_PIN = PA25
    47  )
    48  
    49  const (
    50  	UART_TX_PIN = D1
    51  	UART_RX_PIN = D0
    52  )
    53  
    54  const (
    55  	UART2_TX_PIN = A4
    56  	UART2_RX_PIN = A5
    57  )
    58  
    59  var (
    60  	UART1 = &sercomUSART5
    61  	UART2 = &sercomUSART0
    62  
    63  	DefaultUART = UART1
    64  )
    65  
    66  // I2C pins
    67  const (
    68  	SDA_PIN = D22 // SDA: SERCOM2/PAD[0]
    69  	SCL_PIN = D21 // SCL: SERCOM2/PAD[1]
    70  )
    71  
    72  // I2C on the Feather M4.
    73  var (
    74  	I2C0 = sercomI2CM2
    75  )
    76  
    77  // SPI pins
    78  const (
    79  	SPI0_SCK_PIN = D25 // SCK: SERCOM1/PAD[1]
    80  	SPI0_SDO_PIN = D24 // SDO: SERCOM1/PAD[3]
    81  	SPI0_SDI_PIN = D23 // SDI: SERCOM1/PAD[2]
    82  )
    83  
    84  // SPI on the Feather M4.
    85  var SPI0 = sercomSPIM1
    86  
    87  // USB CDC identifiers
    88  const (
    89  	usb_STRING_PRODUCT      = "Adafruit Feather M4"
    90  	usb_STRING_MANUFACTURER = "Adafruit"
    91  )
    92  
    93  var (
    94  	usb_VID uint16 = 0x239A
    95  	usb_PID uint16 = 0x8022
    96  )