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

     1  //go:build feather_m4_can
     2  
     3  package machine
     4  
     5  import (
     6  	"device/sam"
     7  )
     8  
     9  // used to reset into bootloader
    10  const resetMagicValue = 0xf01669ef
    11  
    12  // GPIO Pins
    13  const (
    14  	D0  = PB17 // UART0 RX/PWM available
    15  	D1  = PB16 // UART0 TX/PWM available
    16  	D4  = PA14 // PWM available
    17  	D5  = PA16 // PWM available
    18  	D6  = PA18 // PWM available
    19  	D7  = PB03 // neopixel power
    20  	D8  = PB02 // built-in neopixel
    21  	D9  = PA19 // PWM available
    22  	D10 = PA20 // can be used for PWM or UART1 TX
    23  	D11 = PA21 // can be used for PWM or UART1 RX
    24  	D12 = PA22 // PWM available
    25  	D13 = PA23 // PWM available
    26  	D21 = PA13 // PWM available
    27  	D22 = PA12 // PWM available
    28  	D23 = PB22 // PWM available
    29  	D24 = PB23 // PWM available
    30  	D25 = PA17 // PWM available
    31  )
    32  
    33  // Analog pins
    34  const (
    35  	A0 = PA02 // ADC/AIN[0]
    36  	A1 = PA05 // ADC/AIN[2]
    37  	A2 = PB08 // ADC/AIN[3]
    38  	A3 = PB09 // ADC/AIN[4]
    39  	A4 = PA04 // ADC/AIN[5]
    40  	A5 = PA06 // ADC/AIN[10]
    41  )
    42  
    43  const (
    44  	LED       = D13
    45  	NEOPIXELS = D8
    46  	WS2812    = D8
    47  )
    48  
    49  // USBCDC pins
    50  const (
    51  	USBCDC_DM_PIN = PA24
    52  	USBCDC_DP_PIN = PA25
    53  )
    54  
    55  const (
    56  	UART_TX_PIN = D1
    57  	UART_RX_PIN = D0
    58  )
    59  
    60  const (
    61  	UART2_TX_PIN = A4
    62  	UART2_RX_PIN = A5
    63  )
    64  
    65  // I2C pins
    66  const (
    67  	SDA_PIN = D22 // SDA: SERCOM2/PAD[0]
    68  	SCL_PIN = D21 // SCL: SERCOM2/PAD[1]
    69  )
    70  
    71  // SPI pins
    72  const (
    73  	SPI0_SCK_PIN = D25 // SCK: SERCOM1/PAD[1]
    74  	SPI0_SDO_PIN = D24 // SDO: SERCOM1/PAD[3]
    75  	SPI0_SDI_PIN = D23 // SDI: SERCOM1/PAD[2]
    76  )
    77  
    78  // CAN pins
    79  const (
    80  	CAN0_TX = PA22
    81  	CAN0_RX = PA23
    82  
    83  	CAN1_STANDBY = PB12
    84  	CAN1_TX      = PB14
    85  	CAN1_RX      = PB15
    86  	BOOST_EN     = PB13 // power control of CAN1's TCAN1051HGV (H: enable)
    87  
    88  	CAN_STANDBY = CAN1_STANDBY
    89  	CAN_S       = CAN1_STANDBY
    90  	CAN_TX      = CAN1_TX
    91  	CAN_RX      = CAN1_RX
    92  )
    93  
    94  // USB CDC identifiers
    95  const (
    96  	usb_STRING_PRODUCT      = "Adafruit Feather M4 CAN"
    97  	usb_STRING_MANUFACTURER = "Adafruit"
    98  )
    99  
   100  var (
   101  	usb_VID uint16 = 0x239A
   102  	usb_PID uint16 = 0x80CD
   103  )
   104  
   105  var (
   106  	UART1 = &sercomUSART5
   107  
   108  	UART2 = &sercomUSART0
   109  )
   110  
   111  func init() {
   112  	// turn on neopixel
   113  	D7.Configure(PinConfig{Mode: PinOutput})
   114  	D7.High()
   115  }
   116  
   117  // I2C on the Feather M4 CAN.
   118  var (
   119  	I2C0 = sercomI2CM2
   120  )
   121  
   122  // SPI on the Feather M4 CAN.
   123  var SPI0 = sercomSPIM1
   124  
   125  // CAN on the Feather M4 CAN.
   126  var (
   127  	CAN0 = CAN{
   128  		Bus: sam.CAN0,
   129  	}
   130  
   131  	CAN1 = CAN{
   132  		Bus: sam.CAN1,
   133  	}
   134  )
   135  
   136  var (
   137  	DefaultUART = UART1
   138  )