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//go:build xiao_rp2040
// +build xiao_rp2040
// This file contains the pin mappings for the Seeed XIAO RP2040 boards.
//
// XIAO RP2040 is a microcontroller using the Raspberry Pi RP2040 chip.
//
// - https://wiki.seeedstudio.com/XIAO-RP2040/
package machine
import (
"device/rp"
"runtime/interrupt"
)
// Digital Pins
const (
D0 Pin = GPIO26
D1 Pin = GPIO27
D2 Pin = GPIO28
D3 Pin = GPIO29
D4 Pin = GPIO6
D5 Pin = GPIO7
D6 Pin = GPIO0
D7 Pin = GPIO1
D8 Pin = GPIO2
D9 Pin = GPIO4
D10 Pin = GPIO3
)
// Analog pins
const (
A0 Pin = D0
A1 Pin = D1
A2 Pin = D2
A3 Pin = D3
)
// Onboard LEDs
const (
NEOPIXEL = GPIO12
WS2812 = GPIO12
NEO_PWR = GPIO11
NEOPIXEL_POWER = GPIO11
LED = GPIO17
LED_RED = GPIO17
LED_GREEN = GPIO16
LED_BLUE = GPIO25
)
// I2C pins
const (
I2C0_SDA_PIN Pin = D4
I2C0_SCL_PIN Pin = D5
I2C1_SDA_PIN Pin = NoPin
I2C1_SCL_PIN Pin = NoPin
)
// SPI pins
const (
SPI0_SCK_PIN Pin = D8
SPI0_SDO_PIN Pin = D10
SPI0_SDI_PIN Pin = D9
SPI1_SCK_PIN Pin = NoPin
SPI1_SDO_PIN Pin = NoPin
SPI1_SDI_PIN Pin = NoPin
)
// Onboard crystal oscillator frequency, in MHz.
const (
xoscFreq = 12 // MHz
)
// UART pins
const (
UART0_TX_PIN = GPIO0
UART0_RX_PIN = GPIO1
UART_TX_PIN = UART0_TX_PIN
UART_RX_PIN = UART0_RX_PIN
)
// UART on the RP2040
var (
UART0 = &_UART0
_UART0 = UART{
Buffer: NewRingBuffer(),
Bus: rp.UART0,
}
)
var DefaultUART = UART0
func init() {
UART0.Interrupt = interrupt.New(rp.IRQ_UART0_IRQ, _UART0.handleInterrupt)
}
// USB CDC identifiers
const (
usb_STRING_PRODUCT = "XIAO RP2040"
usb_STRING_MANUFACTURER = "Seeed"
)
var (
usb_VID uint16 = 0x2e8a
usb_PID uint16 = 0x000a
)
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