Initial support for XIAO RP2040

src/machine/board_xiao-rp2040.go

@@ -0,0 +1,79 @@
+//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
+
+// 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 = GPIO3
+	D10 Pin = GPIO4
+)
+
+// Analog pins
+const (
+	A0 Pin = D0
+	A1 Pin = D1
+	A2 Pin = D2
+	A3 Pin = D3
+)
+
+// Onboard LEDs
+const (
+	NEOPIXEL = GPIO12
+
+	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 = D9
+	SPI0_SDI_PIN Pin = D10
+
+	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
+)
+
+// USB CDC identifiers
+const (
+	usb_STRING_PRODUCT      = "XIAO RP2040"
+	usb_STRING_MANUFACTURER = "Seeed"
+)
+
+var (
+	usb_VID uint16 = 0x2e8a
+	usb_PID uint16 = 0x000a
+)