machine: Add support for Adafruit QT2040 board.

src/machine/board_trinkey_qt2040.go

@@ -0,0 +1,63 @@
+//go:build trinkey_qt2040
+// +build trinkey_qt2040
+
+// This file contains the pin mappings for the Adafruit Trinkey QT2040 board.
+//
+// The Trinkey QT2040 is a small development board based on the RP2040 which
+// plugs into a USB A port. The board has a minimal pinout: an integrated
+// NeoPixel LED and a STEMMA QT I2C port.
+//
+// - Product:    https://www.adafruit.com/product/5056
+// - Overview:   https://learn.adafruit.com/adafruit-trinkey-qt2040
+// - Pinouts:    https://learn.adafruit.com/adafruit-trinkey-qt2040/pinouts
+// - Datasheets: https://learn.adafruit.com/adafruit-trinkey-qt2040/downloads
+
+package machine
+
+// Onboard crystal oscillator frequency, in MHz
+const xoscFreq = 12 // MHz
+
+// Onboard LEDs
+const (
+	NEOPIXEL = GPIO27
+	WS2812   = NEOPIXEL
+)
+
+// I2C pins
+const (
+	I2C0_SDA_PIN = GPIO16
+	I2C0_SCL_PIN = GPIO17
+
+	I2C1_SDA_PIN = NoPin
+	I2C1_SCL_PIN = NoPin
+)
+
+// SPI pins
+const (
+	SPI0_SCK_PIN = NoPin
+	SPI0_SDO_PIN = NoPin
+	SPI0_SDI_PIN = NoPin
+
+	SPI1_SCK_PIN = NoPin
+	SPI1_SDO_PIN = NoPin
+	SPI1_SDI_PIN = NoPin
+)
+
+// UART pins
+const (
+	UART0_TX_PIN = NoPin
+	UART0_RX_PIN = NoPin
+	UART_TX_PIN  = UART0_TX_PIN
+	UART_RX_PIN  = UART0_RX_PIN
+)
+
+// USB identifiers
+const (
+	usb_STRING_PRODUCT      = "Trinkey QT2040"
+	usb_STRING_MANUFACTURER = "Adafruit"
+)
+
+var (
+	usb_VID uint16 = 0x239a
+	usb_PID uint16 = 0x8109
+)