board/nano-rp2040: pins and blinking led

src/machine/board_nano-rp2040.go

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+// +build nano_rp2040
+
+// This contains the pin mappings for the Arduino Nano RP2040 Connect board.
+//
+// Sometimes the board is not detected even when the board is connected to your computer.
+// To solve this, place a jumper wire between the REC and GND pins, then connect the board to your computer.
+//
+// For more information, see: https://store.arduino.cc/nano-rp2040-connect
+// Also
+// - Datasheets: https://docs.arduino.cc/hardware/nano-rp2040-connect
+// - Nano RP2040 Connect technical reference: https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-01-technical-reference
+//
+package machine
+
+// Digital Pins
+const (
+	D2  Pin = GPIO25
+	D3  Pin = GPIO15
+	D4  Pin = GPIO16
+	D5  Pin = GPIO17
+	D6  Pin = GPIO18
+	D7  Pin = GPIO19
+	D8  Pin = GPIO20
+	D9  Pin = GPIO21
+	D10 Pin = GPIO5
+	D11 Pin = GPIO7
+	D12 Pin = GPIO4
+	D13 Pin = GPIO6
+	D14 Pin = GPIO26
+	D15 Pin = GPIO27
+	D16 Pin = GPIO28
+	D17 Pin = GPIO29
+	D18 Pin = GPIO12
+	D19 Pin = GPIO13
+)
+
+// Analog pins
+const (
+	A0 Pin = ADC0
+	A1 Pin = ADC1
+	A2 Pin = ADC2
+	A3 Pin = ADC3
+)
+
+// Onboard LED
+const (
+	LED = GPIO6
+)
+
+// UART1 pins
+const (
+	UART_TX_PIN Pin = GPIO0
+	UART_RX_PIN Pin = GPIO1
+)
+
+// I2C pins
+const (
+	SDA_PIN Pin = GPIO12
+	SCL_PIN Pin = GPIO13
+)
+
+// SPI pins
+const (
+	SPI0_SCK_PIN Pin = GPIO6
+	SPI0_SDO_PIN Pin = GPIO7
+	SPI0_SDI_PIN Pin = GPIO4
+)
+
+// NINA-W102 Pins
+const (
+	NINA_SCK Pin = GPIO14
+	NINA_SDO Pin = GPIO11
+	NINA_SDI Pin = GPIO8
+
+	NINA_CS     Pin = GPIO9
+	NINA_ACK    Pin = GPIO10
+	NINA_GPIO0  Pin = GPIO0
+	NINA_RESETN Pin = GPIO3
+
+	NINA_TX Pin = GPIO9
+	NINA_RX Pin = GPIO8
+)
+
+// Onboard crystal oscillator frequency, in MHz.
+const (
+	xoscFreq = 12 // MHz
+)
+
+// USB CDC identifiers
+// https://github.com/arduino/ArduinoCore-mbed/blob/master/variants/NANO_RP2040_CONNECT/pins_arduino.h
+const (
+	usb_STRING_PRODUCT      = "Nano RP2040 Connect"
+	usb_STRING_MANUFACTURER = "Arduino"
+)
+
+var (
+	usb_VID uint16 = 0x2341
+	usb_PID uint16 = 0x005e
+)

targets/nano-rp2040.json

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+{
+    "inherits": [
+        "rp2040"
+    ],
+    "build-tags": ["nano_rp2040"],
+    "linkerscript": "targets/pico.ld",
+    "extra-files": [
+        "targets/pico_boot_stage2.S"
+    ]
+}