Add Seeed XAIO RP2040 support (#538)

Fixes #537

README.md

@@ -29,6 +29,7 @@ See https://arduino-pico.readthedocs.io/en/latest/ along with the examples for m
 * Invector Labs Challenger RP2040 LoRa
 * Invector Labs RPICO32
 * Melopero Shake RP2040
+* Seeed XIAO RP2040
 * Solder Party RP2040 Stamp
 * SparkFun ProMicro RP2040
 * uPesy RP2040 DevKit

package/package_pico_index.template.json

@@ -71,6 +71,9 @@
                   {
                      "name": "Invector Labs RPICO32"
                   },
+                  {
+                     "name": "Seeed XIAO RP2040"
+                  },
                   {
                      "name": "Solder Party RP2040 Stamp"
                   },

tools/makeboards.py

@@ -267,6 +267,9 @@ MakeBoard("sparkfun_promicrorp2040", "SparkFun", "ProMicro RP2040", "0x1b4f", "0
 # Upesy
 MakeBoard("upesy_rp2040_devkit", "uPesy", "RP2040 DevKit", "0x2e8a", "0x1007", 250, "UPESY_RP2040_DEVKIT", 2, "boot2_w25q080_2_padded_checksum")
 
+# Seeed
+MakeBoard("seeed_xiao_rp2040", "Seeed", "XAIO RP2040", "0x2e8a", "0x000a", 250, "SEEED_XAIO_RP2040", 2, "boot2_w25q080_2_padded_checksum")
+
 # WIZnet
 MakeBoard("wiznet_5100s_evb_pico", "WIZnet", "W5100S-EVB-Pico", "0x2e8a", "0x1008", 250, "WIZNET_5100S_EVB_PICO", 2, "boot2_w25q080_2_padded_checksum")
 

variants/seeed_xiao_rp2040/pins_arduino.h

+#pragma once
+
+// Pin definitions taken from:
+//    https://www.seeedstudio.com/XIAO-RP2040-v1-0-p-5026.html
+
+// LEDs
+#define PIN_LED        (17u)
+#define PIN_LED_R      (17u)
+#define PIN_LED_G      (16u)
+#define PIN_LED_B      (25u)
+
+// NeoPixel
+#define PIN_NEOPIXEL   (12u)
+#define NEOPIXEL_POWER (11u)
+
+// Serial1
+#define PIN_SERIAL1_TX (0u)
+#define PIN_SERIAL1_RX (1u)
+
+// Serial2 not pinned out
+#define PIN_SERIAL2_TX (31u)
+#define PIN_SERIAL2_RX (31u)
+
+// SPI
+#define PIN_SPI0_MISO  (4u)
+#define PIN_SPI0_MOSI  (3u)
+#define PIN_SPI0_SCK   (2u)
+#define PIN_SPI0_SS    (31u) // not pinned out
+
+// Not pinned out
+#define PIN_SPI1_MISO  (31u)
+#define PIN_SPI1_MOSI  (31u)
+#define PIN_SPI1_SCK   (31u)
+#define PIN_SPI1_SS    (31u)
+
+// Wire
+#define PIN_WIRE0_SDA  (6u)
+#define PIN_WIRE0_SCL  (7u)
+
+// Wire1 not pinned out
+#define PIN_WIRE1_SDA  (31u)
+#define PIN_WIRE1_SCL  (31u)
+
+#define SERIAL_HOWMANY (2u)
+#define SPI_HOWMANY    (1u)
+#define WIRE_HOWMANY   (1u)
+
+#include "../generic/common.h"