Fixed generic PIN_LED and SPI0 Pin assignment on WIZnet W55RP20-EVB-Pico. (#2956)

* Update pins_arduino.h

Changed PIN_LED to match USERLED on PCB. Removed unavailable pins from SPI0 connection.

* Update pins_arduino.h

Uncommented SPI0 pins and reassigned them over GPIO 2,3,4,5.

Author: RicardoJCMarques

variants/wiznet_55rp20_evb_pico/pins_arduino.h

@@ -1 +1,40 @@
-#include "../generic/pins_arduino.h"
+#pragma once
+
+// Pin definitions taken from:
+//    https://datasheets.raspberrypi.org/pico/pico-datasheet.pdf
+
+
+// LEDs
+#define PIN_LED        (19u)
+
+// Serial
+#define PIN_SERIAL1_TX (0u)
+#define PIN_SERIAL1_RX (1u)
+
+#define PIN_SERIAL2_TX (8u)
+#define PIN_SERIAL2_RX (9u)
+
+// SPI
+// Default SPI0 pins are used internally and are unavailable on this board. To use SPI0 other peripherals must be sacrificed.
+#define PIN_SPI0_MISO  (2u) // 16u is connected to the buck-boost converted.
+#define PIN_SPI0_MOSI  (3u) // 19u is connected to USERLED, defined as PIN_LED.
+#define PIN_SPI0_SCK   (4u) // 18u is connected to a voltage divider on VBUS.
+#define PIN_SPI0_SS    (5u) // 17u doesn't even show up in the schematics.
+
+#define PIN_SPI1_MISO  (12u)
+#define PIN_SPI1_MOSI  (15u)
+#define PIN_SPI1_SCK   (14u)
+#define PIN_SPI1_SS    (13u)
+
+// Wire
+#define PIN_WIRE0_SDA  (4u)
+#define PIN_WIRE0_SCL  (5u)
+
+#define PIN_WIRE1_SDA  (26u)
+#define PIN_WIRE1_SCL  (27u)
+
+#define SERIAL_HOWMANY (3u)
+#define SPI_HOWMANY    (2u)
+#define WIRE_HOWMANY   (2u)
+
+#include "../generic/common.h"