Initial commit. Unusable Marlin 2.0.5.3 core without any custimization.

Marlin/src/HAL/SAMD51/spi_pins.h

@@ -0,0 +1,54 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#ifdef ADAFRUIT_GRAND_CENTRAL_M4
+
+ /*
+  * AGCM4 Default SPI Pins
+  *
+  *         SS    SCK   MISO   MOSI
+  *       +-------------------------+
+  *  SPI  | 53    52     50     51  |
+  *  SPI1 | 83    81     80     82  |
+  *       +-------------------------+
+  * Any pin can be used for Chip Select (SS_PIN)
+  */
+  #ifndef SCK_PIN
+    #define SCK_PIN       52
+  #endif
+  #ifndef MISO_PIN
+    #define MISO_PIN      50
+  #endif
+  #ifndef MOSI_PIN
+    #define MOSI_PIN      51
+  #endif
+  #ifndef SDSS
+    #define SDSS          53
+  #endif
+
+#else
+
+  #error "Unsupported board!"
+
+#endif
+
+#define SS_PIN        SDSS