Starting with Stock BTT-Config and Old Configs as Backup

ini/samd51.ini

@@ -0,0 +1,26 @@
+#
+# Marlin Firmware
+# PlatformIO Configuration File
+#
+
+#################################
+#                               #
+#      SAMD51 Architecture      #
+#                               #
+#################################
+
+#
+# Adafruit Grand Central M4 (Atmel SAMD51P20A ARM Cortex-M4)
+#
+[env:SAMD51_grandcentral_m4]
+platform       = atmelsam
+board          = adafruit_grandcentral_m4
+build_flags    = ${common.build_flags} -std=gnu++17
+build_unflags  = -std=gnu++11
+src_filter     = ${common.default_src_filter} +<src/HAL/SAMD51>
+lib_deps       = ${common.lib_deps}
+  SoftwareSerialM
+extra_scripts  = ${common.extra_scripts}
+  pre:buildroot/share/PlatformIO/scripts/SAMD51_grandcentral_m4.py
+custom_marlin.SDSUPPORT = SdFat - Adafruit Fork, Adafruit SPIFlash
+debug_tool     = jlink