Merge pull request #2440 from adafruit/tannewt-hwm4-uart-pins

Fix Hallowing M4 Express UART pin mapping

Author: dhalbert

ports/atmel-samd/boards/hallowing_m4_express/mpconfigboard.h

@@ -23,8 +23,8 @@
 #define DEFAULT_SPI_BUS_MOSI (&pin_PB23)
 #define DEFAULT_SPI_BUS_MISO (&pin_PB22)
 
-#define DEFAULT_UART_BUS_RX (&pin_PB12)
-#define DEFAULT_UART_BUS_TX (&pin_PB13)
+#define DEFAULT_UART_BUS_RX (&pin_PB13)
+#define DEFAULT_UART_BUS_TX (&pin_PB12)
 
 // USB is always used internally so skip the pin objects for it.
 #define IGNORE_PIN_PA24     1

ports/atmel-samd/boards/hallowing_m4_express/pins.c

@@ -24,10 +24,10 @@ STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_PA22) },
     { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_PB23) },
     { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_PB22) },
-    { MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_PB12) },
-    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PB12) },
-    { MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_PB13) },
-    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PB13) },
+    { MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_PB13) },
+    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PB13) },
+    { MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_PB12) },
+    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PB12) },
     { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PA12) },
     { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PA13) },
     { MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_PA14) },