not working

4 files changed, 35 insertions, 4 deletions

diff --git a/ports/atmel-samd/board_busses.c b/ports/atmel-samd/board_busses.c
index 52aa5a366..59f9b8064 100644
--- a/ports/atmel-samd/board_busses.c
+++ b/ports/atmel-samd/board_busses.c
@@ -26,6 +26,8 @@
 
 #include "shared-bindings/busio/I2C.h"
 #include "shared-bindings/busio/SPI.h"
+//#include "shared-bindings/busio/UART.h"
+
 #include "shared-bindings/microcontroller/Pin.h"
 #include "mpconfigboard.h"
 #include "pins.h"
@@ -34,13 +36,10 @@
 
 
 #if !defined(DEFAULT_I2C_BUS_SDA) || !defined(DEFAULT_I2C_BUS_SCL)
-
     STATIC mp_obj_t board_i2c(void) {
-        //board_i2c_obj = NULL;
         mp_raise_NotImplementedError("No default I2C bus");
         return NULL;
     }
-
 #else
     STATIC mp_obj_t i2c_singleton = NULL;
 
@@ -59,7 +58,6 @@
 
     }
 #endif
-
 MP_DEFINE_CONST_FUN_OBJ_0(board_i2c_obj, board_i2c);
 
 #if !defined(DEFAULT_SPI_BUS_SCK) || !defined(DEFAULT_SPI_BUS_MISO) || !defined(DEFAULT_SPI_BUS_MOSI)
@@ -88,3 +86,28 @@ MP_DEFINE_CONST_FUN_OBJ_0(board_i2c_obj, board_i2c);
     }
 #endif
 MP_DEFINE_CONST_FUN_OBJ_0(board_spi_obj, board_spi);
+
+#if !defined(DEFAULT_SERIAL_BUS_RX) || !defined(DEFAULT_SERIAL_BUS_TX)
+    STATIC mp_obj_t board_serial(void) {
+        mp_raise_NotImplementedError("No default serial bus");
+        return NULL;
+    }
+#else
+    STATIC mp_obj_t serial_singleton = NULL;
+
+    STATIC mp_obj_t board_serial(void) {
+        if (serial_singleton == NULL) {
+            //busio_uart_obj_t *self = m_new_obj(busio_uart_obj_t);
+            //self->base.type = &busio_uart_type;
+
+            assert_pin_free(DEFAULT_SERIAL_BUS_RX);
+            assert_pin_free(DEFAULT_SERIAL_BUS_TX);
+
+            //common_hal_busio_uart_construct(self, DEFAULT_SERIAL_BUS_TX, DEFAULT_SERIAL_BUS_RX, 9600, 8, PARITY_NONE, 1, 1000, 64);
+            //serial_singleton = (mp_obj_t)self;
+            serial_singleton = NULL;
+        }
+        return serial_singleton;
+    }
+#endif
+MP_DEFINE_CONST_FUN_OBJ_0(board_serial_obj, board_serial);
\ No newline at end of file
diff --git a/ports/atmel-samd/board_busses.h b/ports/atmel-samd/board_busses.h
index d0cd5dbf7..64e937a69 100644
--- a/ports/atmel-samd/board_busses.h
+++ b/ports/atmel-samd/board_busses.h
@@ -33,4 +33,7 @@ extern mp_obj_fun_builtin_fixed_t board_i2c_obj;
 void board_spi(void);
 extern mp_obj_fun_builtin_fixed_t board_spi_obj;
 
+void board_serial(void);
+extern mp_obj_fun_builtin_fixed_t board_serial_obj;
+
 #endif  // MICROPY_INCLUDED_ATMEL_SAMD_BOARD_BUSSES_H
diff --git a/ports/atmel-samd/boards/gemma_m0/mpconfigboard.h b/ports/atmel-samd/boards/gemma_m0/mpconfigboard.h
index 2527b9d06..46866fdb4 100644
--- a/ports/atmel-samd/boards/gemma_m0/mpconfigboard.h
+++ b/ports/atmel-samd/boards/gemma_m0/mpconfigboard.h
@@ -15,6 +15,10 @@
 #define DEFAULT_I2C_BUS_SCL (&pin_PA05)
 #define DEFAULT_I2C_BUS_SDA (&pin_PA04)
 
+#define DEFAULT_SERIAL_BUS_RX (&pin_PA05)
+#define DEFAULT_SERIAL_BUS_TX (&pin_PA04)
+
+
 #include "internal_flash.h"
 
 #define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - 0x010000)
diff --git a/ports/atmel-samd/boards/gemma_m0/pins.c b/ports/atmel-samd/boards/gemma_m0/pins.c
index 9fe2bbd6f..3cb3b795f 100644
--- a/ports/atmel-samd/boards/gemma_m0/pins.c
+++ b/ports/atmel-samd/boards/gemma_m0/pins.c
@@ -22,5 +22,6 @@ STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_APA102_SCK),  MP_ROM_PTR(&pin_PA01) },
     { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
     { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
+    { MP_ROM_QSTR(MP_QSTR_SERIAL), MP_ROM_PTR(&board_i2c_obj) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_global_dict_table);