Merge pull request #3865 from djix123/stm32f411ce_i2c

Add default I2C pins for STM32F411CE

Author: dhalbert

ports/stm/boards/stm32f411ce_blackpill/mpconfigboard.h

@@ -42,6 +42,9 @@
 // #define SPI_FLASH_SCK_PIN           (&pin_PA05)
 // #define SPI_FLASH_CS_PIN            (&pin_PA04)
 
+#define DEFAULT_I2C_BUS_SCL (&pin_PB06)
+#define DEFAULT_I2C_BUS_SDA (&pin_PB07)
+
 #define CIRCUITPY_AUTORELOAD_DELAY_MS (500)
 
 #define BOARD_FLASH_SIZE (FLASH_SIZE - 0x2000 - 0xC000)

ports/stm/boards/stm32f411ce_blackpill/pins.c

@@ -35,5 +35,10 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_C14), MP_ROM_PTR(&pin_PC14) },
     { MP_ROM_QSTR(MP_QSTR_C13), MP_ROM_PTR(&pin_PC13) },
     { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_PC13) },
+
+    { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PB07) },
+    { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PB06) },
+
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);