// use this for OwnAddress1 to configure I2C in master mode #define PYB_I2C_MASTER_ADDRESS (0xfe) extern I2C_HandleTypeDef I2CHandle1; extern I2C_HandleTypeDef I2CHandle2; extern const mp_obj_type_t pyb_i2c_type; void i2c_init0(void); void i2c_init(I2C_HandleTypeDef *i2c);