Hello Belaya, This is sensor initialization code on STM32, please refer it. /*! * @brief Initializes BHY smart sensor and its required connections * */ int8_t bhy_initialize_support(void) { uint8_t tmp_retry = RETRY_NUM; bhy.bus_write = &I2Cx_Write; bhy.bus_read = &I2Cx_Read; bhy.delay_msec = &bhy_delay_msec; bhy.device_addr = BHY_I2C_SLAVE_ADDRESS<<1; bhy_init(&bhy); bhy_set_reset_request(BHY_RESET_ENABLE);; while(tmp_retry--) { bhy_get_product_id(&bhy.product_id); if(PRODUCT_ID_7183 == bhy.product_id) { return BHY_SUCCESS; } bhy_delay_msec(BHY_PARAMETER_ACK_DELAY); } return BHY_PRODUCT_ID_ERROR; } /*! * @brief Initiates a delay of the length of the argument in milliseconds * * @param[in] msec Delay length in terms of milliseconds * */ void bhy_delay_msec(uint32_t msec) { HAL_Delay(msec); } ... View more

Hello Belaya, STM32 is 32 bit machine, data type define will be the following code in bhy.h. /*signed integer types*/ typedef signed char s8;/**< used for signed 8bit */ typedef signed short int s16;/**< used for signed 16bit */ typedef signed int s32;/**< used for signed 32bit */ /*unsigned integer types*/ typedef unsigned char u8;/**< used for unsigned 8bit */ typedef unsigned short int u16;/**< used for unsigned 16bit */ typedef unsigned int u32;/**< used for unsigned 32bit */ ... View more