11-07-2023 08:39 AM
I am working on the BHI160B shuttle board connected to an STM32F411.I am working on this example(BHI160B_ReferenceCode) I have integrated the library into my STM project, and I have determined that the I2C address of my BHI160B shuttle board 3.0 is 0x29. The next step was to modify the read/write operations in the bhy_support.c driver file as follows:
int8_t sensor_i2c_write(uint8_t addr, uint8_t reg, uint8_t *p_buf, uint16_t size){
HAL_I2C_Mem_Write(&hi2c1, (uint16_t) addr, (uint16_t) reg, I2C_MEMADD_SIZE_8BIT, p_buf, size,HAL_MAX_DELAY);
}
int8_t sensor_i2c_read(uint8_t addr, uint8_t reg, uint8_t *p_buf, uint16_t size){
HAL_I2C_Mem_Read(&hi2c1, (uint16_t) addr, (uint16_t) reg,I2C_MEMADD_SIZE_8BIT,p_buf, size, HAL_MAX_DELAY);
}
I connected the Shuttle Board to my NUCLEO board like this:
___J1___|___NUCLEO___
1/2 | 3.3V
3 | GND
2 | PB7 -> I2C1_SCL
4 | PB6 -> I2C1_SDA
The problem occurs during initialization, specifically within the "bhy_init" function, when attempting to read (BHY_BUS_READ_FUNC) the BHY_I2C_REG_PRODUCT_ID_ADDR register (0x90). It gets stuck in the HAL function (HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout).
BHY_RETURN_FUNCTION_TYPE bhy_init(struct bhy_t *bhy) { /* variable used for return the status of communication result*/ BHY_RETURN_FUNCTION_TYPE com_rslt = BHY_COMM_RES; u8 v_data_u8 = BHY_INIT_VALUE; /* assign bhy ptr */ p_bhy = bhy; com_rslt = p_bhy->BHY_BUS_READ_FUNC(p_bhy->device_addr, BHY_I2C_REG_PRODUCT_ID_ADDR, &v_data_u8, BHY_GEN_READ_WRITE_LENGTH); /* read product Id */
p_bhy->product_id = v_data_u8; return com_rslt; }
11-07-2023 10:26 AM
Hi malekattia,
According your description, can you check if pin 9(SA_GPIO7) of BHI160B is connected to a high level(you used BHI160B address 0x29) after being powered on? Is pin 23(SCK) and pin 24(SDA) connected to a pull-up resistor?
And make sure you strictly refer to example code(BHI160B_ReferenceCode).