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    BNO055 cannot read chip id

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    BNO055 cannot read chip id

    Hello everyone. I am trying to use bno055 with stm32f4 but I can't read it. I tried very hard but it doesn't return anything. I used HAL_I2C_Mem_Read(&hi2c1,IMU_ADRESS,0x00, 1, id, 1,100) function. It is very urgent. What might be the problem? How can I solve it and is there anyone who has experience with using this sensor with the stm32f4 discovery board?

    PS: I think there isn't any problem with the wiring because the HAL_IsDeviceReady function returns HAL_OK.

     

    #bno055 #i2c #stm32f4

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    Re: BNO055 cannot read chip id

    Hi,

    Thanks for your inquiry.

    Please refer to BNO055 quick start guide app note online at https://www.bosch-sensortec.com/media/boschsensortec/downloads/application_notes_1/bst-bno055-an007.... for more information. Please make sure you have set the right I2C slave address, added two 10K Ohms pull-up resistors on I2C bus and set STM32 MCU I2C clock frequency to 100KHz, etc.

    Please use a USB logic analyzer to capture the I2C transactions for debugging. If there is still a problem, then please contact STM32 FAE for support.

    Thanks.

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