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    Cannot get chip ID BHA260

    Cannot get chip ID BHA260

    Minh
    New Poster

    Hi,

    I'm trying to communicate nrF52832 and  BHA260AB shuttle board but I cannot get the chip ID. I checked with the logic analyzer and saw the ACK is returned. 

    Minh_0-1635927327126.png

    this is I2C read function:

    int8_t twi_read(uint8_t sl_addr, uint8_t reg_addr, uint8_t* output, uint8_t len)
    {
    ret_code_t err_code;

    err_code = nrf_drv_twi_tx(&m_twi, sl_addr, &reg_addr, 1, false);
    APP_ERROR_CHECK(err_code);

    nrf_delay_us(300); //not work if no delay
    NRF_LOG_FLUSH();

    err_code = nrf_drv_twi_rx(&m_twi, sl_addr, output, len);
    APP_ERROR_CHECK(err_code);

    nrf_delay_us(500); //delay to wait for the response

    if(rx_done)
    return 0;
    else
    return -1;
    }

    Please tell me what is the problem here? thanks.

     

    15 REPLIES 15

    BSTRobin
    Community Moderator
    Community Moderator

    Hello Minh,

    As long as sensor is not in PWRUP state, you COULD read the chip ID, even in sleep mode.

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