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    BME680 gas resistanc no output

    BME680 gas resistanc no output

    rex
    Member

    My code is exactly the same as the code here,https://github.com/BoschSensortec/BME680_driver#example-for-reading-all-sensor-data

    But there is a issue, printf (", G: %d ohms", data.gas_resistance); there is no output

    Other data output is normal。

    Reading sensor data

    Example for reading all sensor data

        while(1)
        {
            user_delay_ms(meas_period); /* Delay till the measurement is ready */
    
            rslt = bme680_get_sensor_data(&data, &gas_sensor);
    
            printf("T: %.2f degC, P: %.2f hPa, H %.2f %%rH ", data.temperature / 100.0f,
                data.pressure / 100.0f, data.humidity / 1000.0f );//normal
            /* Avoid using measurements from an unstable heating setup */
            if(data.status & BME680_GASM_VALID_MSK)
                printf(", G: %d ohms", data.gas_resistance);//no output
    
            printf("\r\n");
    
            /* Trigger the next measurement if you would like to read data out continuously */
            if (gas_sensor.power_mode == BME680_FORCED_MODE) {
                rslt = bme680_set_sensor_mode(&gas_sensor);
            }
        }

     

    -----------------------------------------------------------------------------------------------------------------------------------------------------------------

    This is the data I read and write, I use i2c

    write to 0x76 ack data: 0x74
    read to 0x76 ack data: 0x8C
    write to 0x76 ack data: 0x74 0x8D
    write to 0x76 ack data: 0x1D
    read to 0x76 ack data: 0x80 0x00 0x51 0xF7 0x30 0x7B 0x0A 0x50 0x52 0xC5 0x80 0x00 0x00 0x3C 0xB6
    write to 0x76 ack data: 0x74
    read to 0x76 ack data: 0x8C
    write to 0x76 ack data: 0x74 0x8D
    write to 0x76 ack data: 0x1D
    read to 0x76 ack data: 0x80 0x00 0x51 0xF7 0x30 0x7B 0x0A 0x40 0x52 0xC3 0x80 0x00 0x00 0x3B 0x36

     

     

    10 REPLIES 10

    Hi,minhwan

     

     

     

     

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