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RTOS/LAUNCHXL-CC1350: How are the sensors(temp, humidity and light) in the example of connector and sensor project at TI 15.4 Stack connected to LAUNCHXL-CC1350 board?

Adrian Bian
Prodigy 20 points
Part Number: LAUNCHXL-CC1350
Other Parts Discussed in Thread: CC1350,

Tool/software: TI-RTOS

Hallo, everyone

I'm currently developing a project based on custom cc1350 boards and need to build a star-network. Now I could make a one-to-one network based on the example project Sensor and Collector from TI 15.4 Stack, the temperature value could be shown to a uart port, but always with a value of around 32, probably means 0.32 Celsius degree?   

Actually, I need an ADC channel to sample the voltage signal on the sensor board and send to the collector,  that's why I asked here if anyone knows how the sensors are connected to LAUNCHXL-CC1350 board? the board get the temperature signal digitally or use adc channel to sample an analog tempreture signal?

Many thanks in advance!

  • 0
    Prodigy 20 points
    Just noticed that there is on-chip temp sensor ...
  • 0
    Guru 735685 points
    It reads internal temperature sensor.
  • 0
    TI__Guru**** 317180 points

    As far as I can see the the reading of the sensor is done in the sensor.c by:

    /*!
 * @brief   Manually read the sensors
 */
static void readSensors(void)
{
#if defined(TEMP_SENSOR)
    /* Read the temp sensor values */
    tempSensor.ambienceTemp = Ssf_readTempSensor();
    tempSensor.objectTemp =  tempSensor.ambienceTemp;
#endif
}
     Public function defined in ssf.h
 */
int16_t Ssf_readTempSensor(void)
{
#ifdef POWER_MEAS
    return (0);
#else
    return ((int16_t)AONBatMonTemperatureGetDegC());
#endif /* POWER_MEAS */
}

    Meaning that the the BATMON is used (see chapter 18 in )

    So if the sensor returns 32 I assume it's 32 degrees in the chip (have you tried to cool it down some?)

    You should be able to add/ change sensors to this part of the code and to use the ADC to read an external sensor. (Or I2C if the sensor is digital)