CC1310 / CC1350 (sensortag) VCC (battery) monitor

[manro 0]

Hi everyone,

how can i read VCC on cc1310 launchpad respectively cc1350 sensortag with energia?

I tried this, but without success:

int getVCC() {
  
 analogReference(INTERNAL2V5);
 int data = (int)map(analogRead(A0), 0, 1023, 0, 5000);
  
 return data;  
}

@Rei Vilo what do you think?

[Rei Vilo 692]

Have a look at the AON always on functions on SWCU117H Chapter 18 Battery Monitor and Temperature Sensor.

[manro 0]

Ok, I understand but how can i read BATMON Registers in energia?

[manro 0]

just like this?

#include <driverlib/aon_batmon.h>
...
  
void setup() {

  AONBatMonEnable();
  ...
}
  
void loop() {
  int BATstatus = AONBatMonBatteryVoltageGet();
  ...
}

 

[Rei Vilo 692]

Have you tried? It is that simple.

But you may want to convert it into mV. See https://e2e.ti.com/support/wireless-connectivity/bluetooth/f/538/p/480930/1732219

The same code works on the CC1352 as well.

[manro 0]

yes, i forgot convert value to millivolts, whole code is:

#include <driverlib/aon_batmon.h>
...
  
void setup() {

  AONBatMonEnable();
  ...
}
  
void loop() {
  int BATstatus = AONBatMonBatteryVoltageGet();
  BATstatus = (BATstatus * 125) >> 5;
  ...
}

so I started researching libraries in ...\power\hardware\cc13xx\4.9.1\system\source folder. I know that even you @Rei Vilo,are the author of libraries for several sensors, but I tried to import #include <ti/mw/sensors/SensorBmp280.h> and then call SensorBmp280_init() in setup function but something is wrong: undefined reference to `SensorBmp280_init'

[Rei Vilo 692]

Have a look at the Weather Sensors Library available at https://github.com/rei-vilo/SensorsWeather_Library

[manro 0]

@Rei Vilo as i wrote, i know about Weather Sensors Library and implementing communication with i2c sensors is straightforward.

I was just wondering why I'm getting this error.

[Rei Vilo 692]

Possible reasons:

• The ti/mw/sensors/SensorBmp280.h library is not designed for Energia.
• Other files may be needed.

That's why I've recommended the Weather Sensors Library designed for Energia. I haven't read any mention to the Weather Sensors Library library before on this thread.

For the ti/mw/sensors/SensorBmp280.h library, you may ask the E2E forum directly.