This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TIDA-00489: Current peaks caused by HWI detecting a movement

Part Number: TIDA-00489
Other Parts Discussed in Thread: CC1310

Hey guys,

we are using the TIDA 00489 layout and have some test sensors here (no changes made to layout). We are counting the movements detected by the sensor using HWI and increment a counter each time this HWI is triggered. We are using the sensor collector TI 15.4 stack for network communication, however the current measurements we have done so far completely coincide with the ones specified by TI regarding idle, polling peaks, data message peaks a.s.o. But we noticed minor peaks, as the right one in the below picture. It takes ca. 5ms and goes up to approx. 2.4mA.

When the sensor was covered, so no motions were detected, no such peaks were measured, if a lot of movements have been present, the number of measured values by the sensor matched the amount of small peaks we could see in the graph over 10s. So we are very sure, that these peaks originate from the HWI.

I was wondering if we could lower the current consumption by means of doing some changes in the software? Since we are only incrementing a counter maybe during the ISR we could apply some further power restrains?

I welcome any suggestion

kind regards