CCS/LAUNCHXL-CC26X2R1: Low Power Issues with pinShutdown Example

Cameron Perl

Part Number: LAUNCHXL-CC26X2R1
Other Parts Discussed in Thread: ENERGYTRACE

Tool/software: Code Composer Studio

Hi!

I am currently having issues with the pinShutdown example on the CC26X2R1. My current setup for the board has all headers removed excluding the power and LED headers. When running EnergyTrace and tapping a button, it seems to sometimes enter low power mode for some time, but then wakes up without further input. Did I setup the device incorrectly? I would appreciate any help in this matter. Below are my two readings from EnergyTrace.

Also, a customer is looking to integrate this example with the ULPSENSE booster pack and replace the buttons with the capacitive touch sensors. Does anyone have thoughts on this and what the power consumption might look like to have the board scanning for a tap to wake it up from the low power mode?

Finally, in the related thread, Fredrik mentioned removing a resistor to reduce current further, would this damage the boards capabilities at all?

Thanks,

Cameron

over 6 years ago

0 Cameron Perl over 6 years ago

TI__Expert 5465 points

I'm also trying to run pinStandby with no luck - perhaps I am doing something wrong on CCS?

0 FI over 6 years ago in reply to Cameron Perl

TI__Mastermind 21280 points

Hi,

Do the examples work without using the energy trace feature? Try using external power supply and ammeter to see if the example works as intended (shut down BTN2 and wake up BTN1).

Try rfPacketTx example in the SDK as well.

http://dev.ti.com/tirex/content/simplelink_cc26x2_sdk_2_10_00_44/docs/ble5stack/ble_user_guide/html/energy-trace/energy-trace.html

As for ULPSENSE booster pack, you can use Sensor Controller Studio's Capacitive Touch Data Logger example code to evaluate current consumption.

Regards,

0 Fredrik K over 6 years ago in reply to FI

TI__Guru** 106705 points

Hi Cameron,

For details on how to do current measurements, you should look at www.ti.com/lit/pdf/swra478

For capacitive touch, you should look at http://dev.ti.com/tirex/explore/node?node=AIdG1E8mGWFmQcmU00zEOw__pTTHBmu__LATEST

Regards,
Fredrik

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CCS/LAUNCHXL-CC26X2R1: Low Power Issues with pinShutdown Example