Cannot detect device over BLE after initializing low power PWM library.

[moroboshidan]

Hi,

I'm using nRF51822 chip and SDK 12.3.0 library to develop the software. We want to control the motors with PWM. But since PWM consumes a lot of power, we decided to use low power PWM library. But once I started using low power PWM, I could not detect my device over BLE anymore, and when I used normal PWM library again, I could detect my device again. What may cause this issue? 

[Simon]

When you say "I could not detect my device over BLE anymore", I assume you mean that you can't see the device advertising.

Have you tried to debug the code? To make sure sd_ble_gap_adv_start() is called correctly. Take a look at this video, that shows the basics of debugging.

Best regards,

Simon

[moroboshidan]

We are using our own PCB with nRF51822 chip. Is it still possible to use the segger embedded studio to debug? Also, when I switched back to normal PWM instead of low power PWM, I could see the device advertising again. Does it mean that low power PWM library interferes BLE advertising?

[Simon]

Have you resolved your issue? https://devzone.nordicsemi.com/f/nordic-q-a/51094/low-power-pwm-library-channel-control