HFXtal doesn't start

RE: HFXtal doesn't start

Einar Thorsrud — Wed, 03 Apr 2019 06:57:28 GMT

Hi,

Please continue in the other thread, as it seems to cover the same issue.

RE: HFXtal doesn't start

Sergio T — Tue, 02 Apr 2019 16:17:40 GMT

Hi Einar:

In the meantime the code is running without the power_manage() call in the main loop. I still don't get it why it doesn't work but I'll try to find out.
It would be great if I could debug directly on my target board. Can I do it through the nRF51 DK SWDIO and SWDCLK lines? I use SES as development environment.

RE: HFXtal doesn't start

Einar Thorsrud — Tue, 02 Apr 2019 13:04:35 GMT

Hi,

Have you tried to debug your application? What state is it in? How do you see that the 16 MHz crystal does not start? Note that the crystal is not started by default, as the internal 16 MHz RC oscillator is used initially. The SoftDevice will start the crystal oscillator when it needs an accurate clock for the radio, and the application can choose to start it in case it needs an accurate clock (for instance for a timer or similar).