16MHz Crystal not running

[jinsheng20]

If initialized nrf_gzll_enable()； 

16MHz Crystal not running

sdk 11

board pca10028

no softdevice

[Vidar Berg]

Hi,

Does the crystal start if you write directly to the clock register from the application? 

    NRF_CLOCK->TASKS_HFCLKSTART = 1;
    while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0);

[jinsheng20]

I'm wirted initial crystal, no write  nrf_gzll_enable()； crystal is runing  

[Vidar Berg]

I have not managed to reproduce that here. So if I understand this correctly, the HF crystal becomes stopped after calling nrf_gzll_enable()?  Do you see the same if you try the \examples\proprietary_rf\gzll\gzll_ack_payload\pca10028\host_ack_payload example?