Dear Nordic Team,
I had questions concerning the use of the High resolution oscillator
Question 1 :
Could you provide the detailed step needed to enable the HFXO ?
Some previous ticket mentioned that “ NRF_CLOCK->TASKS_HFCLKSTART = 1;” should enable it, is it the only thig to do ?
What about the whole Clock control API of zephyr, is something like “clock_control_on(clock0, CLOCK_CONTROL_NRF_SUBSYS_HF);” needed ?
Eventually, is there a simple example on how to switch the oscillator ?
Question 2:
If the HFXO is enable, will the Zephyr timer use this HFXO for generating time duration ?
(for example if using “k_timer_start(&my_status_timer, K_USEC(200), K_NO_WAIT);” , will the 200us counted using the HFXO ?)
I’ m asking that because we are having issue with very short timer delay , it seems that the zephyr timer can’t handle a value smaller than 100us, because we are using the LFXO 32.768 kHz. For our project we need to be able to generate very short timer duration. (around 10us)
(I’ m using an NRF52840 DK , SDK v2.5.2)
Thanks for you help
Gregoire