External crystal 32mhz not working on custom nrf52832 board

RE: External crystal 32mhz not working on custom nrf52832 board

jjifa — Sat, 16 May 2020 21:19:01 GMT

I have the same problem.
It doesn't work only for external crystals.

It used the recommended 12pF in the datasheet.
I used via for the connection between crystal and capacitor.
I will also test it by changing to 8pF and 16pF.

RE: External crystal 32mhz not working on custom nrf52832 board

joshi — Sun, 10 May 2020 21:44:07 GMT

i have received the email that my ticket is closed but i cound not receive any answer ,tet.

please help

RE: External crystal 32mhz not working on custom nrf52832 board

joshi — Sat, 09 May 2020 07:15:34 GMT

well i have debug the code with swd debug in segger studio and found that once it goes to advertising start, it does not make the flag value to one which makes sense that HFcrestal not working , i copy the code for flag from previous post. i think HFCLK is not working and code stuck on epp_error_weak.c . well can u please check my crystal is it ok or can i try 8pf or 16 pf value off c1,c2. one thing same code which is not working on my custom board works on nrf52DK and i have alredy activated LFCLK rc in sdk_config.h.

well any help is appriciated, sir.

RE: External crystal 32mhz not working on custom nrf52832 board

Kenneth — Wed, 06 May 2020 10:48:47 GMT

[quote user=""]i try to connect i manage to connect once and it works but after that i can not connect[/quote]

Is it possible that the application have entered sleep on disconnect or after timeout? Have you enabled logging to UART or SWD so that you can observe what the application is doing?

For instance check what the application is doing on BLE_GAP_EVT_DISCONNECTED event and BLE_ADV_EVT_IDLE event. It can also be that you have an assert, so maybe check app_error_fault_handler() for any asserts.

Best regards,
Kenneth