nRF52810 clock configuration

RE: nRF52810 clock configuration

Håkon Alseth — Mon, 29 Apr 2019 06:48:59 GMT

Thanks for the assert log. It looks like you are observing this issue: https://devzone.nordicsemi.com/f/nordic-q-a/40697/how-to-resolve-the-error-nrf_error_no_mem-at-the-case-app_uart_communication_error-in-uart_event_handle/160765#160765

Could you try the workaround posted here and see if that works?

Kind regards,

Håkon

RE: nRF52810 clock configuration

yunusemrecatalcam — Sat, 27 Apr 2019 09:28:42 GMT

It looks like crashing at the case APP_UART_COMMUNICATION_ERROR in uart_event_handle

RE: nRF52810 clock configuration

Håkon Alseth — Tue, 23 Apr 2019 08:11:41 GMT

Try first to figure out where the error occurs (First step, add "DEBUG" define to the preprocessor defines):

https://devzone.nordicsemi.com/b/blog/posts/an-introduction-to-error-handling-in-nrf5-projects

Once you find this, it should give you a err_code, line number, and filename for where the assertion occurs.

Cheers,

Håkon

RE: nRF52810 clock configuration

yunusemrecatalcam — Sat, 20 Apr 2019 09:52:10 GMT

Yes, I've configured as Hakon said.

RE: nRF52810 clock configuration

awneil — Sat, 20 Apr 2019 09:38:36 GMT

[quote userid="73366" url="~/f/nordic-q-a/37014/nrf52810-clock-configuration/182862"]I'm having nearly the same issue[/quote]

So have you applied the same solution - what Hakon said ?

RE: nRF52810 clock configuration

yunusemrecatalcam — Sat, 20 Apr 2019 09:28:29 GMT

Hi, I'm having nearly the same issue. I am using s132 6.1.1 with SDK 15.2, my code works completely fine on Development Kit but it doesn't boot up on our custom board which doesn't have a 32Khz oscillator. I tried debugging with Keil, it goes to system_reset every time it starts to work. What should I do?

Thanks.

RE: nRF52810 clock configuration

Håkon Alseth — Tue, 31 Jul 2018 13:21:20 GMT

Hi,

In your sdk_config.h, you need to set these three defines in order to use the internal 32k RC oscillator:

// </h> 
//==========================================================

// <h> Clock - SoftDevice clock configuration

//==========================================================
// <o> NRF_SDH_CLOCK_LF_SRC  - SoftDevice clock source.
 
// <0=> NRF_CLOCK_LF_SRC_RC 
// <1=> NRF_CLOCK_LF_SRC_XTAL 
// <2=> NRF_CLOCK_LF_SRC_SYNTH 

#ifndef NRF_SDH_CLOCK_LF_SRC
#define NRF_SDH_CLOCK_LF_SRC 0
#endif

// <o> NRF_SDH_CLOCK_LF_RC_CTIV - SoftDevice calibration timer interval. 
#ifndef NRF_SDH_CLOCK_LF_RC_CTIV
#define NRF_SDH_CLOCK_LF_RC_CTIV 16
#endif

// <o> NRF_SDH_CLOCK_LF_RC_TEMP_CTIV - SoftDevice calibration timer interval under constant temperature. 
// <i> How often (in number of calibration intervals) the RC oscillator shall be calibrated
// <i>  if the temperature has not changed.

#ifndef NRF_SDH_CLOCK_LF_RC_TEMP_CTIV
#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2
#endif

Best regards,

Håkon