RE: Use of Non-Eval Board Custom Hardware

DKarnes — Mon, 18 May 2020 19:24:04 GMT

Thanks. Fixing the clock and related items fixed it.

RE: Use of Non-Eval Board Custom Hardware

Karl Ylvisaker — Mon, 18 May 2020 08:09:18 GMT

Hello,

As Jörg mentions, the SRAM address points to EVENTS_LFCLKSTARTED, which suggests that you clock configuration is incorrect. I suspect that it is the LFCLK source that is the error.
How have you configured your LFCLK source? Is it anything like the following?

// <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

 

// <o> NRF_SDH_CLOCK_LF_ACCURACY  - External clock accuracy used in the LL to compute timing.
 
// <0=> NRF_CLOCK_LF_ACCURACY_250_PPM 
// <1=> NRF_CLOCK_LF_ACCURACY_500_PPM 
// <2=> NRF_CLOCK_LF_ACCURACY_150_PPM 
// <3=> NRF_CLOCK_LF_ACCURACY_100_PPM 
// <4=> NRF_CLOCK_LF_ACCURACY_75_PPM 
// <5=> NRF_CLOCK_LF_ACCURACY_50_PPM 
// <6=> NRF_CLOCK_LF_ACCURACY_30_PPM 
// <7=> NRF_CLOCK_LF_ACCURACY_20_PPM 
// <8=> NRF_CLOCK_LF_ACCURACY_10_PPM 
// <9=> NRF_CLOCK_LF_ACCURACY_5_PPM 
// <10=> NRF_CLOCK_LF_ACCURACY_2_PPM 
// <11=> NRF_CLOCK_LF_ACCURACY_1_PPM 

 

#ifndef NRF_SDH_CLOCK_LF_ACCURACY
#define NRF_SDH_CLOCK_LF_ACCURACY 1
#endif

Best regards,
Karl

RE: Use of Non-Eval Board Custom Hardware

Turbo J — Sat, 16 May 2020 18:36:23 GMT

[quote userid="89965" url="~/f/nordic-q-a/61469/use-of-non-eval-board-custom-hardware"]SRAM address 0x40000104[/quote]

That is peripherial address space and not simply SRAM. Looking into the PS, this is the EVENTS_LFCLKSTARTED address.

In other words, your clock config is still wrong. Search this forum, questions about clock config pop up all the time here.