Configuration changes from nRF52832-DK to BL654PA module

[michael_sensor]

Hi Guys

I recently made my own PCB for a project. On the PCB I am using a Laird BL654PA Module with external antenna. All the I/O's work great but im struggling with the BLE on the chip.

I'm trying to run the ble_beacon example which works fine on the 52832 DK and my Samsung. But however if I flash it to the BL654PA it doesn't work allthought it is able to flash the software and the softdevice. 

Im using:

- SDK16

- nRF52832-DK as a programmer

- S140 Soft device

- BL654PA Module

Somehow I feel like that I have to change a few parameters in the sdk_config.h file but I dont know what exactly because I am a newbie. I already found out that I have to eneable "NRF_LOG_BACKEND_RTT_ENABLED" to get some log informations from the J-Link RTT Viewer.

I also found a post about the external crystal... however I am using the internal crystal from the BL654PA and changed the settings according to this post: https://devzone.nordicsemi.com/f/nordic-q-a/46564/error-133-0x85-gatt-error-on-nrf52840/183860#183860 , bit it did not work...

What else has to be changed to make the ble_beacon example running on the BL654PA? 

Thanks in advance

Michael

[Vidar Berg]

Hi Michael,

The most common reason for code failing to run on custom boards is wrong clock settings so could you just double again check that you have the following clock settings in sdk_config.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

// <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

// </h> 

It would also be good if you can try to debug the code in Segger embedded studio or similliar and try to find out if the program gets stuck somewhere.

Thanks,

Vidar