run ble peripheral code from nrf SDK 17.0.2 on NINA-B406 via Segger Embedded Studio V5.50d

[Pandurang Chauhan]

Hello All,

I am new to use Segger Embedded Studio and NINA-B406 module. I have installed Segger Embedded Studio V5.50d and EVK of NINA-B406 module having nrf52833 SoC.

I have successfully compiled and run the below code of blinky on my NINA-B406 EVK:

    nRF5_SDK_17.0.2_d674dde\examples\peripheral\blinky\pca10100e.

I have modified some configuration before compilation to run above code on NINA-B406.

Actually, my requirement is to use USB and BLE. So, I have taken below code

    nRF5_SDK_17.0.2_d674dde\examples\peripheral\usbd_ble_uart_freertos

I have modified configuration like memory, preprocessors, .svd file (Register Definition file) etc. to compile for nrf52833. I have custom_board.h file and used BOARD_CUSTOM preprocessor in project configuration.

After modifications, the project is compiled successfully. But when I flash and run the code, nothing happens. So, I checked in debug mode and observed that in assembly, after some instructions, it remains at one instruction and not coming out of it. It seems that still main is not started!

Below is the instruction copied from assembly where it stucks.

      9906 ldr r1, [sp, #24]

One BLE example code compiled and flashed from nrfConnect 3.7.0 is running fine.

Kindly help/guide me to debug and run the BLE + USB code in Segger Embedded Studio for NINA-B406 EVK.

Thanks.

[Simonr]

Hi

The examples we have in our SDK that use a SoftDevice are by default configured to use the external 32.768kHz LF clock, which most of the third party modules don't include. This would explain why you are able to use the basic blinky application, but not the USB + BLE application. Can you try change the following defines in your sdk_config.h file to these values.

// <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,

Simon