Running simple project with Softdevice and SDK 17.1.0

[Syntima_Chris]

Hello,

I am developing a new application using nRF52832 and writing and debugging code on Segger embedded studio (Release 5.68) with SDK v17.1.0. 

I try to run simple application like the one below:

-------------------------

int main(void)

{

SEGGER_RTT_printf(0, "firmware started\n");

while(1)

{

 SEGGER_RTT_printf(0, "test\n");

nrf_delay_ms(1000);

}

}

--------------------

The application has been tested on both development kit board and my own board with same result. When I display RTT terminal, I get straigth away 7 messages "test" and then no more messages like if microcontroller when to sleep. 

I have two questions:

1) nrf_delay_ms doesn't operate correctly. I ahev already read some thread about this issue but none of what I read helped me. Any suggestions?

2) Is there any necessary code to keep awake micro in the main loop like idle_state_handle() function etc...

Thank you for your help

[Syntima_Chris]

Hi, I have moved a step forward. First of all, I got a nrf52832 dev kit and run simple blinky example using sdk 17.1.0 without any problems. I am now moving to my own custom board. 

I have 1 LED (IO_13) and 3 test_pins (IO_29 to 31) I can easily use to start running simple project. Unfortunately, I have not been able to see any gpio toggling right now. 

I have created my custom board, and modify simply blinky example to match with my board. I can run program step by step and can through assembly code, but none of the GPIOs toggle. 

If you have any suggestions for my next steps, it would be helpful :-)

[Edvin]

Hello,

Are you sure you have mapped the GPIOs correctly? That your IO_13 is connected to P0.13 on the nRF? And if you run the same application on the DK, does the corresponding GPIOs toggle? On your custom board, do you have an LFXTAL? If not, have you told your application that it doesn't have it?

If you flash the softdevice and a BLE sample, do you see any advertisements?

Best regards,

Edvin

[Syntima_Chris]

Hello,

I am able to run example with advertising. I have tried couple of things like using internal oscillator instead of external crystal (no success toggling GPIO). I have few years of experience running project on nRF52832 (until 2022). I am back to this micro for a new project but hard to make simple things working. Maybe, my custom board have an issue but I have to figure where issue is.

[Syntima_Chris]

I have a ublox dev kit on hand. I have ran simple blinky app on the kit and have same issue than with my custom board. I guess there is something simple to fix in configuration of the project. Looking deeper in project configuration ...

[Syntima_Chris]

I think I found the issue. I use a ublox chip on my custom board and realized that ublox remapped gpios to different pin numbers. I am now able to toggle LEDs on the ublox dev kit. :-)

[Edvin]

I am glad you found the cause of the issue! Best of luck with the rest of the development

Best regards,

Edvin

[Syntima_Chris]

Quick question for my understanding: why sdk_config.h file is different between examples. When we are building project with BLE, UART, SPI and so on, how can we trust any examples !!!! and documentation !!!!