nrf52840 board returns error code 5

[hmihmi]

I made a custom board
And I am running the segger example ble_app_blinky_pca10056_s140
But
Even if I run log_init();, it returns error code 5
And even if I run timers_init();, it returns error code 5
If I comment out all the codes and only control the GPIO toggle, it works without any problem
I am using the sdk version nrf5_sdk_17.1.0, I am using nrf52840 revision 3
Can you tell me what is causing this problem?

Below is the circuit diagram

Thank you

[Einar Thorsrud]

Hi,

Error code 5 is NRF_ERROR_NOT_FOUND. Which function call returns it? Also, if you can elaborate a bit more on what you are doing and which changes you have done to the same (if any), that would be usefull.

PS: 10 pF load cap values seems a bi too low. Which HFXO crystal are you using?

[hmihmi]

Thanks for your reply
I commented all the code below in the ble_app_blinky_pca10056_s140 example main() and then uncommented only log_init();,timers_init(); and tested it, but it returns error 5 in all the statements
And the crystal is using the product in the link below
wmsc.lcsc.com/.../2304140030_JGHC-S3232000081040_C426985.pdf

And just in case, I removed the crystal from a working product, installed it, and tested it, but the result was the same.

log_init();
leds_init();
timers_init();
buttons_init();
power_management_init();
ble_stack_init();
gap_params_init();
gatt_init();
services_init();
advertising_init(); conn_params_init();

[Einar Thorsrud]

Hi,

Can you share the code with your modifications and explain in detail where it failed? The example should work out of the box.

I do not think it is related to what you are seeing, but the load capacitor for the HFXO is wrong, so I expect you will nto get radio working. As the datasheet of the crystal specified a load capacitance of 10 pF, you need higher capacitors around it (about 16 pF as explained under Load capacitors in General PCB design guidelines for nRF52 series).