NRF51422 stuck in ble_app_template example

[ktbalazs]

Hi!

I am working on a project with NRF51422QFAB.

First I tried a simple program, which runs well.

After that I would like to try out my own board antenna with the ble_app_template example but unfortunately, the code stucks really early.

I use the NRF5 SDK 10.0 and Soft device S130.

I use the NRF5 SDK 11.0, but I get the same result.

I tired with NRF5 SDK 12.3.0, too, but I get the same result.

This is where the code stucks:

err_code = sd_softdevice_enable(p_clock_lf_cfg, softdevice_fault_handler);

This is the build config:

This is my shematic:

This is the antenna design:

Do you have any idea why is it not working? :/

Thank you!

Balazs

[Kenneth]

I suggest to check out: https://infocenter.nordicsemi.com/topic/ug_gsg_keil/UG/gsg/program.html

Your project settings with an softdevice looks wrong, it should be something like:

If you don't have an external 32kHz crystal you should likely change to:

#define NRF_CLOCK_LFCLKSRC      {.source        = NRF_CLOCK_LF_SRC_RC,            \
                                 .rc_ctiv       = 16,                                \
                                 .rc_temp_ctiv  = 2,                                \
                                 .xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM}

[ktbalazs]

Thank you for your fast reply.

Unfortunately, it did not fully help.

I tried to flash it with nrfgo studio.

I flash the S130 falsh device hex first, then the application almost with your settings (I set 1B000 to 1C000) but I get this error:

Why did I get this one?

[ktbalazs]

Could you check my error please?

[Kenneth]

I recommend to use the nrfjprog command line tool for programming:
https://www.nordicsemi.com/Products/Development-tools/nrf-command-line-tools/download 

E.g. type 'nrfjprog' in a command line for parameters.

That said, your screenshot says that you need to erase the chip before programming, have you tried that? E.g. type 'nrfjprog --eraseall'.

Kenneth

[ktbalazs]

I tried it in several ways, with the nrfjprog tool, too, but I have the same issue. The Softdevice can not initialize, and it stucks at the same point.