How to simulate button press via SWD?

[ArtemS]

Hi.

I flash a board with NRF51822 via SWD pads, and that way the push button is inaccessible, and I need to press it to test various functions. Push button is on 28 bit and signal led is on 29.
I'm able to read from memory when button is released and when is pressed with OpenOCD (or Jlink if it would be better):

> nrf51.cpu mdw 0x50000510
0x50000510 10000000 ....

> nrf51.cpu mdw 0x50000510
0x50000510 00000000 ....

But, of course, writing to the register would not help:

nrf51.cpu mww 0x50000504 0x00000000

That way I'm only able to turn off\on led.

I need to figure out something software here, since there are 200 more of those board to flash and test...

[Marjeris Romero]

Hi,

I need to figure out something software here, since there are 200 more of those board to flash and test...

 Why aren't you using the nRF5 SDK? The latest nRF5 SDK with support for nRF51822 is nRF5 SDK v12.3.0, you can download it and the Softdevice (radio stack) from the nRF51822 product page on our website: https://www.nordicsemi.com/Products/nRF51822/Download#infotabs

Documentation for the SDK can be found on nordic's infocenter: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v12.3.0/index.html

And we have a Blinky example you can use which shows you how to configure GPIO pins as output using the BSP module: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v12.3.0/gpio_example.html

Best regards,

Marjeris

[ArtemS]

That all is slightly irrelevant to my question... Ofc I'm using SDK. Making button as output would not help here.

[Marjeris Romero]

I am sorry, it looked to me that you were trying to write to the registers directly to turn on/off the led. Can you please clarify what you need help with?