esb_low_power_ptx_pca10040 button events

[xwinderx]

Hello,

I am trying to figure out how the button presses in the module esb_low_power_ptx_pca10040 are creating events?

I have done some research and do not see this module using app_button or bsp_button.

There is the event handler nrf_esb_event_handler but I can not figure out how the buttons are causing this handler to be called.

I am using a nrf52 demo board and SDK 12.2.0

Thanks,

Tim

[Martin Lesund]

Hi xwinderx,

You are correct in your investigation that this example application is not using the "app_button" or "bsp_button" modules.

In fact it only checks the GPIOs directly if they are "high/low" in the main file, using nrf_gpio_pin_read() from the GPIO driver.  (see the "nrf_gpio.h")

 

The nrf_esb_event_handler gets called from ESB events and not from any button/gpio events. (so the buttons are not causing the handler to be called)

See the ESB_EVT_IRQHandler in the nrf_esb.c to see the ESB event being set.

 

This is also described in the ESB user guide.

[cwmoreiras]

broken links

[Martin Lesund]

updated the links.
If you have questions related to this case, please make a new Devzone ticket.