Can nrf_bootloader_dfu_timers be used as GP LED timer during DFU?

[TomWS]

I'm working on a custom DFU bootloader using the Secure Bootloader example in the nRF5 15.2 SDK.  My board only has one LED and, during DFU, I'd like to using blinking duty cycle and frequency to indicate current DFU state.  In an app I'd use the app_timer driver, but, with the DFU, I don't think this is appropriate. 

Looking at the DFU bootloader code, it seems as if the nrf_bootloader_dfu_timers.c file has pretty much all that's needed for this IF I modify the code to add one more RTC channel (only two of the four channels appear to be used).  This would allow me to instantiate a third timer for LED flashing purposes.  Is this a reasonable approach or does anyone have an alternate suggestion?

Thanks in advance.

Processor: nRF52832

[Hung Bui]

Hi Thomas, 

I don't see any problem adding one more timer into the nrf_bootloader_dfu_timers.c . You may need to modify RTC_IRQHandler() to go through all the CC channel you use. 

[TomWS]

Hung Bui said:

You may need to modify RTC_IRQHandler() to go through all the CC channel you use. 

Yes, I did see that, but thanks for the head's up, the confirmation, and the fast response!