RE: Hardlock Issue (no GPIOTE)

Ole Morten — Mon, 17 Feb 2014 16:23:26 GMT

Which toolchain and IDE do you use? Can you please supply me the complete project you're working with? It sounds as if this case may be easier to handle as a regular support case, since it isn't as much a single question/answer, so I suggest that you create such case, uploading your complete project, so that I can test it here.

RE: Hardlock Issue (no GPIOTE)

Gerry Ortoli — Thu, 13 Feb 2014 18:25:44 GMT

Thank you for responding. Sorry if I wasn't clear in my original description but I've removed all of my IRQ changes & still have the problem. The code that's left does not (intentionally) do anything with GPIOTE. I had been thinking of ways to leverage PPI but fortunately have done nothing with it, ever.

I can breakpoint on the entry to app_error_handler(). The call stack indicates arrival from battery_level_update(). This portion of the code is unchanged from ble_app_hrs sample.

For lack of any better idea, I removed the application timer that periodically calls battery_level_update(). What I did was remove the definition of the associated app timer (from timers_init) as well as the timer start (from application_timers_start). I did a clean and rebuild all. Interestingly, the call stack continues to show the battery_level_update preceding the app_error_handler break. (huh?!)

I used the nRFgo Studio to erase the chip, then replaced the SD, finally replaced the application with a known-good binary from November. The device briefly shows up on BTLE, then hangs. Lastly, I made certain the SD image I'm using is identical to the original download (it is).

If I can trust the nRFgo Studio full chip erase, then at this point I must consider a hardware failure. Any ideas what could have happened to cause this situation? I only have 1 other prototype & am hesitant to risk it until I know more.

Thanks again in advance!

RE: Hardlock Issue (no GPIOTE)

Ole Morten — Thu, 13 Feb 2014 10:41:40 GMT

Could it be that the problem you're seeing is this?