nRF51822 and S110 why does device wake from sleep and call main?

RE: nRF51822 and S110 why does device wake from sleep and call main?

Sam Lauffenburger — Tue, 05 Jan 2016 05:33:41 GMT

I discovered the issue. My device is asleep most of the time and wakes up for events. The adv timeout event was waking up the chip and we were restarting advertising manually in our application code. Thank you very much for your help and time - I apologize that it ended up being an oversight on my part.

RE: nRF51822 and S110 why does device wake from sleep and call main?

monpetit — Tue, 05 Jan 2016 04:12:10 GMT

That's strange, my example has stopped advertising.

RE: nRF51822 and S110 why does device wake from sleep and call main?

Sam Lauffenburger — Tue, 05 Jan 2016 03:07:10 GMT

No - advertising continues if I comment out that line in sleep_mode_enter()

RE: nRF51822 and S110 why does device wake from sleep and call main?

monpetit — Mon, 04 Jan 2016 07:49:52 GMT

I'm not aware of your purpose, but isn't it sufficient to comment out sd_power_system_off() in your code? Is the advertising still on going after timeout?

RE: nRF51822 and S110 why does device wake from sleep and call main?

Sam Lauffenburger — Mon, 04 Jan 2016 04:42:19 GMT

monpetit - yes! good catch. I inherited this code from another developer, so forgive my oversight.

I believe that the behavior I was seeing is because in ble_advertising.c, we were calling sd_power_system_off() when we set the BLE_ADV_EVT_IDLE advertising mode.

So this raises another question - what is the correct method of halting advertising without calling sd_power_system_off()? I have tried calling sd_ble_gap_adv_stop(), but it returns with an error code of 0x08.

RE: nRF51822 and S110 why does device wake from sleep and call main?

monpetit — Mon, 04 Jan 2016 04:33:40 GMT

Does your sleep module call function sd_power_system_off()?

RE: nRF51822 and S110 why does device wake from sleep and call main?

Sam Lauffenburger — Sun, 03 Jan 2016 20:32:07 GMT

Aryan - just letting you know that we figured out the issue. We had defined our own ble events, but also processed the same events in ble_advertising.c. An error occurred in the event processing in ble_advertising.c, but we did not define a ble error handler.

Thanks for your help.

RE: nRF51822 and S110 why does device wake from sleep and call main?

Sam Lauffenburger — Sun, 03 Jan 2016 19:15:49 GMT

Actually, Aryan, I don't think that is the issue. We have a custom application error handler that gets called in every other case. Our program never enters the handler in app_error.c.

RE: nRF51822 and S110 why does device wake from sleep and call main?

Sam Lauffenburger — Sun, 03 Jan 2016 17:10:36 GMT

Thanks - I'll check it out.

RE: nRF51822 and S110 why does device wake from sleep and call main?

Susheel Nuguru — Sun, 03 Jan 2016 17:06:24 GMT

You device seems to be restarting on some error. check this out.