nRF51822 No Longer Advertising After Updating to SD 8.0

RE: nRF51822 No Longer Advertising After Updating to SD 8.0

Nicolas Tzovanis — Fri, 30 Oct 2015 19:54:25 GMT

I'm having a similar issue when upgrading from hardware rev2 to rev3, the device seems to be working (led blinking, button working) but I don't get any advertising packages. I'm using SDK 8.1.0 and S110 8.0. Did you solve the issue?

RE: nRF51822 No Longer Advertising After Updating to SD 8.0

Susheel Nuguru — Thu, 25 Jun 2015 11:03:31 GMT

The software on board in no way could create a permanent damage to the chip (unless you write to flash too many times and wear it out). I do not think that this behavior is caused by flashing SD8 and rolling back. Something else might have happened physically. "nrfjprog -e" or nrfGo eraseall should roll it back to factory reset firmware setting.

RE: nRF51822 No Longer Advertising After Updating to SD 8.0

Jeremy — Thu, 25 Jun 2015 10:45:51 GMT

I did attempt to enable BLE_COMMON_OPT_RADIO_CPU_MUTEX using sd_ble_opt_set() and that didn't seem to help while using 8.0. I'm happy moving back to SD 7.0, but is there something I might have permanently messed up on my rev 2 chip by flashing 8 on it that might be recoverable, or am I probably looking at a mechanical hardware failure that may have happened at some other step in the process and I'm looking in the wrong place? The chips seem to function completely normally (once rolling back to 7.0) whether stepping through with a debugger, or watching a status LED while free running; however, they aren't broadcasting the advertisement message like fresh chips do if configured with the same SD+program.

Thanks for the quick response, Jeremy

RE: nRF51822 No Longer Advertising After Updating to SD 8.0

Susheel Nuguru — Thu, 25 Jun 2015 10:20:29 GMT

Looking into the compatibility matrix, it does seem that Rev2 and SDK8.1 go together. Anyhow you can try this below, i am not sure if it will work but it is worth a try.

"A new option allows the application to enable radio and CPU mutual exclusion:

The new option allows applications to enable mutual exclusion between the radio and the CPU. BLE_COMMON_OPT_RADIO_CPU_MUTEX. This mutual exclusion is required to be enabled when running on nRF51 series IC revision 2 (devices affected by PAN #44 "CCM may exceed real time requirements" or PAN #45 "AAR may exceed real time requirements")."

These PAN's were fixed in rev 3 hardware and the SD8.0 assumes you are using rev 3.