Bluetooth failure for nrf51822

[Spok]

Hello,

I have been experimenting with a couple nrf51822 modules lately, and I am a at a point where one of the modules doesn't advertise in bluetooth anymore (it was working this very morning). I belive it is a hardware issue since if I flash the same code on another nrf51822, I can see it advertised (as a bluetooth keyboard).

Is there any troubleshooting steps I can do to confirm this ? I would like to know if it can be saved or if I have to swap it with another one.

Thanks

[Lutz95326]

Hi Spok,

i have the same problem. The same program, the same softdevices, one module works the other not...

This nRF51822-Modul (QFAAH0 1821YP) works perfectly with Bluetooth.

This nRF51822-Modul (QFAAH0 1524GG) works not with Bluetooth. Received Bytes from central (smartphone) do not come in my software, after a while the BLE-Module disconnect Bluetooth. Any other examples without Bluetooth (blinking LED ...) are working.

I suppose there is a problem in the chip.

How can i be shure to buy modules that works in future?

Best regards
Horst Härtel - Software Developer-

[Kenneth]

Hi,

There are no specific reasons why this should not work. You will have to try and fail a bit, for instance try to set breakpoints to look for asserts, floating pins (uarts), and if you have the correct low frequency clock option (internal or external 32kHz).

Kenneth

[Spok]

Thanks for your comments.

Couple more details: my code seems to run fine according to the debug data that I have. I am reading a UART pin and making a LED blink to get the data and I can see no particular error.

The board is a core nrf51822.

I will see if it could be an issue with the softdevice, but my loading script is supposed to reflash it every time, so it should be there.