nRF51822-QFAB-A0 not working with Gazelle

[Chris_Lawson]

We've been using nRF51822-QFAB-C0 for a few years without any problems.  It is being used for rf comms with Gazell (S110 8.0.0 and SDK10.0.0)

If the software is put in the QFAB-A0 it appears to run until a transmit occurs in Gazelle.  The timer interrupt is still running as I can toggle a gpio pin.

I've added a 12K pulldown to swdio/reset as required for this rev of IC.

Any ideas?

[ovrebekk]

Hi Chris

The A0 revision is a really old version of the part, and there are several radio erratas that are probably not handled by the Gazell library. 

Is there any reason why you still have such old parts in stock? 

Hopefully these are not parts that you ordered recently? 

Best regards
Torbjørn

[Chris_Lawson]

Hei Torbjørn,

I know they're old stock, I believe we've had them stocked for a number of years.

I don't know when Gazell was introduced but assume some of it worked for simple tasks.  We're only using it as a remote control.

Looking at https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf51.v1.0.0%2Fpdflinks%2Fnrf51_comp_matrix.html&cp=2_0  is it possible to get nRF51 SDK 4.4.2 and S110 5.2.1 ?

Cheers,

Chris

[ovrebekk]

Hi Chris

You can find older SDK versions here. 

I don't think the S110 v5.2.1 is shared anywhere, so I have attached it below:

3443.s110_nrf51822_5.2.1.zip

Best regards
Torbjørn