12 Replies Latest reply on Dec 18, 2015 11:02 AM by jota_1939431

    SDK 2.2.2 and SDK 2.2.1 cause random disconnects/reconnects while SDK 2.2.0 does not ?

    ANa_2105331

      Unfortunately it looks like the SDK 2.2.2 hasn't solved the issue of random disconnect/reconnects that we were seeing with SDK 2.2.1 but not with SDK 2.2.0.

       

      As mentioned before, when we build our custom application using the SDK 2.2.0 we get a battery life with a CR2032 of 72+ hrs with no random disconnect/reconnects, while with the SDK 2.2.1 we get a battery life of 62+ hrs with anywhere from 50 to 100 random disconnect/reconnects. With everything else being the same the random disconnect/reconnects seen with SDK 2.2.1 is the culprit for the reduction in battery life. The SDK 2.2.2 was supposed to solve that.

       

      I used the (.7z) version to import the SDK 2.2.2 into the OSX Eclipse IDE. I built our custom application on our board and I am seeing the same behavior with the random disconnect/reconnects seen with SDK 2.2.1.  The iPhone running our app to acquire the data is sitting right next to the board. The same board when built with SDK 2.2.0 exhibits no random disconnects/reconnects throughout the 72hr period.  I also separately built the SDK 2.2.2 on a laptop running Windows 7 and built our custom application on a different board and immediately noticed the same behavior.

       

      This is rather unfortunate and disappointing since we have resolved almost all other issues and were hoping to freeze the firmware.  How do we resolve this ?

       

      p.s.1 -  The random disconnect/reconnects are not a reboot of the board, so the data index count is maintained

      p.s.2 - Our custom application is a modified heart_rate_monitor with a fine timer set at 200 ms.