Robert Watzlavick <[email protected]> writes:

> I was attempting to upgrade a TeleDongle 3.0 from 1.9 to 1.9.2 and I 
> managed to get it in a bad state.  When I tried to flash the image under 
> Linux, I got an error (can't remember the message) and it then it 
> wouldn't show up as a USB device.  Every time I try to flash the 
> TeleMetrum firmware, I get the same error message the first time, then 
> it usually works the next time I try it.
>
> On the TeleDongle, I bridged pin 32 to ground and got the flash loader 
> to be recognized but I can't get it to flash an image.  In Linux, it 
> just says "Opening Device" and in Windows, it does nothing after I 
> select the .ihx file - the dialog closes and goes back to the main UI.  
> I tried 1.9.1 and 1.9.4 on Windows and on Linux, 1.9.2 and 1.9.3.
>
> Any ideas?

Maybe try my test version of something after 1.9.4 but not quite 1.9.5
yet?

        https://keithp.com/~keithp/altos-1.9.5/

I found several flashing issues when upgrading firmware versions which
have different code.

On Linux, if you run altosui from a terminal window and enable 'Serial
Debug' in the 'Configure AltosUI' dialog, you will see a bunch of
messages that describe the process of reflashing; capture a broken
session of that and send it along.

> The reason I was trying to upgrade the TeleDongle firmware is that I've 
> had issues with losing the telemetry link after a while.  The symptom is 
> that after a while, 5-30 min maybe, the TeleDongle will appear to stop 
> receiving data and the Age indicator will start counting up.  The only 
> way to restore operation is to power cycle the TeleMetrum.  Is this  
> known issue?  I've had two TeleMetrum units and the same problem 
> occurred on both. Both devices are in the same room with plenty of 
> signal strength.

I would suspect some kind of serial communication problem with the USB
dongle; I've never heard of anyone having anything like this.
> http://lists.gag.com/mailman/listinfo/altusmetrum

-- 
-keith

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