Re: [Gpsbabel-code] Skytraq Venus 5 baud rate problem

[Markus H. <mi...@gm...>]

Mathias Adam wrote:
> Yes, the examples you provided look like a baud rate mismatch :-(
>
> Unfortunately, I don't know of a way to set the baud rate of a remote
> bluetooth serial port. Whenever I tried to change the baud rate of the
> port from the host PC, the remote port seems to ignore it completely
> (despite the PC does show the new baud rate).
>
> I may be wrong though -- however I assume that, unlike USB serial ports,
> the baud rate can only be set by the locally connected controller (i.e.
> the GPS receiver) or even is hardwired by some coding lines on the PCB.
>
>    
It is a no-name device. I don't even know the brand. Meanwhile I also 
contacted Skytraq. According to them, there's no way to repair the 
device using software.

>> Does anyone here on the list has any idea how to save the device or have I
>> successfully bricked it? Any help is appreciated.
>>      
> I'd first look for documentation of the bluetooth chip used by the GPS
> device and see if there's some way to change the baud rate remotely.
>
> If not I'd open the device and try to connect the GPS receiver directly to
> the PC using some serial adapter (not directly to the serial port since
> its 12V signals are likely to screw the internal serial port of the GPS
> device)...
>
> What make/model is your GPS device?
>
>    
Yes, connecting to the internal serial port (with level-changer) is 
probably the only way. In the datasheet of the Venus521 chipset they 
also mention a pin that can be used to make the chipset boot from ROM 
instead from flash, which might help also.

However, since I don't have a wiring plan of the PCB I won't go for 
either option.

But thanks for your help, anyway!

Btw, all that happened without gpsbabel, so nothing wrong with your 
software.

Mike