EmbDev.net

Forum: µC & Digital Electronics Neo 5Q SPI bitstream problem


von Dave W. (Company: Personal) (davew)


Attached files:

Rate this post
useful
not useful
I'm working on a simple GPS implementation using a ublox neo 5q and a 
freescale mcf51jm128.  The issue I'm having is that I only receive 
intelligible NMEA data every now and again.  I have to reset the uC 
firmware a couple times before I get an NMEA bitstream.

This bitstream may be seen in the first file I have attached "NMEA 
Bitstream.jpg".

instead of this I get periodic unintelligible garbage which takes 3 
forms of which one is a combination of X's and H's and may be seen in 
the second file I have attached "garbage"

If anyone can offer me an explanation as to why this should be the case 
it would be greatly appreciated.

Thanks in Advance

Please log in before posting. Registration is free and takes only a minute.
Existing account
Do you have a Google/GoogleMail account? No registration required!
Log in with Google account
No account? Register here.