GM862-GPS RS232 Eval board connection problem

GPS/GNSS Development Boards
1

I am currently trying to interface the GM862-GPS RS232 eval board with the Atmel STK500 starter kit.

The module works fine when it is connected to the PC (using hyperterminal).

I wrote a code on the microntroller using the rprintf function from the avr library to dial a number but it does not work

I tested the code by connecting the microcontroller kit to another PC and it displays the correct command on hyperterminal.

Any help would be appreciated

2

Have you tried connecting the AVR to the PC via a level converter, to make sure that your serial routines are working properly?

Leon

3

I connected the AVR using the starter kit to the PC directly without a level converter and it worked fine

4

Thank you very much leon.

It actually did work after swapping the TxD and RxD

5

That caught me out once with a GE-863, I had to cut a couple of tracks on my PCB. :frowning:

Leon

6

…at least you didnt forget to read the little note about SIRF_BIN and the second serial port :wink: