[GPS_Standard] Simplified GPS Freq Std. Problems

[James Burney]

Hi Bertrand Zauhar,


I am having a few problems with implementing your design, and was hoping you
could answer a few questions.
First, this is been built on a breadboard, PIC was programed with a data i/o
unisite, lastest software was used.

My main problem is sending commands to the PIC, first there does not seem to be
any echo back of a command sent,
and the second, the PIC seems to be very unresponsive to a command sent to it.
If I send it the command ? 'enter' I may or may not get the command list, most
of the time, I don't get a response back.
Should note that I am using Putty on a windows PC and a FTDI232 chip to talk to
the PIC here, data send looks good.
4800 baud, 8,n,1.

When using the monitoring tool, I am also unable to set any of the parameters
with it as well.

Below is a sample output from the pic;

U|U|03FB0|.|.|236C|0001|FFFF|0001|00
U|U|03FB0|.|.|50C2|0002|FFFE|0002|00
U|U|03FB0|.|.|655D|0003|FFFD|0003|00
U|U|03FB0|.|.|66AC|0004|FFFC|0004|00
U|U|03FB0|.|.|687D|0005|FFFD|0005|00
U|U|03FB0|.|.|68B0|0006|FFFE|0006|00
U|U|03FB0|.|.|6B6A|0007|FFFF|0007|00
U|U|03FB0|.|.|6A4B|0008|0000|0008|00
U|U|03FB0|.|.|CDBB|0009|0001|0009|00
U|U|03FB0|.|.|FEE3|000A|0000|000A|00
U|U|03FB0|.|.|6624|000B|FFFF|000B|00

Any ideas from you as to what I maybe doing wrong here would be of great help.

Thank you so much for your time, Jim Burney