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forwardti
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| How can I display the GPS data on the Debugger monitor? |
 Posted: Mon Oct 23, 2006 7:00 am |
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Now I'm using the ccs & ICD u40 to do the coding. Here is a GPS receiver and I wanna to get the GPS receiver data and to display just on the debugger monitor, how can I manage this? Thank you.
the following is the code I wrote. Is there any problem? There is some rubbish characters on the monitor.
| Code: | #include<16f877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#device ICD=TRUE
#use delay(clock=8000000)
#use RS232(baud=4800, xmit=PIN_C6, rcv=PIN_C7, stream=GPS)
#use RS232(baud=9600, xmit=pin_B3, rcv=pin_B3, stream=DEBUG)
void main ()
{
int i;
char GPS_packet[70];
char c;
while (1)
{
i = 0;
for (i = 0; i < 70; i++)
{
if (kbhit(GPS))
{
c = fgetc (GPS);
GPS_packet[i] = c;
}
}
for (i = 14; i <= 40; i++)
{
fprintf (DEBUG, "%C", GPS_packet[i]);
}
}
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon Oct 23, 2006 11:43 am |
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| Quote: |
for (i = 0; i < 70; i++)
{
if (kbhit(GPS))
{
c = fgetc (GPS);
GPS_packet[i] = c;
}
}
|
Your code above doesn't wait for the characters to come in.
Most of the time, kbhit(GPS) will return 0 and the if() statement
code won't execute. But the for(;;) loop will continue to execute
and it will quickly go through 70 times, but without doing anything.
You will get one character if you're lucky. |
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