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forwardti
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| [help] "fprintf" can not display normally |
 Posted: Thu Oct 19, 2006 11:36 am |
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now I have a GPS receiver called GPS 35LVS and I want to use it on the platform of 16F877A. The compiling environment is CCS and ICD u40. Now I want to receive the data from the GPS and echo them to Debugger monitor via ICD U40, and there are some problem with the fprintf built-in function. Because I will use RS232 for GPS and RS232 for Debugger, I have to use fprintf fucntion to display the data on the monitor, however it can not display normally, just like something about Chinese characters. And, when I just use RS232 for debugger, the printf fucntion can perform normally. I do not know why.. A lot of thanks in advance for your kind ...
by the way, my notebook Operating System is Windows XP Chinese Edition
here is the code.
| Code: | #include<16f877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#device ICD=TRUE
#use delay(clock=8000000)
#use RS232(baud=4800, parity=N, 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;
DO
{
i = 0;
FOR (i = 0; i <= 70; i++)
{
c = fgetc(GPS);
GPS_packet[i] = c;
}
FOR (i = 17; i <= 40; i++)
{
fprintf(DEBUG,"%C",GPS_packet[i]);// here is where the problem exsit.
}
}WHILE(kbhit());
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Oct 19, 2006 12:58 pm |
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The CCS manual doesn't say the keyword is 'DEBUG'.
It says it is 'DEBUGGER'. |
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Guest
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| Posted: Thu Oct 19, 2006 4:02 pm |
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I find it in the CCS help document, in the Built-in Function->RS232 I/O->GETC, and there is an example on the bottom.
| Code: |
printf("Continue (Y,N)?");
do {
answer=getch();
}while(answer!='Y' && answer!='N');
#use rs232(baud=9600,xmit=pin_c6,
rcv=pin_c7,stream=HOSTPC)
#use rs232(baud=1200,xmit=pin_b1,
rcv=pin_b0,stream=GPS)
#use rs232(baud=9600,xmit=pin_b3,
stream=DEBUG)
...
while(TRUE) {
c=fgetc(GPS);
fputc(c,HOSTPC);
if(c==13)
fprintf(DEBUG,"Got a CR\r\n");
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Oct 19, 2006 4:27 pm |
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I don't have the CCS ICD-U40, so I can't test it for you.
All I can do is to read the manual. The last manual for vs. 3.249
of the compiler, says to do it this way:
| Quote: |
Debugger - Monitor
The monitor window shows data from the target and allows entry
of data to be sent to the target. This is done on the target like this:
#use RS232(DEBUGGER)
... printf(“Test to run? “);
test=getc();
For the PIC16 ICD the B3 pin is used on the target to implement this
capability. The normal ICD cable is already set up correctly for this.
|
The current manual for vs. 4.xxx also says to use the keyword DEBUGGER.
| Code: |
DEBUGGER Indicates this stream is used to send/receive data
though a CCS ICD unit. The default pin used in
B3, use XMIT= and RCV= to change the pin used.
Both should be the same pin.
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My suggestion is, if you are having problems, then follow the manual
exactly.
I can't help you any more on this topic. Someone else who has the
ICD-U40 will have to help. |
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forwardti
Guest
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| Posted: Fri Oct 20, 2006 1:57 am |
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okey! Thank you a lot.
I wil try that.
Actually, I thought only when I use "#use RS232(baud=9600, xmit=PIN_B3, rcv=PIN_B3, stream=DEBUG)", could I use the stream DEBUG for the monitor under the condition of two RS232.
so, I'll try that, Thank you! |
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