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Dominik
Joined: 04 Aug 2007
Posts: 18
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| Hexa command sending problem |
 Posted: Mon Oct 01, 2007 9:32 am |
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I'm using a PIC 16F877A and I try to send a command "0x0D" on the rs232 but it's not working.
My program is
| Code: |
#include <16F877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
void main() {
int x;
x=0x0D;
do {
printf("%x", x);
} while (TRUE);
}
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I tried also "%2x" or "%c" and putc(0x0D) but it's not working too.
Any help will be very welcome.
Dominik |
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kevcon
Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA
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| Posted: Mon Oct 01, 2007 9:43 am |
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try
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Dominik
Joined: 04 Aug 2007
Posts: 18
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| Posted: Mon Oct 01, 2007 11:06 am |
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This is not working too ...
But there's something strange because the program seems to work with the CCS PCM C Compiler, Version 4.013 and doesn't working with mine's CCS PCM C Compiler, Version 4.038. |
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kevcon
Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA
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| Posted: Mon Oct 01, 2007 11:14 am |
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How is it not working exactly?
Are you getting an error message when you compile?
I'm using 4.038 and have no problems. |
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Dominik
Joined: 04 Aug 2007
Posts: 18
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| Posted: Mon Oct 01, 2007 11:23 am |
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The program is compiled good but the datas sent are strange characters and the ones in the program.
Might come from this part ?
| Code: | #include <16F877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
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kevcon
Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA
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| Posted: Mon Oct 01, 2007 12:32 pm |
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I doubt it is a problem with the part, it's more likely that your PC's baudrate is slightly off, or your crystal is not exactly 4Mhz
Try a slower baudrate like 1200
Give this a try too.
| Code: |
#pragma use rs232( stream = UART_1 , baud = 1,200, UART1, parity = N, BITS = 8 )
fprintf( UART_1, "\r" );
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