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Guest
Guest
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| Printing Binary Representation..... |
 Posted: Sun Jan 29, 2006 9:00 pm |
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Hi,
I have a status byte that is read from an external piece of hardware and I'd like to print out the binary representation of the byte for clarity during troubleshooting. Can this be done directly, or will I have to test each bit individually and then display them?
Ian |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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treitmey
Joined: 23 Jan 2004
Posts: 1094
Location: Appleton,WI USA
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| Binary print |
| Posted: Mon Jan 30, 2006 10:53 am |
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This is how I print binary. This could be shortened/cleaned up.
| Code: | #include <16F877a.h>
#device *=16
#use delay(clock=20000000)
#fuses hs,nowdt,nolvp,protect,put,brownout
#use rs232(baud=19200,xmit=PIN_B4,INVERT,stream=DEBUG)
#case
#zero_ram
void bin_putc( char c);
//======================= Main ==============================
void main(void)
{
int8 data=180;//180=0xB4=1011 0100
printf(bin_putc,"This is a test %lX\n\r",data);
while(1)
{
}
}
//======================= print binary nibbles from hex ============================//
void bin_putc( char c) {
//converts hex to bin
//printf(bin_putc,"%lX\n\r",data);
switch (c) {
case '0' :
fprintf(DEBUG,"0000 ");
break;
case '1' :
fprintf(DEBUG,"0001 ");
break;
case '2' :
fprintf(DEBUG,"0010 ");
break;
case '3' :
fprintf(DEBUG,"0011 ");
break;
case '4' :
fprintf(DEBUG,"0100 ");
break;
case '5' :
fprintf(DEBUG,"0101 ");
break;
case '6' :
fprintf(DEBUG,"0110 ");
break;
case '7' :
fprintf(DEBUG,"0111 ");
break;
case '8' :
fprintf(DEBUG,"1000 ");
break;
case '9' :
fprintf(DEBUG,"1001 ");
break;
case 'A' || 'a' :
fprintf(DEBUG,"1010 ");
break;
case 'B' || 'b' :
fprintf(DEBUG,"1011 ");
break;
case 'C' || 'c' :
fprintf(DEBUG,"1100 ");
break;
case 'D' || 'd' :
fprintf(DEBUG,"1101 ");
break;
case 'E' || 'e' :
fprintf(DEBUG,"1110 ");
break;
case 'F' || 'f' :
fprintf(DEBUG,"1111 ");
break;
default :
fprintf(DEBUG,"%C",c);
break;
}
}
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Humberto
Joined: 08 Sep 2003
Posts: 1215
Location: Buenos Aires, La Reina del Plata
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| Posted: Mon Jan 30, 2006 2:29 pm |
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Following is PCM Programmer code slightly optimized.
| Code: |
void display_binary(char c)
{
char i;
i = 8;
putc('0');
putc('b');
do
{
if( c & 0x80 )
{ putc('1'); }
else
{ putc('0'); }
c <<= 1; i--;
} while(i);
}
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Short, fast and elegant.
Humberto |
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