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horde_fuego
Joined: 31 Mar 2009
Posts: 11
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| btfsc instruction converted in CCS C |
 Posted: Sun Jul 12, 2009 9:32 pm |
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good morning everyone!!
how do i write a code in CCS which performs the same routine that the btfsc (assembly language instruction in MICROCHIP) does?
thanks!!  |
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bungee-
Joined: 27 Jun 2007
Posts: 206
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| Re: btfsc instruction converted in CCS C |
| Posted: Sun Jul 12, 2009 11:19 pm |
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| horde_fuego wrote: | good morning everyone!!
how do i write a code in CCS which performs the same routine that the btfsc (assembly language instruction in MICROCHIP) does?
thanks!! |
| Code: |
#asm
btfsc ....
#endasm
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Sun Jul 12, 2009 11:43 pm |
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You can generate that ASM instruction by calling the bit_test() function,
as shown below. Look at the .LST file.
| Code: |
#include <16F877.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock=4000000)
//======================================
void main()
{
int8 value;
int8 result;
value = 0x55;
if(bit_test(value, 7) == 0)
result = 0;
else
result = 1;
while(1);
} |
There is probably a CCS function for most things that you want to do.
Look at the list of Bit Manipulation functions on this page:
http://www.ccsinfo.com/content.php?page=compspecific#bit
Then look in the CCS manual or the Help File for more information.
http://www.ccsinfo.com/downloads/ccs_c_manual.pdf |
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horde_fuego
Joined: 31 Mar 2009
Posts: 11
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| Posted: Mon Jul 13, 2009 2:14 am |
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To bungee and PCM programmer,
Thank you very much for the replies. This will surely help me in my program. Thanks a lot!!
-horde |
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RLScott
Joined: 10 Jul 2007
Posts: 465
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| Re: btfsc instruction converted in CCS C |
| Posted: Mon Jul 13, 2009 6:25 am |
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| horde_fuego wrote: | | ...how do i write a code in CCS which performs the same routine that the btfsc ... |
Often the "if(bit_test(x,y))" will compile to a single btfsc or btfss instruction.
_________________
Robert Scott
Real-Time Specialties
Embedded Systems Consulting |
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