Hi George,
> now i am using sdcc for programming pic16f84a.i want to know from
> where i get the built in functions(functions for reading data from a
> port and writing to a port ,delay etc) in sdcc (means documentation
> of all the functions) and also some sample programs for pic16f84
The pic14 library is close to non-existent, there are nearly no built-in
functions available from the SDCC/pic14 distribution alone.
You may try to use library sources from the device/lib tree, but for
your needs, you will just have to write your own routines: output to a
port should be a mere
PORTA=0x42;
input similarly via
char c;
c = PORTA;
Delay routines will probably better be written in pure or inline
assembly similar to
#include <pic14regs.h>
#define NOP _asm nop _endasm
void delay_ms(unsigned ms) {
unsigned j; // unsigned char might suffice?
while (ms--) {
for (j=0x42; j; j--) { NOP: }
}
}
with 0x42 being replaced by a saner value, depending on the length of
the inner loop (number of instructions) and frequency of your device.
There might also be some code floating around on the web, but I have no
clue about that. Other may be able to help you out.
--
Regards,
Raphael Neider
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