Hi!
I've started using SDCC (ver 3.3.0) to program 12F675.
As the standard library doesn't provide delay functions I try to make my own
ones.
However its hard to guess variable names from the inline asm.
For instance:
static void _delay_ms(void) {
volatile unsigned char CounterA;
volatile unsigned char CounterB;
CounterA = 74;
CounterB = 2;
__asm
loop_again:
decfsz __delay_ms_CounterA_1_4,1
goto loop_again
decfsz __delay_ms_CounterB_1_4,1
goto loop_again
__endasm;
}
The variables CounterA and CounterB are prefixed with underscore and function
name: "__delay_ms_"
And suffixed with _1_4 and here's the problem. How can I guess these numbers?
In the above listing I compiled the code first with variables commented out and
looked up
their names in asm file. Then I corrected and uncommented relevant lines. This
solution is good
if you have just 2 lines, but...
Maybe already exists a solution and I'm just inventing something again?
The manual does't cover much about inline assembler in PIC14 section.
--
interia <[email protected]>
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