18F252 Serial Interrupt Assembly Listing

[ljbeng]

Here is the listing for a program that works for the serial interrupt:


.................... #int_RDA
.................... void RDA_isr(){
....................
*
0098: NOP(FFFF)
.................... status = getc();
009A: BTFSS F9E.5
009C: GOTO 009A
00A0: MOVF FAE,W
00A2: MOVWF 17
....................
.................... }
....................
....................
00A4: BCF F9E.5
00A6: GOTO 0056
.................... void main() { etc.....


Here is a listing from my program that does not work:

.................... #int_RDA
.................... RDA_isr(){
....................
*
022C: NOP(FFFF)
.................... status = getc();
022E: GOTO 020A
0232: MOVFF 01,34
....................
.................... }
....................
....................
0236: BCF F9E.5
0238: GOTO 0056


Notice status=getc() is compiled into a goto 020A and is missing the BTFSS F9E.5 line. 020A is another routine that checks the DS1302 clock. What is happening here?[/code]

[PCM programmer]

What versions of PCH did you use to make these two routines ?

[ljbeng]

PCH 3.185

[ljbeng]

I just updated to 3.188 and it still does it.

[Ttelmah]

[ljbeng]

Well, I made the problem go away by starting a new project and slowly adding my subroutines and main routine. I compiled each time I added something and I never saw the odd listing again. This was one way to fix the problem....

[Neutone]

So the only difference is this line?

void RDA_isr(){