16f876a : sw uart dosn't work after new code added

[alf-melmac]

Hello friends,

I'm using two sw uarts. the first works, the second too.

After placing some new code lines such these :

fprintf(AUX,"LED%d: GRÜN\n\rLED%d: GRÜN/GELB wechselnd\n\r",kanal*2+1,kanal*2+2);

into the source the received bytes from the second uart (func_modul) are corrupted. (Six byte has to come, only the first is ok.) If I remove the added lines, it work's again.

This are the first statements in the source:
#device *=16
#fuses noprotect,nodebug,nowrt,nocpd,nolvp,nobrownout,put,wdt,xt
#use delay(clock=4000000)
#use RS232 (BAUD = 1200,XMIT = PIN_C5,RCV = PIN_B1,PARITY = N,BITS = 8,BRGH1OK,stream = AUX)
#use RS232 (BAUD = 19200,XMIT = PIN_C7,RCV = PIN_C6,PARITY = N,BITS = 8,BRGH1OK,stream = FUNC_MODUL)


I really don't know whats wrong and I've already lost a lot of time.

May be somebody can help me.

Thanks.

[Ttelmah]

[alf-melmac]

I'm sorry, but may be I'didnt explain my problem correctly.
Ofcause I'm not sending and receiving at the same time !

This is the simplified program :

#use RS232 (BAUD = 1200,XMIT = PIN_C5,RCV = PIN_B1,PARITY = N,BITS = 8,stream = AUX)
#use RS232 (BAUD = 19200,XMIT = PIN_C7,RCV = PIN_C6,PARITY = N,BITS = 8,stream = FUNC_MODUL)

do {
stop_prog_and_wait_for_keystroke();
x=fgetc(FUNC_MODUL); // <- point of problem
if (x == wrong) show_error();

for (...) {
1) stop_prog_and_wait_for_keystroke();
do_something();
fprintf(AUX,......);

2) stop_prog_and_wait_for_keystroke();
do_something();
fprintf(AUX,......);

3) stop_prog_and_wait_for_keystroke();
do_something();
fprintf(AUX,......);
}
} while (1)


My probem :
If I add part 3) into the for-loop, the fgetc(FUNC_MODUL) d'snt work correcly anymore!

I think the increase of source lines changes the behavior of the generated code in "#uses rs232". (jump distance? bank switching ?)

Hope someone can help me.

[alf-melmac]

I've got it.

There is a problem with long strings in the compiler:

d'snt work:
fprintf(AUX,"Drehschalter %d rechts:LED%d: GRÜN/links: LED%d: GELB.\n\r\n\r",kanal+1,kanal*2+1,kanal*2+2);

work:
fprintf(AUX,"Drehschalter %d rechts:LED%d: GRÜN/",kanal+1,kanal*2+1);
fprintf(AUX,"links: LED%d: GELB.\n\r\n\r",kanal*2+2);

Ok, let's go on (to the next bug).