Change of pin function if ICD disabled

[John_Rio]

Hi.

I have a strange little problem.

I have the folloving code in my timer interrupt routine.
IF(milsec++ == 100){decisec++; milsec=0;output_toggle(PIN_B5);}
This works fine when the statement

#device ICD=TRUE
Is used.
I want to remove the ICD=TRUE statement to make the chip read protected, but then the LED stops flashing.

Anybody knows why ?
Device = 18F252

[PCM programmer]

Pin B5 is the PGM pin on the 18F252. I suspect that you forgot to
put NOLVP at the end of your #fuses statement. Without that setting,
the PIC will be left in Low Voltage Programming mode, and will then
lock up if pin B5 goes high.

[John_Rio]

That did it.

I was not aware of that.
Once again thanks.

[PCM programmer]

This one problem with LVP vs. NOLVP has probably cost the entire
PIC engineering/student community 100,000 hours. (Let's say every
student or engineer spends 1 hour puzzling over this problem once
in their career.) So for probably one customer who insisted on this
feature, Microchip has cost the entire community tons of time.