16F628 EEP Read/Write

dougy83 said:

If you're trying to write to the eeprom in both the main code and in the isr (assuming you're using it) you may have problems with the timing as well.

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tom3000 said:

no im not using int service routine at all if that's what you mean by isr

im using the simple

EEREAD
blah
blah
blah
retlw 0

EEWRITE
blah
blah
blah
retlw 0

both are CALLED from various other procs....AND IT DOESNT WORK RIGHT for READS either !!!!! (in the longer program of course)
in the short program it works perfectly fine, the short program is about 100 bytes long, no more

WTF ? ? ? ? ? ? ? ? ? ? ? ? ?

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tom3000 said:

having ruff time reading and writing to eeprom .....

for some strange reason it's intermittant....i have my read/write procedures in a short program....works perfectly fine......

i stick the exact same code into a larger program....it doesnt work right.....

anybody had something like that happen to them ??? what's the damn solution here

fact is the larger program is over 1k, has more 'CALLS', 'jmps' ...i also put short delay after every read/write cause it seemed to work better on my old 16f84's

? ? ?

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dougy83 said:

Post the code for your ee read and write routines. It's very odd that the reads don't work properly. Have you decoupled the power supply with a capacitor close to the pic?

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