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Serial Communication

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Situation is that I have a PIC16F877 with a MAX233 (actually a Sipex chip) for transferring information between the PIC and PC.


Normally it works quite well, but some times when I un-plug the serial cable without turning power off, PIC stops receiving data when I plug the cable back. What could cause this? Does anyone know?


EDIT: It was a software bug. Hardware receiver buffer overflowed and never got cleared. Software buffer was rather small too.

Edited by Stringer

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