PIC16F877A E port Problem

[Bilal]

Hi I am using PIC16F877A and I am simply unable to use its Port E as I/O port.
And my aim is to use E0 and E1 as S/W I2C for DS1307.
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[Ttelmah]

First thing, how have you got the analog setup?.
Second, how is the PSP setup?.

These are the two things that can affect the operation of Port E.

SETUP_PSP(PSP_DISABLED);

and obviously, an an analog setup that doesn't include E0, E1 or E2 (look in the definition file, and avoid ones that have these pins mentioned).

If it still doesn't work, what compiler version?. No 'recent' problems I know of, with this chip/pins, but there might well be problems a long time ago.

Best Wishes

[barryg]

One more thing--the bit that enables the PSP is in the same TRIS E register as the customary TRIS bits. It's easy to change those extra bits when you think you're just setting the direction for E0/1/2. Some years ago even the CCS compiler made that mistake.