Reg: Same pin for Input and Output

[evaradharaj]

Hi,

I am using 16f877a for interfacing 4 wire resistive touch screen directly. I am following the instructions from this website:
http://www.pyroelectro.com/tutorials/touchscreen_interface_resistive/img/schematic.png

According to the diagram, I want to configure the port C pins for input as well as output in same program, but in different places (one by one).. Is it possible to do that?

Please suggest me. Thanks
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[Ttelmah]

Yes.

Output_drive sets the pin as an output.
Output_float sets it as an input.

If you are using standard_io, whenever you send data out of a pin, it is set as output, as soon as you read it, it switches to input.

However with the above two drive/float instructions, you can leave the output latch 'set', and disable the drive, as separate operations.

Best Wishes

[evaradharaj]

Thanks Ttelmah.
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