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LCD420 Question

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physiks

Joined: 11 Mar 2006
Posts: 9

LCD420 Question
Posted: Tue Mar 21, 2006 8:27 pm

Does anyone know why LCD420.C works beautifully on PIC16F devices and not at all on PIC18F devices? _________________ Eric

PCM programmer

Joined: 06 Sep 2003
Posts: 21708

Posted: Tue Mar 21, 2006 9:25 pm

Reply with quote

Quote:

Does anyone know why LCD420.C works beautifully on PIC16F
devices and not at all on PIC18F devices?

Code:

#byte lcd = 6 // This puts the entire structure
// on to port B (at address 6)

The register addresses are different between the 16F and 18F devices.
Download the data sheet for your PIC. Look in the Table of Contents
on the left side in the Acrobat reader. Find the register map table.
Then look up the address for the Port B register, and substitute that
address for the value of 6, above. This assumes that you have wired
your LCD to Port B.

Code:

Data Memory Organization
--- SPECIAL FUNCTION REGISTERS
------ SPECIAL FUNCTION REGISTER MAP

physiks

Joined: 11 Mar 2006
Posts: 9

LCD420 Question
Posted: Wed Mar 22, 2006 6:29 am

That worked, Thanks. _________________ Eric

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