I have been experimenting on a small scale with the 18f series of pics for a while now. I understand how to do basic things, like adc, working with leds, but am now working on a much more advanced project. I, like several other members, am designing an instrument panel for my car. I have most of the details hammered out so far, the fuel and temperature sensors are just variable resistors, my speed sensor puts out 5 volt square wave signals, and my tachometer runs off of the ignition coil. For starters, I purchased a crystalfontz glcd, 128x64 which uses a toshiba t6963c controller. On this display, I plan on displaying three different parameters, all of which are simple a/d conversions, using an 18f4550 pic. For the graphics to be displayed, I drew a black and white bitmap 128x64 pixels wide in ms paint. I would like to display all of the data as bargraphs. Will I need to store a bitmap for each and every possible screen configuration, or is it possible to use a "background" image and animate only the bars? I have never used a glcd before (i have used basic character lcds though), and so I am unsure on how to perform simple animations on one. Could anyone point me in the right direction? I would prefer examples in c code (mikroc or c18 ppreffered)

 

I messed with a glcd - I remember it had a "draw rectangle" command, so this should be easy. Draw the background image, then use a series of "draw rectangle" commands for the bargraphs.