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hi all
i am very much new to embedded systems ok so i really need help..i am using an keil board mcb 2140 with arm7 lpc2148. i am trying to interface a lcd and a keypad..i hav emade all the hardware connection required and in the display it shows the square matrix as well, now wen i send some data or any command to the lcd it has no effect..coud u please tel me wat would be the problem
i am not able to find the datasheet of the lcd i have its electroite 162 a.....do u hav eany idea abt it
When you can't find the datasheet of an LCD, the next step is to figure out the controller, and look for the datasheet for the controller - or possibly the datasheet for anyother LCD using the same controller.
The availability of a datasheet is one of the primary requirements when selecting what hardware to use.
In that case, don't waste your time on it!
As a beginner, you have plenty to learn without trying to second-guess or reverse-engineer unknown components!
Get one that comes with a full datasheet, study the datasheet, and write your code in accordance with the requirements stated in the datasheet.