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
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.