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Thanks Tahmid,
I really appreciate your efforts. Thanks for the advice it worked with that way.
Now i have tried to display the pressed number on LCD. Facing a new problem before even i press any button a string of random number is getting printed on that constantly...
Hi friends...I am just trying to connect key pad. There are two keypads connected to controller one is on PORTD which is 4x4 and other on PORTC 3x3, in following code just trying to get key number and display using LED's on PORTA. FCPU is 12MHz and Controller is ATmega128.
i am using Code-vision...
Re: 4x4 matrix keypad ,LCD & Atmega128 interfacing probl
Hi friends, thanks for your cop ration, I manage to get rid of this problem...Just making keyport high before making rows low.
unsigned char get_key(){
unsigned char i,key=1;
for(i=0;i<4;i++){ //Loop for 4...
Hi friends,
I am trying to interface a keyboard and LCD with ATmega128. I have manage to get lcd going but keyboard seems to be creating some problem…..it is not printing 1,5,9,13 which are on first row and first column.
Please try to find this strange behavior code and ckt is attached with...
Thanks for replying Dora. I am using simple keypad with Up-Down, and left-right button (Matrix) ......thanks for your help..........looking forward for update with some pictures....that would be great help!
Thanks a lot!
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