keypad interfacing to 8051

[suma_ranga]

i have some problem with interfacing 8051 to keypad, code in mazidi is nt working for me.. i dont know the reason. can anyone help

 

[sreepss]

Search the form before you post. You will found variety of threads for the same post..

 

[supermind2002]

Well mazidi code is not working then there can b a hardware level problem, you should also check your hardware,

 

[sreepss]

Please post your schematic here..

 

[romel_emperado]

Try this code.. I'm always using this code if I have a project
**broken link removed**

 

[thannara123]

tell you complaint ?
is it work in simulator ?
circuits ?
code ?

 

[mrarslanahmed]

did you grounded keypad and set the port.....

---------- Post added at 21:53 ---------- Previous post was at 20:37 ----------

#include <AT89X51.H> //Include file for 8051
#define keyport P2 //keypad connected to P2
#define col1 P2_0 //column 1
#define col2 P2_1 //column 2
#define col3 P2_2 //column 3
#define col4 P2_3 //column 4


there is some start lines of the program will it work on kiel....

because i dont know any thing about c based programing.