Hi
I am new at C programming. Can you please give me the
code for writing a program using a 4x3 keypad with a 74c922 encoder
chip in C? I know that when your DA pin is set high, it tells the
program that data is available, but how do you tell the code to go
fetch the data? When the DA pin goes high, it must trigger an external interrupt(INT0) and then it must detect whick key was pressed according the encoder chip.
Any help would be greatly appreciated!
Regards and Thanks
I am new at C programming. Can you please give me the
code for writing a program using a 4x3 keypad with a 74c922 encoder
chip in C? I know that when your DA pin is set high, it tells the
program that data is available, but how do you tell the code to go
fetch the data? When the DA pin goes high, it must trigger an external interrupt(INT0) and then it must detect whick key was pressed according the encoder chip.
Any help would be greatly appreciated!
Regards and Thanks