Here I give you very important and simple project on Keypad / keyboard scanning and interfacing with PIC16f877microcontroller . To start big project you need to know small and necessary one first. So we start form basic . In my previous post I write on
So today I start with Keypad scanning and interfacing with PIC16f877 microcontroller. As like my other projects I used 1 ) Proteus 7 Professional and 2) Mikcro C Pro for pic to make my project.
In this project we will see some new command for interfacing 4*4 matrix keypad / keyboard.
char keypadPort at PORTC : is use for defining port of microcontroller with keypad. Here we defining port C for that.
Keypad_Init() : is use for initializing.
Keypad_Key_Click() : is use for wait for key to be pressed and released.