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
Scrolling Text on LCD by PIC Microcontroller
Displaying text on LCD by interfaced with PIC16F877 microcontroller in 4 bit mode
Simple Project on LED blinking by PIC 16 Microcontroller
Step by step Project guide on PIC Microcontroller
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.
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