Summary of Keypad scanning and interfacing with PIC16f877 microcontroller
This article introduces a basic project on interfacing and scanning a 4x4 matrix keypad with the PIC16F877 microcontroller. It serves as a foundational step for larger projects, utilizing Proteus 7 Professional for simulation and MikroC Pro for programming. The guide highlights essential C commands like `Keypad_Init()` and `Keypad_Key_Click()` to handle input detection and port configuration via PORTC.
Parts used in the Keypad Scanning Project:
- PIC16f877 microcontroller
- 4*4 matrix keypad / keyboard
- Proteus 7 Professional software
- MikroC Pro for PIC software
- PORTC interface pins
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.
Now see the complete Embedded C Programing of our project Keypad scanning and interfacing with PIC16f877 microcontroller
For more detail: Keypad scanning and interfacing with PIC16f877 microcontroller
- What is the main purpose of this project?
To start big projects by learning small and necessary basics like keypad scanning. - Which software tools are used to make this project?
Proteus 7 Professional and MikroC Pro for pic are used. - How is the keypad port defined in the code?
The command char keypadPort at PORTC defines port C for the microcontroller. - What function initializes the keypad?
The function Keypad_Init is used for initializing. - How does the system wait for user input?
The function Keypad_Key_Click waits for a key to be pressed and released. - What type of keypad is interfaced in this project?
A 4*4 matrix keypad or keyboard is used. - Is this project considered advanced or basic?
It is described as a basic project to start with before bigger ones.
