https://github.com/kareemmoneeam/ultrasonic-distance-measurement-system

This project implements a distance measurement system using an ultrasonic sensor HC-SR04 and an ATmega32 microcontroller. It is designed to measure the distance to an object and display the result on a 4x16 LCD. The system is based on a layered architecture model.
https://github.com/kareemmoneeam/ultrasonic-distance-measurement-system

Last synced: 3 days ago
JSON representation

This project implements a distance measurement system using an ultrasonic sensor HC-SR04 and an ATmega32 microcontroller. It is designed to measure the distance to an object and display the result on a 4x16 LCD. The system is based on a layered architecture model.

• Host: GitHub
• URL: https://github.com/kareemmoneeam/ultrasonic-distance-measurement-system
• Owner: KareemMoneeam
• Created: 2023-10-21T15:04:25.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-21T15:09:41.000Z (about 1 year ago)
• Last Synced: 2023-10-21T16:24:36.393Z (about 1 year ago)
• Language: C
• Size: 773 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Ultrasonic Distance Measurement System

## Overview

This project implements a distance measurement system using an ultrasonic sensor HC-SR04 and an ATmega32 microcontroller. It is designed to measure the distance to an object and display the result on a 4x16 LCD. The system is based on a layered architecture model, with separate HAL (Hardware Abstraction Layer), MCAL (Microcontroller Abstraction Layer), and Application layers.

## Hardware Requirements

- ATmega32 Microcontroller with a clock frequency of 8MHz.

- HC-SR04 Ultrasonic Sensor.

- 4x16 LCD with an 8-bit data interface.

- Components for connecting the ultrasonic sensor, LCD, and microcontroller (wires, resistors, etc.).

## System Architecture

The system follows a layered architecture model:

1. *HAL (Hardware Abstraction Layer):* Responsible for handling specific hardware components such as the LCD and Ultrasonic sensor. It includes the LCD and Ultrasonic drivers.

2. *MCAL (Microcontroller Abstraction Layer):* Provides drivers for the GPIO (General-Purpose Input/Output) and ICU (Input Capture Unit) of the ATmega32 microcontroller.

3. *Application Layer (Distance_Measurement.c):* The application layer where the main code resides. It manages the overall functionality of the system.

## GPIO Driver

The GPIO driver is used for general-purpose input/output operations. It remains the same as the one implemented in the course.

## ICU Driver

The ICU driver configures the Input Capture Unit of the ATmega32 to detect the rising edge as the first edge and is set to run at F_CPU/8. It includes the ICU_init and ICU_setCallBack functions.

## LCD Driver

The 4x16 LCD is connected to the ATmega32 using an 8-bit data interface. The control pins are connected as follows:

- RS → PB0

- RW → Ground

- E → PB1

- Data Bus → All PORTA pins.

## Ultrasonic Driver

The Ultrasonic driver is a full driver that utilizes the ATmega32 ICU driver. It provides the following functions:

- void Ultrasonic_init(void): Initializes the ICU driver for ultrasonic operation, sets up the ICU callback function, and configures the trigger pin as an output.

  

- void Ultrasonic_Trigger(void): Sends a trigger pulse to the ultrasonic sensor.

- uint16 Ultrasonic_readDistance(void): Initiates the distance measurement by triggering the sensor and returns the measured distance in centimeters.

- void Ultrasonic_edgeProcessing(void): The callback function called by the ICU driver, used to calculate the high time (pulse time) generated by the ultrasonic sensor.

## How to Use

1. Connect the ATmega32 microcontroller, HC-SR04 sensor, ICU Driver, and 4x16 LCD as described in the project documentation.

2. Compile the code using AVR-GCC.

3. Flash the firmware to the ATmega32.

4. Power up the system.

5. The distance to an object will be measured and displayed on the connected 4x16 LCD.