Embedded-System_1st_Assignment

This application is designed for an embedded system, utilizing PIC24 microcontroller, to manage UART communication, SPI interface, and timer-based interrupt handling.

Overview

The code consists of functionalities for handling interrupts, managing circular buffers for UART communication, and controlling SPI-based LCD display. It's organized into sections for initialization, interrupt handlers, timer configurations, communication functions, and the main loop.

Features

• Interrupt Handling:
  • Utilizes Timer1 and Timer2 interrupts to manage specific functionalities like LED control and button debouncing.
  • UART RX interrupt is used to handle received data.
• Communication Interfaces:
  • SPI1 is configured for communication with an LCD display.
  • UART2 is set up for serial communication.
• Buffer Management:
  • Circular buffer structure is implemented for UART data reception.

Usage

Setup

1. Configure the PIC24 microcontroller with the provided configuration settings.
2. Initialize SPI and UART interfaces using initSPI() and initUART() functions.
3. Set up circular buffer for UART communication via initCircularBuffer().

Main Functionality

• The main() function orchestrates the entire application, implementing an algorithm, managing UART buffer, and handling interrupts.
• The program displays characters received through UART on an SPI-driven LCD screen.
• It reacts to button presses (S5 and S6), triggering specific actions like LED control, data transmission, and LCD display manipulation.

Important Functions

• addToBuffer(char data): Adds received UART characters to a circular buffer for processing.
• sendSPI(char data): Sends data through SPI to control the LCD display.
• sendUARTBuffer(char buffer[]): Transmits data via UART.
• Interrupt handlers (_T1Interrupt(), _T2Interrupt(), _U2RXInterrupt()) manage specific interrupt-driven tasks.

Notes

• Adjust timer settings (tmr_setup_period(), tmr_wait_ms()) based on required time intervals.
• Ensure proper handling of UART buffer overflows (addToBuffer() function).

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• Karim Triki S5528602
• Roumaissa Benkredda S5434673