GPS Tracking System Project

This is CSE211 GPS tracking system project using Ti's Tiva TM4C board with ARM Cortex-M microcontroller.

Contributors

Program	Name	ID
CSE	Ali Mohsen Yehia Ateya	2000289
ECE	Amr Samir Fikry Ibrahim	2000987
ECE	Mohamed Magdy Mohamed Amin	2001986
ECE	Youssef Emad Eldin AbdelAzem	2001429
CSE	Adham Khaled Abdelmaqsoud Ali	2000066
ECE	George Nabil Henry	2000086
ECE	Omar Hesham Abdelhaseeb Mohamed	2001015

Video of The Project

Link

Desired behaviour

• The GPS system stores the coordinates of the start point.
• After reaching the destination point, the GPS system stores the coordinates of the end point and calculates the total distance that was taken by the user.
• The output will be translated as the following.
  1. The built-in LED will be turned on(green) when the target destination is reached.
  2. The built-in LED will be turned on(yellow) when the target destination is about to be reached < 5 meters.
  3. The built-in LED will be turned on(red) when the target destination is far away by distance > 5 meters.

Flow of Program

• We get the info about our position from the GPS satalites through an antenna.
• Then the GPS module takes this info and determines the position through some calculations.
• Then the GPS module sends this processed info about the position every one second in the form of NMEA sentences.
• The GPS module is connected to tm4c board through serial UART commuincation and inputs the NMEA sentences to the board.
• We recieve the NMEA sentences to the board and extract the coordinates info from it.
• Then we use the current coordinates to determine the distance to the destination and decide which led color to turn on.
• Also the program computes the total distance traveled by summing the distances between each two positions every second.
• Finally the program prints the total distace traveled on the serial monitor through UART0 on computer program (PuTTY).

Components used

• Tiva TM4c Board:
  
  

• NEO 6M GPS module:
  
  

• GPS Antenna:
  
  

Connections

• First we connect Vcc and gnd on GPS module and Tiva board together.
• Then we connect Rx of GPS module with Tx of Tiva board and vice versa.
• Since we will use UART1 for GPS we will connect Rx and Tx of GPS module with PB1 and PB0 respectively.
  
  

Functions used

In ports_initialization.c:

Three initialization functions of the ports A, B and F.

• initPortA
• initPortB
• initPortF

In uart0.c and uart1.c:

Two initialization functions of UART0 and UART1.

• initUART0
• initUART1

A function to write a single character on UART0.

• write_UART0

Three print functions on UART0 (serial monitor) that uses write_UART0.

• printString
• printStringln
• printDouble

A function to read a single character from UART1.

• read_UART1

A function that creates the string taken from UART1 (GPS) using read_UART1.

• makeInputString

In get_cooridnates.c:

A functions to extract the coordinates from the NMEA sentence.

• getCoordinates

A function to convert coordinates to degrees.

• fixCoordinate

In systick.c:

A function to initialize Systick.

• initSystick

Two functions to make delay in seconds and milli seconds.

• delayInSeconds
• delay

In main_functions.c:

Two Functions used in main to make it more readable.

• chooseLedColor
• calculateStepsTaken

A function to calculate distacne between two points.

• distance

Two functions to turn on/off the leds

• ledON
• ledOFF