Jeff Nguyen / Mbed 2 deprecated Traffic_Light

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Dependencies:   mbed

main.cpp@0:41f066ce55cf, 2018-10-20 (annotated)

Committer:
JN482
Date:
Sat Oct 20 20:24:53 2018 +0000
Revision:
0:41f066ce55cf
Child:
1:992086cb4c27
Traffic light with safe and unsafe sequences. Pedestrian system also working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JN482 0:41f066ce55cf 1 /*
JN482 0:41f066ce55cf 2 This project includes both the safe, unsafe sequences, pedestrian crossing, and a buzzer.
JN482 0:41f066ce55cf 3 The Assignment task is to create both the safe and unsafe traffic light sequence.
JN482 0:41f066ce55cf 4 */
JN482 0:41f066ce55cf 5
JN482 0:41f066ce55cf 6 #include <mbed.h> // importing the mbed library to allow to use input and output fuctions
JN482 0:41f066ce55cf 7
JN482 0:41f066ce55cf 8 DigitalOut Onboard(LED1);//declaring the onboard led as Onboard
JN482 0:41f066ce55cf 9 DigitalOut RLED(D2);//RLED refers to the first traffic light Red
JN482 0:41f066ce55cf 10 DigitalOut ALED(D3);//ALED refers to the first traffic light Amber
JN482 0:41f066ce55cf 11 DigitalOut GLED(D4);//GLED refers to the first traffic light Green
JN482 0:41f066ce55cf 12 DigitalOut RRLED(D5);//RRLED refers to the second traffic light Red
JN482 0:41f066ce55cf 13 DigitalOut AALED(D6);//AALED refers to the second traffic light Amber
JN482 0:41f066ce55cf 14 DigitalOut GGLED(D7);//GGLED refers to the second traffic light Green
JN482 0:41f066ce55cf 15 InterruptIn button (USER_BUTTON); //I will be using the onboard button as a pedestrian button
JN482 0:41f066ce55cf 16 InterruptIn Switch(D15);//I will be using an external wire to act as a button.
JN482 0:41f066ce55cf 17 DigitalOut Buzzer(D10);//Buzzer/Beeper
JN482 0:41f066ce55cf 18
JN482 0:41f066ce55cf 19 bool pedest = false, unsafe = false;
JN482 0:41f066ce55cf 20 int counter = 0;
JN482 0:41f066ce55cf 21
JN482 0:41f066ce55cf 22 void pedestrians()
JN482 0:41f066ce55cf 23 //Declaring a procedure for changing a variable
JN482 0:41f066ce55cf 24 {
JN482 0:41f066ce55cf 25 pedest = true;
JN482 0:41f066ce55cf 26 Onboard = 1;
JN482 0:41f066ce55cf 27 }
JN482 0:41f066ce55cf 28 void reset()
JN482 0:41f066ce55cf 29 {//start reset procedure.
JN482 0:41f066ce55cf 30 //Declaring a procedure named reset, 0 arguments are passed.
JN482 0:41f066ce55cf 31 RLED = 0;
JN482 0:41f066ce55cf 32 ALED = 0;
JN482 0:41f066ce55cf 33 GLED = 0;
JN482 0:41f066ce55cf 34 RRLED = 0;
JN482 0:41f066ce55cf 35 AALED = 0;
JN482 0:41f066ce55cf 36 GGLED = 0;
JN482 0:41f066ce55cf 37 //All Lights are switched off. (Procedure Ends return to main)
JN482 0:41f066ce55cf 38 }//End reset procedure.
JN482 0:41f066ce55cf 39
JN482 0:41f066ce55cf 40
JN482 0:41f066ce55cf 41 void sequence(int unsafe)
JN482 0:41f066ce55cf 42 // Declaring a procedure for sequence. 2 Arguments are recieved - unsafe and pedestrians
JN482 0:41f066ce55cf 43 {//Start sequence procedure.
JN482 0:41f066ce55cf 44 if(unsafe == true)
JN482 0:41f066ce55cf 45 {
JN482 0:41f066ce55cf 46 // Sequence TRAFFIC 1, TRAFFIC 2
JN482 0:41f066ce55cf 47 RLED = 1; // RED ON RED OFF
JN482 0:41f066ce55cf 48 GGLED = 1; // AMBER OFF AMBER OFF
JN482 0:41f066ce55cf 49 wait(5); // GREEN OFF GREEN ON
JN482 0:41f066ce55cf 50 //----------------------------------------------
JN482 0:41f066ce55cf 51 GGLED = 0; // RED ON RED OFF
JN482 0:41f066ce55cf 52 ALED = 1; // AMBER OFF AMBER ON
JN482 0:41f066ce55cf 53 AALED = 1; // GREEN OFF GREEN OFF
JN482 0:41f066ce55cf 54 wait(2);
JN482 0:41f066ce55cf 55 //----------------------------------------------
JN482 0:41f066ce55cf 56 RLED = 0; // RED OFF RED OFF
JN482 0:41f066ce55cf 57 RRLED = 1; // AMBER OFF AMBER OFF
JN482 0:41f066ce55cf 58 ALED = 0; // GREEN ON GREEN OFF
JN482 0:41f066ce55cf 59 AALED = 0;
JN482 0:41f066ce55cf 60 GLED = 1;
JN482 0:41f066ce55cf 61 wait(5);
JN482 0:41f066ce55cf 62 //----------------------------------------------
JN482 0:41f066ce55cf 63 GLED = 0; // RED OFF RED OFF
JN482 0:41f066ce55cf 64 ALED = 1; // AMBER ON AMBER ON
JN482 0:41f066ce55cf 65 AALED = 1; // GREEN OFF GREEN OFF
JN482 0:41f066ce55cf 66 wait(2);
JN482 0:41f066ce55cf 67 //----------------------------------------------
JN482 0:41f066ce55cf 68 RRLED = 0; // RED OFF RED OFF
JN482 0:41f066ce55cf 69 ALED = 0; // AMBER OFF AMBER OFF
JN482 0:41f066ce55cf 70 AALED = 0; // GREEN OFF GREEN OFF ----------> The same as reset I may replace this with a call to reset
JN482 0:41f066ce55cf 71 }
JN482 0:41f066ce55cf 72 else if(unsafe == false)
JN482 0:41f066ce55cf 73 {
JN482 0:41f066ce55cf 74 // Sequence TRAFFIC 1, TRAFFIC 2
JN482 0:41f066ce55cf 75 RLED = 1; // RED ON RED OFF
JN482 0:41f066ce55cf 76 GGLED = 1; // AMBER OFF AMBER OFF
JN482 0:41f066ce55cf 77 wait(5); // GREEN OFF GREEN ON
JN482 0:41f066ce55cf 78 //----------------------------------------------
JN482 0:41f066ce55cf 79 GGLED = 0; // RED ON RED OFF
JN482 0:41f066ce55cf 80 // AMBER OFF AMBER ON
JN482 0:41f066ce55cf 81 AALED = 1; // GREEN OFF GREEN OFF
JN482 0:41f066ce55cf 82 wait(2);
JN482 0:41f066ce55cf 83 //----------------------------------------------
JN482 0:41f066ce55cf 84 RLED = 1; // RED ON RED ON
JN482 0:41f066ce55cf 85 RRLED = 1; // AMBER OFF AMBER OFF
JN482 0:41f066ce55cf 86 ALED = 0; // GREEN OFF GREEN OFF
JN482 0:41f066ce55cf 87 AALED = 0;
JN482 0:41f066ce55cf 88 wait(2);
JN482 0:41f066ce55cf 89 if (pedest == true)
JN482 0:41f066ce55cf 90 {
JN482 0:41f066ce55cf 91 do // A do while loop, do the following until the condition counter has been met
JN482 0:41f066ce55cf 92 {
JN482 0:41f066ce55cf 93 GGLED = 1;
JN482 0:41f066ce55cf 94 Buzzer = 1;
JN482 0:41f066ce55cf 95 GLED = 1;
JN482 0:41f066ce55cf 96 wait(0.2);
JN482 0:41f066ce55cf 97 GGLED = 0;
JN482 0:41f066ce55cf 98 GLED = 0;
JN482 0:41f066ce55cf 99 Buzzer = 0;
JN482 0:41f066ce55cf 100 wait(0.2);
JN482 0:41f066ce55cf 101 counter ++;
JN482 0:41f066ce55cf 102 pedest = false;
JN482 0:41f066ce55cf 103 Onboard = 0;
JN482 0:41f066ce55cf 104 }
JN482 0:41f066ce55cf 105 while(counter <= 20);// condition of counter is while the counter is less than or equal to 10
JN482 0:41f066ce55cf 106 }
JN482 0:41f066ce55cf 107 //----------------------------------------------
JN482 0:41f066ce55cf 108 GLED = 0; // RED OFF RED OFF
JN482 0:41f066ce55cf 109 // AMBER ON AMBER ON
JN482 0:41f066ce55cf 110 ALED = 1; // GREEN OFF GREEN OFF
JN482 0:41f066ce55cf 111 wait(2);
JN482 0:41f066ce55cf 112 //----------------------------------------------
JN482 0:41f066ce55cf 113 RRLED = 1; // RED OFF RED ON
JN482 0:41f066ce55cf 114 RLED = 0;
JN482 0:41f066ce55cf 115 ALED = 0; // AMBER OFF AMBER OFF
JN482 0:41f066ce55cf 116 GLED = 1; // GREEN ON GREEN OFF
JN482 0:41f066ce55cf 117 wait(5);
JN482 0:41f066ce55cf 118 //----------------------------------------------
JN482 0:41f066ce55cf 119 GLED = 0;
JN482 0:41f066ce55cf 120 ALED = 1;
JN482 0:41f066ce55cf 121 wait(2);
JN482 0:41f066ce55cf 122 ALED = 0;
JN482 0:41f066ce55cf 123 RLED = 1;
JN482 0:41f066ce55cf 124 wait(2);
JN482 0:41f066ce55cf 125 AALED = 1;
JN482 0:41f066ce55cf 126 wait(2);
JN482 0:41f066ce55cf 127 reset();
JN482 0:41f066ce55cf 128 }
JN482 0:41f066ce55cf 129 }//End sequence procedure.
JN482 0:41f066ce55cf 130
JN482 0:41f066ce55cf 131 int main()
JN482 0:41f066ce55cf 132 {//start main function.
JN482 0:41f066ce55cf 133 //Main procedure, I will create a loop and initalise my variables
JN482 0:41f066ce55cf 134 bool unsafe = false;
JN482 0:41f066ce55cf 135 /*To create my sequence Ivneed my lights to start on the same lights everytime.
JN482 0:41f066ce55cf 136 Therefore I will create a reset which will set all of the lights off.
JN482 0:41f066ce55cf 137 I will do this by creating a separate procedure for my main procedure to point to.*/
JN482 0:41f066ce55cf 138
JN482 0:41f066ce55cf 139 reset();//Main points to reset procedure
JN482 0:41f066ce55cf 140 button.fall(&pedestrians); // This fall procedure in is the button interrupt class
JN482 0:41f066ce55cf 141 while(1)
JN482 0:41f066ce55cf 142 {//Start of while
JN482 0:41f066ce55cf 143
JN482 0:41f066ce55cf 144 /*infinite loop, the program will never be able to exit this loop because the condition is always TRUE.
JN482 0:41f066ce55cf 145 Now that I have set up my infinite loop I can now start the sequence procedure.*/
JN482 0:41f066ce55cf 146 sequence(unsafe);// I am calling the sequence procedure with the arguments unsafe and pedestrians.
JN482 0:41f066ce55cf 147
JN482 0:41f066ce55cf 148 }//End of while
JN482 0:41f066ce55cf 149 return(0); // The complier warns me that this statement is unreachable, I know. Due the infinite loop above.
JN482 0:41f066ce55cf 150 }//End main function