University of Plymouth - Stages 1, 2 and 3 / Mbed OS Task612-mbedos

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Fork of Task612-mbedos54 by Nicholas Outram

main.cpp@2:410eacc3006a, 2017-10-31 (annotated)

Committer:
noutram
Date:
Tue Oct 31 14:09:33 2017 +0000
Revision:
2:410eacc3006a
Parent:
1:fdf9ceb4a107
Child:
3:de36dab8492f
Updated for ELEC350

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 0:69af4e3595b6 1 #include "mbed.h"
noutram 0:69af4e3595b6 2
noutram 0:69af4e3595b6 3 #define RED_TOGGLE 1
noutram 0:69af4e3595b6 4 #define YELLOW_TOGGLE 2
noutram 0:69af4e3595b6 5 #define GREEN_TOGGLE 4
noutram 0:69af4e3595b6 6
noutram 0:69af4e3595b6 7 //Function declarations
noutram 1:fdf9ceb4a107 8 void FunctionRed();
noutram 1:fdf9ceb4a107 9 void FunctionYellow();
noutram 1:fdf9ceb4a107 10 void FunctionGreen();
noutram 0:69af4e3595b6 11
noutram 0:69af4e3595b6 12 //I/O
noutram 0:69af4e3595b6 13 DigitalOut onBoardLED(LED1);
noutram 2:410eacc3006a 14 DigitalOut redLED(PE_15);
noutram 2:410eacc3006a 15 DigitalOut yellowLED(PB_10);
noutram 2:410eacc3006a 16 DigitalOut greenLED(PB_11);
noutram 0:69af4e3595b6 17
noutram 0:69af4e3595b6 18 DigitalIn onBoardSwitch(USER_BUTTON);
noutram 2:410eacc3006a 19 DigitalIn SW1(PE_12);
noutram 2:410eacc3006a 20 DigitalIn SW2(PE_14);
noutram 0:69af4e3595b6 21
noutram 0:69af4e3595b6 22
noutram 0:69af4e3595b6 23 //Each of the following 3 functions is listening for a signal
noutram 1:fdf9ceb4a107 24 void FunctionRed()
noutram 0:69af4e3595b6 25 {
noutram 0:69af4e3595b6 26 while (true) {
noutram 0:69af4e3595b6 27 Thread::signal_wait(RED_TOGGLE);
noutram 0:69af4e3595b6 28 redLED = !redLED;
noutram 0:69af4e3595b6 29 }
noutram 0:69af4e3595b6 30 }
noutram 0:69af4e3595b6 31
noutram 1:fdf9ceb4a107 32 void FunctionYellow()
noutram 0:69af4e3595b6 33 {
noutram 0:69af4e3595b6 34 while (true) {
noutram 0:69af4e3595b6 35 Thread::signal_wait(YELLOW_TOGGLE);
noutram 0:69af4e3595b6 36 yellowLED = !yellowLED;
noutram 0:69af4e3595b6 37 }
noutram 0:69af4e3595b6 38 }
noutram 0:69af4e3595b6 39
noutram 1:fdf9ceb4a107 40 void FunctionGreen()
noutram 0:69af4e3595b6 41 {
noutram 0:69af4e3595b6 42 while (true) {
noutram 0:69af4e3595b6 43 Thread::signal_wait(GREEN_TOGGLE);
noutram 0:69af4e3595b6 44 greenLED = !greenLED;
noutram 0:69af4e3595b6 45 }
noutram 0:69af4e3595b6 46 }
noutram 0:69af4e3595b6 47
noutram 0:69af4e3595b6 48 //Main thread
noutram 0:69af4e3595b6 49 int main() {
noutram 0:69af4e3595b6 50 redLED = 0;
noutram 0:69af4e3595b6 51 yellowLED = 0;
noutram 0:69af4e3595b6 52 greenLED = 0;
noutram 0:69af4e3595b6 53
noutram 1:fdf9ceb4a107 54 //Create threads
noutram 1:fdf9ceb4a107 55 Thread t1;
noutram 1:fdf9ceb4a107 56 Thread t2;
noutram 1:fdf9ceb4a107 57 Thread t3;
noutram 1:fdf9ceb4a107 58
noutram 1:fdf9ceb4a107 59 //Start threads
noutram 1:fdf9ceb4a107 60 t1.start(FunctionRed);
noutram 1:fdf9ceb4a107 61 t2.start(FunctionYellow);
noutram 1:fdf9ceb4a107 62 t3.start(FunctionGreen);
noutram 0:69af4e3595b6 63
noutram 0:69af4e3595b6 64 //Main loop
noutram 0:69af4e3595b6 65 while(1) {
noutram 0:69af4e3595b6 66
noutram 0:69af4e3595b6 67 //Read stdin (serial port)
noutram 0:69af4e3595b6 68 int selection, hits;
noutram 0:69af4e3595b6 69 char strInput[64];
noutram 0:69af4e3595b6 70 do {
noutram 0:69af4e3595b6 71 puts("Please choose:");
noutram 0:69af4e3595b6 72 puts("1 - Red");
noutram 0:69af4e3595b6 73 puts("2 - Yellow");
noutram 0:69af4e3595b6 74 puts("3 - Green");
noutram 0:69af4e3595b6 75 scanf("%64s", strInput); //Read a string
noutram 0:69af4e3595b6 76 hits = sscanf(strInput, "%d", &selection); //Look for an integer
noutram 0:69af4e3595b6 77 } while (hits != 1); //Repeat if not found
noutram 0:69af4e3595b6 78
noutram 0:69af4e3595b6 79 //Signal the thread
noutram 0:69af4e3595b6 80 switch (selection) {
noutram 0:69af4e3595b6 81 case 1:
noutram 0:69af4e3595b6 82 //Signal thread 1
noutram 0:69af4e3595b6 83 t1.signal_set(RED_TOGGLE);
noutram 0:69af4e3595b6 84 break;
noutram 0:69af4e3595b6 85 case 2:
noutram 0:69af4e3595b6 86 //Signal thread 2
noutram 0:69af4e3595b6 87 t2.signal_set(YELLOW_TOGGLE);
noutram 0:69af4e3595b6 88 break;
noutram 0:69af4e3595b6 89 case 3:
noutram 0:69af4e3595b6 90 //Signal thread 3
noutram 0:69af4e3595b6 91 t3.signal_set(GREEN_TOGGLE);
noutram 0:69af4e3595b6 92 break;
noutram 0:69af4e3595b6 93 default:
noutram 0:69af4e3595b6 94 puts("Invalid option");
noutram 0:69af4e3595b6 95 break;
noutram 0:69af4e3595b6 96 } //end switch
noutram 0:69af4e3595b6 97
noutram 0:69af4e3595b6 98 } //end while
noutram 0:69af4e3595b6 99 } //end main