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@3:de36dab8492f, 2019-11-08 (annotated)

Committer:
noutram
Date:
Fri Nov 08 10:10:14 2019 +0000
Revision:
3:de36dab8492f
Parent:
2:410eacc3006a 
2019 - new API

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 3:de36dab8492f 27 // Thread::signal_wait(RED_TOGGLE); //Now using new API
noutram 3:de36dab8492f 28 ThisThread::flags_wait_any(RED_TOGGLE);
noutram 0:69af4e3595b6 29 redLED = !redLED;
noutram 0:69af4e3595b6 30 }
noutram 0:69af4e3595b6 31 }
noutram 0:69af4e3595b6 32
noutram 1:fdf9ceb4a107 33 void FunctionYellow()
noutram 0:69af4e3595b6 34 {
noutram 0:69af4e3595b6 35 while (true) {
noutram 3:de36dab8492f 36 // Thread::signal_wait(YELLOW_TOGGLE);
noutram 3:de36dab8492f 37 ThisThread::flags_wait_any(YELLOW_TOGGLE);
noutram 0:69af4e3595b6 38 yellowLED = !yellowLED;
noutram 0:69af4e3595b6 39 }
noutram 0:69af4e3595b6 40 }
noutram 0:69af4e3595b6 41
noutram 1:fdf9ceb4a107 42 void FunctionGreen()
noutram 0:69af4e3595b6 43 {
noutram 0:69af4e3595b6 44 while (true) {
noutram 3:de36dab8492f 45 ThisThread::flags_wait_any(GREEN_TOGGLE);
noutram 0:69af4e3595b6 46 greenLED = !greenLED;
noutram 0:69af4e3595b6 47 }
noutram 0:69af4e3595b6 48 }
noutram 0:69af4e3595b6 49
noutram 0:69af4e3595b6 50 //Main thread
noutram 0:69af4e3595b6 51 int main() {
noutram 0:69af4e3595b6 52 redLED = 0;
noutram 0:69af4e3595b6 53 yellowLED = 0;
noutram 0:69af4e3595b6 54 greenLED = 0;
noutram 0:69af4e3595b6 55
noutram 1:fdf9ceb4a107 56 //Create threads
noutram 1:fdf9ceb4a107 57 Thread t1;
noutram 1:fdf9ceb4a107 58 Thread t2;
noutram 1:fdf9ceb4a107 59 Thread t3;
noutram 1:fdf9ceb4a107 60
noutram 1:fdf9ceb4a107 61 //Start threads
noutram 1:fdf9ceb4a107 62 t1.start(FunctionRed);
noutram 1:fdf9ceb4a107 63 t2.start(FunctionYellow);
noutram 1:fdf9ceb4a107 64 t3.start(FunctionGreen);
noutram 0:69af4e3595b6 65
noutram 0:69af4e3595b6 66 //Main loop
noutram 0:69af4e3595b6 67 while(1) {
noutram 0:69af4e3595b6 68
noutram 0:69af4e3595b6 69 //Read stdin (serial port)
noutram 0:69af4e3595b6 70 int selection, hits;
noutram 0:69af4e3595b6 71 char strInput[64];
noutram 0:69af4e3595b6 72 do {
noutram 0:69af4e3595b6 73 puts("Please choose:");
noutram 0:69af4e3595b6 74 puts("1 - Red");
noutram 0:69af4e3595b6 75 puts("2 - Yellow");
noutram 0:69af4e3595b6 76 puts("3 - Green");
noutram 0:69af4e3595b6 77 scanf("%64s", strInput); //Read a string
noutram 0:69af4e3595b6 78 hits = sscanf(strInput, "%d", &selection); //Look for an integer
noutram 0:69af4e3595b6 79 } while (hits != 1); //Repeat if not found
noutram 0:69af4e3595b6 80
noutram 0:69af4e3595b6 81 //Signal the thread
noutram 0:69af4e3595b6 82 switch (selection) {
noutram 0:69af4e3595b6 83 case 1:
noutram 0:69af4e3595b6 84 //Signal thread 1
noutram 3:de36dab8492f 85 t1.flags_set(RED_TOGGLE);
noutram 0:69af4e3595b6 86 break;
noutram 0:69af4e3595b6 87 case 2:
noutram 0:69af4e3595b6 88 //Signal thread 2
noutram 3:de36dab8492f 89 t2.flags_set(YELLOW_TOGGLE);
noutram 0:69af4e3595b6 90 break;
noutram 0:69af4e3595b6 91 case 3:
noutram 0:69af4e3595b6 92 //Signal thread 3
noutram 3:de36dab8492f 93 t3.flags_set(GREEN_TOGGLE);
noutram 0:69af4e3595b6 94 break;
noutram 0:69af4e3595b6 95 default:
noutram 0:69af4e3595b6 96 puts("Invalid option");
noutram 0:69af4e3595b6 97 break;
noutram 0:69af4e3595b6 98 } //end switch
noutram 0:69af4e3595b6 99
noutram 0:69af4e3595b6 100 } //end while
noutram 0:69af4e3595b6 101 } //end main