Nicholas Outram / Mbed OS Task622Solution-mbedos54

Solution to 6.2.2 updated for mbed os 5.4

Fork of Task622Solution-mbedos54 by Stage-1 Students SoCEM

main.cpp@9:c46e831f8e4a, 2017-04-03 (annotated)

Committer:
noutram
Date:
Mon Apr 03 14:02:26 2017 +0000
Revision:
9:c46e831f8e4a
Parent:
8:b28defacd894 
updated for mbed os 5.4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 0:f916cefba2f4 1 #include "mbed.h"
noutram 0:f916cefba2f4 2 #include "rtos.h"
noutram 2:70084af839d3 3 #include "string.h"
noutram 2:70084af839d3 4 #include <stdio.h>
noutram 2:70084af839d3 5 #include <ctype.h>
noutram 0:f916cefba2f4 6
noutram 8:b28defacd894 7 #define SWITCH1_RELEASE 1
noutram 8:b28defacd894 8
noutram 9:c46e831f8e4a 9 void thread1();
noutram 9:c46e831f8e4a 10 void thread2();
noutram 8:b28defacd894 11 void switchISR();
noutram 0:f916cefba2f4 12
noutram 0:f916cefba2f4 13 //Digital outputs
noutram 0:f916cefba2f4 14 DigitalOut onBoardLED(LED1);
noutram 0:f916cefba2f4 15 DigitalOut redLED(D7);
noutram 0:f916cefba2f4 16 DigitalOut yellowLED(D6);
noutram 0:f916cefba2f4 17 DigitalOut greenLED(D5);
noutram 0:f916cefba2f4 18
noutram 2:70084af839d3 19 //Serial Interface
noutram 2:70084af839d3 20 Serial pc(USBTX, USBRX);
noutram 2:70084af839d3 21
noutram 0:f916cefba2f4 22 //Digital inputs
noutram 0:f916cefba2f4 23 DigitalIn onBoardSwitch(USER_BUTTON);
noutram 8:b28defacd894 24 InterruptIn sw1(D4);
noutram 8:b28defacd894 25 DigitalIn sw2(D3);
noutram 8:b28defacd894 26
noutram 8:b28defacd894 27 //Threads
noutram 8:b28defacd894 28 Thread *t1;
noutram 8:b28defacd894 29 Thread *t2;
noutram 0:f916cefba2f4 30
noutram 0:f916cefba2f4 31 //Thread ID for the Main function (CMSIS API)
noutram 0:f916cefba2f4 32 osThreadId tidMain;
noutram 8:b28defacd894 33 osThreadId tid1;
noutram 8:b28defacd894 34 osThreadId tid2;
noutram 0:f916cefba2f4 35
noutram 8:b28defacd894 36
noutram 8:b28defacd894 37 //Called on the falling edge of a switch
noutram 8:b28defacd894 38 void switchISR() {
noutram 8:b28defacd894 39 t1->signal_set(SWITCH1_RELEASE); //Very short
noutram 8:b28defacd894 40 }
noutram 8:b28defacd894 41
noutram 8:b28defacd894 42 //High priority thread
noutram 9:c46e831f8e4a 43 void thread1()
noutram 4:dae8898e55fe 44 {
noutram 8:b28defacd894 45 redLED = 1;
noutram 4:dae8898e55fe 46 while (true) {
noutram 8:b28defacd894 47 Thread::signal_wait(SWITCH1_RELEASE);
noutram 8:b28defacd894 48 redLED = !redLED;
noutram 8:b28defacd894 49 Thread::wait(1000);
noutram 8:b28defacd894 50 redLED = !redLED;
noutram 8:b28defacd894 51 Thread::wait(1000);
noutram 8:b28defacd894 52 t1->signal_clr(SWITCH1_RELEASE); //Debounce
noutram 4:dae8898e55fe 53 }
noutram 2:70084af839d3 54 }
noutram 2:70084af839d3 55
noutram 8:b28defacd894 56 //This thread has normal priority
noutram 9:c46e831f8e4a 57 void thread2()
noutram 0:f916cefba2f4 58 {
noutram 8:b28defacd894 59 greenLED = 1;
noutram 2:70084af839d3 60 while (true) {
noutram 8:b28defacd894 61 //Thread::wait(2000);
noutram 8:b28defacd894 62 Thread::wait(500); // WAIT FOR 0.5 SECONDS
noutram 8:b28defacd894 63 greenLED = !greenLED;
noutram 6:2e463846b575 64 }
noutram 0:f916cefba2f4 65 }
noutram 0:f916cefba2f4 66
noutram 4:dae8898e55fe 67
noutram 8:b28defacd894 68 // Main thread
noutram 0:f916cefba2f4 69 int main() {
noutram 0:f916cefba2f4 70 redLED = 0;
noutram 0:f916cefba2f4 71 yellowLED = 0;
noutram 2:70084af839d3 72 greenLED = 0;
noutram 8:b28defacd894 73
noutram 8:b28defacd894 74 //Threads
noutram 9:c46e831f8e4a 75 t1 = new Thread(osPriorityRealtime);
noutram 9:c46e831f8e4a 76 t2 = new Thread(osPriorityNormal);
noutram 9:c46e831f8e4a 77
noutram 9:c46e831f8e4a 78 t1->start(thread1);
noutram 9:c46e831f8e4a 79 t2->start(thread2);
noutram 9:c46e831f8e4a 80
noutram 8:b28defacd894 81 // Thread IDs
noutram 0:f916cefba2f4 82 tidMain = Thread::gettid();
noutram 8:b28defacd894 83 tid1 = t1->gettid();
noutram 8:b28defacd894 84 tid2 = t2->gettid();
noutram 7:cd015e83995a 85
noutram 8:b28defacd894 86 //Hook up interrupt
noutram 8:b28defacd894 87 sw1.fall(switchISR);
noutram 8:b28defacd894 88
noutram 4:dae8898e55fe 89 pc.printf("Main Thread\n");
noutram 2:70084af839d3 90 while (true) {
noutram 4:dae8898e55fe 91 Thread::wait(osWaitForever);
noutram 0:f916cefba2f4 92 }
noutram 0:f916cefba2f4 93
noutram 0:f916cefba2f4 94 }
noutram 2:70084af839d3 95
noutram 2:70084af839d3 96