Stage-1 Students SoCEM
/
Task613Solution
Task 6.1.3
main.cpp
- Committer:
- noutram
- Date:
- 2016-03-08
- Revision:
- 0:90e393878517
File content as of revision 0:90e393878517:
#include "mbed.h" #include "rtos.h" #define RED_OFF 1 #define YELLOW_OFF 2 #define GREEN_OFF 4 #define ALL_OFF 7 //Function declarations void Function1(void const *args); void Function2(void const *args); void Function3(void const *args); void Function4(void const *args); //I/O DigitalOut onBoardLED(LED1); DigitalOut redLED(D7); DigitalOut yellowLED(D6); DigitalOut greenLED(D5); DigitalIn onBoardSwitch(USER_BUTTON); DigitalIn SW1(D4); DigitalIn SW2(D3); Thread* t1; Thread* t2; Thread* t3; Thread* t4; //Thread ID osThreadId idMain; osThreadId id1; osThreadId id2; osThreadId id3; osThreadId id4; void Function1(void const *args) { while (true) { redLED = !redLED; if (redLED == 0) { t2->signal_set(RED_OFF); } Thread::wait(1000); } } void Function2(void const *args) { while (true) { Thread::signal_wait(RED_OFF); yellowLED = !yellowLED; if (yellowLED == 0) { t3->signal_set(YELLOW_OFF); } } } //Green Flashing void Function3(void const *args) { while (true) { Thread::signal_wait(YELLOW_OFF); greenLED = !greenLED; if (greenLED == 0) { t4->signal_set(GREEN_OFF); } } } //This function waits for signals from all other threads void Function4(void const *args) { while (true) { Thread::signal_wait(GREEN_OFF); //Signal main thread osSignalSet(idMain, ALL_OFF); } } //Main thread int main() { redLED = 0; yellowLED = 0; greenLED = 0; //Main thread ID idMain = osThreadGetId(); //CMSIS RTOS call //Create and run threads t4 = new Thread(Function4); t1 = new Thread(Function1); t2 = new Thread(Function2); t3 = new Thread(Function3); //Dynamically allocated //Thread ID id1 = t1->gettid(); id2 = t2->gettid(); id3 = t3->gettid(); id4 = t4->gettid(); while(1) { //Wait for the ALL_ON signal osSignalWait(ALL_OFF,osWaitForever); printf("ALL OFF\n"); } }