FlawedLed.cpp

#include "mbed.h"
 
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);

//Create an empty thread object ready to attach a function
Thread threadOne;
Thread threadTwo;

Mutex theLock;

//Left as Exersie to turn into Libaray
class MyCounter{
    public:
        MyCounter(){
            theCount = 0;
        }

        int getCount(){
            return theCount;
        }
        
        void setCount(int count){
            theCount = count;
        }
    
    private:
        int theCount;

};

//As We dont have counter in a Libary, Define int the Global Scope here
//Rather than the top of the page (which is normal)
MyCounter theCounter;


//Increment counter by 1
void incOne(){
    Timer t;
    t.start();
    while(1){

        //DEbug LED
        led2 = !led2;

        //Simulate getting data fro somewhere
        int count = theCounter.getCount();
        t.reset();
        while (t.read_ms() < 500){
            //Simulate Processing
        }
        //And Write it back
        theCounter.setCount(count+1);
        t.reset();
        wait(0.5); //Avoid locking the thread
    }
}

void incFive(){
    Timer t;
    t.start();
    while(1){
        
        //Debug LED
        led3 = !led3;

        //Simulate getting data fro somewhere
        int count = theCounter.getCount();
        t.reset();
        while (t.read_ms() < 500){
            //Simulate Processing
        }
        //And Write it back
        theCounter.setCount(count+10);
        t.reset();
        wait(0.5); //Avoid locking the thread
    }
}



//Main Program
int main() {
	//Attach the function to the Thread then Start it

    threadOne.start(incOne); 
    wait(0.5);
    threadTwo.start(incFive);
    

    while (true) {
        led1 = !led1;
        printf("Main is %d\n", theCounter.getCount());
        wait(0.75);
    }
}