University of Plymouth - Stages 1, 2 and 3 / Mbed OS Task330_blocking

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Fork of Task330_blocking by University of Plymouth - Stages 1, 2 and 3

main.cpp

Committer:
noutram
Date:
2017-10-24
Revision:
5:a9a9d3b7f62a
Parent:
4:e71c1e3bc4a6
Child:
6:2050203fd22b

File content as of revision 5:a9a9d3b7f62a:

#include "mbed.h"
#define N 1000000
#define RELEASED 0
#define PRESSED  1

//Hardware objects
DigitalOut red_led(PE_15);     //CountUp is in its critical section
DigitalOut yellow_led(PB_10);  //CountDown is in its critical section
DigitalOut green_led(PB_11);   //counter != 0
DigitalOut onboardLED(LED1);

DigitalIn button(USER_BUTTON);
DigitalIn sw1(PE_12);
DigitalIn sw2(PE_14);

//The code below is hugely flawed and is only to
//illustrate the problem of blocking hardware
int main() {
    
    //Light up
    red_led    = 1;
    yellow_led = 1;
    green_led  = 1;
    onboardLED = 1;
    
    //Now loop forever
    while(1) { 
    
        while (sw1 == RELEASED) {};
        wait(0.2);
        while (sw1 == PRESSED) {};    
        red_led = !red_led;
        wait(0.2);

        while (sw2 == RELEASED) {};
        wait(0.2);
        while (sw2 == PRESSED) {};    
        green_led = !green_led;
        wait(0.2);

        //Flash the yellow
        yellow_led = !yellow_led;
        wait(0.5);
    };
}