Daniel Worrall / Mbed 2 deprecated intervalMeasure

Measure the time interval between two consecutive rising edges

Dependencies:   dispBoB mbed PCA9635

intervalMeasure.cpp

Committer:
d_worrall
Date:
2011-07-11
Revision:
0:37bc70ca825c
Child:
1:b56440e55747

File content as of revision 0:37bc70ca825c:

#include "mbed.h"
#include "dispBoB.h"

dispBoB db(p28, p27, p26);          //instantiate a dispBoB object
InterruptIn trigger(p12);           //set up the trigger as an external interrupt
Timer t;

bool b = false;

void trig(){                       //function to call upon interrupt
    db.locate(0);
    db.printf("%06d", t.read_ms());
    if(b == false){
        t.start();
        b = true;
    } else {
        t.stop();
        db.printf("06d", t.read_ms());
        t.reset();
        t.start();
    }
}

int main() {
    trigger.mode(PullUp);           //activate internal pull up (hardware specific)
    db.init();
    db.cls();                       //clear screen
    trigger.rise(&trig);           //attach count() to interrupt on rising edge of trigger

    db.printf("%06d", t.read_ms());
    
}