File content as of revision 1:1e3eb2d1496b:

#include "mbed.h"
#include "QEI.h"
DigitalOut w1(PB_6);
DigitalOut w2(PB_7);
DigitalOut w3(PB_8);
DigitalOut w4(PB_9);
PwmOut mypwm1(PA_9);
PwmOut mypwm2(PA_8);
Serial pc(PB_10, PB_11);
Ticker toggle_time_ticker;
QEI wheel(PA_2, PA_3, NC, 11, QEI::X4_ENCODING);
QEI wheel2(PA_6, PA_7, NC, 11, QEI::X4_ENCODING);
int x,y;
float a= 0.01, b = 0.00860454;
void time_ticker();
void serialread();
int main()
{
    mypwm1.period_ms(10);
    mypwm2.period_ms(10);
    toggle_time_ticker.attach(&time_ticker, 0.2);
    pc.attach(&serialread);
    mypwm1.pulsewidth(a);
     mypwm2.pulsewidth(b);
    wheel.reset();
    wheel2.reset();
    w1 = 0;
  w2 = 0;
    w3 = 0;
    w4 = 0; 
    while(1)
    {
        
    }   
}

void time_ticker(){
    x = wheel.getPulses();
    y = wheel2.getPulses();
    wheel.reset();
    wheel2.reset();
  pc.printf("x:%d y:%d\n",x,y);
}

void serialread(){
    switch (pc.getc())
  {
    case '1':
          w1=0;
          w4=0;
        break;
    case '2':
            w1=1;
          w4=1;
        break;
    default:
        break;
  }
}