time function millis does interfere with other code

hello!

i using piece of code seems interfere millis function:

code: [select]

void f_meter_start() {
  f_ready=0;                      // reset period measure flag
  i_tics=0;                        // reset interrupt counter
  sbi (gtccr,psrasy);              // reset presacler counting
  tcnt2=0;                         // timer2=0
  tcnt1=0;                         // counter1 = 0
  cbi (timsk0,toie0);              // dissable timer0 again // millis , delay
  sbi (timsk2,ocie2a);             // enable timer2 interrupt
  tccr1b = tccr1b | 7;             //  counter clock source = pin t1 , start counting now
}

// timer2 interrupt service invoked hardware timer2 every 2ms = 500 hz
//  16mhz / 256 / 125 / 500 hz
// here gatetime generation freq. measurement takes place:
//******************************************************************
isr(timer2_compa_vect) {

  if (i_tics==50) {         // multiple 2ms = gate time = 100 ms
                            // end of gate time, measurement ready
    tccr1b = tccr1b & ~7;   // gate off  / counter t1 stopped
    cbi (timsk2,ocie2a);    // disable timer2 interrupt
    sbi (timsk0,toie0);     // ensable timer0 again // millis , delay
    f_ready=1;              // set global flag end count period

                            // calculate frequeny value
    freq_in=0x10000 * mlt;  // mukt #ovverflows 65636
    freq_in += tcnt1;       // add counter1 value
    mlt=0;

  }
  i_tics++;                 // count number of interrupt events
  if (tifr1 & 1) {          // if timer/counter 1 overflow flag
    mlt++;                  // count number of counter1 overflows
    sbi(tifr1,tov1);        // clear timer/counter 1 overflow flag
  }

}

does knows workaround or how can use (another) millis timer? use code for  theremin sensor , @ same time open more solenoid valves. cannot use delay.


thank much!

comment out line:

code: [select]


  cbi (timsk0,toie0);              // dissable timer0 again // millis , delay


you'll more jitter on measuring, it's going allow millis() , delay work.

Arduino Forum > Using Arduino > Programming Questions > time function millis does interfere with other code

arduino