Two PWM Signal with Dead Time

[ishaqmkhan01]

Hello!

GENERATION OF TWO ANTI PHASE PWM SIGNALS WITH DEAD TIME AND ADJUSTABLE DUTY CYCLE ON ARDUINO

So I was trying to achieve a dead time using this code in the video and down below. The frequency used in the video and the code attached below is only for 31KHz. When I copied the code and uploaded it to my Arduino, it was working fine with expected results.

#define ANALOG_IN_PIN A0

void setup ()
{ 
  //TCCR2B = TCCR2B & 0xF8 | 0x01; 
  //TCCR0B = TCCR0B & B11111000 | B00000001; // 62.5KHz //D4 & 13
  //TCCR0A |= 0x30; // inversion
  TCCR1B = TCCR1B & B11111000 | B00000001; // 31KHz //D11 & 12
  TCCR1A |= 0x30; // inversion
}

void loop()
{
  int duty = map(A0, 0, 1023, 0, 122);
  analogWrite(4,duty)
  analogWrite(13,255 - duty);
}

However, I need it to work with 62.5KHz. When I change the code to make it a 62.5KHz, we only got a dead-time on one end of the Squarewave but not the other, as shown below.

#define ANALOG_IN_PIN A0

void setup ()
{ 
  TCCR0B = TCCR0B & B11111000 | B00000001; // 62.5KHz //D4 & 13
  TCCR0A |= 0x30; // inversion
}

void loop()
{

  int duty = map(31000, 0, 1023, 0, 122);
  analogWrite(4,duty);
  analogWrite(13,255 - duty);
}

Can someone help me navigate this problem!

[UKHeliBob]

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[DrDiettrich]

@ishaqmkhan01

it was working fine with expected results.

Please show the scope output for the initial code.
Which Arduino/controller are you using?

@ishaqmkhan01

int duty = map(31000, 0, 1023, 0, 122);

Please fix that crap.

Why do you use timer 0 which is used for system timing?

Why do you expect that the previously working code will continue working after you apply weird modifications to it?

[gilshultz]

I do not have time to read code from a video, I will help somebody else with the time.