PWM_frequency_Arduino_change/PWM_CHANGE_MEGA.c at master · fizcris/PWM_frequency_Arduino_change · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

  #if  defined(__AVR_ATmega2560__)
void setPwmFrequencyMEGA2560(int pin, int divisor) {
  byte mode;
      switch(divisor) {
      case 1: mode = 0x01; break;
      case 2: mode = 0x02; break;
      case 3: mode = 0x03; break;
      case 4: mode = 0x04; break;
      case 5: mode = 0x05; break;
      case 6: mode = 0x06; break;
      case 7: mode = 0x07; break;
      default: return;
      }

        switch(pin) {
      case 2:  TCCR3B = TCCR3B  & 0b11111000 | mode; break;
      case 3:  TCCR3B = TCCR3B  & 0b11111000 | mode; break;
      case 4:  TCCR0B = TCCR0B  & 0b11111000 | mode; break;
      case 5:  TCCR3B = TCCR3B  & 0b11111000 | mode; break;
      case 6:  TCCR4B = TCCR4B  & 0b11111000 | mode; break;
      case 7:  TCCR4B = TCCR4B  & 0b11111000 | mode; break;
      case 8:  TCCR4B = TCCR4B  & 0b11111000 | mode; break;
      case 9:  TCCR2B = TCCR0B  & 0b11111000 | mode; break;
      case 10: TCCR2B = TCCR2B  & 0b11111000 | mode; break;
      case 11: TCCR1B = TCCR1B  & 0b11111000 | mode; break;
      case 12: TCCR1B = TCCR1B  & 0b11111000 | mode; break;
      case 13: TCCR0B = TCCR0B  & 0b11111000 | mode; break;
      default: return;
    }

}

  #endif