title: Arduino Every TCCR1A 'not declared in this scope'
body: <p>I have created a class that outputs a 25K PWM signal on either pin 9 or pin 10 for the Arduino Nano. And on the Nano it works perfectly. However if I change the board to "Arduino Every" I get <code>'TCCR1A' was not declared in this scope'</code>. I am including <code>&lt;Arduino.h&gt;</code> but it seams these defines are non-existing for the Arduino Every board? This board is suppose to be compatible with the Nano, why are these defines not found then?</p>
  
  <p>My code (note: separate C++ file, so its not the sketch file) :</p>
  
  <pre><code>#include &lt;Arduino.h&gt;
  #include "HixPinPWM25KHz.h"
  
  HixPinPWM25KHz::HixPinPWM25KHz(int nPinNumber): HixPin(nPinNumber) {
  }
  
  void HixPinPWM25KHz::begin() {
    //25KHz PWM only supported on ping 9 and 10
    if ( (m_nPinNumber != 9) &amp;&amp; (m_nPinNumber != 10) ) {
      return;
    }
    // Configure Timer 1 for PWM @ 25 kHz.
    TCCR1A = 0;           // undo the configuration done by...
    TCCR1B = 0;           // ...the Arduino core library
    TCNT1  = 0;           // reset timer
    TCCR1A = _BV(COM1A1)  // non-inverted PWM on ch. A
             | _BV(COM1B1)  // same on ch; B
             | _BV(WGM11);  // mode 10: ph. correct PWM, TOP = ICR1
    TCCR1B = _BV(WGM13)   // ditto
             | _BV(CS10);   // prescaler = 1
    ICR1   = 320;         // TOP = 320
    pinMode(m_nPinNumber, OUTPUT);
    analogWrite(50);
  }
  
  void HixPinPWM25KHz::analogWrite(float percent) {
    int value = (int) ( (percent * (float)320) / (float)100 );
    switch (m_nPinNumber) {
      case 9:
        OCR1A = value;
        break;
      case 10:
        OCR1B = value;
        break;
      default:
        // no other pin will work
        break;
    }
  }
  </code></pre>