PWM制御 のバックアップ(No.5)

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int iAna0 =  0;
int pPwm1 =  3;
int pPwm2 = 11;
 
int base = 0;
 
#define avelg 2
#define avesz (1<<avelg)
int avebf[avesz];
int avelc=0;
int ave=0;
 
int Ave(int value) {
  ave -= avebf[avelc];    avebf[avelc] = value >> avelg;
  ave += avebf[avelc];
 
  avelc++;
  if (avelc == avesz) avelc = 0;
 
  return ave;
}
 
void setPwvWidth0311(int r) {
  TCCR2B &= B11111000;
  switch(r) {
    case    1:  TCCR2B |= B00000001;
    case    8:  TCCR2B |= B00000010;
    case   32:  TCCR2B |= B00000011;
    default  : 
    case   64:  TCCR2B |= B00000100;
    case  128:  TCCR2B |= B00000101;
    case  256:  TCCR2B |= B00000110;
    case 1024:  TCCR2B |= B00000111;
  }
}
 
void setup() {
  Serial.begin(9600);
  
  setPwvWidth0311(128);
 
  pinMode(pPwm1, OUTPUT);
  pinMode(pPwm2, OUTPUT);
  
  pinMode( 8, OUTPUT);
  pinMode( 9,  INPUT);
  pinMode(10, OUTPUT);
  
  analogWrite(pPwm1, 0 );
  analogWrite(pPwm2, 0 );
  
  digitalWrite( 8,  LOW);
  digitalWrite(10, HIGH);
 
  base = analogRead(iAna0)+10;
  Serial.print("base == ");
  Serial.println(base);
  
  for(int i = 0; i<avesz; i++) {
    avebf[i] = 0;
  }
}
 
void loop() {
  int sw    = digitalRead(9);
  int value = analogRead(iAna0);
  int ave = Ave(value);
  int acc   = 0;
  
  
  if (sw == LOW) {
    acc = (1024-ave)/4;
  }
  else {
    acc = (ave - base)/2;
    if (acc <  5) acc =   0;
    if (acc >254) acc = 254;
  }
  if (1) {
    Serial.print(value);
    Serial.print("\t");
    Serial.print(ave);
    Serial.print("\t");
    Serial.println(acc);
  }
  
  analogWrite(pPwm1, 0 );
  analogWrite(pPwm2, acc);
  delay(100);
}