M5Atom LITE/M5Stamp PICO ONBOARD COLOR LED

DEMO.ino

/**
* M5Atom LITE / M%Stamp PICO オンボードのカラーLED 色を変えるデモプログラム
**/
#define RGBPIN 27
#define BTNPIN 39
#define LEDPIN 25
int BTN = LOW ;
void sendBitData(uint32_t bitData) {
  for (uint32_t sendBit = 0x00800000;sendBit!=0;sendBit>>=1) {
    if ((bitData & sendBit) == 0 ) {
      digitalWrite(RGBPIN,HIGH);
      for (int L=0;L<2;L++) {
        BTN = digitalRead(BTNPIN);
      }
      digitalWrite(RGBPIN,LOW);
      for (int L=0;L<5;L++) {
        BTN = digitalRead(BTNPIN);
      }
    } else {
      digitalWrite(RGBPIN,HIGH);
      for (int L=0;L<3;L++) {
        BTN = digitalRead(BTNPIN);
      }
      digitalWrite(RGBPIN,LOW);
      for (int L=0;L<3;L++) {
        BTN = digitalRead(BTNPIN);
      }
    }
  }
}

void setup() {
  pinMode(RGBPIN,OUTPUT) ;
  pinMode(BTNPIN,INPUT) ;
  pinMode(LEDPIN,OUTPUT) ;
  digitalWrite(LEDPIN,LOW);
  digitalWrite(RGBPIN,LOW);
  delayMicroseconds(80) ;
}

void loop() {
  digitalWrite(LEDPIN,LOW);
  sendBitData(0x00FF0000) ;
  delay(500) ;
  sendBitData(0x0000FF00) ;
  delay(500) ;
  sendBitData(0x000000FF) ;
  delay(500) ;
  
  for (int i=0;i<256;i+=16) { // G-B
     uint32_t rgb = i << 16 | 0x000000FF ;
     sendBitData(rgb) ;
     delay(100) ;
  }
  for (int i=0;i<256;i+=16) { // GR-
     uint32_t rgb = i << 8 | 0x00FF0000 ;
     sendBitData(rgb) ;
     delay(100) ;
  }
  for (int i=0;i<256;i+=16) { // -RB
     uint32_t rgb = i | 0x0000FF00 ;
     sendBitData(rgb) ;
     delay(100) ;
  }
}

TEST.ino

/**
* 空ループの経過時間を調整するためのテストプログラム
**/

#define RGBPIN 27
#define BTNPIN 39
#define LEDPIN 25
int BTN = LOW ;

void setup() {
  Serial.begin(115200);
  while (!Serial) { delay(1); }

  pinMode(RGBPIN,OUTPUT) ;
  pinMode(LEDPIN,OUTPUT) ;
  pinMode(BTNPIN,INPUT) ;

  digitalWrite(RGBPIN,LOW) ;
  delayMicroseconds(80) ;

  Serial.println("--- STRAT");
  digitalWrite(LEDPIN,HIGH) ;

  unsigned long stratTime = micros( ) ;  
  // -----
  for (int N=0;N<1000;N++) {
    digitalWrite(LEDPIN,HIGH) ;
    for (int L=0;L<3;L++) {
        BTN = digitalRead(BTNPIN);
    }
  }
  // -----
  unsigned long endTime = micros( ) - stratTime ;
  Serial.print("--- BIT 1 :");
  Serial.println(endTime);

  stratTime = micros( ) ;  
  // -----
  for (int N=0;N<1000;N++) {
    digitalWrite(LEDPIN,HIGH) ;
    for (int L=0;L<2;L++) {
        BTN = digitalRead(BTNPIN);
    }
  }
  // -----
  endTime = micros( ) - stratTime ;
  Serial.print("--- BIT 0 HIGH :");
  Serial.println(endTime);

  stratTime = micros( ) ;  
  // -----
  for (int N=0;N<1000;N++) {
    digitalWrite(LEDPIN,HIGH) ;
    for (int L=0;L<5;L++) {
        BTN = digitalRead(BTNPIN);
    }
  }
  // -----
  endTime = micros( ) - stratTime ;
  Serial.print("--- BIT 0 LOW :");
  Serial.println(endTime);

  Serial.println("--- END");
  digitalWrite(LEDPIN,LOW) ;
}

void loop() {
}