M5Atomの使い方

https://scrapbox.io/files/63dc6a907ac8fc001e8a1516.png

M5 Atomが使えるまでの手順

ドキュメント

↑を追加後にボードマネージャからM5 で検索（詳細は「ボードマネージャの追加」参照）

M5StickCかEsp32PICOを指定

M5 Atomを指定

※Arduino IDEのインストールについてはこちら （

（サイトごと日本語翻訳すると"JUST DOWNLOAD"の文字が消えるので注意）

ライブラリの追加

M5Atom

fastLED

※M5Atom liteを使う時の注意点

センサ入力（アナログ入力/AD変換）：analogRead()

G32，G33のみOK

モータ制御（DA変換，PWM出力）: dacWrite()

G25，G26のみOK

ESP32Servo は 他でもOK

LEDのPWM調光（ledcWrite() ）はすべてのポートでOK （サーボも動く）

digitalRead()，digitalWrite()もすべてのポートでもOK

サンプルプログラム

M5Atom LiteでLチカ①

code: Blink.ino

void setup()

{

M5.begin(true, true, true); //　初期化

delay(10); //10msec 待機

pinMode(LED_BUILTIN, OUTPUT); //LED_BUILTIN（ポートG25）を出力に設定

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)

delay(1000); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW

delay(1000); // wait for a second

}

M5Atom LiteでLチカ② ボタンで点滅速度が変化

code: Blink.ino

void setup()

{

M5.begin(true, true, true);

delay(10);

pinMode(LED_BUILTIN, OUTPUT); //LED_BUILTIN（ポートG25）を出力に設定

}

uint8_t FSM = 0;

void loop()

{

if (M5.Btn.wasPressed())

{

FSM++;

if (FSM >= 4)

{

FSM = 0;

}

}

switch (FSM)

{

case 0:

digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)

delay(1000); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW

delay(1000); // wait for a second

break;

case 1:

digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)

delay(500); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW

delay(500); // wait for a second

break;

case 2:

digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)

delay(200); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW

delay(500); // wait for a second

break;

case 3:

digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)

delay(50); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW

delay(50); // wait for a second

break;

default:

break;

}

delay(50);

M5.update();

}

フォトリクレクタ読み取り①

code: M5Atom_PhotoReflector.ino

/*

AnalogReadSerialを参考

*/

void setup()

{

M5.begin(true, true, true);

delay(10);

}

void loop() {

// read the input on analog pin 33:

int sensorValue = analogRead(33);

// print out the value you read:

Serial.println(sensorValue);

delay(1); // delay in between reads for stability

}

フォトリクレクタ読み取り②

code: M5Atom_PhotoReflector2.ino

/*

AnalogInOutSerialを参考

*/

const int analogInPin = 33; // Analog input pin that the potentiometer is attached to

const int analogOutPin = 25; // Analog output pin that the LED is attached to

int sensorValue = 0; // value read from the pot

int outputValue = 0; // value output to the PWM (analog out)

void setup()

{

M5.begin(true, true, true);

delay(10);

}

void loop() {

// read the analog in value:

sensorValue = analogRead(analogInPin);

// map it to the range of the analog out:

outputValue = map(sensorValue, 0, 1023, 0, 255);

// change the analog out value:

// analogWrite(analogOutPin, outputValue); // print out the value you read: 各自書き換えましょう

// print the results to the Serial Monitor:

Serial.print(sensorValue);

Serial.print(",");

Serial.println(outputValue);

delay(1); // delay in between reads for stability

}

実習で使用するフォトリフレクタ

※ 参考 Atom matrixを使う場合

ドキュメント

ディスプレイ表示設定用のツールもここにある Atom pixel tool

M5Atom MatrixでLチカ

code: Atom_Matrix_LED_Display.ino

void setup() {

// void M5Atom::begin(bool SerialEnable , bool I2CEnable , bool DisplayEnable )

M5.begin(true, false, true);

}

void loop() {

for (uint32_t i = 0; i < 25;i++){

M5.dis.drawpix(i, 0x0000ff);

delay(50);

}

for (uint32_t i = 0; i < 25;i++){

M5.dis.drawpix(i, 0x00ff00);

delay(50);

}

for (uint32_t i = 0; i < 25;i++){

M5.dis.drawpix(i, 0xff0000);

delay(50);

}

for (uint32_t i = 0; i < 25; i++)

{

M5.dis.drawpix(i, 0x000000);

delay(50);

}

}