「M5Stack用回転角ユニット」を動かす: xshige's beta notes

2022年1月 1日 (土)

「M5Stack用回転角ユニット」を動かす

2022/1/1
初版

UNIT_ANGLE

概要

UNIT_ANGLE「M5Stack用回転角ユニット」を動かす。
ソースは共通化しており、ターゲットのM5Atom,M5StickCPlus,M5Core2をplatformio.iniの内容で切り替えてビルドする。
直接関係ない話だが、M5Atom用に提供されているUNIT_ANGLEのサンプル・スケッチは、なぜかArduino-IDEではエラーになりコンパイルできなかった。
(なにかしらの環境の問題のようだ)

ソース

src/main.ino


  /*
  *******************************************************************************
  * Copyright (c) 2021 by M5Stack
  *                  Equipped with Atom-Lite/Matrix sample source code
  *                          配套  Atom-Lite/Matrix 示例源代码
  * Visit the website for more information：https://docs.m5stack.com/en/products
  * 获取更多资料请访问：https://docs.m5stack.com/zh_CN/products
  *
  * describe：Angle.  角度计
  * date：2021/8/9
  *******************************************************************************
    Description: Read the Angle of the angometer and convert it to digital display
    读取角度计的角度，并转换为数字量显示
  */

  #ifdef M5ATOM
  #include <M5Atom.h>
  #endif
  #ifdef M5STICK_CP
  #include <M5StickCPlus.h>
  #endif
  #ifdef M5C2
  #include <M5Core2.h>
  #endif

  #ifdef M5ATOM
  int sensorPin = 32; // set the input pin for the potentiometer.  设置角度计的输入引脚
  #endif
  #ifdef M5STICK_CP
  int sensorPin = 33;
  #endif
  #ifdef M5C2
  int sensorPin = 33;
  #endif

  int last_sensorValue = 100; // Stores the value last read by the sensor.  存储传感器上次读取到的值
  int cur_sensorValue = 0;  // Stores the value currently read by the sensor.  存储传感器当前读取到的值

  void setup() {
    M5.begin();
    pinMode(sensorPin, INPUT);
    dacWrite(25, 0);
  #ifdef M5STICK_CP
    M5.Lcd.setRotation(3);
    M5.Lcd.setCursor(0, 10, 2);
    M5.Lcd.print("The value of ANGLE: ");
  #endif
  #ifdef M5C2
    M5.Lcd.setTextSize(2);  //Set the font size to 2.  设置字体大小为2
    M5.Lcd.print("the value of ANGLE: ");
  #endif
  }

  void loop() {
    // read the value from the sensor:
    cur_sensorValue = analogRead(sensorPin);

  #ifdef M5ATOM
    if(abs(cur_sensorValue - last_sensorValue) > 10){ //If the difference is more than 10.  如果差值超过10
      Serial.print("the value of ANGLE: ");
      Serial.println(cur_sensorValue);
      last_sensorValue = cur_sensorValue;
    }
    delay(200);
  #endif
  #ifdef M5STICK_CP
    M5.Lcd.setCursor(80, 50, 6);
    if(abs(cur_sensorValue - last_sensorValue) > 10){//debaunce
      M5.Lcd.fillRect(100, 50, 100, 40, BLACK);
      M5.Lcd.print(cur_sensorValue);
      last_sensorValue = cur_sensorValue;
    }
    delay(50);
  #endif
  #ifdef M5C2
    M5.Lcd.setCursor(0, 25);
    if(abs(cur_sensorValue - last_sensorValue) > 10){//debaunce
      M5.Lcd.fillRect(0, 25, 100, 25, BLACK);
      M5.Lcd.print(cur_sensorValue);
      last_sensorValue = cur_sensorValue;
    }
    delay(50);
  #endif
  }

platformio.ini

M5Atom用


  [env:M5ATOM]
  platform = espressif32
  board = m5stick-c
  framework = arduino
  build_flags = -DM5ATOM
  upload_poert = /dev/ttyUSB0
  monitor_speed = 115200

  lib_deps =
      m5stack/M5Atom @ ^0.0.7
      fastled/FastLED @ ^3.4.0
      adafruit/Adafruit NeoPixel @ ^1.10.3


  lib_ldf_mode = deep+

M5StickCPlus用


  [env:M5StickCPlus]
  platform = espressif32
  board = m5stick-c
  framework = arduino
  build_flags = -DM5STICK_CP
  monitor_speed = 115200
  lib_ldf_mode = deep+

  lib_deps =
      m5stack/M5StickCPlus @ ^0.0.5
      tinyu-zhao/FFT @ ^0.0.1
      m5stack/UNIT_ENV @ ^0.0.2
      adafruit/Adafruit BMP280 Library @ ^2.5.0
      adafruit/Adafruit Unified Sensor @ ^1.1.4
      adafruit/Adafruit NeoPixel @ ^1.10.3

M5Core2用


  [env:m5core2]
  platform = espressif32
  board = m5stack-core2
  framework = arduino
  upload_speed = 2000000
  monitor_speed = 115200
  board_build.partitions = default_16MB.csv

  build_flags = 
      -DM5C2
      -DCORE_DEBUG_LEVEL=4
      -DBOARD_HAS_PSRAM
      -mfix-esp32-psram-cache-issue

  lib_deps =
      https://github.com/m5stack/M5Core2.git
      https://github.com/FastLED/FastLED
      ;https://github.com/m5stack/M5Core2/blob/master/examples/core2_for_aws/ArduinoECCX08.zip
      lovyan03/LovyanGFX
      adafruit/Adafruit BMP280 Library @ ^2.5.0
      adafruit/Adafruit Unified Sensor @ ^1.1.4    
      m5stack/UNIT_ENV @ ^0.0.2 
      adafruit/Adafruit NeoPixel @ ^1.10.3

  lib_ldf_mode = deep+

動作

実態はポテンショメーターなのでアナログで読み込んだ値がLCDに表示される。
(M5Atomではシリアルに出力される)

M5Atomの出力例(シリアル出力)：

$ bt -L 1
  No port specified, using ttyUSB0 (last registered). Use -l to list ports.
  Trying port ttyUSB0... Connected to ttyUSB0 at 115200 bps.
  Escape character is 'Ctrl-]'. Use escape followed by '?' for help.
  the value of ANGLE: 2739
  the value of ANGLE: 2704
  the value of ANGLE: 2717
  <省略>
  the value of ANGLE: 706
  the value of ANGLE: 1059
  the value of ANGLE: 2411
  the value of ANGLE: 4095
  the value of ANGLE: 4049
  the value of ANGLE: 4095
  ...