M5DialにUnitKeyとFaderUnitを接続してAvatarの顔等を変更するサンプル

formatString.hpp

/*
see also https://stackoverflow.com/questions/7315936/which-of-sprintf-snprintf-is-more-secure/35401865#35401865
If you leave memory management to std::string, you don't have to free it yourself.
*/

// Using template
#include <string>
template<typename ...Args> std::string formatString(const char* fmt, Args... args)
{
    size_t sz = snprintf(nullptr, 0U, fmt, args...); // calculate length
    char buf[sz + 1];
    snprintf(buf, sizeof(buf), fmt, args...);
    return std::string(buf, buf + sz + 1);
}

// Using vsnprintf
#include <stdio.h>
#include <stdarg.h>
std::string formatString(const char* fmt, ...)
{
    va_list args;
    va_start(args, fmt);

    size_t sz = vsnprintf(nullptr, 0U, fmt, args); // calculate length
    char buf[sz + 1];
    vsnprintf(buf, sizeof(buf), fmt, args);
    va_end(args);
    return std::string(buf, buf + sz + 1);
}

gistfile1.txt

#include <Arduino.h>
#include <M5Dial.h>
#include <Avatar.h>
#include "formatString.hpp"
#include <FastLED.h>

using namespace m5avatar;

#define NUM_LEDS_FADER 14
#define LED_PIN_FADER  2 
#define DATA_PIN_FADER 1

#define NUM_LEDS_KEY 1
#define LED_PIN_KEY  13
#define DATA_PIN_KEY 15

CRGB leds_fader[NUM_LEDS_FADER];
CRGB leds_key[NUM_LEDS_KEY];

CRGB red(255, 0, 0);
CRGB orange(255, 165, 0);
CRGB yellow(255, 255, 0);
CRGB green(0, 255, 0);
CRGB lightgreen(32, 178, 170);
CRGB blue(0, 0, 255);
CRGB darkblue(0, 0, 128);

CRGB color_table[7] {red, orange, yellow, green, lightgreen, blue, darkblue};

uint8_t beginHue   = 0;
uint8_t deltaHue   = 30;
uint8_t brightness = 100;
uint16_t rawADC    = 0;


Avatar avatar;

void setup() {
    auto cfg = M5.config();
    //M5.begin(cfg);
    M5Dial.begin(cfg, true, false);
    M5.Log.setLogLevel(m5::log_target_display, ESP_LOG_NONE);
    M5.Log.setLogLevel(m5::log_target_serial, ESP_LOG_INFO);
    M5.Log.setEnableColor(m5::log_target_serial, false);
    M5_LOGI("Avatar Start");
    //M5.Log.printf("M5.Log avatar Start\n");
    float scale = 0.0f;
    int8_t position_top = 0;
    int8_t position_left = 0;
    uint8_t display_rotation = 1; // ディスプレイの向き(0〜3)
    scale = 0.8f;
    position_top =  0;
    position_left = -40;
    display_rotation = 2;
    avatar.setScale(scale);
    avatar.setPosition(position_top, position_left);
    avatar.init(1); // start drawing
    avatar.setSpeechFont(&fonts::efontCN_12);

    FastLED.addLeds<NEOPIXEL, LED_PIN_FADER>(leds_fader, NUM_LEDS_FADER);
    delay(1000);
    pinMode(DATA_PIN_FADER, INPUT);
    // M5ADial(StampS3)は外部マイク(PDMUnit)なので設定を行う。(Port.A)
    //fill_rainbow(leds_fader, NUM_LEDS_FADER, beginHue, deltaHue);
    //fill_rainbow(leds, NUM_LEDS_FADER, beginHue, deltaHue);
    for(int i=0; i<NUM_LEDS_FADER / 2; i++) {
        leds_fader[i] = color_table[i];
        leds_fader[i+(NUM_LEDS_FADER/2)] = color_table[NUM_LEDS_FADER / 2 - i - 1];
    }

    pinMode(DATA_PIN_KEY, INPUT);
}

long oldPosition = -999;
int previousState = HIGH;
int readState = 0;
bool ledState = false;

void loop() {
    std::string s;
    rawADC = analogRead(DATA_PIN_FADER);
    brightness = map(rawADC, 0, 4095, 10,
                     170);  // The mapping ADC value is the brightness value
                            // range  映射ADC值为亮度值范围
    FastLED.setBrightness(brightness);  // Adjust the brightness of the FADER
                                        // LED 调整FADER LED灯亮度
    FastLED.show();
    float mouth_ratio = brightness / 150.0f;
    avatar.setMouthOpenRatio(mouth_ratio);

    s = formatString("P:%d,A:%d,K:%d", oldPosition, rawADC, readState);
    avatar.setSpeechText(s.c_str());
    M5_LOGI("Loop");
    M5Dial.update();
    long newPosition = M5Dial.Encoder.read();
    if (newPosition != oldPosition) {
        M5Dial.Speaker.tone(8000, 20);
        oldPosition = newPosition;
        avatar.setRotation(10 * oldPosition);
        M5_LOGI("nowPosition%d", newPosition);
    }
    if (M5Dial.BtnA.wasPressed()) {
       //M5Dial.Encoder.readAndReset();
    }
    if (M5Dial.BtnA.pressedFor(5000)) {
       //M5Dial.Encoder.write(100);
    }
      // スイッチ操作またはノイズによる状態変化検知
    readState = digitalRead(DATA_PIN_KEY);
    // LED点灯時は消灯、消灯時は点灯
    if (readState == 0) {
        avatar.setExpression(Expression::Happy);
    } else {
        avatar.setExpression(Expression::Neutral);
    }

}

platformio.ini

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[platformio]
default_envs = m5stack-dial

[env]
platform = espressif32 @ 6.5.0 
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
board_build.f_flash = 80000000L
board_build.filesystem = spiffs
board_build.partitions = default_16MB.csv
build_flags = -DCORE_DEBUG_LEVEL=4
lib_deps = 
    meganetaaan/[email protected]
    m5stack/[email protected]
    m5stack/[email protected]
    FastLED/FastLED
lib_ldf_mode = deep

[env:m5stack-dial]
board = esp32-s3-devkitc-1
board_build.partitions = default_8MB.csv
build_flags = 
    ${env.build_flags}
    -DARDUINO_M5Stack_StampS3