Air Quality 获取SEN55传感器相关数据

#include <M5Unified.h>
#include <Wire.h>
#include <SensirionI2CSen5x.h>

// SEN55 实例
SensirionI2CSen5x sen5x;

void setup() {
  // 串口调试
  Serial.begin(115200);


  // 初始化屏幕
  M5.begin();
  M5.Display.clear(TFT_BLACK);
  M5.Display.setTextSize(1);
  M5.Display.setTextColor(TFT_WHITE, TFT_BLACK);

  // I2C 引脚 (SDA=11, SCL=12)，与之前能读到数据的配置保持一致
  Wire.begin(11, 12);
  // AirQ 外部传感器使能脚，保持低电平
  pinMode(10, OUTPUT);
  digitalWrite(10, LOW);

  // 初始化 SEN55
  sen5x.begin(Wire);
  uint16_t err;
  char msg[128];

  err = sen5x.deviceReset();
  if (err) {
    errorToString(err, msg, sizeof(msg));
    Serial.println("SEN55 reset failed: " + String(msg));
  }
  // 启动测量
  err = sen5x.startMeasurement();
  if (err) {
    errorToString(err, msg, sizeof(msg));
    Serial.println("Failed to start SEN55 measurement: " + String(msg));
  }
}

void loop() {
  // 每 1s 读取一次
  delay(1000);

  float pm1, pm2_5, pm4, pm10, hum, temp, voc, nox;
  uint16_t err = sen5x.readMeasuredValues(
    pm1, pm2_5, pm4, pm10,
    hum, temp,
    voc, nox
  );

  // 清屏并重置光标
  M5.Display.fillScreen(TFT_BLACK);
  M5.Display.setCursor( 10, 10);

  if (err) {
    // 读取出错
    M5.Display.setTextColor(TFT_RED, TFT_BLACK);
    char em[64];
    errorToString(err, em, sizeof(em));
    M5.Display.printf("Read Error:\n%s", em);
  } else {
    // 正常显示各项数值
    M5.Display.setTextColor(TFT_WHITE, TFT_BLACK);
    M5.Display.printf("PM1.0 : %.1f ug/m3\n",   pm1);
    M5.Display.printf("PM2.5 : %.1f ug/m3\n",   pm2_5);
    M5.Display.printf("PM4.0 : %.1f ug/m3\n",   pm4);
    M5.Display.printf("PM10  : %.1f ug/m3\n\n", pm10);
    M5.Display.printf("Hum   : %.1f %%\n",      hum);
    M5.Display.printf("Temp  : %.1f C\n\n",     temp);
    M5.Display.printf("VOC   : %.1f\n",        voc);
    M5.Display.printf("NOx   : %.1f\n",        nox);
  }
  // 更新 M5 事件（必要）
  M5.update();
}