Question

我正在使用ESP32 HiGrow Plant传感器板。

我稍微触摸了此固件：https://github.com/lucafabbri/HiGrow-Mongoose-OS-Firmware/blob/master/fs/init.js

要使其通过MQTT而不是HTTP发布传感器数据。

我正在使用自己的蚊子实例。

有了这些更改，我可以每5秒成功发布一次：

if (deviceId !== "" && connected) {
    GPIO.write(statusLightPin, 0);
    let higrowData = {'DeviceId': deviceId, 'Temperature': t, 'Humidity': h, 'Moisture': m};

    let higrowData = JSON.stringify({
      DeviceId: deviceId,
      Temperature: t,
      Humidity: h,
      Moisture: m
    });

    let topic = 'devices/' + Cfg.get('device.id') + '/events';

    let ok = MQTT.pub(topic, higrowData, 1);
    print('Published:', ok, topic, '->', higrowData);

    GPIO.write(statusLightPin, 1);
} else {
    print("DeviceId:",deviceId,"Connected:",connected);
    GPIO.write(statusLightPin, 1);
}

但是，在成功发布后，我尝试进入deepSleep时，设备便进入睡眠状态，但未发布...

if (deviceId !== "" && connected) {
    GPIO.write(statusLightPin, 0);
    let higrowData = {'DeviceId': deviceId, 'Temperature': t, 'Humidity': h, 'Moisture': m};

    let higrowData = JSON.stringify({
      DeviceId: deviceId,
      Temperature: t,
      Humidity: h,
      Moisture: m
    });

    let topic = 'devices/' + Cfg.get('device.id') + '/events';

    let ok = MQTT.pub(topic, higrowData, 1);
    print('Published:', ok, topic, '->', higrowData);

    if (ok) {
      print('Success! Going to sleep');
      ESP32.deepSleep(15000000); // 15 seconds 
    } else { 
      print('MQTT error');
    }

    GPIO.write(statusLightPin, 1);

} else {

    print("DeviceId:",deviceId,"Connected:",connected);
    GPIO.write(statusLightPin, 1);
}

Answer 1

  let ok = 1;
  MQTT.setEventHandler(function(conn, ev ,edata) {
    print ('MQTT event handler: connect', ev);
    if (ev === 0) {
    ok = MQTT.pub(topic, higrowData, 1);
    print('Published:', ok, topic, '->', higrowData);
    } else { 
      print('error');
    }
  }, null);
  MQTT.setEventHandler(function(conn, ev ,edata) {
    print ('MQTT event handler: write', ev);
    if (ev === 204) {
      print('Success! Going to sleep');
      ESP32.deepSleep(120000000); // 120 seconds
    }  
  }, null);

Answer 2

遇到同样的问题。 MQTT调用必须是异步的，因此深度睡眠会在完成之前将其切断。

在使设备进入深度睡眠之前，我们可以使用事件处理程序从MQTT代理获取对发布的确认。我依靠QOS设置为1来接收确认。这与Dirks回答的概念相同

这是我想出的。完整的项目可在此处找到：https://gitlab.com/PseudoNet/higrow-sensor

...
let isConnected = false;
let hasPublished = false;
let qos = 1;//Must be set to 1  

function publishData() {

  let higrowdata = { deviceId: Cfg.get('higrow.id'), temperature: dht.getTemp(), humidity: dht.getHumidity(), water: ADC.read(SOILpin) };
  Log.print(Log.INFO, JSON.stringify(higrowdata));

  if (MQTT.pub('higrow/' + higrowdata.deviceId + '/temperature', JSON.stringify(higrowdata.temperature), qos)
    && MQTT.pub('higrow/' + higrowdata.deviceId + '/humidity', JSON.stringify(higrowdata.humidity), qos)
    && MQTT.pub('higrow/' + higrowdata.deviceId + '/water', JSON.stringify(higrowdata.water), qos)) {
    Log.print(Log.INFO, 'Payload sent');
    hasPublished = true;
  }
}


//Wait for mqtt server connection
Timer.set(10000, Timer.REPEAT, function () {
  if (isConnected) {
    Log.print(Log.DEBUG, 'Poll Connected');
    publishData();
  } else {
    Log.print(Log.DEBUG, 'No connecion...waiting');
  }
}, null
);

MQTT.setEventHandler(function (conn, ev) {
  if (ev !== 0) {
    let evs = '?';
    if (ev === MQTT.EV_CONNACK) {
      evs = 'CONNACK';   // Connection to broker has been established
    } else if (ev === MQTT.EV_PUBLISH) {
      evs = 'PUBLISH';   // msg published to topics we are subscribed to
    } else if (ev === MQTT.EV_PUBACK) {
      evs = 'PUBACK';    // ACK for publishing of a message with QoS&amp;gt;0
    } else if (ev === MQTT.EV_SUBACK) {
      evs = 'SUBACK';    // ACK for a subscribe request
    } else if (ev === MQTT.EV_UNSUBACK) {
      evs = 'UNSUBACK';  // ACK for an unsubscribe request
    } else if (ev === MQTT.EV_CLOSE) {
      evs = 'CLOSE';     // connection to broker was closed
    }
    Log.print(Log.DEBUG, 'MQTT event:' + evs);
    if (ev === MQTT.EV_CONNACK) {
      Log.print(Log.DEBUG, 'MQTT Connected');
      isConnected = true;
      publishData();
    } else if (ev === MQTT.EV_PUBACK) {
      if (hasPublished) {
        Log.print(Log.INFO, 'MQTT publish confirmed... init deep sleep');
        ESP32.deepSleep(Cfg.get('higrow.interval_min')*60000000);
      }
    }
  }
}, null);

在DeepSleep之后，Mongoose似乎没有发布

2 个答案: