Added MQTT and made sample_time configurable.

fs/init.js

@@ -9,6 +9,7 @@ load('api_esp32.js');
 load('api_dht.js');
 load('api_adc.js');
 load('api_rpc.js');
+load('api_mqtt.js');
 
 // Pins
 let resetPin = 0;
@@ -33,10 +34,11 @@ GPIO.set_int_handler(resetPin, GPIO.INT_EDGE_NEG, function(resetPin) {
   
   // enable bluetooth
   Cfg.set({bt:{enable:true}});
-  // disable and clear wifi-config
+  // disable wifi
-  Cfg.set({wifi:{sta:{enable:false}}});
+  Cfg.set({wifi:{sta:{enable:true}}});
-  Cfg.set({wifi:{ap:{enable:false}}});
+  Cfg.set({wifi:{ap:{enable:true}}});
-  Cfg.set({wifi:{sta:{ssid:'',pass:''}}});
+  // clear wifi-config
+  // Cfg.set({wifi:{sta:{ssid:'',pass:''}}});
 
   Sys.reboot(1000);
 }, null);
@@ -53,22 +55,33 @@ if (deviceId === "")
   deviceId = Cfg.get("higrow.deviceId");
   Cfg.set("device.id", deviceId);
 }
+let mqttTopic = deviceId + '/sample';
+let mqttPowerOnTopic = deviceId + '/poweron';
+let sendMqtt = Cfg.get("higrow.send_mqtt");
+let sendHttp = Cfg.get("higrow.send_http");
+let sendHttpUrl = Cfg.get("higrow.send_http_url");
 
-let connected = false;
+print("HTTP: ", sendHttp, "URL:", sendHttpUrl);
-let readSensors = Timer.set(5000, Timer.REPEAT, function() {
+print("MQTT:", sendMqtt, "Topic:", mqttTopic, "PowerOn Topic:", mqttPowerOnTopic);
+let netConnected = false;
+let mqttConnected = false;
+let sampleTime_ms = Cfg.get("higrow.sample_time") * 1000;
+
+let readSensors = Timer.set(sampleTime_ms, Timer.REPEAT, function() {
   let t = dht.getTemp();
   let h = dht.getHumidity();
   let m = ADC.read(moisturePin);
 
-  print("DeviceId:",deviceId,"Temperature:",t,"Humidity:",h,"Moisture:",m);
+  print("DeviceId:", deviceId, "Temperature:", t, "Humidity:", h, "Moisture:", m);
   
-  if (deviceId !== "" && connected)
+  if (deviceId !== "" && netConnected)
   {
     GPIO.write(statusLightPin, 0);
     let jsonData = {'DeviceId': deviceId, 'Temperature': t, 'Humidity': h, 'Moisture': m};
+    if (sendHttp) {
       HTTP.query({
         headers: {'Content-Type' : 'application/json'},
-      url: 'http://httpbin.org/post',  // replace with your own endpoint
+        url: sendHttpUrl,
         data: jsonData,
         success: function(body, full_http_msg) 
         { 
@@ -82,13 +95,21 @@ let readSensors = Timer.set(5000, Timer.REPEAT, function() {
           //ESP32.deepSleep(30000000); // 30 seconds
         },
       });
+      print("Sent HTTP message: ", jsonData);
+    }
+
+    if (sendMqtt && mqttConnected) {
+      let jsonDataString = JSON.stringify(jsonData);
+      print("Try to send MQTT message: ", jsonDataString, "To:", mqttTopic);
+      MQTT.pub(mqttTopic,  jsonDataString, 1, true);
+    }
 
     GPIO.write(statusLightPin, 1);
     //Timer.del(readSensors);
   }
   else
   {
-    print("DeviceId:",deviceId,"Connected:",connected);
+    print("DeviceId:", deviceId, "Net-Con:", netConnected, "MQTT-Con:", mqttConnected);
     GPIO.write(statusLightPin, 1);
   }
 
@@ -130,21 +151,48 @@ RPC.addHandler('HG.StatusLED.Off', function(args){
 
 // Monitor network connectivity.
 Event.addGroupHandler(Net.EVENT_GRP, function(ev, evdata, arg) {
-  let status = true && connected;
+  let status = true && netConnected;
   let evs = '???';
   if (ev === Net.STATUS_DISCONNECTED) {
     evs = 'DISCONNECTED';
-    connected = false;
+    netConnected = false;
   } else if (ev === Net.STATUS_CONNECTING) {
     evs = 'CONNECTING';
-    connected = false;
+    netConnected = false;
   } else if (ev === Net.STATUS_CONNECTED) {
     evs = 'CONNECTED';
-    connected = false;
+    netConnected = false;
   } else if (ev === Net.STATUS_GOT_IP) {
     evs = 'GOT_IP';
-    connected = true;
+    netConnected = true;
   }
   
   print(evs);
 }, null);
+
+let publishedMessageCount = 0;
+let subscribedMessageCount = 0;
+
+// Monitor MQTT connectivity.
+MQTT.setEventHandler(function(conn, ev, evdata) {
+  let mqttStatus = '???';
+
+  if (ev === MQTT.EV_CONNACK) {
+    mqttStatus = 'CONNECTED';
+    if (!mqttConnected) {
+      MQTT.pub(mqttPowerOnTopic,  "HiGrow sensor booted", 1, true);
+    }
+    mqttConnected = true;
+  } else if (ev === MQTT.EV_PUBLISH) {
+    subscribedMessageCount++;
+  } else if (ev === MQTT.EV_PUBACK) {
+    publishedMessageCount++;
+  } else if (ev === MQTT.EV_CLOSE) {
+    mqttStatus = 'DISCONNECTED';
+    netConnected = false;
+  }
+  
+  if (mqttStatus !== '???') {
+    print("MQTT-Status:", mqttStatus, "Msg-Sub:", subscribedMessageCount, "Msg-Pub:", publishedMessageCount);
+  }
+}, null);

mos.yml

@@ -8,6 +8,8 @@ libs_version: ${mos.version}
 modules_version: ${mos.version}
 mongoose_os_version: ${mos.version}
 
+platform: esp32
+
 config_schema:
   - ["higrow", "o", {title: "LilyGo HiGrow ESP32 Plant Sensor v1 App Settings"}]
   - ["higrow.deviceId", "s", "", {title: "DeviceId"}]
@@ -21,6 +23,11 @@ config_schema:
   - ["wifi.ap.enable", false]
   - ["device.id", "HiGrow_??????"]
   - ["bt.dev_name", "HiGrowBT_??????"]
+  - ["mqtt.enable", true]
+  - ["higrow.send_mqtt", "b", true, {title: "Send data using MQTT"}]
+  - ["higrow.send_http", "b", false, {title: "Send data using HTTP"}]
+  - ["higrow.send_http_url", "s", "http://example.org/what/ever", {title: "Send data using HTTP"}]
+  - ["higrow.sample_time", "i", 10, {title: "Take a sample after that amount of seconds"}]
 
 filesystem:
   - fs
@@ -31,10 +38,12 @@ libs:
   - origin: https://github.com/mongoose-os-libs/rpc-service-config
   - origin: https://github.com/mongoose-os-libs/rpc-service-fs
   - origin: https://github.com/mongoose-os-libs/rpc-uart
+  - origin: https://github.com/mongoose-os-libs/rpc-mqtt
   - origin: https://github.com/mongoose-os-libs/wifi
   - origin: https://github.com/mongoose-os-libs/dht
   - origin: https://github.com/mongoose-os-libs/mjs
   - origin: https://github.com/mongoose-os-libs/adc
+  - origin: https://github.com/mongoose-os-libs/mqtt
 
 tags:
   - js