heartbeat added

libraries/includes/defines.h

@@ -11,6 +11,8 @@
 // #define DEBUG
 
 
+#define VALUES_BUF_SIZE 128
+#define HEARTBEAT_BUF_SIZE 256
 
 
 #define NODEMCU

releaseInfo.json

@@ -1,8 +1,8 @@
 {
-    "releaseTag": "v1.0.0",
+    "releaseTag": "v1.0.1",
     "createReleaseTag": "true",
-    "releaseName": "initial",
-    "description": "initial"
+    "releaseName": "heartbeat",
+    "description": "heartbeat message added"
   }
   
   

sketch/ConfigDataStructure.py

@@ -10,11 +10,13 @@ configItems = [
     {"label":"MQTT Port", "key":"mqttPort", "type":"I", "default":1883},
     {"label":"MQTT ValuesTopic", "key":"mqttValuesTopic", "type":"C", "length":64, "default":"IoT/RainSensor2/Values"},
     {"label":"MQTT DebugTopic", "key":"mqttDebugTopic", "type":"C", "length":64, "default":"IoT/RainSensor2/Debug"},
+    {"label":"MQTT HeartbeatTopic", "key":"mqttHeartbeatTopic", "type":"C", "length":64, "default":"IoT/RainSensor2/Heartbeat"},
     {"label":"MQTT WatchdogTopic", "key":"mqttWatchdogTopic", "type":"C", "length":64, "default":"IoT/Watchdog"},
     {"label":"Values period (s)", "key":"valuesPeriod", "type":"I", "default":3600},
+    {"label":"Heartbeat period (s)", "key":"heartbeatPeriod", "type":"I", "default":5},
     {"label":"Debounce time (us)", "key":"debounce", "type":"I", "default":300},
     {"label":"DebugMode", "key":"debugMode", "type":"I", "default":0}
 ]
 
-magic = 3235774471
+magic = 3235774472
 appName = "ESP8266 based RainSensor/Counter"

sketch/application.cpp

@@ -67,9 +67,11 @@ void loopApplication() {
 	}
 
 	static uint32_t totalCnt = 0;
-	static uint32_t lastMillis = 0;
-	if (currentMillis > (lastMillis + (configBlock.valuesPeriod * 1000))) {
-		lastMillis = currentMillis;
+	static uint32_t lastValuesMillis = 0;
+	static uint32_t lastHeartbeatMillis = 0;
+	char buf[VALUES_BUF_SIZE];
+	if (currentMillis > (lastValuesMillis + (configBlock.valuesPeriod * 1000))) {
+		lastValuesMillis = currentMillis;
 
 		// rain sensor
 		uint32_t rainCnt = 0;
@@ -84,12 +86,25 @@ void loopApplication() {
 		totalCnt += rainCnt;
 
 	    // MQTT publishing
-#define BUF_SIZE 256
-		char buf[BUF_SIZE];
-		snprintf(buf, BUF_SIZE-1, "{\"raincnt\":%ld, \"totalCnt\":%ld, \"uptime\":%ld}", rainCnt, totalCnt, uptime);
+		memset(buf, 0, VALUES_BUF_SIZE);
+		snprintf(buf, VALUES_BUF_SIZE-1, "{\"raincnt\":%ld, \"totalCnt\":%ld, \"uptime\":%ld}", rainCnt, totalCnt, uptime);
 		mqttClient.publish(configBlock.mqttValuesTopic, buf);
 	}
 
+	if (currentMillis > (lastHeartbeatMillis + (configBlock.heartbeatPeriod * 1000))) {
+		lastHeartbeatMillis = currentMillis;
+
+#ifdef DEBUG
+		Serial.println("Publishing heartbeat");
+#endif
+
+	    // MQTT publishing
+		char heartbeatBuf[HEARTBEAT_BUF_SIZE];
+		memset(heartbeatBuf, 0, HEARTBEAT_BUF_SIZE);
+		snprintf(heartbeatBuf, HEARTBEAT_BUF_SIZE-1, "{\"lastMessage\":%s, \"uptime\":%ld}", buf, uptime);
+		mqttClient.publish(configBlock.mqttHeartbeatTopic, heartbeatBuf);
+	}
+
 }