Draft for subscription to all gpio

WifiControlSensor/MQTT.ino

@@ -4,47 +4,39 @@ Adafruit_MQTT_Client *mqtt;
 Adafruit_MQTT_Publish *mqtt_temp;
 Adafruit_MQTT_Publish *mqtt_pressure;
 
-Adafruit_MQTT_Subscribe *pumpButton;
+#define NB_ELEMENTS(x) (sizeof(x)/ sizeof(x[0]))
 
 const char TEMPERATURE_FEED[] = "/feeds/temperature";
 const char PRESSURE_FEED[] = "/feeds/pressure";
 
+// Should have less that MAXSUBSCRIPTIONS elements
+// MAXSUBSCRIPTIONS is defined is Adafruit_mqtt.h
+const int gpioWatched[] = {2};
+
+#define GPIO_BASE "/feeds/gpio/"
+const char *GPIO_FEED[] = { GPIO_BASE"2"};
+const char *GPIO_SET_FEED[] = { GPIO_BASE"2/set"};
+
+Adafruit_MQTT_Publish * mqttGpio[MAXSUBSCRIPTIONS] = {};
+
 const char PUMP_CMD[] = "/feeds/pump/set";
 
 boolean mqttIsConfigured = false;
 
-int publishMQTT(double temp, double pressure) {
-  if (MQTT_connect() == 0) {
-    Serial.println("publishing !");
-    mqtt_temp->publish(temp);
-    mqtt_pressure->publish(pressure);
-  }
-  return 0;
-}
-
-char *mqttGetSubData() {
-  return (char *)pumpButton->lastread;
-}
-
-Adafruit_MQTT_Subscribe *subscription;
-bool mqttSubAvailable() {
-  if (MQTT_connect() == 0) {
-    subscription = mqtt->readSubscription(0);
-    if (subscription == pumpButton) {
-      return true;
-    }
-  }
-  return false;
-}
 
 int setupMQTT(char *server, char *user, char *passwd, int port) {
   // Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
   mqtt = new Adafruit_MQTT_Client(&client, server, port, user, passwd);
   mqtt_temp =  new Adafruit_MQTT_Publish(mqtt, TEMPERATURE_FEED);
   mqtt_pressure =  new Adafruit_MQTT_Publish(mqtt, PRESSURE_FEED);
-  pumpButton = new Adafruit_MQTT_Subscribe(mqtt, PUMP_CMD);
+  for (int i = 0 ; i < NB_ELEMENTS(gpioWatched); i++) {
+    Adafruit_MQTT_Subscribe *gpioSet = new Adafruit_MQTT_Subscribe(mqtt, GPIO_SET_FEED[i]);
+    mqtt->subscribe(gpioSet);
+
+    Adafruit_MQTT_Publish *gpio =  new Adafruit_MQTT_Publish(mqtt, GPIO_FEED[i]);
+    mqttGpio[i] = gpio;
+  }
 
-  mqtt->subscribe(pumpButton);
   return 0;
 }
 
@@ -75,3 +67,56 @@ int MQTT_connect() {
   }
   return 0;
 }
+
+int publishMQTT(double temp, double pressure) {
+  if (MQTT_connect() == 0) {
+    Serial.println("publishing !");
+    mqtt_temp->publish(temp);
+    mqtt_pressure->publish(pressure);
+  }
+  return 0;
+}
+
+int getGpioFromSubscription(Adafruit_MQTT_Subscribe *subscription) {
+  if(!strstr(subscription->topic, GPIO_BASE))
+    return -1;
+  String gpioStr(subscription->topic+strlen(GPIO_BASE));
+  int idx = gpioStr.indexOf("/");
+  int gpio = gpioStr.substring(idx).toInt();
+  
+  if(gpio >= 0 && gpio < 32 )
+    return gpio;
+  else
+    return -1;
+}
+
+bool isGpioWatched(int gpio) {
+  return false;
+}
+
+void checkMqttSubscription() {
+  if (MQTT_connect() == 0) {
+    Adafruit_MQTT_Subscribe *subscription;
+    while (subscription = mqtt->readSubscription(0)) {
+      int gpio = getGpioFromSubscription(subscription);
+      if (gpio > 0 && isGpioWatched(gpio)) {
+        char *value = (char *) subscription->lastread;
+      }
+    }
+  }
+}
+
+//char *mqttGetSubData() {
+//  return (char *)pumpButton->lastread;
+//}
+//
+//Adafruit_MQTT_Subscribe *subscription;
+//bool mqttSubAvailable() {
+//  if (MQTT_connect() == 0) {
+//    subscription = mqtt->readSubscription(0);
+//    if (subscription == pumpButton) {
+//      return true;
+//    }
+//  }
+//  return false;
+//}

WifiControlSensor/WifiControlSensor.ino

@@ -211,10 +211,10 @@ void loop() {
     ArduinoOTA.handle();
   } else {
     server.handleClient();
-    if(mqttSubAvailable()){
-      Serial.println("Mqtt sub available: ");
-      Serial.println(mqttGetSubData());
-    }
+//    if(mqttSubAvailable()){
+//      Serial.println("Mqtt sub available: ");
+//      Serial.println(mqttGetSubData());
+//    }
     delay(WEB_DELAY_MS);
 
     nbCycle++;