controller code

README.md

@@ -0,0 +1,2 @@
+# Controllo Canale Irriguo
+

platformio.ini

@@ -8,7 +8,10 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:uno]
-platform = atmelavr
-board = uno
+[env:nodemcuv2]
+platform = espressif8266
+board = nodemcuv2
 framework = arduino
+upload_protocol = esptool
+lib_deps = 
+    knolleary/PubSubClient@^2.8

src/main.cpp

@@ -1,9 +1,227 @@
 #include <Arduino.h>
+#include <ESP8266WiFi.h>
+#include <ESP8266WebServer.h>
+#include <PubSubClient.h>
+
+#define WLAN_SSID       "TP-LINK-RPT0"
+#define WLAN_PASS       "6JM54UG4EY"
+
+#define MQTT_CLID       "ValveControl"
+#define MQTT_HOST       "192.168.1.133"
+#define MQTT_PORT       1883
+#define MQTT_USER       "admin"
+#define MQTT_PASS       "22pa0799"
+
+void openValve();
+void closeValve();
+void stopValve(); 
+
+void OnConnect();
+void OnOpen();
+void OnClose();
+void OnRestart();
+void OnNotFound();
+
+String SendHTML(uint8_t ValveOpen);
+
+bool ValveOpen = false;
+
+int ButtonOpen = 14;
+int ButtonClose = 12;
+
+int MotorPin1 = 0;
+int MotorPin2 = 2;
+int duration = 10000;
+
+ESP8266WebServer server(80);
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+  
+void setup_wifi() {
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(WLAN_SSID);
+  WiFi.begin(WLAN_SSID, WLAN_PASS);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println();
+  Serial.println("WiFi connected");
+  Serial.println("IP address: "); 
+  Serial.println(WiFi.localIP());
+}
+
+void onMessage(char* topic, byte* payload, unsigned int length) {
+  Serial.print("Message arrived on topic ");
+  Serial.print(topic);
+  Serial.print(": ");
+  for (unsigned int i=0; i < length; i++) {
+    Serial.print((char)payload[i]);
+  }
+  Serial.println();
+  const char * command = (char *)payload;
+  if (!strncmp(command, "open", length)) {
+    openValve();
+  } else if (!strncmp(command, "close", length)) {
+    closeValve();
+  } else {
+    Serial.println("Unnown command");
+  }
+}
+
+void reconnect() {
+  while (!client.connected()) {
+    Serial.println("Attempting MQTT connection...");
+    if (client.connect(MQTT_CLID, MQTT_USER, MQTT_PASS)) {
+      Serial.println("MQTT connected");
+      client.subscribe("/valve/command");
+    } else {
+      Serial.print("Connection failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" try again in 5 seconds");
+      delay(5000);
+    }
+  }
+}
+
+void setup_mqtt() {
+  client.setServer(MQTT_HOST, MQTT_PORT);
+  client.setCallback(onMessage);
+}
+
+void setup_http() {
+  Serial.println("Starting HTTP server...");
+  server.on("/", OnConnect);
+  server.on("/open", OnOpen);
+  server.on("/close", OnClose);
+  server.on("/restart", OnRestart);
+  server.onNotFound(OnNotFound);
+  server.begin();
+  Serial.println("HTTP server started");
+}
 
 void setup() {
-  // put your setup code here, to run once:
+
+  Serial.begin(115200);
+  while(!Serial) { 
+    delay(100); 
+  }
+
+  pinMode(ButtonOpen, INPUT);
+  pinMode(ButtonClose, INPUT);
+  
+  pinMode(MotorPin1, OUTPUT);
+  pinMode(MotorPin2, OUTPUT);
+  
+  setup_wifi();
+  setup_mqtt();
+  setup_http();
+  
 }
 
 void loop() {
-  // put your main code here, to run repeatedly:
-}
+
+  if (!client.connected()) {
+    reconnect();
+  }
+  client.loop();
+  
+  server.handleClient();
+  
+  int buttonOpenState = digitalRead(ButtonOpen);
+  int buttonCloseState = digitalRead(ButtonClose);
+  
+  if(buttonOpenState == LOW) {
+    buttonCloseState = !buttonOpenState;
+    digitalWrite(MotorPin1, LOW);
+    digitalWrite(MotorPin2, HIGH);
+    ValveOpen = true;
+  }
+  
+  if(buttonCloseState == LOW) {
+    buttonOpenState = !buttonCloseState;
+    digitalWrite(MotorPin1, HIGH);
+    digitalWrite(MotorPin2, LOW);
+    ValveOpen = false;
+  }
+  
+  if(buttonOpenState == HIGH && buttonCloseState == HIGH) {
+    stopValve();
+  }
+  
+}
+
+void OnConnect() {
+  server.send(200, "text/html", SendHTML(ValveOpen)); 
+}
+
+void OnOpen() {
+  openValve();
+  server.send(200, "text/html", SendHTML(ValveOpen)); 
+}
+
+void OnClose() {
+  closeValve();
+  server.send(200, "text/html", SendHTML(ValveOpen)); 
+}
+
+void OnRestart() {
+  server.send(200, "text/plain","Restarting...");
+  delay(1000);
+  ESP.restart();
+}
+
+void OnNotFound(){
+  server.send(404, "text/plain", "Not found");
+}
+
+void openValve() {
+  Serial.println("Opening valve...");
+  digitalWrite(MotorPin1, LOW);
+  digitalWrite(MotorPin2, HIGH);
+  delay(duration);
+  stopValve();
+  ValveOpen = HIGH;
+}
+
+void closeValve() {
+  Serial.println("Closing valve...");
+  digitalWrite(MotorPin1, HIGH);
+  digitalWrite(MotorPin2, LOW);
+  delay(duration);
+  stopValve();
+  ValveOpen = false;
+}
+
+void stopValve() {
+  digitalWrite(MotorPin1, LOW);
+  digitalWrite(MotorPin2, LOW);
+}
+
+String SendHTML(uint8_t ValveOpen) {
+  String ptr = "<!DOCTYPE html> <html>\n";
+  ptr +="<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\">\n";
+  ptr +="<title>Linear Actuator</title>\n";
+  ptr +="<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n";
+  ptr +="body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;} h3 {color: #444444;margin-bottom: 50px;}\n";
+  ptr +=".button {display: block;width: 80px;background-color: #1abc9c;border: none;color: white;padding: 13px 30px;text-decoration: none;font-size: 25px;margin: 0px auto 35px;cursor: pointer;border-radius: 4px;}\n";
+  ptr +=".button-open {background-color: #1abc9c;}\n";
+  ptr +=".button-open:active {background-color: #16a085;}\n";
+  ptr +=".button-close {background-color: #34495e;}\n";
+  ptr +=".button-close:active {background-color: #2c3e50;}\n";
+  ptr +="p {font-size: 14px;color: #888;margin-bottom: 10px;}\n";
+  ptr +="</style>\n";
+  ptr +="</head>\n";
+  ptr +="<body>\n";
+  ptr +="<h1>Linear Actuator</h1>\n";
+  if(ValveOpen) {
+    ptr +="<p>Valve is OPEN</p><a class=\"button button-close\" href=\"/close\">CLOSE</a>\n";
+  } else {
+    ptr +="<p>Valve is CLOSED</p><a class=\"button button-open\" href=\"/open\">OPEN</a>\n";
+  }
+  ptr +="</body>\n";
+  ptr +="</html>\n";
+  return ptr;
+}