NodeMcu.ino

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+#include <ESP8266WiFi.h>
+
+//variables
+int water_level = 0;
+int photo_level = 0;
+
+//Constants
+int sleepTime = 1000;
+const char* ssid = "TristonArm_2.4G";
+const char* password = "Thanchanok1205";
+
+WiFiClient client;
+
+//LED pins
+int ledRed = D0;
+int ledYellow = D1;
+int ledGreen = D2;
+
+//power out pins
+int photo_resistor_input = D8;
+int photo_resister_pin = D4;
+
+//input pins
+int respin = A0;
+
+void setup() {
+  // set serial data rate
+  Serial.begin(9600);
+  while (!Serial) {}
+
+  // set pinmodes so the boards knows where to direct power
+  pinMode(LED_BUILTIN, OUTPUT);
+  pinMode(ledRed, OUTPUT);
+  pinMode(ledYellow, OUTPUT);
+  pinMode(ledGreen, OUTPUT);
+  pinMode(photo_resistor_input, INPUT);
+  pinMode(photo_resister_pin, OUTPUT);
+
+  // Maker sure no power is going out on start
+  digitalWrite(photo_resister_pin, LOW);
+  digitalWrite(ledGreen, LOW);
+  digitalWrite(ledYellow, LOW);
+  digitalWrite(ledRed, LOW);
+
+  // Just printing the start
+  Serial.println("Started");
+
+  // WIFI logic
+  Serial.println();
+  Serial.print("Wifi connecting to ");
+  Serial.println( ssid );
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  Serial.println();
+  Serial.print("Connecting");
+  while (WiFi.status() != WL_CONNECTED) {
+    digitalWrite(LED_BUILTIN, HIGH);
+    delay(250);
+    Serial.print(".");
+    digitalWrite(LED_BUILTIN, LOW);
+    delay(250);
+  }
+  Serial.println();
+  Serial.println("Wifi Connected Success!");
+  Serial.print("NodeMCU IP Address : ");
+  Serial.println(WiFi.localIP());
+  Serial.println();
+}
+
+void loop() {
+  // read and modify the incoming data
+    doWaterSensor();
+    doPhotoSensor();
+}
+
+
+
+void doPhotoSensor() {
+  digitalWrite(photo_resister_pin, HIGH);
+
+  photo_level = analogRead(photo_resistor_input);
+
+  Serial.println();
+  char string[] = "sunlight_status: ";
+  char* final_message = string;
+  char snum[4];
+  Serial.println(strcat(final_message, itoa(photo_level, snum, 10)));
+
+  //Send message through client
+  Serial.println("Sending client message");
+  if (client.connect("192.168.1.103", 5825)) {
+    Serial.println("Connected to TCP server");
+    client.write(final_message);
+  } else {
+    Serial.println("Failed to connect to TCP server");
+  }
+  return;
+
+  digitalWrite(photo_resister_pin, LOW);
+}
+
+
+
+void doWaterSensor() {
+  water_level = analogRead(respin);
+  water_level = water_level - 300;
+  char *water_status = "";
+
+  if (water_level <= 0) {
+    water_status = "Empty";
+    digitalWrite(ledRed, HIGH);
+  } else {
+    if (water_level <= 250) {
+      water_status = "Low";
+      digitalWrite(ledYellow, HIGH);
+    }
+    if (water_level > 250 && water_level <= 300) {
+      water_status = "Medium";
+      digitalWrite(ledYellow, HIGH);
+      digitalWrite(ledGreen, HIGH);
+    }
+    if (water_level > 300) {
+      water_status = "High";
+      digitalWrite(ledGreen, HIGH);
+    }
+  }
+  sendWaterStatus(water_status);
+  sendWaterLevel(water_level);
+  clearLEDS();
+}
+
+
+
+
+
+
+void clearLEDS() {
+  delay(sleepTime); //To maintain light on
+  digitalWrite(ledRed, LOW);
+  digitalWrite(ledYellow, LOW);
+  digitalWrite(ledGreen, LOW);
+  delay(sleepTime); //To maintain light off
+}
+
+
+
+
+
+
+/** SEND WATER LEVEL BY CONNECTING TO THE TCP SERVER AT PORT 192.168.1.103 **/
+void sendWaterLevel(int level) {
+  Serial.println();
+  char string[] = "water_level: ";
+  char snum[3];
+  char* final_message = string;
+  Serial.println(strcat(final_message, itoa(level, snum, 10)));
+
+  //Send message through client
+  Serial.println("Sending client message");
+  if (client.connect("192.168.1.103", 5825)) {
+    Serial.println("Connected to TCP server");
+    client.write(final_message);
+  } else {
+    Serial.println("Failed to connect to TCP server");
+  }
+  return;
+}
+
+
+
+
+
+
+/** SEND WATER STATUS BY CONNECTING TO THE TCP SERVER AT PORT 192.168.1.103 **/
+void sendWaterStatus(char* message) {
+  Serial.println();
+  char string[] = "water_status: ";
+  char* final_message = string;
+  Serial.println(strcat(final_message, message));
+
+  //Send message through client
+  Serial.println("Sending client message");
+  if (client.connect("192.168.1.103", 5825)) {
+    Serial.println("Connected to TCP server");
+    client.write(final_message);
+  } else {
+    Serial.println("Failed to connect to TCP server");
+  }
+  return;
+}