Add arduino code for soil moisture

soil_moisture.ino

+const int AirValue = 683;   //you need to replace this value with Value_1
+const int WaterValue = 260;  //you need to replace this value with Value_2
+int soilMoistureValue = 0;
+int soilmoisturepercent=0;
+void setup() {
+  Serial.begin(9600); // open serial port, set the baud rate to 9600 bps
+}
+void loop() {
+soilMoistureValue = analogRead(A0);  //put Sensor insert into soil
+//Serial.println(soilMoistureValue);
+soilmoisturepercent = map(soilMoistureValue, AirValue, WaterValue, 0, 100);
+if(soilmoisturepercent >= 100)
+{
+  Serial.println("100 %");
+}
+else if(soilmoisturepercent <=0)
+{
+  Serial.println("0 %");
+}
+else if(soilmoisturepercent >0 && soilmoisturepercent < 100)
+{
+  Serial.print(soilmoisturepercent);
+  Serial.println("%");
+  
+}
+  delay(250);
+}