Merge pull request #1 from MecaHumArduino/wifi

Wifi

Author: isbkch

.gitignore

@@ -2,4 +2,4 @@
 .vscode/.browse.c_cpp.db*
 .vscode/c_cpp_properties.json
 .vscode/launch.json
-.vscode/ipch
+.vscode/ipch

platformio.ini

@@ -14,3 +14,4 @@ board          = uno
 framework      = arduino
 lib_extra_dirs = ~/Documents/Arduino/libraries
 monitor_speed  = 9600
+serial_port    = /dev/cu.usbserial-A50285BI

src/main.ino

@@ -1,14 +1,21 @@
 #include <dht11.h>
 #include <LiquidCrystal.h>
+#include <SoftwareSerial.h>
 
-#define DHT11PIN 3
+#define DEBUG true
+#define DHT11PIN 4
 dht11 sensor;
 
 // initialize the library with the numbers of the interface pins
 LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
 
+// ESP TX => Uno Pin 2
+// ESP RX => Uno Pin 3
+SoftwareSerial wifi(2, 3);
+
 void setup() {
   Serial.begin(9600);
+  wifi.begin(9600);
 
   // set up the LCD's number of columns and rows
   lcd.begin(16, 2);
@@ -29,26 +36,70 @@ void setup() {
 
 void loop() {
 
+  Serial.print("buffer: ");
+  if (wifi.available()) {
+    String espBuf;
+    long int time = millis();
+
+    while( (time+1000) > millis()) {
+      while (wifi.available()) {
+        // The esp has data so display its output to the serial window
+        char c = wifi.read(); // read the next character.
+        espBuf += c;
+      }
+    }
+    Serial.print(espBuf);
+  }
+  Serial.println(" endbuffer");
+
   // read from the digital pin
-  int check = sensor.read(DHT11PIN);
+  int   check       = sensor.read(DHT11PIN);
+  float temperature = (float)sensor.temperature;
+  float humidity    = (float)sensor.humidity;
 
   // display Hum on the LCD screen
   lcd.setCursor(0, 0);
   lcd.print("Humidity (%): ");
-  lcd.print((float)sensor.humidity, 2);
+  lcd.print(humidity, 2);
 
   // display Temp on the LCD screen
   lcd.setCursor(0, 1);
   lcd.print("Temp (C): ");
-  lcd.print((float)sensor.temperature, 2);
+  lcd.print(temperature, 2);
 
-  // print Hum on the serial monitor
-  Serial.print("Humidity (%): ");
-  Serial.println((float)sensor.humidity, 2);
+  // const char DATA_TO_SEND[] = "{\"Humidity\":\"" + (String)humidity + "\", \"Temperature\":\"" + (String)temperature + "\"} ";
 
-  // print Temp on the serial monitor
-  Serial.print("Temperature (C): ");
-  Serial.println((float)sensor.temperature, 2);
+
+  String sensorData = "{\"Humidity\":\"";
+  sensorData += (String)humidity;
+  sensorData += "\", \"Temperature\":\"";
+  sensorData += (String)temperature;
+  sensorData += "\"}";
+  sensorData += "\r\n";
+
+  Serial.println(sensorData);
+  sendDataToWiFi(sensorData, 1000, DEBUG);
 
   delay(2000); // take measurements every 2 sec
+}
+
+String sendDataToWiFi(String command, const int timeout, boolean debug)
+{
+    String response = "";
+
+    wifi.print(command); // send the read character to the esp8266
+
+    long int time = millis();
+
+    while((time+timeout) > millis()) {
+      while(wifi.available()) {
+        // The esp has data so display its output to the serial window
+        char c = wifi.read(); // read the next character.
+        response+=c;
+      }
+    }
+
+    Serial.print(response);
+
+    return response;
 }