GPIO relè on Sender implementation

LoRaSender/LoRaSender.ino

@@ -69,6 +69,9 @@ void setup(void)
 
  //-------------------------------------
 
+ pinMode(17, OUTPUT);
+ digitalWrite(17, LOW); // set GPIO17 low
+ 
  //Initialize serial and wait for port to open:
  Serial.begin(115200);
  
@@ -141,12 +144,24 @@ void drawTextOLED(String text, String ttext, String rread, String signalLevel) {
 
 String s;
 unsigned long previousMillis = 0;
+unsigned long previousMillisGPIO = 0;
 const long interval = 10000;
 
+//reqInt == variabile globale per sapere qual'è l'ultimo pin GPIO settato
+int reqInt = 17; // just for first run
+
 void loop(void)
 {
+ unsigned long currentMillis = millis();
+ 
  drawTextOLED(lastCommand, ipAddr, lastReceived, signalLevel);
-
+ 
+ if(previousMillisGPIO < currentMillis)
+ {
+ //reqInt == variabile globale per sapere qual'è l'ultimo pin GPIO settato
+ digitalWrite(reqInt, LOW); // set GPIO17 low
+ }
+ 
  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
@@ -172,7 +187,7 @@ void loop(void)
  
  client.flush();
 
- unsigned long currentMillis = millis();
+ currentMillis = millis();
 
  if (req == "/")
  {
@@ -212,6 +227,15 @@ void loop(void)
  s += lastCommand;
  s += "";
  }
+ } else if (req.indexOf('/gpio') > 0) {
+ //OK send s to browser
+ 
+ pinGPIO(req);
+ s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
+ s += req;
+ s += "";
+ 
+ previousMillisGPIO = currentMillis + 2000;
  } else {
  s = "HTTP/1.1 404 Not Found\r\n\r\n";
 // Serial.println("Sending 404");
@@ -289,6 +313,15 @@ void pinRequestRead(String req)
  LoRa.receive();
 }
 
+void pinGPIO(String req)
+{
+ req = req.substring(req.lastIndexOf('/') + 1);
+ reqInt = req.toInt();
+
+ lastCommand = "gpio : " + String(reqInt);
+
+ digitalWrite(reqInt, HIGH); // set GPIO17 high
+}
 //----------------------------------------------------------------------------------------------
 //---------------------------------------- ENCRIPTION ------------------------------------------
 //----------------------------------------------------------------------------------------------