code module lora terrestre

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LORA_terrestre.ino
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+// Feather9x_RX
+// -*- mode: C++ -*-
+// Example sketch showing how to create a simple messaging client (receiver)
+// with the RH_RF95 class. RH_RF95 class does not provide for addressing or
+// reliability, so you should only use RH_RF95 if you do not need the higher
+// level messaging abilities.
+// It is designed to work with the other example Feather9x_TX
+#include <SPI.h>
+#include <RH_RF95.h>
+
+ //for feather m0  
+#define RFM95_CS 8
+#define RFM95_RST 4
+#define RFM95_INT 3
+
+//taille des paquets Lora envoyés à chaque émission
+#define TAILLE_RADIOPACKET 20
+
+// Change to 434.0 or other frequency, must match RX's freq!
+#define RF95_FREQ 434.0
+// Singleton instance of the radio driver
+RH_RF95 rf95(RFM95_CS, RFM95_INT);
+// Blinky on receipt
+#define LED 13
+
+
+
+//Fonction vidage de buffer série
+void serialFlush(){
+  pinMode(LED, OUTPUT);
+  while(Serial.available() > 0) {
+    char t = Serial.read();
+  }
+}
+
+void RAZradiopacket(uint8_t radiopacket[TAILLE_RADIOPACKET]){
+  int j;
+  for(j=0;j<TAILLE_RADIOPACKET;j++){
+  radiopacket[j] = '0';
+  }
+}
+
+
+
+void setup()
+{
+pinMode(LED, OUTPUT);
+pinMode(RFM95_RST, OUTPUT);
+digitalWrite(RFM95_RST, HIGH);
+while (!Serial);
+Serial.begin(9600);
+delay(100);
+//Serial.println("Feather LoRa RX Test!");
+// manual reset
+digitalWrite(RFM95_RST, LOW);
+delay(10);
+digitalWrite(RFM95_RST, HIGH);
+delay(10);
+while (!rf95.init()) {
+Serial.println("LoRa radio init failed");
+while (1);
+}
+Serial.println("Projet IMA Ballon atmospherique ");
+// Defaults after init are 434.0MHz, modulation GFSK_Rb250Fd250, +13dbM
+if (!rf95.setFrequency(RF95_FREQ)) {
+Serial.println("setFrequency failed");
+while (1);
+serialFlush();
+
+}
+Serial.print("Set Freq to: "); Serial.println(RF95_FREQ);
+// Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on
+// The default transmitter power is 13dBm, using PA_BOOST.
+// If you are using RFM95/96/97/98 modules which uses the PA_BOOST transmitter pin, then
+// you can set transmitter powers from 5 to 23 dBm:
+rf95.setTxPower(23, false);
+//RAZradiopacket(radiopacket_tmp);
+//RAZradiopacket(radiopacket);
+}
+
+
+int nb_envoi;
+uint8_t radiopacket[TAILLE_RADIOPACKET] ="null"; //Chaîne contenant la requête à envoyer à la nacelle 
+uint8_t radiopacket_tmp[TAILLE_RADIOPACKET]="null";
+
+void loop()
+  {
+    //DECLARATION VARIABLES ET INITIALISATION
+  char caractere_lu = 0; //caractere à lire
+  int caractere_dispo = 0; // nombre de caracteres dispo dans le buffer
+  int i_chaine = 0; //indique l'endroit où on doit écrire dans la chaîne
+ 
+  memcpy(radiopacket_tmp,radiopacket,TAILLE_RADIOPACKET);
+
+  //LECTURE REQUETE SUR PORT SERIE "SOL"
+  caractere_dispo = Serial.available(); 
+
+  while(caractere_dispo > 0) //tant qu'il y a des caractères à lire
+    {
+        caractere_lu = Serial.read(); //on lit le caractère
+        radiopacket[i_chaine] = caractere_lu;
+        Serial.print(caractere_lu); //puis on le renvoi à l’expéditeur tel quel
+        caractere_dispo = Serial.available(); //on relit le nombre de caractères dispo
+        i_chaine++;
+    }
+    radiopacket[i_chaine] = 0;  //  marquage fin du packet 
+
+    //si la donnée reçu est différente de la précédente
+    if(memcmp(radiopacket,radiopacket_tmp,TAILLE_RADIOPACKET)!=0){
+      Serial.print("\nRequete differente\n");
+      nb_envoi = 0;
+    }
+
+    
+   //ENVOI REQUETE 
+   if (nb_envoi==0){    
+    rf95.send((uint8_t *)radiopacket, sizeof(radiopacket));
+    Serial.print("Envoi commande\n");
+    nb_envoi++;   
+   Serial.print("Nb_envoi:");
+   Serial.println(nb_envoi);
+   //radiopacket[0] = '0';
+   //RAZradiopacket(radiopacket);
+   }
+   
+   
+  
+    //LECTURE DONNEES VENANT DE LA NACELLE 
+    if (rf95.available())
+      {
+       // Should be a message for us now
+       uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
+       uint8_t len = sizeof(buf);
+         if (rf95.recv(buf, &len))
+          {
+            digitalWrite(LED, HIGH);
+           // RH_RF95::printBuffer("Received: ", buf, len);
+            Serial.print("Reception: ");
+            Serial.println((char*)buf);
+            serialFlush();
+            
+            
+            
+            // Send a reply
+            //rf95.send(data, sizeof(data));
+            //rf95.waitPacketSent();
+            //Serial.println("Sent a reply");
+            //digitalWrite(LED, LOW);
+          }
+          else
+            {
+              Serial.println("Receive failed");
+              }
+        }
+     delay(200);
+}
+