Arduino/SOMFY_433_42/SOMFY_433_42.ino

#include <EEPROM.h>
  
#define PORT_TX 5
#define SYMBOL 640
#define HAUT 0x2
#define STOP 0x1
#define BAS 0x4
#define PROG 0x8
#define EEPROM_ADDRESS 0
#define VERSION 1
 
  
byte frame[7];
byte checksum;
  
struct Remote
{
  unsigned long remoteID;
  unsigned int rollingCode;
};
  
struct SomfyController  
{
  int appVersion; 
  Remote remotes[4];
};
  
SomfyController somfyControllers;
  
Remote newRemotes [4] = {
  {0x123456, 0},
  {0x123457, 0},
  {0x123458, 0},
  {0x123459, 0}
};
  
void BuildFrame(unsigned long remoteID, unsigned int rollingCode, byte *frame, byte button);
void SendCommand(byte *frame, byte sync);

void setup()  
{
  Serial.begin(115200); 
  DDRD |= 1<<PORT_TX;
  PORTD &= !(1<<PORT_TX);

  EEPROM.get(EEPROM_ADDRESS, somfyControllers);

  if (somfyControllers.appVersion < VERSION) 
  {
    Serial.println("La version de l'application en mémoire n'est pas dans la bonne version ou la mémoire est vide");
    somfyControllers.appVersion = VERSION;  
    memcpy(&somfyControllers.remotes, &newRemotes, sizeof(newRemotes));
    
    EEPROM.put(EEPROM_ADDRESS, somfyControllers);
  
  }

  for (int i = 0; i < (sizeof(somfyControllers.remotes) / sizeof(Remote)); i++)
  {
    Remote currentRemote = somfyControllers.remotes[i];
  
    Serial.print("Commande ["); Serial.print(i); Serial.println("]");
  
    Serial.print("\tID de la commande : "); Serial.println(currentRemote.remoteID, HEX);
  
    Serial.print("\tCompteur actuel : "); Serial.println(currentRemote.rollingCode);
  
  }
  
}
  
 
  
void loop()
  
{
  
  if (Serial.available())
  
  {
  
    String data = "";
  
    
  
    while (Serial.available())
  
    {
  
      char c = Serial.read();
  
      data += String(c);
  
      delay(10);
  
    }
  
 
  
    char serie = data[0];
  
 
  
    for (int i = 1; i < data.length(); i++)
  
    {
  
      char cRemotePosition = data[i];
  
      
  
      int remotePosition = cRemotePosition - '0';
  
      Serial.print("Commande "); Serial.println(remotePosition);
  
 
  
      Remote remote = somfyControllers.remotes[remotePosition];
  
      unsigned long remoteID = remote.remoteID;
  
      unsigned int rollingCode = remote.rollingCode;
  
      
  
      Serial.println("");
  
      if (serie == 'm')
  
      {
  
        Serial.println("Monte");
  
        BuildFrame(remoteID, rollingCode, frame, HAUT);
  
      }
  
      else if (serie == 's')
  
      {
  
        Serial.println("Stop");
  
        BuildFrame(remoteID, rollingCode, frame, STOP);
  
      }
  
      else if (serie == 'd')
  
      {
  
        Serial.println("Descend");
  
        BuildFrame(remoteID, rollingCode, frame, BAS);
  
      }
  
      else if (serie == 'p')
  
      {
  
        Serial.println("Prog");
  
        BuildFrame(remoteID, rollingCode, frame, PROG);
  
      }
  
      else
  
      {
  
        Serial.println("Code custom");
  
        BuildFrame(remoteID, rollingCode, frame, serie);
  
      }
  
  
  
      Serial.println("");
  
      SendCommand(frame, 2);
  
      for (int i = 0; i < 2; i++)
  
      {
  
        SendCommand(frame, 7);
  
      }
  
  
  
      //Incrémente le compteur et le sauvegarde en mémoire
  
      somfyControllers.remotes[remotePosition].rollingCode++;
  
      EEPROM.put(EEPROM_ADDRESS, somfyControllers);
  
    }
  
  }
  
}
  
 
  
 
  
void BuildFrame(unsigned long remoteID, unsigned int rollingCode, byte *frame, byte button)
  
{
  
  frame[0] = 0xA7;
  
  frame[1] = button << 4;
  
  frame[2] = rollingCode >> 8;
  
  frame[3] = rollingCode;
  
  frame[4] = remoteID >> 16;
  
  frame[5] = remoteID >>  8;
  
  frame[6] = remoteID;
  
 
  
  Serial.print("Frame         : ");
  
  for (byte i = 0; i < 7; i++)
  
  {
  
    if (frame[i] >> 4 == 0)
  
    {
  
      Serial.print("0");
  
    }
  
    Serial.print(frame[i], HEX); Serial.print(" ");
  
  }
  
 
  
  checksum = 0;
  
  for (byte i = 0; i < 7; i++)
  
  {
  
    checksum = checksum ^ frame[i] ^ (frame[i] >> 4);
  
  }
  
  checksum &= 0b1111;
  
 
  
  frame[1] |= checksum;
  
 
  
 
  
  Serial.println(""); Serial.print("Avec checksum : ");
  
  for (byte i = 0; i < 7; i++)
  
  {
  
    if (frame[i] >> 4 == 0)
  
    {
  
      Serial.print("0");
  
    }
  
    Serial.print(frame[i], HEX); Serial.print(" ");
  
  }
  
 
  
  for (byte i = 1; i < 7; i++)
  
  {
  
    frame[i] ^= frame[i-1];
  
  }
  
 
  
  Serial.println(""); Serial.print("Obfuscation    : ");
  
  for (byte i = 0; i < 7; i++)
  
  {
  
    if (frame[i] >> 4 == 0)
  
    {
  
      Serial.print("0");
  
    }
  
    Serial.print(frame[i], HEX); Serial.print(" ");
  
  }
  
  Serial.println("");
  
  Serial.print("Compteur  : "); Serial.println(rollingCode);
  
}
  
 
  
void SendCommand(byte *frame, byte sync)
  
{
  
  if (sync == 2)
  
  {
  
    PORTD |= 1<<PORT_TX;
  
    delayMicroseconds(9415);
  
    PORTD &= !(1<<PORT_TX);
  
    delayMicroseconds(89565);
  
  }
  
 
  
  for (int i = 0; i < sync; i++)
  
  {
  
    PORTD |= 1<<PORT_TX;
  
    delayMicroseconds(4*SYMBOL);
  
    PORTD &= !(1<<PORT_TX);
  
    delayMicroseconds(4*SYMBOL);
  
  }
  
 
  
  PORTD |= 1<<PORT_TX;
  
  delayMicroseconds(4550);
  
  PORTD &= !(1<<PORT_TX);
  
  delayMicroseconds(SYMBOL);
  
  
  
  for (byte i = 0; i < 56; i++)
  
  {
  
    if (((frame[i/8] >> (7 - (i%8))) & 1) == 1)
  
    {
  
      PORTD &= !(1<<PORT_TX);
  
      delayMicroseconds(SYMBOL);
  
      PORTD ^= 1<<PORT_TX;
  
      delayMicroseconds(SYMBOL);
  
    }
  
    else
  
    {
  
      PORTD |= (1<<PORT_TX);
  
      delayMicroseconds(SYMBOL);
  
      PORTD ^= 1<<PORT_TX;
  
      delayMicroseconds(SYMBOL);
  
    }
  
  }
  
  
  
  PORTD &= !(1<<PORT_TX);
  
  delayMicroseconds(30415);
  
}