C++ EthernetUDP::remoteIP方法代码示例

void loop() {
  // if there's data available, read a packet
  int packetSize = Udp.parsePacket();
  char Size[4];
  if(packetSize)
  {
    if(packetSize == 4)
    {
      IPAddress remote = Udp.remoteIP();
    
      // read the packet into packetBufffer
      Udp.read(packetBuffer,UDP_TX_PACKET_MAX_SIZE);
      char Command[4];
      for(int nCom = 0; nCom < 4; nCom++)
        {
        Command[nCom] = packetBuffer[nCom];
        }
            
      if (Command[0] == 't')
      {
        digitalWrite(13, HIGH);
      }
      else if (Command[0] == 'r')
      {
        digitalWrite(12, HIGH);
      }
      else if (Command[0] == 'e')
      {
        digitalWrite(10, HIGH);
      }   
      else if (Command[0] == 'w')
      {
        analogWrite(11, 65);
      }      
      else
      {
        digitalWrite(13, LOW);
        digitalWrite(12, LOW);
        analogWrite(11, 0);
      }

      // send a reply, to the IP address and port that sent us the packet we received
      itoa(packetSize, Size, 10);
      Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
      Udp.write(ReplyBuffer);
      Udp.write(packetBuffer);
      Udp.write(Size);
      Udp.endPacket();
    delay(1000);
    }
    else
    {
      Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
      Udp.write("NOPE");
      Udp.endPacket();
    }
  }
}

void uartToUdp()
{
  bool sendIt = false;

  if (Serial.available() > 0)
  {
    uartBuffer[uartCounter] = Serial.read();
    if (uartBuffer[uartCounter] == HDLC_SS_BYTE)
    {
      if (hdlcStart)sendIt = true;
      else
      {
        hdlcStart = true;
        Timer1.start();
      }
    }
    else if (hdlcStart)
    {
      ++uartCounter;
    }
  }

  if (sendIt)
  {
    Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
    Udp.write(uartBuffer, uartCounter);
    Udp.endPacket();
    resetUartBuffer();
  }
}

// This function's purpose is to receive data and prepare it for parsing
void RobotOpenClass::handleData() {
	_packetBufferSize = Udp.parsePacket();
    
    // If there's data, read the packet in
    if (_packetBufferSize > 0) {
		_remotePort = Udp.remotePort();
		_remoteIp = Udp.remoteIP();
		Udp.read(_packetBufferAccessor, 256);
		parsePacket();	// Data is all set, time to parse through it
    }
}

roveEthernet_Error roveEthernet_GetUdpMsg(roveIP* senderIP, void* buffer, size_t bufferSize)
{
  int packetSize = udpReceiver.parsePacket(); 
  
  if (packetSize > 0) //if there is a packet available
  {
    udpReceiver.read((char*)buffer, bufferSize);
    *senderIP = udpReceiver.remoteIP();
    return ROVE_ETHERNET_ERROR_SUCCESS;
  }
  else
  {
    return ROVE_ETHERNET_ERROR_WOULD_BLOCK;
  }
}

void Notification::sendUDPNotification(EthernetUDP &udpSocket, aJsonObject *pushurl_channel, char *payload1, extData payload2)
{
  Serial.print(F("Sending a UDP response: "));
  Serial.println(payload1);

  udpSocket.beginPacket(udpSocket.remoteIP(), udpSocket.remotePort());

  // The actual payload
  udpSocket.write(payload1);

  // Extra payload is generated by running a callback function
  if (payload2 != NULL)
  {
    (*payload2)(&udpSocket);
  }

  udpSocket.write("}"); // The end of the JSON data, i.e. '}'
  udpSocket.endPacket();
}

void commandInterfaceTick() {
  int packetSize = cmdsock.parsePacket();
  if(cmdsock.available()) {
    
    // read the packet into packetBufffer
    cmdsock.read(udpPacketBuffer, PACKET_SIZE);

    if(memcmp("INGV\0", udpPacketBuffer, 5) != 0) {
      return;
    }

    bool reboot = false;
    unsigned long unixTimeM = getUNIXTime();
    unsigned long uptime = getUNIXTime() - getBootTime();
    byte macaddress[6] = { 0 };
    getMACAddress(macaddress);
    uint32_t probeSpeed = getProbeSpeedStatistic();
    uint32_t freeramkb = freeMemory();
    float latency = 0;
    if(udpPacketBuffer[5] == PKTTYPE_GETINFO) {
      latency = tcpLatency();
    }

    float longitude = 0;
    float latitude = 0;

    switch(udpPacketBuffer[5]) {
      case PKTTYPE_DISCOVERY:
        // Reply to discovery
        udpPacketBuffer[5] = PKTTYPE_DISCOVERY_REPLY;

        memcpy(udpPacketBuffer + 6, macaddress, 6);
        
        memcpy(udpPacketBuffer + 12, getVersionAsString().c_str(), 4);
        memcpy(udpPacketBuffer + 16, "uno", 3);
        break;
      case PKYTYPE_PING:
        // Reply to ping
        udpPacketBuffer[5] = PKYTYPE_PONG;
        break;
      case PKTTYPE_SENDGPS:
        // Get coords
        udpPacketBuffer[5] = PKTTYPE_OK;

        memcpy(&latitude, udpPacketBuffer + 12, 4);
        memcpy(&longitude, udpPacketBuffer + 16, 4);
        reverse4bytes((byte*)&latitude);
        reverse4bytes((byte*)&longitude);
        
        break;
      case PKTTYPE_REBOOT:
        // Reboot
        // Reply with OK
        udpPacketBuffer[5] = PKTTYPE_OK;
        reboot = true;
        break;
      case PKTTYPE_GETINFO:
        udpPacketBuffer[5] = PKTTYPE_GETINFO_REPLY;

        memcpy(udpPacketBuffer + 6, macaddress, 6);
        memcpy(udpPacketBuffer + 28, &uptime, 4);
        memcpy(udpPacketBuffer + 32, &unixTimeM, 4);
        memcpy(udpPacketBuffer + 36, VERSION, 4);
        memcpy(udpPacketBuffer + 40, &freeramkb, 4);
        memcpy(udpPacketBuffer + 44, &latency, 4);
        memcpy(udpPacketBuffer + 53, "uno", 3);
        memcpy(udpPacketBuffer + 57, "MMA7361", 7);
        memcpy(udpPacketBuffer + 65, &probeSpeed, 4);

        break;
#ifdef RESET_ENABLED
      case PKTTYPE_RESET:
        initEEPROM();
        reboot = true;
        break;
#endif
      default:
        // Unknown packet or invalid command
        return;
    }

    if(longitude != 0 && latitude != 0) {
      setLongitude(longitude);
      setLatitude(latitude);
    }

    cmdsock.beginPacket(cmdsock.remoteIP(), cmdsock.remotePort());
    cmdsock.write(udpPacketBuffer, PACKET_SIZE);
    cmdsock.endPacket();
    cmdsock.flush();

    if(reboot) {
      soft_restart();
    }
  }
}

SNMP_API_STAT_CODES AgentuinoClass::responsePdu(SNMP_PDU *pdu)
{
	int32_u u;
	byte i;
	//
	// Length of entire SNMP packet
	_packetPos = 0;  // 23
	_packetSize = 25 + sizeof(pdu->requestId) + sizeof(pdu->error) + sizeof(pdu->errorIndex) + pdu->OID.size + pdu->VALUE.size;
	//
	memset(_packet, 0, SNMP_MAX_PACKET_LEN);
	//
	if ( _dstType == SNMP_PDU_SET ) {
		_packetSize += _setSize;
	} else {
		_packetSize += _getSize;
	}
	//
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_SEQUENCE;	// type
	_packet[_packetPos++] = (byte)_packetSize - 2;		// length
	//
	// SNMP version
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_INT;	// type
	_packet[_packetPos++] = 0x01;			// length
	_packet[_packetPos++] = 0x00;			// value
	//
	// SNMP community string
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_OCTETS;	// type
	if ( _dstType == SNMP_PDU_SET ) {
		_packet[_packetPos++] = (byte)_setSize;	// length
		for ( i = 0; i < _setSize; i++ ) {
			_packet[_packetPos++] = (byte)_setCommName[i];
		}
	} else {
		_packet[_packetPos++] = (byte)_getSize;	// length
		for ( i = 0; i < _getSize; i++ ) {
			_packet[_packetPos++] = (byte)_getCommName[i];
		}
	}
	//
	// SNMP PDU
	_packet[_packetPos++] = (byte)pdu->type;
	_packet[_packetPos++] = (byte)( sizeof(pdu->requestId) + sizeof((int32_t)pdu->error) + sizeof(pdu->errorIndex) + pdu->OID.size + pdu->VALUE.size + 14 );
	//
	// Request ID (size always 4 e.g. 4-byte int)
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_INT;	// type
	_packet[_packetPos++] = (byte)sizeof(pdu->requestId);
	u.int32 = pdu->requestId;
	_packet[_packetPos++] = u.data[3];
	_packet[_packetPos++] = u.data[2];
	_packet[_packetPos++] = u.data[1];
	_packet[_packetPos++] = u.data[0];
	//
	// Error (size always 4 e.g. 4-byte int)
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_INT;	// type
	_packet[_packetPos++] = (byte)sizeof((int32_t)pdu->error);
	u.int32 = pdu->error;
	_packet[_packetPos++] = u.data[3];
	_packet[_packetPos++] = u.data[2];
	_packet[_packetPos++] = u.data[1];
	_packet[_packetPos++] = u.data[0];
	//
	// Error Index (size always 4 e.g. 4-byte int)
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_INT;	// type
	_packet[_packetPos++] = (byte)sizeof(pdu->errorIndex);
	u.int32 = pdu->errorIndex;
	_packet[_packetPos++] = u.data[3];
	_packet[_packetPos++] = u.data[2];
	_packet[_packetPos++] = u.data[1];
	_packet[_packetPos++] = u.data[0];
	//
	// Varbind List
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_SEQUENCE;	// type
	_packet[_packetPos++] = (byte)( pdu->OID.size + pdu->VALUE.size + 6 ); //4
	//
	// Varbind
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_SEQUENCE;	// type
	_packet[_packetPos++] = (byte)( pdu->OID.size + pdu->VALUE.size + 4 ); //2
	//
	// ObjectIdentifier
	_packet[_packetPos++] = (byte)SNMP_SYNTAX_OID;	// type
	_packet[_packetPos++] = (byte)(pdu->OID.size);
	for ( i = 0; i < pdu->OID.size; i++ ) {
		_packet[_packetPos++] = pdu->OID.data[i];
	}
	//
	// Value
	_packet[_packetPos++] = (byte)pdu->VALUE.syntax;	// type
	_packet[_packetPos++] = (byte)(pdu->VALUE.size);
	for ( i = 0; i < pdu->VALUE.size; i++ ) {
		_packet[_packetPos++] = pdu->VALUE.data[i];
	}
	//
	Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
	Udp.write(_packet, _packetSize);
	Udp.endPacket();
//	Udp.write(_packet, _packetSize, _dstIp, _dstPort);
	//
	return SNMP_API_STAT_SUCCESS;
}

void loop() {

    if ((unsigned long) (millis() - previousEth) >= interval_ethernet) { //entra a cada 50ms
        previousEth = millis();
        if(count_eth == 0) { //espera completar um ciclo de todas as funções chamadas
            int packetSize = Udp.parsePacket();
            count_eth = 2;
            Serial.println("entrou eth");
            received = 0;
            if (packetSize) {
                set_debug(PC3);

#ifdef debug
                Serial.println("entrou eth RX ");
                Serial.print("Received packet of size ");
                Serial.println(packetSize);
                Serial.print("From ");
                IPAddress remote = Udp.remoteIP();
                for (int i =0; i < 4; i++)
                {
                    Serial.print(remote[i], DEC);
                    if (i < 3)
                    {
                        Serial.print(".");
                    }
                }
                Serial.print(", port ");
                Serial.println(Udp.remotePort());

                Serial.println("Contents:");
                Serial.println(packetBuffer);
#endif
                received = Udp.read();
                charBuffer.put(received);

#ifdef debug
                Serial.println("\rchar recebido:");
                Serial.write(received);
#endif

                /////////////////////////////
                clear_debug(PC3);
            }
        } else {
            count_eth--;
            Serial.println("entrou eth NADA");
            if (charBuffer.getSize() > 5) charBuffer.clear();
            if( charBuffer.getSize() > 0 )
                received = charBuffer.get();
            Serial.println("received:");
            Serial.println(received);

        }
    }
#ifdef debug
    Serial.println("client disconnected");
#endif
    /****************FIM ROTINA ETHERNET ***************************************************/


    if ((unsigned long) (millis() - previousADC) >= interval_adc) { //entra a cada 60ms
        previousADC = millis();
        set_debug(PC4);
        if (count_adc == 0) {
            count_adc = 1;
            /*testa obstaculo IR*/
            Serial.println("entrou adc OBSTACULO ");

            IR_obstaculo = 0;
            IR_obstaculo = verificaObstaculoIR();
#ifdef debug
            Serial.println("distancia_ir");
            Serial.println(IR_obstaculo);
            Serial.println("\r");
#endif
            if (IR_obstaculo > IR_OBSTACLE_THRESHOLD)
                obstacle_flag = 0;
            else if (IR_obstaculo > IR_OBSTACLE_THRESHOLD
                    && IR_obstaculo < IR_OBSTACLE_UPPER_THRESHOLD)
                obstacle_flag = 1;
            else if (IR_obstaculo <= IR_OBSTACLE_THRESHOLD)
                obstacle_flag = 2;
            clear_debug(PC4);
        } else {
            count_adc=0;
            Serial.println("entrou adc NADA ");

        }
    }

    /***************** FIM ROTINA ADC********************************/

    if ((unsigned long) (millis() - previousMotores) >= interval_motores) { //entra a cada 100ms
        previousMotores = millis();

        if (ciclosClock_motor == 2) { //duas bordas de subida depois de acionar o motor (200ms depois de acionar o motor)
            Serial.println("motor stop ");
            stopMove();
            ciclosClock_motor = 0;
        }
//.........这里部分代码省略.........

IPAddress SNMPClass::remoteIP(){
  return Udp.remoteIP();
}