Question

我在arduino草图上遇到了一个奇怪的问题。我的草图非常复杂，所以我决定写一些类。基本上，它通过JSON格式的TCP连接接收一些数据，并根据解码数据进行一些操作。

我使用库“Arduino Json”解码CLASS“PacketManager”中收到的JSON。然后我将JSON对象传递给类“Bollard”以执行命令（代码将跟随）。奇怪的是，在“CommandExecutor”方法中的“Bollard”类中，我访问了我传递的数据，我可以使用它们，但在同一方法的代码中，数据转到0的某个时刻。当然，我已经检查过该方法中的数据没有被覆盖。草图没有任何中断或多线程。好像变量得到了解除分配形式的内存或者内存块被覆盖了。

///收到JSON的CLASS PACKETMANAGER的片段

void PacketManager::readPacket(){
resultRead reads=socket.readSocket();  //get data from soket
if(reads.mainCounter>0){  // if data
  delay(150);
  StaticJsonBuffer<200> jsonBuffer; //create a static json buffer form the library ArduinoJson.h
  JsonObject& incomingFrame = jsonBuffer.parseObject((char*)reads.frame); //craete a JSON oblect 
  delay(150);
  incomingFrame.printTo(Serial);  // print the Incoming JSON
  Serial.println();
  if(incomingFrame.success()){ // check if JSON get decoded correclty
    Serial.println("JSON DECODED SUCCESSFULLY");
    unsigned int  eventType=incomingFrame["eventType"];
    unsigned int  packetNumber=incomingFrame["packetNumber"];
    if(eventType==ACK_STANDARD_MESSAGE){ //  ACK standard case
      if(this->checkACK(packetNumber)){  // CHECK If the incoming ACK found a corrispondence with the packet sended
       #ifdef DEBUG_MODE
          Serial.println("ACK RECEIVED");
        #endif
        bollard.commandExecute(incomingFrame);  // if ack is in response of a sended command execute a command form the class bollard.
      }
    }
   ................ CODE CONTINUE. THE ERROR IS ON METHOD bollard.commandExecute(incomingFrame)

///////////////使用JSON对象的类别BOLLARD的碎片

commandResult* BikeBollard::commandExecute(JsonObject& incomingFrame){
  unsigned int* statusResponse= new unsigned int;  // CREATE STATIC POINTER
  unsigned int* eventType= new unsigned int;
  unsigned int* commandType= new unsigned int;
  unsigned int* packetNumber= new unsigned int;
  // GET DATA FORM THE JSON OBJECT
  unsigned int statusResponse_volatile=(unsigned int)incomingFrame["status"];
  unsigned int eventType_volatile=(unsigned int)incomingFrame["eventType"]; 
  unsigned int commandType_volatile=(unsigned int)incomingFrame["commandType"]; 
  unsigned int packetNumber_volatile=(unsigned int)incomingFrame["packetNumber"];
  // ASSIGN TO THE STATIC POINTED VALUE
  *statusResponse=statusResponse_volatile;
  *eventType=eventType_volatile;
  *commandType=commandType_volatile;
  *packetNumber=packetNumber_volatile;
  commandResult* result;
  Serial.print("STATUS OF THE RESPONSE ");Serial.println(*statusResponse);  // correct value
  Serial.print("EVENT TYPE ");Serial.println(*eventType);  // correct value
  Serial.print("COMMAND TYPE ");Serial.println(*commandType); // correct value
  Serial.print("PACKET NUMBER ");Serial.println(*packetNumber); // correct value

    ///////////////////////////// FROM HERE SOMETIMES THE VALUES *commandType AND *eventType GO TO 0 WITHOUT A REASON /////////////////////////// 

  if(*eventType==ACK_STANDARD_MESSAGE){ //  ACK vase
     Serial.print("STATUS OF THE RESPONSE ");Serial.println(*statusResponse);  // correct value
     *eventType=*commandType;
     Serial.print("STATUS OF THE RESPONSE ");Serial.println(*statusResponse);  // correct value
     result->ackPriority=false;
  } 

  result->type=*eventType;
  #ifdef DEBUG_MODE
    Serial.print("BOLLARD: EXECUTE COMMAND "); Serial.println(*eventType);
  #endif
  switch(*eventType){ // wrong value pass form the correct value to 0 sometimes
    case MSG_UP:
    {
      Serial.println("ACK MSG_UP Received");
      result=this->executeMessageUp(*eventType, *packetNumber);  
      break;
    }
    case MSG_LATCH:
    {
      Serial.println("ACK MSG_LATCH Received");
      this->executeMessageLatch(*eventType, *packetNumber); 

      break;
    }
    case MSG_UP_OK:
    {
      // DO SOMETHING
      break;
    }
    case MSG_UP_ERROR:
    {
     // DO SOMETHING
      break;
    }
    case MSG_PRESENT:
    {
     // DO SOMETHING
      break;
    }
    case LOGIN_MESSAGE:
    {
      Serial.println("NOTICE: Logged IN");
      this->loggedIn=true;
      break;
    }  
    case MSG_CARD:
    {
      Serial.println("ACK MSG_CARD Received");
      if(*statusResponse==1){
        Serial.println("DO EXECUTE MSG-UP");
        result=this->executeMessageUp(*eventType, *packetNumber);
      }
      else {
        //DO SOMETHING
      }
      break;
    }
    case MSG_BOLLARD_ACTIVATION:
    {

     Serial.print("STATUS OF THE RESPONSE ");Serial.println(*statusResponse);  // 0  ERROR *statusResponse changed it's value.

     if(*statusResponse==1) {
      if(!this->isActive)checkBollardStatusWaitingTime=CHECK_BOLLARD_STATUS_TIME+1; // set bolard to active
      this->isActive=true;
     }
     else{
      if(this->isActive)checkBollardStatusWaitingTime=CHECK_BOLLARD_STATUS_TIME+1; // check againg the status
      this->isActive=false;
     }
      break;
    }
    default:{
      Serial.print("NOT CODED EVENT "); Serial.println(*eventType);
     result->type=0;
     #ifdef DEBUG_MODE
      Serial.println("Default Message Expired");
    #endif
      break;
    }
  }
  delete statusResponse;
  delete eventType;
  delete commandType;
  delete packetNumber;

  return result;
}

希望有人可以提供帮助。 Tx适合您的时间。

Answer 1

根据TinyT的建议，我已将commandResult* result声明为commandResult result = new commandResult;，并更改了结果的其余代码，并在最后删除它以防止内存泄漏。这是造成内存问题的变量。

Tx TinyT

Arduino，在代码执行期间失去变量值

1 个答案: