Arduino 库中有多个定义错误

Multiple definition errors in Arduino library

本文关键字:定义 错误 Arduino      更新时间:2023-10-16

我正在尝试从Arduino 1.0.5中的 https://github.com/janisHD/LightRobot 编译lightRobot.ino Arduino草图,但是lightRobot库中的函数出现多个定义错误。我使用的是OS X 10.8.5,但在Windows 8中遇到了同样的问题。

以下是 .h 和 .cpp 文件的示例:

蓝牙事件.h

/*! file BlueToothEvent.h checks periodically if new data over BT has been received.
*/
#include <Arduino.h>
#include <OrangutanLCD.h>
#include "TimeEvent.h"
#ifndef BLUETOOTH_EVENT_H
#define BLUETOOTH_EVENT_H
#define DATA_WORD_LENGTH 4
/*! class BlueToothEvent
retrieves and stores the received BT data. The data should come over the serialport, it must be started in "setup".
The struct DataPacket publishes the parsed data for the Statemanager.
*/
class BlueToothEvent : public TimeEvent
{
  public:
  struct DataPacket {
  char speed;
  char direction;
  int color[4]; // [3]==blue [2]==green [1]==red [0]==brightness
  int mode[2]; // [1]==color mode (0000->remote, 0001->blink, 0010->random, 0011->random&blink)   [0]==drive mode (0000->remote, 0001->random) 
    };
  BlueToothEvent();
  ~BlueToothEvent(){};
  /*! Callback which is executed periodically*/
  virtual void onTimeEvent();
  /*! Returns an internal state.*/
  virtual unsigned char getInternalState();
  /*! Sets an internal state.*/
  virtual void setInternalState(unsigned char state, bool update=false);
  /*! Executes a more complex (and time consuming) action.*/
  virtual void executeAction();
  /*! To get the received data in the DataPacket struct
  return The most recent data received via Serial connection
  */
  DataPacket getDataPacket();
  bool m_new_data_present;

private:
/*! Processes the array with a 4 byte data word and saves the information in the DataPacket field.
param data the array (must have the length of 4 bytes)
*/
void processData(unsigned char* data);
  private:
  enum Data{
    velocity=0,//desired velocity
    direction,//direction to drive
    color,//desired color of the LEDs
    mode,//the different modes: remote, random, blink
  };
  unsigned char m_data[DATA_WORD_LENGTH];
  struct DataPacket m_data_packet;
};
#endif

蓝牙事件.cpp

#include "BlueToothEvent.h"
 BlueToothEvent::BlueToothEvent():
 TimeEvent(),
 m_new_data_present(false)
{
  //init data array
  m_data[velocity] = 0;
  m_data[direction] = 0;
  m_data[color] = 0;
  m_data[mode] = 0;
  processData(m_data);
  //Serial connection
}
void BlueToothEvent::onTimeEvent()
{   
    //Code to receive a single data word and store it in m_data field
        //Word consists of 4 chars (see the docu for further explanations): 
        //[0] -> direction to drive [0-254]
        //[1] -> velocity to drive [0-254]
        //[2] -> desired color for the Light [0-254] in 2 bit packets -> b0[0,3]->Brightnes | [0,3]->Red| [0,3]->Green | [0,3]->Blue
        //[3] -> internal mode (see responsible class)[0-254]
        if(Serial.available() >= DATA_WORD_LENGTH)
        {//minimum number of bytes must be available in the buffer
          while(Serial.available() > DATA_WORD_LENGTH)
            Serial.read();//clear buffer except the last 4 bits
          m_data[velocity] = (char)Serial.read();
          m_data[direction] = (char)Serial.read();
          m_data[color] = (char)Serial.read();
          m_data[mode] = (char)Serial.read();
          processData(m_data); 
          m_new_data_present = true;
        }
}
void BlueToothEvent::processData(unsigned char* data)
{
  m_data_packet.speed = data[velocity];
  m_data_packet.direction = data[direction];
  m_data_packet.color[0] = data[color] & 0b00000011;
  m_data_packet.color[1] = (data[color] & 0b00001100)>>2;
  m_data_packet.color[2] = (data[color] & 0b00110000)>>4;
  m_data_packet.color[3] = (data[color] & 0b11000000)>>6;
  m_data_packet.mode[0] = data[mode] & B00001111;
  m_data_packet.mode[1] = (data[mode] & B11110000)>>4;
}

BlueToothEvent::DataPacket BlueToothEvent::getDataPacket()
{
  m_new_data_present = false;
  return m_data_packet;
}
//unsigned char BlueToothEvent::getData(unsigned char field)
//{
//  if(field <= mode)
//    return m_data[field];
//  else
//    return 0;
//}
unsigned char BlueToothEvent::getInternalState()
{
  return m_data[mode];
}
void BlueToothEvent::setInternalState(unsigned char state, bool update)
{
  //nothing to do here!
}
void BlueToothEvent::executeAction()
{
    //nothing to do here!
}

我在编译时收到以下错误 - 我只显示了列出的一对 .h/.cpp 文件的错误 - lightRobot 库中的每个文件都有类似的错误:

lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent::processData(unsigned char*)':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:43: multiple definition of `BlueToothEvent::processData(unsigned char*)'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:43: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:4: multiple definition of `BlueToothEvent::BlueToothEvent()'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:4: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:4: multiple definition of `BlueToothEvent::BlueToothEvent()'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:4: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent::getDataPacket()':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:56: multiple definition of `BlueToothEvent::getDataPacket()'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:56: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent::getInternalState()':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:73: multiple definition of `BlueToothEvent::getInternalState()'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:73: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent::setInternalState(unsigned char, bool)':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:78: multiple definition of `BlueToothEvent::setInternalState(unsigned char, bool)'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:78: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent::executeAction()':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:83: multiple definition of `BlueToothEvent::executeAction()'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:83: first defined here
lightRobot/BlueToothEvent.cpp.o: In function `BlueToothEvent::onTimeEvent()':
/Users/lemmy/Documents/Arduino/libraries/lightRobot/BlueToothEvent.cpp:18: multiple definition of `BlueToothEvent::onTimeEvent()'
BlueToothEvent.cpp.o:BlueToothEvent.cpp:18: first defined here

似乎错误发生在目标文件中,但我不确定为什么,因为头文件对它们有保护以防止多个定义。

如果其他人后来遇到这个问题,我遇到了同样的问题,并通过删除草图中库文件上的选项卡来修复它。当您#include "lib.h"

>

当我将 .ino 文件移出 lightRobot 文件夹时,编译成功。

我知道

你已经找到了答案,但是,对于未来的搜索者,我遇到了同样的问题。我通过重命名 .ino 的主文件夹并从文件夹中删除任何 .h 或 .cpp 文件来修复它。

注意:我不知道这是怎么发生在我身上的,但这可能是其他人的问题。