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The latest modified version of Remon Spekreijse's serial port class(2017-03-12)

Home Page: http://blog.csdn.net/itas109/article/details/51337538

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cserialport's Introduction

CSerialPort

First Version by Remon Spekreijse on 2000-02-08 http://www.codeguru.com/cpp/i-n/network/serialcommunications/article.php/c2483/A-communication-class-for-serial-port.htm

Second Version by mrlong on 2007-12-25 https://code.google.com/p/mycom/

  • 增加 ClosePort
  • 增加 WriteToPort 两个方法
  • 增加 SendData 与 RecvData 方法

by liquanhai on 2011-11-04 http://blog.csdn.net/liquanhai/article/details/4955253

  • 增加 ClosePort 中交出控制权,防止死锁问题

by liquanhai on 2011-11-06 http://blog.csdn.net/liquanhai/article/details/6941574

  • 增加 ReceiveChar 中防止线程死锁

by viruscamp on 2013-12-04 https://github.com/viruscamp/CSerialPort

  • 增加 IsOpen 判断是否打开
  • 修正 InitPort 中 parity Odd Even 参数取值错误
  • 修改 InitPort 中 portnr 取值范围,portnr>9 时特殊处理
  • 取消对 MFC 的依赖,使用 HWND 替代 CWnd,使用 win32 thread 函数而不是 MFC 的
  • 增加用户消息编号自定义,方法来自 CnComm

by itas109 on 2014-01-10 http://blog.csdn.net/itas109/article/details/18358297 https://github.com/itas109

  • 解决COM10以上端口无法显示的问题
  • 扩展可选择端口,最大值MaxSerialPortNum可以自定义
  • 添加QueryKey()和Hkey2ComboBox两个方法,用于自动查询当前有效的串口号。

by liquanhai on 2014-12-18

  • 增加一些处理措施,主要是对减少CPU占用率

by itas109 on 2016-05-07 http://blog.csdn.net/itas109 https://github.com/itas109

  • 修复每次打开串口发送一次,当串口无应答时,需要关闭再打开或者接收完数据才能发送的问题。 解决办法:在m_hEventArray中调整m_hWriteEvent的优先级高于读的优先级。CommThread(LPVOID pParam)函数中读写的位置也调换。 参考:http://zhidao.baidu.com/link?url=RSrbPcfTZRULFFd2ziHZPBwnoXv1iCSu_Nmycb_yEw1mklT8gkoNZAkWpl3UDhk8L35DtRPo5VV5kEGpOx-Gea
  • 修复停止位在头文件中定义成1导致SetCommState报错的问题,应为1对应的停止位是1.5。UINT stopsbits = ONESTOPBIT
  • switch(stopbits)和switch(parity)增加默认情况,增强程序健壮性

by itas109 on 2016-06-22 http://blog.csdn.net/itas109 https://github.com/itas109

  • 增加ReceiveStr方法,用于接收字符串(接收缓冲区有多少字符就接收多少字符)。 解决ReceiveChar只能接收单个字符的问题。

by itas109 on 2016-06-29 http://blog.csdn.net/itas109 https://github.com/itas109

  • 解决RestartMonitoring方法和StopMonitoring方法命令不准确引起的歧义,根据实际作用。 将RestartMonitoring更改为ResumeMonitoring,将StopMonitoring更改为SuspendMonitoring。
  • 增加IsThreadSuspend方法,用于判断线程是否挂起。
  • 改进ClosePort方法,增加线程挂起判断,解决由于线程挂起导致串口关闭死锁的问题。
  • 增加IsReceiveString宏定义,用于接收时采用单字节接收还是多字节接收

by itas109 on 2016-08-02 http://blog.csdn.net/itas109 https://github.com/itas109

  • 改进IsOpen方法,m_hComm增加INVALID_HANDLE_VALUE的情况,因为CreateFile方法失败返回的是INVALID_HANDLE_VALUE,不是NULL
  • 改进ClosePort方法:增加串口句柄无效的判断(防止关闭死锁);m_hWriteEvent不使用CloseHandle关闭
  • 改进CommThread、ReceiveChar、ReceiveStr和WriteChar方法中异常处理的判断,增加三种判断:串口打开失败(error code:ERROR_INVALID_HANDLE)、连接过程中非法断开(error code:ERROR_BAD_COMMAND)和拒绝访问(error code:ERROR_ACCESS_DENIED)
  • 采用安全函数sprintf_s和strcpy_s函数替换掉sprintf和strcpy
  • 改进QueryKey方法,用于查询注册表的可用串口值,可以搜索到任意的可用串口
  • 改进InitPort方法,串口打开失败,增加提示信息:串口不存在(error code:ERROR_FILE_NOT_FOUND)和串口拒绝访问(error code:ERROR_ACCESS_DENIED)
  • 加入viruscamp 取消对 MFC 的依赖
  • 改进InitPort方法,如果上次串口是打开,再次调用InitPort方法,关闭串口需要做一定的延时,否则有几率导致ERROR_ACCESS_DENIED拒绝访问,也就是串口占用问题
  • 初始化默认波特率修改为9600
  • 修复一些释放的BUG
  • 规范了一些错误信息,参考winerror.h -- error code definitions for the Win32 API functions
  • 删除SendData和RecvData方法

by itas109 on 2016-08-10 http://blog.csdn.net/itas109 https://github.com/itas109

  • 改进ReceiveStr方法,comstat.cbInQue = 0xcccccccc的情况(如串口异常断开),会导致RXBuff初始化失败

by itas109 on 2017-02-14 http://blog.csdn.net/itas109 https://github.com/itas109

  • 兼容ASCII和UNICODE编码
  • ReceiveStr函数中发送函数SendMessage的第二个参数采用结构体形式,包括portNr串口号和bytesRead读取的字节数,可以处理16进制的时候0x00截断问题
  • 精简不必要的函数SendData和RecvData
  • 尽量的取消对 MFC 的依赖,Hkey2ComboBox函数暂时保留
  • 其他小问题修改

by itas109 on 2017-03-12 http://blog.csdn.net/itas109 https://github.com/itas109

  • 增加宏定义_AFX,用于处理MFC的必要函数Hkey2ComboBox
  • 进一步去除MFC依赖,修改AfxMessageBox函数

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