074用vc实现多串口多线程工业控制

1、/ Write a string to the port/voierialPort:WriteToPort(BYTE bWriteBuffer, nWriteBufferSize)assert(m != 0);nSize = sizeof(bWriteBuffer)/sizeof(BYTE); m_nWriteBufferSize = nWriteBufferSize;for(i = 0 ; i m_Ports.StartMonitoring();启动监视线程 mVal();发送第一台设备数据命令CSerialPort m_Ports;nColtAddr,/这个用来存放当前设备地址。nColt

2、s;/这个用来存放当前缓冲区收到的字节数目 HANDLE m_pThread;/外部控制线程BYTE m_RecBuff1000;/接收缓冲区float fVal20;/处理解包内容，这里可以根据实际情况进行定义。void CmVal()HAddr,LAddr,m_Xnh; nHAdd,nLAdd;nHAdd = ExchangeAscII(nColtAddr4)&0 x0f); nLAdd = ExchangeAscII(nColtAddr&0 x0f); m_Xnh = nHAddnLAdd0 x520 x44;HAddr = ExchangeAscII(m_Xnh4)&0 x0f); L

3、Addr = ExchangeAscII(m_Xnh&0 x0f);BYTE OutBuff8 =0 x40,nHAdd,nLAdd,0 x52,0 x44,HAddr,LAddr,0 x0d; m_Ports.WriteToPort(OutBuff,8); cLastColtTime = CTime:GetCurrentTime(); nColtAddr+;if(nColtAddr 19)/19 define max addr numbers nColtAddr = 0;ASCII 码的一些简单变换，进行一下简单的封装，方便调用：UCmThread(LPVOID pParam)CView *

4、pView = (CView *)pParam;while(1)CTime cNowTime = CTime:GetCurrentTime(); tNow = cNowTime.GetTime();struct _timeb timebuffer;_ftime(&timebuffer);nNowMillSecond = litm;/tLast = cLastColtTime0.GetTime();if(tNow - tLast)*1000 + (nNowMillSecond - nMillSecond0) 800)pView-mVal();发送下一台设备要数据命令或

5、者进行其他的相关处理Sleep(100);发送串口数据命令，这里要根据外部设备的制定的通讯协议来进行。这次温度表采用的是 ASCII 的形式通讯。RAM,LPARAM 类型是多态性数据(polymorphic daype),在WIN32 中为 32 位，支持多种数据类型，根据需要自动适应，这样程序就有很强的适应性。再次这里理解成为BYTE 类型（与设备通讯协议保持一致，方便解包）。每当串口接收缓冲区内有一个字符的时候，就会产生一个M_RXCHAR 消息，触发munication 函数，下面可以根据的需要进行解包处理了；LONGmunication(RAM ch, LPARort)if(port

6、 = 1)m_RecBuffnColts += (BYTE)(char *)(ch); nColts+;if(nColts = 24)/这里根据通讯协议规定的发送定制要数据命令就会上传 24个字节的数据报文内容。这里可以根据不同外部设备进行不同的设置DataProsTemp(m_RecBuff);/处理解包nColts = 0;/缓冲区指针清 0，准备接收下一台设备数据 ResetBuffVal();/清空缓冲区内容mVal(); /发送下一台设备内容LONG Cmunication(RAM ch, LPARort)进行数据处理，BYTE CView:ExchangeAscII(BYTE bI

7、nput)BYTE bRef = 0;if(bInput 9)bRef = bInput+0 x37; elsebRef = bInput+0 x30; return bRef;BYTE CView:ExchangeAscIItoNormal(BYTE bInput)BYTE bRef = 0;if(bInput 0 x39) bRef = bInput-0 x37;elsebRef = bInput-0 x30; return bRef;数据解包处理，这里就必须根据外部设备定义的通讯协议来处理了。void CMy11View:DataProsTemp(BYTE m_Inbuff)nTempA

8、ddr = nColtAddr - 1; if(nTempAddr 4)&0 x0f); nLAdd = ExchangeAscIempAddr&0 x0f);if(m_Inbuff0 = 0 x40)if(m_Inbuff1 = nHAdd & m_Inbuff2 = nLAdd)if(m_Inbuff3 = 0 x52 & m_Inbuff4 = 0 x44)nzTemp5; float fTemp;nzTemp0 = m_Inbuff7; nzTemp1 = m_Inbuff8; nzTemp2 = m_Inbuff9; nzTemp3 = m_Inbuff10; for(i = 0 ; i 0 x39) nzTempi -= 0 x37;elsenzTempi -= 0 x30;fTemp=float(nzTemp1+(nzTemp04)+(nzTemp38)+(nzTemp2m_Ports0.InitPort(this,2,9600,N,8,1,EV_RXCHAR|EV_RXFLAG,1024)this-m_Ports0.StartMonitoring(); BufferVal(0);/Diandu Deviceif(this-m_Ports1.InitPort(this,4,1200,E,8,1,EV_RXCHAR|EV_RXFLAG,1024