串口类CSerialPort的简单用法
简单用法:
1.定义成员:
CSerialPort m_SerialPort;
2.初始化:
m_SerialPort.SetBufferSize(1024,1024);
m_SerialPort.SetWnd(m_hWnd);
m_SerialPort.SetNotifyNum(DEF_IN_BYTE_SIZE);
if (m_SerialPort.IsOpen())
{
m_SerialPort.Close();
}
m_SerialPort.Open(1,"9600,O,8,1");
m_SerialPort.ClearInputBuffer();
m_SerialPort.ClearOutputBuffer();
3.接收数据:
a.ON_MESSAGE(ON_COM_RECEIVE, RS232OnReceive)
b.RS232OnReceive函数体:
}m_SerialPort.Lock();
byte _RxData_Array[DEF_IN_BYTE_SIZE];
ZeroMemory(_RxData_Array,DEF_IN_BYTE_SIZE);
int nReceivedLength=0;
byte TempByte[DEF_IN_BYTE_SIZE];
ZeroMemory(TempByte,DEF_IN_BYTE_SIZE);
int _BufferLength=0;
// BOOL bFound0x51=FALSE;//数据头是否到来
DWORD _TickCount=GetTickCount();
while (nReceivedLength<DEF_IN_BYTE_SIZE)
{
if ((GetTickCount()-_TickCount)>50)//防止接收不到数据的死循环
{
TRACE("接收数据超时.\n");
break;
_BufferLength=m_SerialPort.Read(TempByte,1);
// if (!bFound0x51)//若还没有得到数据头
// {
// if (TempByte[0]==0x51)//判断数据头是否到来
// {
// bFound0x51=TRUE;
// }
// }
//
// if (!bFound0x51)
// {
// TRACE("0x%02X:等待数据头到来.\n",TempByte[0]);
// continue;
// }
if (_BufferLength>0)
{
memcpy(_RxData_Array+nReceivedLength,TempByte,_BufferLength);
nReceivedLength+=_BufferLength;
}
}
m_SerialPort.ClearInputBuffer();
m_SerialPort.Unlock();
4.发送数据:
m_SerialPort.Lock();
m_SerialPort.Write(TxBuffer,9);
m_SerialPort.Unlock();
出处:https://www.cnblogs.com/wqvbjhc/
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