Question

请各位高手帮忙解决VC++编写的上位机与单片机串口通信的问题

我是想用VC上位机的按钮控制单片机的发光二极管的亮灭的，但得不到像要的结果。貌似接收的数据不对。请各位高手帮忙解决。控件的部分程序如下void CLedDlg::OnOnCommMscomm1() { // TODO: Add your control notification handler code here VARIANT variant_inp; COleSafeArray safearray_inp; LONG len,k; BYTE rxdata[2048]; if(m_comm.GetCommEvent()==2) {  variant_inp=m_comm.GetInput();  safearray_inp=variant_inp;  len=safearray_inp.GetOneDimSize();  for(k=0;k<len;k++)   safearray_inp.GetElement(&k,rxdata+k);  binData.SetSize(len);//binData为CByteArray型全局变量  for(k=0;k<len;k++)//怎么把接收的数据变成CByteArray型变量放在binData中??  {   BYTE bt=*(int*)(rxdata+k);   binData.SetAt(k,bt);  } }}void CLedDlg::OnButton1() { // TODO: Add your control notification handler code here unsigned char chData[8]; LONG len,k; CString str; chData[1]=0x01; chData[2]=0xfe; len=binData.GetSize(); for(k=0;k<len;k++)  chData[0]+=binData.GetAt(k); if(GetDlgItem(IDC_BUTTON1)->GetWindowText(str),str=="led1亮") {  GetDlgItem(IDC_BUTTON1)->SetWindowText("led1灭");  chData[0] = chData[0] | chData[1] ;  } else {  GetDlgItem(IDC_BUTTON1)->SetWindowText("led1亮");  chData[0] = chData[0] & chData[2] ; } binData.RemoveAll(); binData.Add(chData[0]); COleVariant var(binData); m_comm.SetOutput(var);}

Answer 1

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