您需要有支持 API 或 SDK 的 USB 数据传输线(也称为 USB 数据连接线),然后使用以下代码:
void CU2uDlg::OnOK()
{
BYTE buf[65530];
LPU2URET pU2uRet;
BOOL bRet;
int ret;
CString msgstr;
ret = u2u_open();
if (ret == -1){
AfxMessageBox("Open U2U device Success.");
}else{
msgstr.Format("Open U2U device fail,return:%d", ret);
AfxMessageBox(msgstr);
return;
}
//send data
bRet = u2u_SendData(buf, 65530, ret);
if(!bRet)
{
msgstr.Format("Send data error,return:%d", ret);
AfxMessageBox(msgstr);
return;
}
//receive data
while (1){
bRet = u2u_RecvData(recvData, dataLen, ret);
if( !bRet )
{
msgstr.Format("Receive data error,return:%d", ret);
AfxMessageBox(msgstr);
u2u_close();
return;
}else{
break;
}
}
u2u_close();
}
See:
Reference1, Reference2