DWORD WINAPI ThreadWrite(LPVOID lpParameter)//进程1
{
char outputData[100];//输出数据缓存
FILE * outfile;
char *str = "1234567812345678";
DWORD dwErrorFlags;
COMSTAT ComStat;
int c = 0;
int rc = 0;
BOOL bWriteStat;
OVERLAPPED m_osWrite;
outfile = fopen("E:/ziku/ziku.bin", "rb" );
if( hCom==INVALID_HANDLE_VALUE )
{
puts("打开串口失败");
return 0;
}
DWORD strLength = 0;
PurgeComm(hCom,PURGE_TXCLEAR|PURGE_RXCLEAR);
while(rc = fread(outputData,sizeof(unsigned char),16,outfile))
{
PurgeComm(hCom,PURGE_TXCLEAR|PURGE_RXCLEAR); //清空缓冲区
bWriteStat = WriteFile(hCom,outputData,rc,&strLength,&m_osWrite); // 串口发送字符串
if(!bWriteStat)
{
if(GetLastError()==ERROR_IO_PENDING)
{
WaitForSingleObject(m_osWrite.hEvent,10000);
}
}
Sleep(100);
}
return 0;
}
这样写用虚拟串口发送给串口助手时没有问题的,但是发送给单片机数据丢失特别严重望大佬指点。