可自动校准的时钟(PC)

time(&rawtime);
timeinfo=localtime(&rawtime);
timeArray[6]='a';
timeArray[5]=(timeinfo->tm_hour)/10;
timeArray[4]=(timeinfo->tm_hour)%10;
timeArray[3]=(timeinfo->tm_min)/10;
return 0;
setDCB(dcb);
if (!SetCommState(hCom, &dcb)) //DCB绑定失败返回
return 0;
if (!SetupComm(hCom,1024,1024))//设置串口读写缓冲区[1024]byte 失败返回
return 0;
timeouts.ReadTotalTimeoutMultiplier=500;
timeouts.ReadTotalTimeoutConstant=5000;
timeouts.WriteTotalTimeoutMultiplier=500;
timeouts.WriteTotalTimeoutConstant=2000;
if(buf[0]==52)
{
getSysTime();
sendTime();
}
//printf("%s",buf);
}
HANDLE openCom()
{
HANDLE hCom;
hCom=CreateFile("COM1",
GENERIC_READ|GENERIC_WRITE,
WriteFile(hCom,c,1,&dwWrite,NULL);
}
void sendTime()
{
//sendData(&timeArray[6]);
for(int i=0;i<6;i++)
{
sendData(&timeArray[i]);
//printf("%d ",timeArray[i]);
while (1)
{
readData();
}
}
}
printf("Send time success!\n");
}
void readData()
{
unsigned char buf[128]={0};
DWORD dwRead;
if(!ReadFile(hCom,buf,1,&dwRead, NULL))
return;
timeArray[2]=(timeinfo->tm_min)%10;
timeArray[1]=(timeinfo->tm_sec)/10;
timeArray[0]=(timeinfo->tm_sec)%10;
}
void sendData(unsigned char* c)
{
DWORD dwWrite;
//PurgeComm(hCom, PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR);
//DWORD ComWriteReturn;
//WriteFile(hCom,buf,32,&ComWriteReturn,NULL); //将buf内的数据写入串口32字节
return timeouts;
}
void setDCB(DCB dcb)
{
dcb.BaudRate = CBR_9600; //波特率设置19200
dcb.ByteSize = 8; //数据位8位
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT; //1个停止位
{
return 0;
}
COMMTIMEOUTS timeouts=getTimeout(); //串口超时结构体设置
if(!SetCommTimeouts(hCom,&timeouts)) //与串口绑定 失败返回
return 0;
DCB dcb;
if(!GetCommState(hCom,&dcb)) //获取当前DCB
dcb.fBinary=1;
dcb.fParity=0;
}
int main()
{
getSysTime();
hCom=openCom();
unsigned char buf[128]; //要传输串口数据缓冲区
if(hCom==(HANDLE)-1)//打开串口失败返回
#include "windows.h"
#include "stdio.h"
#include <time.h>
HANDLE hCom;
unsigned char timeArray[7];
void getSysTime()
{
time_t rawtime;
struct tm* timeinfo;
0,
NLL);
return hCom;
}
COMMTIMEOUTS getTimeout()
{
COMMTIMEOUTS timeouts; //串口超时结构体设置
timeouts.ReadIntervalTimeout=1000; //填充TimeOuts