void dg_cli(int socketfd,struct sockaddr_in *server_address,int server_len)
{
int n=0;
int offset=0;
int i;
char test[]="this wenxu test";
void *sharemem=NULL;
int shmid;
int msgid;
while(n<10)
{
memset(msg_sbuf.mtext,0,sizeof(msg_sbuf.mtext));
sprintf(msg_sbuf.mtext,"%s %d",test,n);
//printf("the data is %d\n",n);
msg_sbuf.mtype=2;
msg_sbuf.offset=strlen(msg_sbuf.mtext);
struct msghdr msg;
struct iovec iov[1];
bzero(&msg, sizeof(msg));
msg.msg_name = server_address; /* attention this is a pointer to void* type */
msg.msg_namelen = server_len;
iov[0].iov_base = &msg_sbuf;
iov[0].iov_len = sizeof(msg_sbuf);
msg.msg_iov = iov;
msg.msg_iovlen = 1;
if (sendmsg(socketfd, &msg, 0) == -1)
perror("sendmsg bad");
printf("send buf ok %s \n",msg_sbuf.mtext);
n++;
sleep(1);
}
n=0;
while(n<10)
{
GetFifo();
if((shmid=shmget((key_t)654321,(size_t)4096,0600|IPC_CREAT))==-1)
{
perror("can not get share mem");
exit(1);
}
if((sharemem=shmat(shmid,NULL,0))==NULL)
{
perror("can mount the share mem");
shmctl(shmid,IPC_RMID,0);
exit(1);
}
memcpy(sharemem+offset,&msg_sbuf2,sizeof(msg_sbuf2));
//printf("child input data and data hhhhhhhh is : %s \n",sharemem+offset);
offset+=sizeof(msg_sbuf2);
n++;
}
if((msgid=msgget((key_t)0x12345,0666|IPC_CREAT))==-1)
{
perror("can not msgget");
void USART2_IRQHandler(void)
{
uint8_t data;
int status;
if (USART_GetITStatus(USART2,USART_IT_TXE)!= RESET)
{
LED_On();
status = GetFifo( &data);
if(!status)
{
USART_ITConfig(USART2,USART_IT_TXE,DISABLE);
return;
}
//GetFifo( &data);
USART_SendData(USART2, data);
}
}