#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>   //      gettimeofday
#include <sys/stat.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>

struct display_param{
	int freq;
        int dbm1;
        int dbm2;
        int bw;
        int power;
        int bitrate;
};
int main()
{
	struct display_param param;
	int fd_param;
	char *buffer_param;
	char dbm1[5];
	char dbm2[5];
	char dbm3[5];
	
	fd_param = shm_open("/param.txt",O_RDWR|O_CREAT|O_EXCL,0777);
        if(fd_param < 0){
               fd_param = shm_open("/param.txt",O_RDWR,0777);
        }else
                ftruncate(fd_param,4096);
         buffer_param= mmap(NULL,4096,PROT_READ|PROT_WRITE,MAP_SHARED,fd_param,0);
	while(1){	 
		memcpy(dbm1,buffer_param,4);
		memcpy(dbm2,buffer_param+8,6);
		//memcpy(dbm3,buffer_param+12,5);
		param.dbm1=atoi(dbm1);
		param.dbm2=atoi(dbm2);
		 
	 	printf("dbm1: %s\n",dbm1);
		printf("dbm2: %s\n",dbm2);
		//printf("read: %s\n",dbm3);
	 	printf("param.dbm1: %d\n",param.dbm1);
		printf("param.dbm2: %d\n",param.dbm2);

	}
}