scope.c

实时linux RTAI 下的如何使用RTFIFO代码

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>

static int end;
static void endme(int dummy)
{
	end=1;
}

int main(int argc, char * argv[])
{
	int fifo, counter;
	float sin_value;
	if ((fifo = open("/dev/rtf0", O_RDONLY)) < 0) {
		fprintf(stderr, "Error opening /dev/rtf0\n");
		exit(1);
	}
	signal(SIGINT, endme);
	while (!end) {
		read(fifo, &counter, sizeof(counter));
		read(fifo, &sin_value, sizeof(sin_value));
		printf(" Counter : %d Seno : %f \n", counter, sin_value);
	}
	return 0;
}