X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/4cf24de229090b1ab6279570a564d224e13dd706..786c7d54e8d820e89997e507c29ea716c0d55fd9:/lincan/utils/send.c

diff --git a/lincan/utils/send.c b/lincan/utils/send.c
new file mode 100644
index 0000000..c8373b1
--- /dev/null
+++ b/lincan/utils/send.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+
+#include "../include/can.h"
+#define MAXL 40
+
+int main(void)
+{
+	int i=0, fd=0, ret=0, count=0;
+	char loop=0;
+	unsigned long bits;
+	char ch, transmission[MAXL+1], specialfile[MAXL+1]="/dev/can0", emptystring[MAXL+1]="", buf[MAXL+1];
+	char remote[MAXL+1];
+	struct canmsg_t message;
+
+	printf("\nThis program allows you to send  a stream of Can messages.\n");
+	printf("Please answer the following questions:\n\n");
+
+//		message.flags = 0;
+	message.flags |= MSG_EXT;  //hard code EXT for now
+
+	printf("From wich device file would you like to send the message?\n");
+	printf(specialfile);
+	*buf='\0';
+	fgets(buf,MAXL,stdin);
+	buf[strcspn(buf,"\n")]='\0';
+	if(*buf)
+		strncpy(specialfile,buf,MAXL);
+	specialfile[MAXL]='\0';
+	printf("Enter the starting Message ID ");
+	scanf("%lx",&message.id);
+	printf("Enter the Message Length ");
+	scanf("%d",&message.length);
+	for (i=0; i<message.length; i++) {
+		printf("Enter data byte [%d] ",i);
+		scanf("%x",(int *)&message.data[i]);
+	}
+
+	fd=open(specialfile,O_RDWR);
+	if (fd<0) {
+		printf("Error opening %s\n",specialfile);
+		return -1;
+	}
+
+	bits=0;
+	while(1) {
+		message.flags = MSG_EXT;
+		message.id++;
+		message.length %= 8;
+		message.length++;
+		bits += 8*(4+message.length);
+		memcpy(message.data,&bits,sizeof(bits));
+		ret=write(fd, &message, sizeof(struct canmsg_t));
+		if (ret<0)
+			printf("Error sending message from %s\n",specialfile);
+	}
+
+	if (close(fd)) {
+		printf("Error closing %s\n",specialfile);
+		return -1;
+	}
+
+	return 0;
+}