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Added -f option to filter only on the CAN-ID and not on the content.

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This can be useful when the timestamp cyle needs to be displayed.
This commit is contained in:
Oliver Hartkopp
2008-07-10 10:59:37 +00:00
parent af472581eb
commit f33075946d
1 changed files with 13 additions and 6 deletions
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cansniffer.c
+13 -6
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@@ -118,13 +118,14 @@ extern int optind, opterr, optopt;
static int running = 1; static int running = 1;
static int clearscreen = 1; static int clearscreen = 1;
static int notch = 0; static int notch;
static int filter_id_only;
static long timeout = TIMEOUT; static long timeout = TIMEOUT;
static long hold = HOLD; static long hold = HOLD;
static long loop = LOOP; static long loop = LOOP;
static unsigned char binary = 0; static unsigned char binary;
static unsigned char binary_gap = 0; static unsigned char binary_gap;
static unsigned char color = 0; static unsigned char color;
void rx_setup (int fd, int id); void rx_setup (int fd, int id);
void rx_delete (int fd, int id); void rx_delete (int fd, int id);
@@ -195,7 +196,6 @@ int main(int argc, char **argv)
long currcms = 0; long currcms = 0;
long lastcms = 0; long lastcms = 0;
unsigned char quiet = 0; unsigned char quiet = 0;
int opt, ret; int opt, ret;
struct timeval timeo, start_tv, tv; struct timeval timeo, start_tv, tv;
struct sockaddr_can addr; struct sockaddr_can addr;
@@ -210,7 +210,7 @@ int main(int argc, char **argv)
for (i=0; i < 2048 ;i++) /* default: check all CAN-IDs */ for (i=0; i < 2048 ;i++) /* default: check all CAN-IDs */
do_set(i, ENABLE); do_set(i, ENABLE);
while ((opt = getopt(argc, argv, "m:v:r:t:h:l:qbBc")) != -1) { while ((opt = getopt(argc, argv, "m:v:r:t:h:l:qbBcf")) != -1) {
switch (opt) { switch (opt) {
case 'm': case 'm':
sscanf(optarg, "%x", &mask); sscanf(optarg, "%x", &mask);
@@ -254,6 +254,10 @@ int main(int argc, char **argv)
color = 1; color = 1;
break; break;
case 'f':
filter_id_only = 1;
break;
case '?': case '?':
break; break;
@@ -371,6 +375,9 @@ void rx_setup (int fd, int id){
txmsg.msg_head.nframes = 1; txmsg.msg_head.nframes = 1;
U64_DATA(&txmsg.frame) = (__u64) 0xFFFFFFFFFFFFFFFFULL; U64_DATA(&txmsg.frame) = (__u64) 0xFFFFFFFFFFFFFFFFULL;
if (filter_id_only)
txmsg.msg_head.flags |= RX_FILTER_ID;
if (write(fd, &txmsg, sizeof(txmsg)) < 0) if (write(fd, &txmsg, sizeof(txmsg)) < 0)
perror("write"); perror("write");
}; };