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authorSascha Hauer <s.hauer@pengutronix.de>2005-07-21 15:09:46 +0000
committerSascha Hauer <s.hauer@pengutronix.de>2005-07-21 15:09:46 +0000
commitf0cd9585a4dfb5e413afb354316936e4c5a5c601 (patch)
tree01d72db670781f67a7883396fcd6d90d92c8cc18
parentb5d8af82fc6891259232da08f2bc197d4b904c9f (diff)
downloadcanutils-f0cd9585a4dfb5e413afb354316936e4c5a5c601.tar.gz
- add longopt support
- add version info - add loop option for sending more than one message - take message data as integers rather than a string git-svn-id: https://iocaste.extern.pengutronix.de/svn/canutils/trunks/canutils-1.0-trunk@28 5fd5a299-6ef2-0310-aa18-8b01d7c39d8c
-rw-r--r--cansend.c102
1 files changed, 75 insertions, 27 deletions
diff --git a/cansend.c b/cansend.c
index d42cdcf..eced013 100644
--- a/cansend.c
+++ b/cansend.c
@@ -4,6 +4,7 @@
#include <string.h>
#include <signal.h>
#include <libgen.h>
+#include <getopt.h>
#include <sys/types.h>
#include <sys/socket.h>
@@ -11,6 +12,8 @@
#include <sys/ioctl.h>
#include <net/if.h>
+#include <can_config.h>
+
#include <socket-can/can.h>
extern int optind, opterr, optopt;
@@ -23,28 +26,55 @@ void sigterm(int signo)
void print_usage(char *prg)
{
- fprintf(stderr, "Usage: %s <can-interface> [Options] -i <identifier> <can-msg>\n", prg);
- fprintf(stderr, "Options: -f <family> (default PF_CAN = %d)\n", PF_CAN);
- fprintf(stderr, " -t <type> (default SOCK_RAW = %d)\n", SOCK_RAW);
- fprintf(stderr, " -p <proto> (default CAN_PROTO_RAW = %d)\n", CAN_PROTO_RAW);
- fprintf(stderr, " -v (verbose)\n");
+ fprintf(stderr, "Usage: %s <can-interface> [Options] <can-msg>\n"
+ "<can-msg> can consist of up to 8 bytes given as a space separated list\n"
+ "Options:\n"
+ " -i, --identifier=ID CAN Identifier\n"
+ " -f, --family=FAMILY Protocol family (default PF_CAN = %d)\n"
+ " -t, --type=TYPE Socket type, see man 2 socket (default SOCK_RAW = %d)\n"
+ " -p, --protocol=PROTO CAN protocol (default CAN_PROTO_RAW = %d)\n"
+ " -l send message infinite times\n"
+ " --loop=COUNT send message COUNT times\n"
+ " -v, --verbose be verbose\n"
+ " --version print version information and exit\n",
+ prg, PF_CAN, SOCK_RAW, CAN_PROTO_RAW);
}
+enum
+{
+ VERSION_OPTION = CHAR_MAX + 1,
+};
+
int main(int argc, char **argv)
{
int family = PF_CAN, type = SOCK_RAW, proto = CAN_PROTO_RAW;
struct sockaddr_can addr;
- int s, opt, ret, i;
+ int s, opt, ret, i, dlc = 0;
struct can_frame frame;
int verbose = 0;
- int num = 0;
+ int loopcount = 1, infinite = 0;
struct ifreq ifr;
signal(SIGTERM, sigterm);
signal(SIGHUP, sigterm);
- while ((opt = getopt(argc, argv, "f:t:p:vi:")) != -1) {
+ struct option long_options[] = {
+ { "help", no_argument, 0, 'h' },
+ { "identifier", required_argument, 0, 'i'},
+ { "family", required_argument, 0, 'f' },
+ { "protocol", required_argument, 0, 'p' },
+ { "version", no_argument, 0, VERSION_OPTION},
+ { "verbose", no_argument, 0, 'v'},
+ { "loop", required_argument, 0, 'l'},
+ { 0, 0, 0, 0},
+ };
+
+ while ((opt = getopt_long(argc, argv, "hf:t:p:vi:l", long_options, NULL)) != -1) {
switch (opt) {
+ case 'h':
+ print_usage(basename(argv[0]));
+ exit(0);
+
case 'f':
family = strtoul(optarg, NULL, 0);
break;
@@ -60,10 +90,19 @@ int main(int argc, char **argv)
case 'v':
verbose = 1;
break;
-
+ case 'l':
+ if(optarg)
+ loopcount = strtoul(optarg, NULL, 0);
+ else
+ infinite = 1;
+ break;
case 'i':
frame.can_id = strtoul(optarg, NULL, 0);
+ case VERSION_OPTION:
+ printf("cansend %s\n",VERSION);
+ exit(0);
+
case '?':
break;
@@ -83,8 +122,9 @@ int main(int argc, char **argv)
exit(-1);
}
- printf("interface = %s, family = %d, type = %d, proto = %d\n",
- argv[optind], family, type, proto);
+ if(verbose)
+ printf("interface = %s, family = %d, type = %d, proto = %d\n",
+ argv[optind], family, type, proto);
if ((s = socket(family, type, proto)) < 0) {
perror("socket");
return 1;
@@ -92,8 +132,10 @@ int main(int argc, char **argv)
addr.can_family = family;
strcpy(ifr.ifr_name, argv[optind]);
- ret = ioctl(s, SIOCGIFINDEX, &ifr);
- printf("ioctl: %d ", ret);
+ if( ioctl(s, SIOCGIFINDEX, &ifr) ) {
+ perror("ioctl");
+ return 1;
+ }
addr.can_ifindex = ifr.ifr_ifindex;
addr.can_id = frame.can_id;
@@ -102,23 +144,29 @@ int main(int argc, char **argv)
return 1;
}
- if (argv[optind+1] != NULL) {
- frame.can_dlc = strlen(argv[optind+1]);
- frame.can_dlc = frame.can_dlc > 8 ? 8 : frame.can_dlc;
- strncpy(frame.payload.data, argv[optind+1],8);
- } else {
- frame.can_dlc = 0;
- }
- printf("id: %d ",frame.can_id);
- printf("dlc: %d\n",frame.can_dlc);
- for(i = 0; i < frame.can_dlc; i++)
- printf("0x%02x ",frame.payload.data[i]);
- printf("\n");
+ for(i = optind + 1; i < argc; i++) {
+ frame.payload.data[dlc] = strtoul(argv[i], NULL, 0);
+ dlc++;
+ if( dlc == 8 )
+ break;
+ }
+ frame.can_dlc = dlc;
+
+ if(verbose) {
+ printf("id: %d ",frame.can_id);
+ printf("dlc: %d\n",frame.can_dlc);
+ for(i = 0; i < frame.can_dlc; i++)
+ printf("0x%02x ",frame.payload.data[i]);
+ printf("\n");
+ }
- num = 1;
- while (num--) {
+ while (infinite || loopcount--) {
ret = write(s, &frame, sizeof(frame));
+ if( ret == -1 ) {
+ perror("write");
+ break;
+ }
}
close(s);