sven/can-utils
1
0
Fork 0
mirror of https://github.com/linux-can/can-utils.git synced 2026-09-23 00:21:14 +02:00
Code Issues Packages Projects Releases Wiki Activity

candump: add option -e to dump error messages in human readable format

Browse Source 
If "candump" is called with the option "-e", the error messages are
dumped in human readable format:

  # candump -e any,0:0,#FFFFFFFF
  ...
  can0  20000088  [8] 00 00 80 19 00 00 00 00   ERRORFRAME
        protocol-violation{{error-on-tx}{acknowledge-slot}}
        bus-error
        error-counter{tx{128}rx{97}}
  ...
  can0  2000008C  [8] 00 08 80 19 00 00 00 00   ERRORFRAME
        controller-problem{tx-error-warning}
        protocol-violation{{error-on-tx}{acknowledge-slot}}
        bus-error
        error-counter{tx{128}rx{97}}

"candump" actually calles a library function snprintf_can_error_frame()
to do the formatting. It could be used for other purposes as well.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be>
This commit is contained in:
Wolfgang Grandegger
2011-02-14 15:49:27 +00:00
parent c9e79e55c3
commit 796475677a
3 changed files with 199 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
candump.c
+6 -1
View File
@@ -121,6 +121,7 @@ void print_usage(char *prg)
fprintf(stderr, " -n <count> (terminate after receiption of <count> CAN frames)\n");
fprintf(stderr, " -r <size> (set socket receive buffer to <size>)\n");
fprintf(stderr, " -d (monitor dropped CAN frames)\n");
fprintf(stderr, " -e (dump CAN error frames in human-readable format)\n");
fprintf(stderr, "\n");
fprintf(stderr, "Up to %d CAN interfaces with optional filter sets can be specified\n", MAXSOCK);
fprintf(stderr, "on the commandline in the form: <ifname>[,filter]*\n");
@@ -235,7 +236,7 @@ int main(int argc, char **argv)
last_tv.tv_sec = 0;
last_tv.tv_usec = 0;
while ((opt = getopt(argc, argv, "t:ciaSs:b:B:u:ldLn:r:h?")) != -1) {
while ((opt = getopt(argc, argv, "t:ciaSs:b:B:u:ldLn:r:he?")) != -1) {
switch (opt) {
case 't':
timestamp = optarg[0];
@@ -263,6 +264,10 @@ int main(int argc, char **argv)
view |= CANLIB_VIEW_SWAP;
break;
case 'e':
view |= CANLIB_VIEW_ERROR;
break;
case 's':
silent = atoi(optarg);
if (silent > SILENT_ON) {