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shell: check if a preferred parent exists before showing status

This commit is contained in:
Niclas Finne 2018-05-04 09:09:15 +02:00
parent fe1320e39e
commit c176103aae
1 changed files with 6 additions and 2 deletions
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8
os/services/shell/shell-commands.c
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@ -173,8 +173,12 @@ PT_THREAD(cmd_rpl_status(struct pt *pt, shell_output_func output, char *args))
SHELL_OUTPUT(output, "-- State: %s\n", rpl_state_to_str(curr_instance.dag.state));
SHELL_OUTPUT(output, "-- Preferred parent: ");
shell_output_6addr(output, rpl_neighbor_get_ipaddr(curr_instance.dag.preferred_parent));
SHELL_OUTPUT(output, " (last DTSN: %u)\n", curr_instance.dag.preferred_parent->dtsn);
if(curr_instance.dag.preferred_parent) {
shell_output_6addr(output, rpl_neighbor_get_ipaddr(curr_instance.dag.preferred_parent));
SHELL_OUTPUT(output, " (last DTSN: %u)\n", curr_instance.dag.preferred_parent->dtsn);
} else {
SHELL_OUTPUT(output, "None\n");
}
SHELL_OUTPUT(output, "-- Rank: %u\n", curr_instance.dag.rank);
SHELL_OUTPUT(output, "-- Lowest rank: %u (%u)\n", curr_instance.dag.lowest_rank, curr_instance.max_rankinc);
SHELL_OUTPUT(output, "-- DTSN out: %u\n", curr_instance.dtsn_out);