0 is a valid channel on some transceivers (e.g. sub-GHz IEEE802.15.4 band) UNASSIGNED_CHANNEL is set to INT_MIN by default, but can be overridden via CFLAGS.
0 is a valid channel on some transceivers (e.g. sub-GHz IEEE802.15.4 band) UNASSIGNED_CHANNEL is set to INT_MIN by default, but can be overridden via CFLAGS.