The transceiver module expects an `ieee802154_packet_t` instead of a
`radio_packet_t` if the device supports the IEEE 802.15.4 packet format.
This commit fixes the corresponding transceiver shell command for
`txtsnd` to set destination address (short address mode), payload, and
length accordingly.
Compare #708.
Now the tokenization of an input line is done by the shell itself. You
may quote arguments with `"..."`. Empty arguments, supplied by `""` are
preserved. Spaces in between arguments are squasheds; spaces inside
quotes are preserved.
You cannot partially quote an argument. You must not use
- `cmd "abc`,
- `cmd abc"def"`, or
- `cmd "abc"def`.
