READCHAN
retval = radio->get_register(radio, READCHAN);
chan = radio->registers[READCHAN] & READCHAN_READCHAN;
bler = (radio->registers[READCHAN] &
bler = (radio->registers[READCHAN] &
bler = (radio->registers[READCHAN] &
bler = (radio->registers[READCHAN] &
bler = (radio->registers[READCHAN] &
bler = (radio->registers[READCHAN] &