Thanks Darrel

Well I only have 1 pin free but will use only 1 sensor then

As i'm polling with HSER several AD value's and I/O if was wondering to speed up the
polling if it should not be possible to exit the loop when count_remain is not finished yet
and send meanwhile the previous temperature value as reply to the serial poll for temperature

once count_remain is 0 then update the temp value

should this be done by an interupt routing when count remain = 0 ?