LITTLE KNOWN FACTS ABOUT SCHEMA PRO.

As being the 'is_tx = 0' can't be moved in the whole handler because of a doable race among the delay in switching to STATE_RX_AACK_ON along with a new interrupt, we introduce an intermediate 'was_tx' boolean just for this function. There's no Fixes tag applying below, a lot of changes have already been created on this space and The difficulty type