Turn serial RX interrupts on, so the system doesn't lock up while reading.
Turn serial RX interrupts on, so the system doesn't lock up while reading.

rvedam/Mezzano,froggey/Mezzano,rvedam/Mezzano,varjagg/Mezzano,AugustusHuang/Mezzano,froggey/Mezzano,varjagg/Mezzano,AugustusHuang/Mezzano