Sorry, my mistake. The simulation file was corrupted. It shows correct voltages after I redrew the circuit. it was posted in my previous post and the post was updated.I think the problem is shoot through. Likely, you enable the right FETs of the H Bridge, which you can do with 2 direction inputs. However, you also need an enable FET. This is because without waiting a bit before applying power to the the H Bridge FETs, the wrong FETs can be activated during the switch change. Look into the TLE 5205-2, a 5 amp H bridge that won't switch until it is safe to do so. It still has an enable, but you can continuously enable it without fear of destroying itself. I used one in a recent project, and it worked at quite high speed with no need to switch the enable pin. See datasheet:https://www.infineon.com/dgdl/Infin...n.pdf?fileId=db3a30431f848401011fc747c7a0797f
Did you decide the RF Transreceiver ? XBee ?