energy = None
class SimulatedEnergy(Writable):
    def getName(self):
        return "Energy"

    def write(self, value):
        put(value)

    def put(self, value, timeout = None):
        global energy
        energy = value

    def close():
        pass


class SimulatedEnergyReadback(Readable):
    def getName(self):
        return "Energy Readback"

    def read(self):
        global energy
        return energy;
    
    def get(self):
        return read()

    def close():
        pass

sim_energy = SimulatedEnergy()
sim_energy_readback = SimulatedEnergyReadback()