def setBusy(self, busy):
        '''
        Called by the driver to indicate it is busy.

        @param busy: True when busy, false when idle
        @type busy: bool
        '''
        self._busy = busy
        if not self._busy:
            self._pump()
def setBusy ( self , busy ) : self . _busy = busy if not self . _busy : self . _pump ( )
Called by the driver to indicate it is busy.

        @param busy: True when busy, false when idle
        @type busy: bool