1 #!/usr/bin/env python 2 # 3 # Copyright 2016 - The Android Open Source Project 4 # 5 # Licensed under the Apache License, Version 2.0 (the "License"); 6 # you may not use this file except in compliance with the License. 7 # You may obtain a copy of the License at 8 # 9 # http://www.apache.org/licenses/LICENSE-2.0 10 # 11 # Unless required by applicable law or agreed to in writing, software 12 # distributed under the License is distributed on an "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 # See the License for the specific language governing permissions and 15 # limitations under the License. 16 17 from acts.controllers.relay_lib.relay import RelayState 18 from acts.controllers.relay_lib.usb_relay_board_base import UsbRelayBoardBase 19 from pylibftdi import BitBangDevice 20 21 22 class RdlRelayBoard(UsbRelayBoardBase): 23 def set(self, relay_position, value): 24 """Returns the current status of the passed in relay. 25 26 Args: 27 relay_position: Relay position. 28 value: Turn_on or Turn_off the relay for the given relay_position. 29 """ 30 with BitBangDevice(self.device) as bb: 31 if value == RelayState.NO: 32 bb.port |= self.address[relay_position] 33 else: 34 bb.port &= ~(self.address[relay_position]) 35 self.status_dict[relay_position] = value 36
