| #!/usr/bin/env python |
| # |
| # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Mock the N1914A power meter. |
| |
| This program is mainly for developing software locally without physically have |
| a N1914A power meter. A local TCP server that simulate the behavior of a N1914A |
| will be started. |
| """ |
| |
| import logging |
| |
| from scpi_mock import MockServerHandler, MockTestServer |
| |
| |
| def SetupLookupTable(): |
| # Abbreviation for better readability |
| AddLookup = MockServerHandler.AddLookup |
| |
| # Responses for normal commands |
| NORMAL_ERR_RESPONSE = '+0,"No error"\n' |
| NORMAL_ESR_REGISTER = '+0\n' |
| NORMAL_OPC_RESPONSE = '+1\n' |
| AddLookup(r'\*CLS', None) |
| AddLookup(r'\*OPC\?', NORMAL_OPC_RESPONSE) |
| AddLookup(r'\*ESR\?', NORMAL_ESR_REGISTER) |
| AddLookup(r'SYST:ERR\?', NORMAL_ERR_RESPONSE) |
| # Identification |
| MODEL_NAME = 'Agilent Technologies,N1914A,MY50001187,A2.01.06\n' |
| MOCK_MAC_ADDRESS = '"00:30:d3:20:54:64"\n' |
| AddLookup(r'\*IDN\?', MODEL_NAME) |
| AddLookup(r'SYST:COMM:LAN:MAC\?', MOCK_MAC_ADDRESS) |
| # Measurement format related command |
| AddLookup(r'FORM ASCii', None) |
| AddLookup(r'FORM REAL', None) |
| # Measurement speed related command |
| AddLookup(r'SENSe\d:MRATe NORMal', None) |
| AddLookup(r'SENSe\d:MRATe DOUBle', None) |
| AddLookup(r'SENSe\d:MRATe FAST', None) |
| # Trigger related command |
| AddLookup(r'TRIGger\d:SOURce IMMediate', None) |
| AddLookup(r'INITiate\d:CONTinuous ON', None) |
| # Range related command |
| AddLookup(r'SENSe\d:POWer:AC:RANGe:AUTO \d', None) |
| AddLookup(r'SENSe\d:POWer:AC:RANGe \d', None) |
| # Frequency related command |
| AddLookup(r'SENSe\d:FREQuency [\d\.]+', None) |
| # Average related command |
| AddLookup(r'SENSe\d:AVERage:STATe \d', None) |
| AddLookup(r'SENSe\d:AVERage:COUNt \d', None) |
| # Fetch command in binary format |
| # FETCH_EXPECTED_RESPONSE is the IEEE 754 64 bit floating |
| # point representation of -65.05119874255999 |
| FETCH_EXPECTED_RESPONSE = str(bytearray([192, 80, 67, 70, 215, 23, 57, 14])) |
| AddLookup(r'FETCh\d?', FETCH_EXPECTED_RESPONSE + '\n') |
| # Other command |
| AddLookup(r'SENSe\d:CORRection:GAIN\d:STATe \d', None) |
| |
| if __name__ == '__main__': |
| logging.basicConfig(level=logging.INFO) |
| SetupLookupTable() |
| # Starts the server |
| SERVER_PORT = 5025 |
| # pylint: disable=E1101 |
| MockTestServer(('0.0.0.0', SERVER_PORT), MockServerHandler).serve_forever() |
