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annotate doc/Test-system-interface @ 27:841dd03d5c85

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fc-rfcal-vcxo: almost done
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 22 May 2017 23:10:34 +0000
parents bd62be88259d
children d348d47f8a04
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1 The Test System Interface Daemon (TSID) will provide a connection-oriented
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2 (SOCK_STREAM) UNIX domain local socket at /tmp/fc_rftest_socket, and will speak
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3 an ASCII line-based command-response protocol on this socket. All command and
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4 response lines will end with \n only (no \r), and each TSID response including
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5 the initial greeting on connection establishment will begin with a '+' or '-'
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6 character to indicate OK or error, respectively, like in POP3.
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7
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8 The following commands are currently defined:
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9
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10 vcxo-cal-setup band arfcn
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11
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12 This command is sent to the TSID to prepare the RF test system for the VCXO
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13 calibration procedure. The first argument after the command keyword is the
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14 band to be used (850, 900, 1800 or 1900) and the second argument is the ARFCN
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15 in that band on which the DUT will be transmitting.
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16
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17 freq-meas hint
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18
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19 This command directs the RF test system to take a frequency offset measurement
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20 (vcxo-cal-setup must have been performed previously) and report it back to the
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21 client in the response line. The hint argument after the freq-meas keyword will
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22 be sent by the VCXO calibration program (fc-rfcal-vcxo) to tell the RF test
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23 system what kind of frequency offset measurement is being made, i.e., which step
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24 in the VCXO calibration sequence is being performed; the hint keywords remain
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25 to be defined.
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26
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27 signal-gen-setup band
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28
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29 This command is sent to the TSID to prepare the RF test system for tests in
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30 which the latter acts as a signal generator. The argument after the command
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31 keyword is the band number (850, 900, 1800 or 1900), and it selects the
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32 downlink frequency band in which the signal generator will need to operate.
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33
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34 signal-gen-sine arfcn offset level
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35
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36 This command directs the RF test system to turn on its signal generator and put
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37 out a pure sine wave at the frequency corresponding to the specified ARFCN (in
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38 the downlink band previously selected with signal-get-setup) plus the specified
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39 offset in kHz (-67 or +67 with TI's Rx path calibration procedures), and at the
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40 specified Tx power level in dBm.
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41
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42 signal-gen-off
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43
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44 Turn off the signal generator.
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45
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46 The commands for Tx power level calibration remain to be defined.