FreeCalypso > hg > freecalypso-tools

annotate rvinterf/doc/rvinterf.usage @ 1011:6d9b10633f10

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents e7502631a0f9
children
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1 Rvinterf (the specific program by this name) is an extended version of rvtdump
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2 (see rvtdump.usage) that decodes and dumps and/or logs any and all output
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3 generated by the firmware running on the target just like rvtdump, but also
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4 creates a local UNIX domain socket on the host machine to which "client"
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5 programs can connect. "Client" programs connecting to rvinterf via this local
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6 socket interface can:
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7
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8 1. Receive copies of selected RVTMUX packets coming from the target;
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9
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10 2. Send arbitrary RVTMUX packets toward the target.
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12 Rvinterf is invoked just like rvtdump:
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14 rvinterf [options] /dev/ttyXXX
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16 The following options have the same meaning as in rvtdump, see rvtdump.usage
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17 for the details: -b, -B, -d and -l. The only difference is that -b without -l
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18 is potentially useful and thus allowed.
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20 Additional rvinterf options which don't exist in rvtdump are:
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21
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22 -n
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23
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24 Suppress the output on stdout like -b, but don't fork into background.
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25 This option is passed by "client" programs when they invoke rvinterf
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26 behind the scenes instead of connecting to an already-running rvinterf
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27 instance.
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29 -s pathname_for_socket
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31 By default the local UNIX domain socket created by rvinterf is bound to
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32 /tmp/rvinterf_socket; this option allows any other pathname to be
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33 specified.
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34
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35 -S <file descriptor number>
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37 This option is not meant for direct use by human users. It is passed
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38 by "client" programs when they invoke rvinterf behind the scenes with
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39 an unnamed and unbound socket pair instead of conecting to an already-
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40 running rvinterf instance.
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41
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42 -w number_in_seconds
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43
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44 It has been discovered experimentally that if an RVTMUX packet is sent
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45 to a target when the latter is in the "deep sleep" state, the target
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46 wakes up, but the packet that was sent is not received correctly. TI's
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47 reference fw seems to wait for 10 s after last serial activity before
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48 falling into deep sleep (provided that all other conditions for that
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49 sleep mode are satisfied), hence the following workaround has been
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50 implemented in rvinterf: if a packet is to be sent to the target and
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51 more than a set time has elapsed since the last transmitted packet, the
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52 packet is preceded by a "wake-up shot" of 64 0 bytes (outside of a
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53 packet, ignored by the fw) and a 100 ms pause. This hack is not pretty,
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54 but it appears to do its job of making RVTMUX communication with target
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55 firmwares reliable.
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56
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57 The -w option changes the elapsed time threshold at which the "wake-up
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58 shot" is sent; the default is 7 s. Specify -w 0 to disable this hack
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59 altogether.