FreeCalypso > hg > freecalypso-sw
annotate rvinterf/doc/rvinterf.usage @ 522:2c9c2b95ddec
FC version of l1_rf12.c compiles
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sun, 13 Jul 2014 07:48:14 +0000 |
parents | 5c75d84ffa81 |
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rev | line source |
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rvinterf/doc: started documenting the usage of rvinterf tools
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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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11 |
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12 Rvinterf is invoked just like rvtdump: |
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13 |
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14 rvinterf [options] /dev/ttyXXX |
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15 |
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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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19 |
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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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28 |
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29 -s pathname_for_socket |
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30 |
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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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36 |
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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. |