| 00:00.17 | *** join/#maemo atk (Arch-TK@ircpuzzles/staff/Arch-TK) |
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| 00:21.54 | Vajb | is it possible to make n900 lock the screen when i close hwkbd? |
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| 00:34.14 | Oksana | Does it send a dbus signal when hwkbd is being closed? |
| 00:37.59 | Vajb | not sure, but it must send something since device wakes up when kbd is opened... |
| 00:38.42 | Vajb | i think i saw entries in syslog about hwkbd activated and deactivated |
| 00:39.06 | Vajb | slide open, slide closed actually... |
| 00:41.13 | Vajb | and actually n900 actually locks the screen if it is locked when i open kbd and close it, without touching screen |
| 00:50.51 | Vajb | from syslog "slide (GPIO 71) is now open" |
| 00:52.02 | Vajb | "slide (GPIO 71) is now closed" |
| 01:08.19 | Oksana | Yes, dbus-monitor --system reports platform_slide events too |
| 01:09.35 | Vajb | so i would need a script which trickers lock command when it sees slide closed, i guess |
| 01:10.22 | Vajb | no idea how to make one tho... |
| 01:11.50 | Maxdamantus | You can always just poll the gpio node in sysfs. |
| 01:12.31 | Oksana | I suggest the dbus because there is dbus-scripts-settings in maemo repositories. |
| 01:14.02 | Maxdamantus | Can just open the right /sys/devices/platform/gpio-switch/*/state file, read it, poll it for POLLPRI, repeat |
| 01:15.01 | Maxdamantus | is guessing that would be simpler than anything involving dbus. |
| 01:18.50 | Oksana | nods, but thinks that it would be nice to have something event-based, instead of polling the state every second or something |
| 01:19.16 | Oksana | goes to read start-up scripts in /etc/something.d/ ; do they detect slide as event? |
| 01:22.29 | Oksana | Init scripts are an interesting field |
| 01:36.17 | Maxdamantus | When I say "poll", I mean poll(2) |
| 01:36.41 | Maxdamantus | The operation that waits for an event on a set of fds. |
| 01:38.15 | Vajb | dbus-script-settings has just keyboard slide option. Or should it be taken care on command "lock if unlocked and unlock if locked" |
| 01:40.25 | Oksana | fds? Waiting for an event sounds nice |
| 01:42.42 | Maxdamantus | file descriptors |
| 01:43.18 | Maxdamantus | If you're using Python, it seems like it should be simple enough using the `select` module thing. |
| 01:45.14 | Maxdamantus | something like: f = open("/sys/..", "r"); while True: state = f.read(); poll = select.poll(); poll.register(f, select.POLLPRI); poll.poll(); f.seek(0); |
| 01:46.08 | Maxdamantus | So you just detect when `state` changes from "open\n" to "closed\n" or whatever. |
| 01:49.52 | Maxdamantus | Actually, don't need to create a `poll` object each iteration. Just register it outside of the loop then keep doing `state = f.read(); poll.poll(); f.seek(0)` |
| 01:50.20 | Maxdamantus | Python seems to have a decent IO library. |
| 01:50.31 | Maxdamantus | wishes it were also a decent language. |
| 01:56.27 | Vajb | u lost me |
| 02:00.04 | Maxdamantus | What I'm saying is, you should be able to write something as simple as this: f = open("/sys/..", "r"); poll = select.poll(); poll.register(f, select.POLLPRI); while True: state = f.read(); print(state); poll.poll(); f.seek(0); |
| 02:00.35 | Maxdamantus | which should print the state of the GPIO each time it's updated. |
| 02:00.49 | Oksana | Does poll.poll(); means wait-till-an-event-happens? |
| 02:00.52 | Maxdamantus | Don't need dbus or anything fancy. |
| 02:01.12 | Maxdamantus | Oksana: yes, so the process is doing nothing until that event occurs. |
| 02:01.14 | Oksana | Sounds short and simple. Is it doable in C? |
| 02:01.23 | Maxdamantus | Yes. |
| 02:02.11 | Maxdamantus | but at work atm, so not going to produce example C code. man 2 poll |
| 02:02.26 | Oksana | And the program will be idling in background all the time, but at least not using any resources/CPU... |
| 02:02.37 | Maxdamantus | Indeed. |
| 02:03.04 | Oksana | What is already idling in the background and sending these dbus signals about slider being opened and closed? |
| 02:03.46 | Maxdamantus | has a small C program that does something similar to skip songs in mpd when the shutter button is pressed. |
| 02:09.02 | Vajb | hmm i see. So i would c translator |
| 02:09.17 | Vajb | i'll see what i manage when i get back home |
| 02:29.05 | DocScrutinizer05 | what the heck are you talking about? dbus-scripting doesn't need polling |
| 02:30.53 | Oksana | Different things. dbus-scripts is one solution to detect keyboard-slide being closed, while polling is another (python example above, but just as doable in C). |
| 02:34.54 | DocScrutinizer05 | http://talk.maemo.org/showthread.php?t=48504 |
| 02:38.33 | DocScrutinizer05 | btw maemo,org cert invalid. talk.maemo.org search a total fail |
| 02:39.17 | DocScrutinizer05 | nevermind the second |
| 02:40.05 | DocScrutinizer05 | for locking screen just replace the aplay line in my playswoosh script by the according dbus call from phonecontrol |
| 02:40.47 | DocScrutinizer05 | err play-sound |
| 02:42.14 | DocScrutinizer05 | also you want to change "$slide == open" to "$slide == closed" |
| 02:43.02 | DocScrutinizer05 | or follow my original instructions as of >>for the screen locking on closing kbd slider you may want to add the "else" lines from above<< |
| 02:47.07 | DocScrutinizer05 | Oksana: dbus-monitor (and dbus-scripting) do wait for events. If they use poll() or another equivalent function for it I don't know and doesn't matter |
| 02:55.25 | DocScrutinizer05 | I suspect I'm missing parts of the convo, didn't see how init scripts came in, nor any polling script |
| 02:57.02 | Oksana | Question is, do dbus-scripts add an additional overhead, compared against a lower-level (?) polling of device state? |
| 02:59.06 | DocScrutinizer05 | you do not want to do any polling! that eats battery like mad. Poll() and select() have nothing to do with polling. You also can't use poll() in this context |
| 02:59.24 | DocScrutinizer05 | and no, dbus-scripting doesn't add any overhead |
| 03:01.13 | DocScrutinizer05 | see slide=$(cat sys/devices/platform/gpio-switch/slide/state); in my script, poll() on sysnodes doesn't work usually |
| 03:01.20 | DocScrutinizer05 | it's non-blocking |
| 03:01.33 | DocScrutinizer05 | thus you can't use poll() |
| 03:02.08 | DocScrutinizer05 | polling would be while sleep 1; do slide=$(cat sys/devices/platform/gpio-switch/slide/state); done; |
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| 03:03.16 | DocScrutinizer05 | since that's BAD(TM), my script waits for activation by dbus-scripting and then reads out state of slider since stupid dbus messages don't tell the state of a "swirch", only the fact that it changed |
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| 03:12.48 | DocScrutinizer05 | btw also inotify() doesn't work on sysnodes since their content gets dynamically created on on read() |
| 03:13.02 | DocScrutinizer05 | s/on on/only on/ |
| 03:13.59 | DocScrutinizer05 | that's also the reason why they are usually non-blocking read() and thus can't make use of poll() |
| 03:23.04 | Vajb | thx DocScrutinizer05, i'll try ur play-sound script after i get some sleep. |
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| 05:18.02 | Maxdamantus | 15:01:13 < DocScrutinizer05> see slide=$(cat sys/devices/platform/gpio-switch/slide/state); in my script, poll() on sysnodes doesn't work usually |
| 05:18.20 | Maxdamantus | It specifically does for GPIO "state" nodes with POLLPRI |
| 05:20.11 | Maxdamantus | See Documentation/gpio/sysfs.txt .. it's the normal behaviour on Linux. |
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| 05:26.03 | Maxdamantus | also to clarify, I never intended "polling" as in `for(;;){ sleep(1); check(); }` |
| 05:26.19 | Maxdamantus | I was specifically referring to `poll(2)` |
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| 07:02.09 | Maxdamantus | The code I wrote works as-is btw |
| 07:02.28 | Maxdamantus | just copied it into the repl |
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| 10:47.01 | sixwheeledbeast^ | Locking screen on keyboard state closed would drive me mad. |
| 10:47.41 | enyc | -> talk.maemo.org SSL certificate error fail expired today! |
| 10:48.14 | enyc | Can we have IPv6-enabled on server and SSL letsencrypt or something that autorenews ???? |
| 10:48.18 | enyc | I can help [...] |
| 10:48.37 | enyc | not sure who looks after servers |
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| 11:29.21 | sixwheeledbeast^ | Certs are to be renewed. http://mg.pov.lt/maemo-irclog/%23maemo.2017-07-28.log.html#t2017-07-28T10:59:38 |
| 11:30.12 | sixwheeledbeast^ | I would imagine it will be mentioned on Tuesday's meeting if it hasn't happened. |
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| 11:49.10 | enyc | ok but outdate atlready ran-out ?? |
| 11:49.18 | enyc | warfare: meow! =) |
| 12:00.23 | enyc | hrrm expried a wek ago actually |
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| 16:43.00 | DocScrutinizer05 | LE is a PITA |
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| 16:44.21 | DocScrutinizer05 | juiceme: could you get a 2 xear wildcard cert and get the expense refunded by MCeV? |
| 16:45.04 | DocScrutinizer05 | pleeease! |
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| 19:35.26 | freemangordon | Hi there :) |
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| 20:09.50 | TheKit | hi! |
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| 21:23.36 | sixwheeledbeast^ | wb |
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