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| e-yes | anyone has success with playing with vibrator (nokia n9)? I mean interaction between userland and /dev/input/vibra node, not mce or even higher level APIs | 19:07 |
|---|---|---|
| e-yes | looks like ioctl payload driver sends directly to vibra amplifier (thru spi bus). therefore, without knowledge about chip it's hard to understand what I should send to get, let's say 100ms vibration | 19:08 |
| e-yes | yet another "open source" aspect of nokia n9 :( | 19:09 |
| javispedro | e-yes: what protocol does it speak? have you tried normal kernel FF one? | 19:14 |
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| e-yes | javispedro, it accepts only FF_PERIODIC+FF_CUSTOM. so, no idea what I should send as payload (unsigned short array, effect.u.periodic.custom_data) | 19:17 |
| e-yes | looks like this custom_data is finally is being transmitted thru spi | 19:17 |
| javispedro | bad | 19:18 |
| javispedro | all I've used is the layer that is immediately above FF, which is vibetonz/immvibde | 19:18 |
| javispedro | *immvibe | 19:18 |
| javispedro | that is also propietary though... | 19:18 |
| e-yes | does it work without mce running? do you have any examples how to use it? | 19:19 |
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| javispedro | e-yes: this is from my old SDL port: https://github.com/harmattan/harmattan-sdl/blob/0606067b617e529243adf8baf1bc21994b7df1fd/src/haptic/immersion/SDL_syshaptic.c | 19:20 |
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| javispedro | I don't remember where I got the info, but if you google around the function names you'll find some hits, mostly Android game devs | 19:21 |
| javispedro | it works without mce indeed | 19:22 |
| javispedro | afaik that's what mce uses. | 19:22 |
| coderus | e-yes: afaik juiceme played with vibra, but didnt succeded at initializing it, so it worked only after nokia frivers initialized vibra first. | 19:26 |
| e-yes | I managed to initialize it somehow, but vibra feedback is so "soft" | 19:33 |
| e-yes | not strong at all | 19:33 |
| e-yes | simple test - http://pastebin.com/gTts8XHs | 19:35 |
| e-yes | I changed custom_len to 200 and decreased usleep interval to 6000us - now vibra is stronger | 19:52 |
| e-yes | looks like kernel sends smth on spi constantly while vibration | 19:53 |
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| e-yes | that may mean that vibra amplifier doesn't have SPI interface, it interprets MOSI as PWM and amplifies it. this theory explains why there is no CLK used | 19:54 |
| e-yes | yep, sure. not SPI at all, despite driver uses spi_message_init+spi_message_add_tail+spi_sync | 20:05 |
| e-yes | OMFG! Nokia, what do you do, cut it off!11 | 20:06 |
| javispedro | lol | 20:07 |
| e-yes | fscking disguise) | 20:07 |
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| e-yes | that what I always call OOO programming | 20:16 |
| e-yes | OOO programming - overkill and overhead overengineered programming | 20:18 |
| manqeloq1e | heh, great way to save money | 20:25 |
| e-yes | why not to use PWM? I believe OMAP3 have it | 20:48 |
| e-yes | and I'm blind, actually... I just recognized that there is "Omap PWM" sign above SIMO (MOSI) line | 20:49 |
| e-yes | but they use SPI API anyway) | 20:49 |
| e-yes | vibra_spi.c: "This file implements a driver for SPI data driven vibrator." | 20:52 |
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| e-yes | modem activity affects vibration cleanness, predictable:( | 23:19 |
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