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Community Workspace/Tegra3/Nexus7
Glueckself (Talk | contribs) m (→Touchscreen rotation) |
Glueckself (Talk | contribs) (added missing information about enabling accelerometer and gyroscope. formatting changed) |
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All files are in /sys/devices/platform/tegra-i2c.2/i2c-2/2-0068/iio:device0 | All files are in /sys/devices/platform/tegra-i2c.2/i2c-2/2-0068/iio:device0 | ||
| − | + | mpu6050 (sensor in Nexus 7) configuration: | |
| + | |||
| + | # configure buffer: "# echo 10 > buffer/length". 10 is choosen by me at random. -- [[User:Glueckself|Glueckself]] 23:49, 28 January 2013 (UTC) | ||
| + | # configure desired axes / values: "# echo 1 > scan_elements/in_*_en". This command has to be run on all desired values, "> in_*_en" is not a valid redirection. | ||
| + | # enable buffer: "# echo 1 > buffer/enable" | ||
The data can then be read from in_{accel,anglvel}_{x,y,z}_raw. | The data can then be read from in_{accel,anglvel}_{x,y,z}_raw. | ||
Revision as of 23:49, 28 January 2013
Contents |
Mer on Nexus7
DISCLAIMER: This project is not endorsed or supported by any company. This is purely a community based effort.
This page describes the running Mer on Nexus 7 (see Community_Workspace/Tegra3 for commong Tegra3 stuff).
The hardware adaptation is maintained in the project [1]
The Plasma active instructions are quite generic and can be easily adapted to other images as well.
Hardware Adaptation Status
| Device Profile | Boots | Display | Touchscreen | Wireless | Mobile Data | H/W Accel. GFX | Sensors | GPS |
|---|---|---|---|---|---|---|---|---|
| Nexus 7 (wifi) | Yes | Yes | Yes | Yes | N/A | Yes | kernel, yes | unknown |
| Nexus 7 (gprs) | Yes | Yes | Yes | Yes | not tested | Yes | kernel, yes | unknown |
Plasma Active on Nexus7
Installation
See Community_Workspace/Tegra3/Nexus7/PA_installation.
Known Issues
See Community_Workspace/Tegra3/Nexus7/PA_Known_Issues
Workarounds
Keyboard
If you have issues with the default keyboard you should give this one a try: To install it just:
zypper ar -G http://repo.pub.meego.com/home:/wonko:/branches:/Project:/KDE:/Trunk:/Testing/CE_UX_PlasmaActive_armv7hl/home:wonko:branches:Project:KDE:Trunk:Testing.repo zypper up maliit-active libmaliit-quick killall -9 maliit-server
Nemo Mobile
Most things should work but virtual keyboard doesn't, which renders everything unusable. The screen shows just black when the keyboard is visible. The same symptom is seen also in Virtual Machines and was fixed by workarounding something in Mesa (which is of course not used on Tegra).
See Community_Workspace/Tegra3/Nexus7/EGL_NOK_issues for details.
Hardware support
Accelerometer / Gyroscope
All files are in /sys/devices/platform/tegra-i2c.2/i2c-2/2-0068/iio:device0
mpu6050 (sensor in Nexus 7) configuration:
- configure buffer: "# echo 10 > buffer/length". 10 is choosen by me at random. -- Glueckself 23:49, 28 January 2013 (UTC)
- configure desired axes / values: "# echo 1 > scan_elements/in_*_en". This command has to be run on all desired values, "> in_*_en" is not a valid redirection.
- enable buffer: "# echo 1 > buffer/enable"
The data can then be read from in_{accel,anglvel}_{x,y,z}_raw.
Touchscreen rotation
There is a modified mtev driver that supports rotation (via the "Rotation" parameters).
Xinput <= 1.5.4 needs to be installed (>1.5.4 needs a newer xi library). xrandr/xinput values are: normal/3, left/2, inverted/1, right/0.
The UI can then be rotated via xrandr.
Please note that this doesn't support animations. There are also a few issues (half drawn background, some cursor issues).
