Difference between revisions of "Touchscreen Calibration (DIVELK)"
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== History == | == History == | ||
| Line 4: | Line 9: | ||
!Version | !Version | ||
!Date | !Date | ||
| − | ! | + | !DIVELK version |
| − | |||
!Notes | !Notes | ||
|- | |- | ||
|4.0.0 | |4.0.0 | ||
| − | |April 2018 | + | |April 2018 <br/><hr/> March 2019 |
| − | |[[Diva_Embedded_Linux_Kit_(DIVELK)#DIVELK_4.0.0|DIVELK 4.0.0]] | + | |[[Diva_Embedded_Linux_Kit_(DIVELK)#DIVELK_4.0.0|DIVELK 4.0.0]] <br/><hr/> [[Diva_Embedded_Linux_Kit_(DIVELK)#DIVELK_4.0.1|DIVELK 4.0.1]] |
| − | |DIVELK 4.0. | ||
| | | | ||
|- | |- | ||
| Line 17: | Line 20: | ||
== Calibration == | == Calibration == | ||
| − | + | === Weston === | |
| + | If the Weston compositor is running in the background, it is necessary to remove the old udev rules, and restart the device in order to calibrate the touchscreen. | ||
<pre> | <pre> | ||
| − | rm /etc/udev/rules.d/ws-calibrate.rules | + | rm -f /etc/udev/rules.d/ws-calibrate.rules |
reboot | reboot | ||
</pre> | </pre> | ||
At the next restart the weston-calibrator tool should automatically show up. Tap on the red cross appearing on the screen to calibrate the touch panel. | At the next restart the weston-calibrator tool should automatically show up. Tap on the red cross appearing on the screen to calibrate the touch panel. | ||
| − | '''Note:''' In the case | + | '''Note:''' In the case of root filesystem over NFS and SD card plugged in, make sure delete also the calibration rules stored in the SD card partition before rebooting: |
| + | |||
<pre> | <pre> | ||
rm /etc/udev/rules.d/ws-calibrate.rules | rm /etc/udev/rules.d/ws-calibrate.rules | ||
| Line 30: | Line 35: | ||
reboot | reboot | ||
</pre> | </pre> | ||
| − | Additional information can be found | + | === Non-Weston based Graphic System === |
| + | If the weston compositor is not running, it is necessary to run: | ||
| + | <pre> | ||
| + | export TSLIB_CALIBFILE=/usr/share/pointercal | ||
| + | ts_calibrate | ||
| + | </pre> | ||
| + | |||
| + | ==== Exporting TSLIB_CALIBFILE ==== | ||
| + | The environment variable TSLIB_CALIBFILE is used by the tslib package to indicate the location of the pointercal file. The default value for TSLIB_CALIBFILE is /etc/pointercal. If you are writing a program that uses tslib you should make sure that you export TSLIB_CALIBFILE to point to the location of your pointercal file (as indicated in the previous section), or that you place a copy of the pointercal file at the default /etc/pointercal location. | ||
| + | |||
| + | Additional information can be found int the following [http://processors.wiki.ti.com/index.php/How_to_Recalibrate_the_Touchscreen#Where_is_the_ws-calibrate.rules_file.3F page in TI wiki] | ||
Latest revision as of 12:01, 8 March 2019
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Contents
History[edit | edit source]
| Version | Date | DIVELK version | Notes |
|---|---|---|---|
| 4.0.0 | April 2018 March 2019 |
DIVELK 4.0.0 DIVELK 4.0.1 |
Calibration[edit | edit source]
Weston[edit | edit source]
If the Weston compositor is running in the background, it is necessary to remove the old udev rules, and restart the device in order to calibrate the touchscreen.
rm -f /etc/udev/rules.d/ws-calibrate.rules reboot
At the next restart the weston-calibrator tool should automatically show up. Tap on the red cross appearing on the screen to calibrate the touch panel.
Note: In the case of root filesystem over NFS and SD card plugged in, make sure delete also the calibration rules stored in the SD card partition before rebooting:
rm /etc/udev/rules.d/ws-calibrate.rules rm /run/media/mmcblk0p1/ws-calibrate.rules reboot
Non-Weston based Graphic System[edit | edit source]
If the weston compositor is not running, it is necessary to run:
export TSLIB_CALIBFILE=/usr/share/pointercal ts_calibrate
Exporting TSLIB_CALIBFILE[edit | edit source]
The environment variable TSLIB_CALIBFILE is used by the tslib package to indicate the location of the pointercal file. The default value for TSLIB_CALIBFILE is /etc/pointercal. If you are writing a program that uses tslib you should make sure that you export TSLIB_CALIBFILE to point to the location of your pointercal file (as indicated in the previous section), or that you place a copy of the pointercal file at the default /etc/pointercal location.
Additional information can be found int the following page in TI wiki
