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→‎More Historical Details / Hints for Developers: libinput measure touchpad-pressure added
Not mentioned in the porting docu yet: Had to use '''uppercase''' partition labels in deviceinfo_flash_heimdall_partition_(kernel|system) variables in deviceinfo file, even if their symlinks are lowercase (e.g. "system -> /dev/block/mmcblk0p36"), otherwise get 'ERROR: Partition "system" does not exist in the specified PIT.'
 
====libinput measure touchpad-pressure====
Touchpad pressure does not seem return pressure but is related to the number of fingers touched at the same time, see below ("# x finger down" comments added by me). Unfortunately, tweaking the pressure like https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html tells does not work.
 
gts210vewifi:~# libinput measure touchpad-pressure
Using sec_touchscreen: /dev/input/event2
 
Ready for recording data.
Pressure range used: 30:25
Palm pressure range used: 130
Place a single finger on the touchpad to measure pressure values.
Ctrl+C to exit
 
# 1 finger down
Sequence 496 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
# 2 finger down
Sequence 508 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 508 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
# 3 finger down
Sequence 511 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 511 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 511 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
 
# 4 fingers down
Sequence 522 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 522 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 522 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 522 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
 
# 5 fingers down
Sequence 527 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 527 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 527 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 527 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
Sequence 527 pressure: min: 0 max: 255 avg: 42 median: 0 tags: down palm
 
# 6 fingers down
Sequence 533 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 533 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 533 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 533 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
Sequence 533 pressure: min: 0 max: 255 avg: 42 median: 0 tags: down palm
Sequence 533 pressure: min: 0 max: 255 avg: 36 median: 0 tags: down palm
 
# 7 fingers down
Sequence 540 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 540 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 540 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 540 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
Sequence 540 pressure: min: 0 max: 255 avg: 42 median: 0 tags: down palm
Sequence 540 pressure: min: 0 max: 255 avg: 36 median: 0 tags: down palm
Sequence 540 pressure: min: 0 max: 255 avg: 31 median: 0 tags: down palm
 
# 8 fingers down
Sequence 548 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 42 median: 0 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 36 median: 0 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 31 median: 0 tags: down palm
Sequence 548 pressure: min: 0 max: 255 avg: 28 median: 0 tags: down palm
 
# 9 fingers down
Sequence 557 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 42 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 36 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 31 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 28 median: 0 tags: down palm
Sequence 557 pressure: min: 0 max: 255 avg: 25 median: 0 tags: down palm
 
# 10 fingers down
Sequence 567 pressure: min: 0 max: 255 avg: 127 median: 255 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 85 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 63 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 51 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 42 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 36 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 31 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 28 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 25 median: 0 tags: down palm
Sequence 567 pressure: min: 0 max: 255 avg: 23 median: 0 tags: down palm
== See also ==
46

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