Opened 5 years ago

Closed 5 years ago

#11704 closed enhancement (fixed)

OFW - calibrate Raydium touchscreen

Reported by: wmb@… Owned by: wmb@…
Priority: normal Milestone: Not Triaged
Component: ofw - open firmware Version: not specified
Keywords: Cc: pgf, martin.langhoff
Blocked By: Blocking:
Deployments affected: Action Needed: no action
Verified: no


The EETI touchscreen needs calibration after assembly, otherwise there may be dead zones or other mis-tracking.

It would be good to do it during factory test.

That said, I wonder if the calibration might drift before the unit is deployed, maybe as a result of temperature, altitude, humidity, shipping conditions, or other factors. So it might be a good idea to recalibrate it somewhere else too, perhaps just before booting, or somewhere in the Linux startup.

Change History (3)

comment:1 Changed 5 years ago by wmb@…

  • Summary changed from OFW - calibrate EETI touchscreen to OFW - calibrate Raydium touchscreen

comment:2 Changed 5 years ago by wmb@…

  • Action Needed changed from code to add to release

Implemented by svn 2896. Test build at

You can test it as follows:

Decalibrate the touchscreen.  Type the following line and hold your palm on
the screen as you type the "enter".  Hold you palm on the screen for 2 seconds

  ok select /touchscreen  calibrate  unselect

Disable autocalibration and verify that the calibration is bad:

  ok dev /touchscreen
  ok patch noop calibrate selftest
  ok dend
  ok test /touchscreen

The tracking should be bad, reflecting the miscalibration.

Verify that the autocalibration fixes it:

  ok dev /touchscreen
  ok patch calibrate noop selftest
  ok dend
  ok test /touchscreen

comment:3 Changed 5 years ago by Quozl

  • Action Needed changed from add to release to no action
  • Resolution set to fixed
  • Status changed from new to closed

Is in Q4D06.

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