CmdCalibrate
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The calibration procedure collects three touches from the touch screen, then computes and loads an appropriate matrix into <span style="color:#ff0000;">REG_TOUCH_TRANSFORM_A-F</span>. | The calibration procedure collects three touches from the touch screen, then computes and loads an appropriate matrix into <span style="color:#ff0000;">REG_TOUCH_TRANSFORM_A-F</span>. | ||
| − | To use it, create a display list and then use [[ | + | To use it, create a display list and then use [[CmdCalibrate]]. The co-processor engine overlays the touch targets on the current Display List, gathers the calibration input and updates <span style="color:#ff0000;">REG_TOUCH_TRANSFORM_A-F</span>. |
<span style="font-family: Arial;"> </span> | <span style="font-family: Arial;"> </span> | ||
Version vom 12. Dezember 2014, 14:19 Uhr
Action
Execute the touch screen calibration routine.
Syntax
CmdCalibrate
Remarks
The calibration procedure collects three touches from the touch screen, then computes and loads an appropriate matrix into REG_TOUCH_TRANSFORM_A-F.
To use it, create a display list and then use CmdCalibrate. The co-processor engine overlays the touch targets on the current Display List, gathers the calibration input and updates REG_TOUCH_TRANSFORM_A-F.
The completion of this function is detected when the value of REG_CMD_READ is equal to REG_CMD_WRITE.
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