SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH
Command Set
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9.-Finally the SmartGPU will store on RAM the
new 4 working calibration values obtained with
touch on points pressing.
User can now call some drawing with touch
routine to check If the calibration was
successfully and the values are correct.
When the above calibration process is
executed, calibration values are only stored on
RAM, this means that if a reset or power off is
performed, those values will be lost, so once that
user performs a calibration process and its sure
that the values are correct, values can be saved
with the command Save Values(M,T,S) from
RAM to non-volatile memory FLASH, This way
even if a reset or power off is performed, values
will remain saved.
Last command Delete-restore factory calibration
values(M,T,D) deletes any saved values by user
to non-volatile memory FLASH, and restores
the factory calibration values to SmartGPU2
touchscreen.
A common touchscreen calibration procedure will
be:
1.-Delete Values(M,T,D).(get default factory
values).
2.-Perform calibration process(M,T,C).
3.-Test updated values with some routine of
drawing points on screen with the received
touch coordinates(points).
4.-If user is happy with the new updated working
calibration values go to 5, if not, go to 2.
5.-Save to flash working calibration values(M,T,S)
Example (sent commands)
Example 1:
<4D,54,43> Run calibration process.
Example 2:
<4D,54,53> Save Values to Flash.
All data is in hex.