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The development board a total of eight user key, which is defined in the android system in the following
table:
Key Number
Function defined
K6
on
K5
next
K4
left
K3
Right
K2
Menu (long press menu to rotate the screen display)
K1
Home
1.2 touch screen calibration
When you install the Android system, the first time, there will be a calibration interface, as shown, the
calibration process automatically detects the device you are using the touch screen, touch the line, if
adopted, will show: / dev/touchscreen-1wire
If you are using ARM itself with the touch screen controller is displayed: / dev / touchsreen, Fig.
Follow the prompts, then click the center of the cross calibration, until into the system, if you point the
location of more partial, or when alignment jitter, the cycle will be corrected.
1.3 screen rotation
Key Number
Function defined
K8
K7
OK
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