Rock5/guide/Touch Screen Portable Monitor
This page is how rock5 created the IDC file for Touch Screen Portable Monitor
What is idc?
idc (Input Device Configuration) is an input device configuration file, which contains device-specific configuration attributes that affect the behavior of the input device. For touch screen devices, an idc file is always required to define its behavior.
How to edit IDC files
Confirm the VID and PID of the Touch Screen.
$ lsusb Bus 002 Device 005: ID 27c0:0858
Name the IDC file according to the ID.
$ ls /system/usr/idc Vendor_27c0_Product_0858.idc
Edit IDC file
$ cat Vendor_27c0_Product_0858.idc touch.deviceType = touchScreen device.internal= 1 touch.orientationAware = 1 keyboard.layout = Vendor_27c0_Product_0858 keyboard.orientationAware = 1 cursor.mode = navigation cursor.orientationAware = 1
The specific attribute configuration of the file can refer to https://source.android.com/docs/core/interaction/input/input-device-configuration-files
How to load IDC file
Create an IDC file under the device/rockchip/rk3588 directory of the SDK.
$ vim Vendor_27c0_Product_0858.idc
Add in the device.mk file.
PRODUCT_COPY_FILES += $(LOCAL_PATH)/Vendor_27c0_Product_0858.idc:$(TARGET_COPY_OUT_SYSTEM)/usr/idc/Vendor_27c0_Product_0858.idc
Recompile the firmware.
$ source build/envsetup.sh
$ lunch ${PRODUCT_NAME}-userdebug
$ ./build.sh -Au
FAQ
The touch screen cannot rotate with the screen.
Add a patch to the framework/native directory,the content is as follows
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index decbea4c3e..42c4612159 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -17,7 +17,7 @@
#include "../Macros.h"
#include "TouchInputMapper.h"
-
+#include "cutils/properties.h"
#include "CursorButtonAccumulator.h"
#include "CursorScrollAccumulator.h"
#include "TouchButtonAccumulator.h"
@@ -668,6 +668,29 @@ void TouchInputMapper::configureSurface(nsecs_t when, bool* outResetNeeded) {
if (viewportChanged) {
mViewport = *newViewport;
+ char buffer_orientation[270];
+ memset(buffer_orientation, 0, sizeof(buffer_orientation));
+ property_get("persist.sys.panel.flip", buffer_orientation, "270");
+ int cmpRet = atoi(buffer_orientation);
+ ALOGE("persist.sys.hwrotation= %d",cmpRet);
+ if (cmpRet == 0)
+ {
+ mViewport.orientation = DISPLAY_ORIENTATION_0;
+ }
+
+ else if (cmpRet == 90)
+ {
+ mViewport.orientation = DISPLAY_ORIENTATION_90;
+ }
+ else if (cmpRet == 180)
+ {
+ mViewport.orientation = DISPLAY_ORIENTATION_180;
+ }
+ else if (cmpRet == 270)
+ {
+ mViewport.orientation = DISPLAY_ORIENTATION_270;
+ }
+
if (mDeviceMode == DEVICE_MODE_DIRECT || mDeviceMode == DEVICE_MODE_POINTER) {
// Convert rotated viewport to natural surface coordinates.
int32_t naturalLogicalWidth, naturalLogicalHeight;
--