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2023-04-12T11:01:31Z

‎FAQ

Yanw: Created page with "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..."

2023-04-03T10:04:51Z

Created page with "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..."

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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;
--

@@ Line 42: / Line 42: @@
 ===FAQ===
 The touch screen cannot rotate with the screen.
    Add a patch to the framework/native directory,the content is as follows

Rock5/guide/Touch Screen Portable Monitor - Revision history

Yanw: /* FAQ */

Yanw: Created page with "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..."