RK3288 紅外遙控器增加系統中已有的鍵值

本文轉載自查看原文 2018-12-05 10:28 1140 IR/ 按鍵/ 紅外/ 遙控器/ NEC/ RK3288/ Android

轉載請注明出處：https://www.cnblogs.com/lialong1st/p/10066673.html

CPU：RK3288

系統：Android 5.1

1、查看遙控器的用戶碼和鍵值，供應商給的可能是反碼，也有可能不正確。

打開紅外打印功能有以下兩種方式，內核打印可以用串口，也可以在adb中使用指令 # cat proc/kmsg

(1)通過指令打開紅外接收的打印功能，然后按遙控器按鍵，就可以在內核打印中看到用戶碼和鍵值。

$ adb shell
root@rk3288:/ # cd sys/module/rockchip_pwm_remotectl/parameters
cd sys/module/rockchip_pwm_remotectl/parameters
root@rk3288:/sys/module/rockchip_pwm_remotectl/parameters # ls
ls
code_print
dbg_level
root@rk3288:/sys/module/rockchip_pwm_remotectl/parameters # cat code_print
cat code_print
0
root@rk3288:/sys/module/rockchip_pwm_remotectl/parameters # echo 1 > code_print
echo 1 > code_print

(2)在紅外接收的源碼中，給下面變量賦值，也可以打印用戶碼和鍵值，但需要重新編譯燒錄內核

path：kernel/drivers/input/remotectl/rockchip_pwm_remotectl.c

static int rk_remote_print_code = 1;

2、在dts文件中增加鍵值，絕大部分鍵值系統中已經定義，如果沒有的就需要自己添加。

path：kernel/arch/arm/boot/dts/rk3288.dtsi

remotectl: pwm@ff680000 {
        compatible = "rockchip,remotectl-pwm";
        reg = <0xff680000 0x10>;
        #pwm-cells = <2>;
        pinctrl-names = "default";
        pinctrl-0 = <&pwm0_pin>;
        clocks = <&clk_gates11 11>;
        clock-names = "pclk_pwm";
        remote_pwm_id = <0>;
        interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
        status = "disabled";
    };

remote_pwm_id：使用pwm0

path：kernel/arch/arm/boot/dts/rk3288-tb_8846.dts

&remotectl {
    status = "okay";
    handle_cpu_id = <2>;
    ir_key0{
        rockchip,usercode = <0xff00>;
        rockchip,key_table = 
            <0xf0 KEY_POWER>,        // Power
            <0xad KEY_HOME>,         // Home
            <0xef KEY_MENU>,         // Menu
            <0xa7 KEY_MUTE>,         // mute
            <0xa1 388>,              // Mouse
            <0xb2 KEY_UP>,           // Up
            <0xee KEY_PAGEUP>,       // PageUp
            <0xa3 KEY_VOLUMEUP>,     // Vol+
            <0xa8 KEY_LEFT>,         // Left
            <0xa4 KEY_ENTER>,        // Ok/ENTER
            <0xa0 KEY_RIGHT>,        // Right
            <0xab KEY_VOLUMEDOWN>,   // Vol-
            <0xa9 KEY_TAB>,          // Tab
            <0xa5 KEY_DOWN>,         // Down
            <0xed KEY_PAGEDOWN>,     // PageDown
            <0xac KEY_BACK>,         // Back
            <0xe8 KEY_1>,            // 1
            <0xe4 KEY_2>,            // 2
            <0xe0 KEY_3>,            // 3
            <0xe9 KEY_4>,            // 4
            <0xe5 KEY_5>,            // 5
            <0xe1 KEY_6>,            // 6
            <0xea KEY_7>,            // 7
            <0xe6 KEY_8>,            // 8
            <0xe2 KEY_9>,            // 9
            <0xe7 KEY_0>,            // 0
            <0xeb KEY_DOT>,          // .
            <0xe3 KEY_DELETE>,       // Del
            <0xa6 KEY_PAUSE>,        // Pause
            <0xaa KEY_PLAY>;         // Play
    };        
};

usercode：用戶碼

key_table：左側為遙控器鍵值，右側為按鍵對應的功能碼

絕大部分功能碼可以在下面文件中查找到，寫宏或者對應的數字都可以（例如mouse鍵），如果的確沒有，可以用功能鍵代替或者手動添加。

path：kernel/include/dt-bindings/input/input.h

此時，編譯燒錄，按鍵值就可以通過 getevent 查看到，但app中收到的按鍵值可能與實際不對應或者未知按鍵。

getevent用法：https://www.cnblogs.com/lialong1st/p/9093851.html

3、打開下面路徑的文件，可以看到功能碼和上層對應的關系，如果新添加的按鍵值沒有，也需要按照已有的格式手動添加。

沒有的按鍵值，在按鍵時，上層app收到的值是未知按鍵。

path：device/rockchip/common/ff680000_pwm.kl

key 28    ENTER
key 116   POWER             
key 158   BACK              
key 139   MENU         
key 217   SEARCH             
key 232   DPAD_CENTER       
key 108   DPAD_DOWN         
key 103   DPAD_UP           
key 102   HOME              
key 105   DPAD_LEFT         
key 106   DPAD_RIGHT        
key 115   VOLUME_UP
key 114   VOLUME_DOWN
key 143   NOTIFICATION      
key 113   VOLUME_MUTE
key 388   TV_KEYMOUSE_MODE_SWITCH
key 104   PAGE_UP
key 109   PAGE_DOWN
key 15    TAB
key 2     1
key 3     2
key 4     3
key 5     4
key 6     5
key 7     6
key 8     7
key 9     8
key 10    9
key 11    0
key 52    PERIOD
key 111   DEL
key 119   MEDIA_PAUSE
key 207   MEDIA_PLAY

中間的數字是功能碼對應的數字，與第二步的查找方法一致。

右側的是與上層對應的關系，在下面路徑中任意一個都可以查找到，如有特殊功能鍵則需要添加。

path：frameworks/base/core/java/android/view/KeyEvent.java（例如：KEYCODE_DPAD_DOWN 只需要取后半部分就可以）

path：frameworks/native/include/input/InputEventLabels.h（例如：DPAD_DOWN 只需要取括號內部的就可以）

注意：數字鍵不要用小鍵盤（NUMPAD_0 等等），因為小鍵盤有多功能。

此時，就大功告成了。

下面為簡單的遙控器測試app源碼

MainActivity.java

package com.example.aaron.irtest;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.TextView;
import android.widget.Toast;

import java.time.LocalDate;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "IR";
    TextView tv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv = (TextView) findViewById(R.id.display);
    }

    public boolean onKeyDown(int keyCode, KeyEvent event)
    {
        Log.d(TAG, String.valueOf(keyCode));
        switch (keyCode)
        {
            case KeyEvent.KEYCODE_POWER:
                tv.setText("電源鍵");
                Toast.makeText(getBaseContext(), "電源鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_HOME:
                tv.setText("主頁鍵");
                Toast.makeText(getBaseContext(), "主頁鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_MENU:
                tv.setText("菜單鍵");
                Toast.makeText(getBaseContext(), "菜單鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_VOLUME_MUTE:
                tv.setText("靜音鍵");
                Toast.makeText(getBaseContext(), "靜音鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_STEM_PRIMARY:
                tv.setText("鼠標鍵");
                Toast.makeText(getBaseContext(), "鼠標鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_DPAD_UP:
                tv.setText("上鍵");
                Toast.makeText(getBaseContext(), "上鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_PAGE_UP:
                tv.setText("上頁鍵");
                Toast.makeText(getBaseContext(), "上頁鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_VOLUME_UP:
                tv.setText("音量+鍵");
                Toast.makeText(getBaseContext(), "音量+鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_DPAD_LEFT:
                tv.setText("左鍵");
                Toast.makeText(getBaseContext(), "左鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_ENTER:
                tv.setText("確認鍵");
                Toast.makeText(getBaseContext(), "確認鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_DPAD_RIGHT:
                tv.setText("右鍵");
                Toast.makeText(getBaseContext(), "右鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
                tv.setText("音量-鍵");
                Toast.makeText(getBaseContext(), "音量-鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_TAB:
                tv.setText("Tab鍵");
                Toast.makeText(getBaseContext(), "Tab鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_DPAD_DOWN:
                tv.setText("下鍵");
                Toast.makeText(getBaseContext(), "下鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_PAGE_DOWN:
                tv.setText("下頁鍵");
                Toast.makeText(getBaseContext(), "下頁鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_BACK:
                tv.setText("返回鍵");
                Toast.makeText(getBaseContext(), "返回鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_1:
                tv.setText("1");
                Toast.makeText(getBaseContext(), "1", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_2:
                tv.setText("2");
                Toast.makeText(getBaseContext(), "2", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_3:
                tv.setText("3");
                Toast.makeText(getBaseContext(), "3", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_4:
                tv.setText("4");
                Toast.makeText(getBaseContext(), "4", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_5:
                tv.setText("5");
                Toast.makeText(getBaseContext(), "5", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_6:
                tv.setText("6");
                Toast.makeText(getBaseContext(), "6", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_7:
                tv.setText("7");
                Toast.makeText(getBaseContext(), "7", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_8:
                tv.setText("8");
                Toast.makeText(getBaseContext(), "8", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_9:
                tv.setText("9");
                Toast.makeText(getBaseContext(), "9", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_0:
                tv.setText("0");
                Toast.makeText(getBaseContext(), "0", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_PERIOD:
                tv.setText("小數點");
                Toast.makeText(getBaseContext(), "小數點", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_DEL:
                tv.setText("刪除鍵");
                Toast.makeText(getBaseContext(), "刪除鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
                tv.setText("暫停鍵");
                Toast.makeText(getBaseContext(), "暫停鍵", Toast.LENGTH_SHORT).show();
                break;
            case KeyEvent.KEYCODE_MEDIA_PLAY:
                tv.setText("播放鍵");
                Toast.makeText(getBaseContext(), "播放鍵", Toast.LENGTH_SHORT).show();
                break;
        }
        return false;
    }
}

View Code

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.aaron.irtest.MainActivity">

    <TextView
        android:id="@+id/display"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:textSize="50sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

View Code

RK3288 紅外遙控器增加自定義按鍵

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