2012 내장형 시스템 설계 2012. 11. 21. full color led 디바이스 구성 full color led...

Full Color LED 디바이스 제어

2012 내장형 시스템 설계

2012. 11. 21

Full Color LED 디바이스 구성 Full Color LED 디바이스 드라이버 Full Color LED JNI 라이브러리 작성 Full Color LED 안드로이드 App 구현 JNI 라이브러리 빌드 결과 화면

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Table of Contents

Full Color LED 디바이스 구성 (1)

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◦ FPGA 내부의 컨트롤러에 의해 제어됨

Full Color LED 디바이스 구성 (2)

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◦ 9bit 로 구성된 12 개의 레지스터Full Color LED1 Red 0x0500_00A0 8-0 : LED PWM Data

0x000 ~ 0x100

Full Color LED1 Green 0x0500_00A2 8-0 : LED PWM Data

Full Color LED1 Blue 0x0500_00A4 8-0 : LED PWM Data

Full Color LED2 Red 0x0500_00A6 8-0 : LED PWM Data

Full Color LED2 Green 0x0500_00A8 8-0 : LED PWM Data

Full Color LED2 Blue 0x0500_00AA 8-0 : LED PWM Data

Full Color LED3 Red 0x0500_00B0 8-0 : LED PWM Data

Full Color LED3 Green 0x0500_00B2 8-0 : LED PWM Data

Full Color LED3 Blue 0x0500_00B4 8-0 : LED PWM Data

Full Color LED4 Red 0x0500_00B6 8-0 : LED PWM Data

Full Color LED4 Green 0x0500_00B8 8-0 : LED PWM Data

Full Color LED4 Blue 0x0500_00BA 8-0 : LED PWM Data

Full Color LED 디바이스 드라이버 (1)

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◦ 드라이버 코드 위치 “~/linux-3.0.15-s4210/drivers/hanback“ 디렉토리에

포함되어있음

◦ 드라이버 소스 코드 (fullcolorled.c)#include <linux/miscdevice.h>#include <linux/platform_device.h>#include <linux/fs.h>#include <linux/file.h>#include <linux/mm.h>#include <linux/list.h>#include <asm/io.h>#include <asm/uaccess.h>#include <asm/cacheflush.h>#include <linux/init.h>#include <linux/module.h>#include <linux/kernel.h>#include <linux/fs.h>#include <linux/errno.h>#include <linux/types.h>#include <linux/ioport.h>#include <linux/delay.h>


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◦ 드라이버 소스 코드 (fullcolorled.c)#define DRIVER_AUTHOR "hanback"#define DRIVER_DESC "full color led test program"

#define FULLCOLORLED_NAME "fullcolorled"#define FULLCOLORLED_MODULE_VERSION "FULL COLOR LED V0.1"#define FULLCOLORLED_ADDRESS 0x05000000#define FULLCOLORLED_ADDRESS_RANGE 0x1000

#define FULL_LED1 9#define FULL_LED2 8#define FULL_LED3 7#define FULL_LED4 6#define ALL_LED 5

static int fullled_usage = 0;static int led_num=0;static unsigned long *fullled_ioremap;static unsigned short *full_led_addr[4][3];


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◦ 드라이버 소스 코드 (fullcolorled.c)int fullled_open(struct inode *minode, struct file *mfile) {

if(fullled_usage != 0) return -EBUSY;

fullled_ioremap=ioremap(FULLCOLORLED_ADDRESS,FULLCOLORLED_ADDRESS_RANGE);

if(!check_mem_region((unsigned long)fullled_ioremap, FULLCOLORLED_ADDRESS_RANGE)) {request_mem_region((unsigned long)fullled_ioremap, FULLCOLORLED_ADDRESS_RANGE, FULLCOLORLED_NAME);

}else printk("driver: unable to register this!\n");

full_led_addr[0][0] =(unsigned short *)((unsigned long)fullled_ioremap+0xa0);full_led_addr[0][1] =(unsigned short *)((unsigned long)fullled_ioremap+0xa2);full_led_addr[0][2] =(unsigned short *)((unsigned long)fullled_ioremap+0xa4);

full_led_addr[1][0] =(unsigned short *)((unsigned long)fullled_ioremap+0xa6);full_led_addr[1][1] =(unsigned short *)((unsigned long)fullled_ioremap+0xa8);full_led_addr[1][2] =(unsigned short *)((unsigned long)fullled_ioremap+0xaa);

full_led_addr[2][0] =(unsigned short *)((unsigned long)fullled_ioremap+0xb0);full_led_addr[2][1] =(unsigned short *)((unsigned long)fullled_ioremap+0xb2);full_led_addr[2][2] =(unsigned short *)((unsigned long)fullled_ioremap+0xb4);

full_led_addr[3][0] =(unsigned short *)((unsigned long)fullled_ioremap+0xb6);full_led_addr[3][1] =(unsigned short *)((unsigned long)fullled_ioremap+0xb8);full_led_addr[3][2] =(unsigned short *)((unsigned long)fullled_ioremap+0xba);

fullled_usage = 1;return 0;

}


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◦ 드라이버 소스 코드 (fullcolorled.c)int fullled_release(struct inode *minode, struct file *mfile) {

iounmap(fullled_ioremap);

release_mem_region((unsigned long)fullled_ioremap, FULLCOLORLED_ADDRESS_RANGE);fullled_usage = 0;return 0;

}

static int fullled_ioctl(struct file *file, unsigned int cmd,unsigned long arg){

switch(cmd){

case FULL_LED1: led_num = 0; break;case FULL_LED2: led_num = 1; break;case FULL_LED3: led_num = 2; break;case FULL_LED4: led_num = 3; break;case ALL_LED:led_num = 4; break;

}return 0;

}


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◦ 드라이버 소스 코드 (fullcolorled.c)ssize_t fullled_write(struct file *inode, const char *gdata, size_t length, loff_t *off_what){

int ret,i=0,j=0;unsigned char buf[3];ret = copy_from_user(buf,gdata,length);for(j=0;j<3;j++){

if(buf[j]%0x10 >= 0xA) buf[j]+=0x06;if(buf[j]%0x100 >= 0xA0) buf[j]+=0x60;

}

if(led_num != 4){

for(j=0;j<3;j++){

*full_led_addr[led_num][j] = buf[j];}

}else{

for(i=0;i<4;i++){

for(j=0;j<3;j++){

*full_led_addr[i][j] = buf[j];}

}}return length;

}


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◦ 드라이버 소스 코드 (fullcolorled.c)struct file_operations fullled_fops = {

.owner = THIS_MODULE,

.write = fullled_write,

.open = fullled_open,

.release = fullled_release,

.unlocked_ioctl = fullled_ioctl,};

static struct miscdevice fullled_driver = {.fops = &fullled_fops,.name = FULLCOLORLED_NAME,.minor = MISC_DYNAMIC_MINOR,

};

int fullled_init(void){

printk("driver: %s DRIVER INIT\n",FULLCOLORLED_NAME);

return misc_register(&fullled_driver);}

void fullled_exit(void){

misc_deregister(&fullled_driver);printk("driver: %s DRIVER EXIT\n",FULLCOLORLED_NAME);

}

module_init(fullled_init);module_exit(fullled_exit);

MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("Dual BSD/GPL");

Full Color LED JNI 라이브러리 작성 (1)

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◦ Full Color LED 드라이버를 안드로이드 앱에서 사용하기 위해서는 JNI 인터페이스 라이브러리가 필요

◦ 이 라이브러리는 구글의 NDK 를 이용하여 빌드


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◦ JNI 프로그램 소스 fullcolorled.c

#include <string.h>#include <jni.h>#include <stdio.h>#include <stdlib.h>#include <fcntl.h>#include <unistd.h>#include <termios.h>#include <sys/mman.h>#include <errno.h>

jint Java_package_fullLed_FullLedActivity_FLEDControl(JNIEnv* env, jobject thiz, jint led_num, jint val1, jint val2, jint val3){

int fd,ret;char buf[3];fd = open("/dev/fullcolorled",O_WRONLY);if (fd < 0) {

return -errno;}ret = (int)led_num;switch(ret){

case FULL_LED1: ioctl(fd,FULL_LED1); break;case FULL_LED2: ioctl(fd,FULL_LED2); break;case FULL_LED3: ioctl(fd,FULL_LED3); break;case FULL_LED4: ioctl(fd,FULL_LED4); break;case ALL_LED: ioctl(fd,ALL_LED); break;

}buf[0] = val1;buf[1] = val2;buf[2] = val3;

write(fd,buf,3);

close(fd);return ret;

}

jint : 함수의 리턴 타입package_fullLed : 안드로이드 앱의 package 이름FullLedActivity : 안드로이드 앱의 Activity 이름FLEDControl : 안드로이드 앱에서 사용할 함수 이름

#define FULL_LED1 9#define FULL_LED2 8#define FULL_LED3 7#define FULL_LED4 6#define ALL_LED 5


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◦ 안드로이드용 Makefile 인 Android.mk 작성하기 Android.mk

(1) 컴파일의 결과물로서 생성되는 라이브러리 이름이며 , NDK 에서는 이 이름 앞에 lib 가 추가되고 , 뒤에 .so 가 붙어 libfullcolorled.so 라는 파일이 만들어짐(2) 컴파일 할 소스 파일의 이름(3) Shared Library 용으로 빌드한다는 표시로서 확장자 .so 가 붙음

(1)(2) (3)

LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := fullcolorledLOCAL_SRC_FILES:= fullcolorled.c include $(BUILD_SHARED_LIBRARY)

Application name◦ FullLed

Project Name◦ FullLed

Package name◦ {name}. fullLed

Activity name◦ FullLedActivity

Layout name◦ main

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Full Color LED 안드로이드 App 구현 (1)

Full Color LED 안드로이드 App 구현 (2)<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="moriya.fullLed" android:versionCode="1" android:versionName="1.0" >

<uses-sdk android:minSdkVersion="10" />

<application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".FullLedActivity" android:label="@string/title_activity_full_led" android:screenOrientation="landscape" > <intent-filter> <action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application>

</manifest>

AndroidManifest.xml

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Full Color LED 안드로이드 App 구현 (3)<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/bgimage" android:orientation="vertical" android:padding="10dip" >

<RadioGroup android:id="@+id/fcl_LedGroup" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checkedButton="@+id/fcl_ledbut1" android:orientation="horizontal" >

<RadioButton android:id="@+id/fcl_ledbut1" android:layout_margin="3px" android:checked="true" android:gravity="right|center_vertical" android:text="LED1" android:textColor="@drawable/GRAY" />

<RadioButton android:id="@+id/fcl_ledbut2" android:layout_margin="3px" android:checked="false" android:gravity="right|center_vertical" android:text="LED2" android:textColor="@drawable/GRAY" />

main.xml (1)

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<RadioButton android:id="@+id/fcl_ledbut5" android:layout_margin="3px" android:checked="false" android:gravity="right|center_vertical" android:text="All" android:textColor="@drawable/GRAY" /> </RadioGroup>

Full Color LED 안드로이드 App 구현 (4) <RadioGroup android:id="@+id/fcl_ColorGruop" android:layout_width="wrap_content" android:layout_height="wrap_content" android:baselineAligned="true" android:checkedButton="@+id/fcl_red" android:orientation="horizontal" >

<RadioButton android:id="@+id/fcl_red" android:layout_margin="5px" android:checked="false" android:gravity="center|center_vertical" android:text="Red" android:textColor="@drawable/RED" />

<RadioButton android:id="@+id/fcl_blue" android:layout_margin="5px" android:checked="false" android:gravity="right|center_vertical" android:text="Blue" android:textColor="@drawable/BLUE" />

main.xml (2)

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<RadioButton android:id="@+id/fcl_green" android:layout_margin="5px" android:checked="false" android:gravity="right|center_vertical" android:text="Green" android:textColor="@drawable/GREEN" />

<RadioButton android:id="@+id/fcl_random" android:layout_margin="5px" android:checked="false" android:gravity="right|center_vertical" android:text="Random" android:textColor="@drawable/GRAY" />

<RadioButton android:id="@+id/fcl_off" android:layout_margin="5px" android:checked="true" android:gravity="right|center_vertical" android:text="Off" android:textColor="@drawable/GRAY" /> </RadioGroup>

Full Color LED 안드로이드 App 구현 (5) <SeekBar android:id="@+id/fcl_seekBar_red" android:layout_width="400dip" android:layout_height="wrap_content" android:layout_marginTop="10px" android:max="100" />

<SeekBar android:id="@+id/fcl_seekBar_green" android:layout_width="400dip" android:layout_height="wrap_content" android:layout_marginTop="10px" android:max="100" />

<SeekBar android:id="@+id/fcl_seekBar_blue" android:layout_width="400dip" android:layout_height="wrap_content" android:layout_marginTop="10px" android:max="100" />

</LinearLayout>

main.xml (3)

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Full Color LED 안드로이드 App 구현 (6)<?xml version="1.0" encoding="utf-8"?><resources>

<drawable name="RED">#ff0000</drawable> <drawable name="BLUE">#0000ff</drawable> <drawable name="GREEN">#008000</drawable> <drawable name="YELLOW">#ffff00</drawable> <drawable name="GRAY">#808080</drawable> <drawable name="screen_background_black">#ff000000</drawable> <drawable name="translucent_background">#e0000000</drawable> <drawable name="transparent_background">#00000000</drawable>

<color name="solid_red">#f00</color> <color name="solid_blue">#0000ff</color> <color name="solid_green">#f0f0</color> <color name="solid_yellow">#ffffff00</color>

<drawable name="BLACK">#000000</drawable> <drawable name="WHITE">#ffffffff</drawable>

</resources>

color.xml : ‘res/values’ 에 추가

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package moriya.fullLed;

import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.view.View;import android.widget.RadioButton;import android.widget.SeekBar;

public class FullLedActivity extends Activity { static { System.loadLibrary("fullcolorled"); }

public native int FLEDControl(int led_num, int val1, int val2, int val3);

static SeekBar[] sb; static int temp; int[] led_val;

@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); led_val = new int[4]; led_val[0] = 9; for (int i = 1; i < 4; i++) { led_val[i] = 0; }

Full Color LED 안드로이드 App 구현 (7)FullLedActivity.java (1)

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findViewById(R.id.fcl_ledbut1).setOnClickListener(mLedButtonListener); findViewById(R.id.fcl_ledbut2).setOnClickListener(mLedButtonListener); findViewById(R.id.fcl_ledbut3).setOnClickListener(mLedButtonListener); findViewById(R.id.fcl_ledbut4).setOnClickListener(mLedButtonListener); findViewById(R.id.fcl_ledbut5).setOnClickListener(mLedButtonListener);

findViewById(R.id.fcl_red).setOnClickListener(mColorButtonListener); findViewById(R.id.fcl_green).setOnClickListener(mColorButtonListener); findViewById(R.id.fcl_blue).setOnClickListener(mColorButtonListener); findViewById(R.id.fcl_random).setOnClickListener(mColorButtonListener); findViewById(R.id.fcl_off).setOnClickListener(mColorButtonListener);

// sb = new SeekBar[3]; sb[0] = (SeekBar) findViewById(R.id.fcl_seekBar_red); sb[1] = (SeekBar) findViewById(R.id.fcl_seekBar_green); sb[2] = (SeekBar) findViewById(R.id.fcl_seekBar_blue);

sb[0].setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { public void onStopTrackingTouch(SeekBar arg0) { // TODO Auto-generated method stub temp = arg0.getProgress(); led_val[1] = temp; FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); }

public void onStartTrackingTouch(SeekBar arg0) { // TODO Auto-generated method stub temp = arg0.getProgress(); }


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public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) { // TODO Auto-generated method stub temp = arg0.getProgress(); led_val[1] = temp; FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); } });

sb[1].setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

public void onStopTrackingTouch(SeekBar arg0) { // TODO Auto-generated method stub temp = arg0.getProgress(); led_val[2] = temp; FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); }


public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) { // TODO Auto-generated method stub temp = arg0.getProgress(); led_val[2] = temp; FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); } });


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sb[2].setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

public void onStopTrackingTouch(SeekBar arg0) { // TODO Auto-generated method stub temp = arg0.getProgress(); led_val[3] = temp; FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); }


public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) { // TODO Auto-generated method stub temp = arg0.getProgress(); led_val[3] = temp; FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); } }); }

RadioButton.OnClickListener mLedButtonListener = new RadioButton.OnClickListener() { public void onClick(View v) {

switch (v.getId()) { case R.id.fcl_ledbut1: led_val[0] = 9; break; case R.id.fcl_ledbut2: led_val[0] = 8; break; case R.id.fcl_ledbut3: led_val[0] = 7; break; case R.id.fcl_ledbut4: led_val[0] = 6; break; case R.id.fcl_ledbut5: led_val[0] = 5; break; }


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led_val[1] = sb[0].getProgress(); led_val[2] = sb[1].getProgress(); led_val[3] = sb[2].getProgress(); FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); } };

RadioButton.OnClickListener mColorButtonListener = new RadioButton.OnClickListener() { public void onClick(View v) {

switch (v.getId()) { case R.id.fcl_red: led_val[1] = 100; led_val[2] = 0; led_val[3] = 0; break; case R.id.fcl_green: led_val[1] = 0; led_val[2] = 0; led_val[3] = 100; break; case R.id.fcl_blue: led_val[1] = 0; led_val[2] = 100; led_val[3] = 0; break; case R.id.fcl_random: led_val[1] = (int) (Math.random() * 101); led_val[2] = (int) (Math.random() * 101); led_val[3] = (int) (Math.random() * 101); break; case R.id.fcl_off: led_val[1] = 0; led_val[2] = 0; led_val[3] = 0; break; }


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FLEDControl(led_val[0], led_val[1], led_val[2], led_val[3]); sb[0].setProgress(led_val[1]); sb[1].setProgress(led_val[2]); sb[2].setProgress(led_val[3]); } };

}


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빌드 순서

◦ JNI 소스인 fullcolorled.c 와 Android.mk 파일을프로젝트의 jni 폴더에 추가

◦ “ 윈도키 +r” 을 입력하여 실행창을 오픈한 다음 , “cmd” 를 입력하여 커맨드 창을 오픈함

◦ 안드로이드 App 프로젝트가 있는 폴더로 이동

◦ 빌드 명령을 실행 빌드를 위해 프로젝트 폴더에 아래와 같은 명령어를 입력

> /EmbeddedSystem/Android/ndk/ndk-build

◦ 빌드가 성공하면 , libfullcolorled.so 파일이 생성된 것을 확인

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JNI 라이브러리 빌드

결과 ( 에뮬레이터 )

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결과 ( 타겟보드 )

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2012 내장형 시스템 설계 2012. 11. 21. full color led 디바이스 구성 full color led...

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