1. 2012 내장형 시스템 설계 2012. 11. 21

2.  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 2

3. 3 ◦ FPGA 내부의 컨트롤러에 의해 제어됨

4. 4 ◦ 9bit 로 구성된 12 개의 레지스터 Full Color LED1 Red0x0500_00A08-0 : LED PWM Data 0x000 ~ 0x100 Full Color LED1 Green0x0500_00A28-0 : LED PWM Data Full Color LED1 Blue0x0500_00A48-0 : LED PWM Data Full Color LED2 Red0x0500_00A68-0 : LED PWM Data Full Color LED2 Green0x0500_00A88-0 : LED PWM Data Full Color LED2 Blue0x0500_00AA8-0 : LED PWM Data Full Color LED3 Red0x0500_00B08-0 : LED PWM Data Full Color LED3 Green0x0500_00B28-0 : LED PWM Data Full Color LED3 Blue0x0500_00B48-0 : LED PWM Data Full Color LED4 Red0x0500_00B68-0 : LED PWM Data Full Color LED4 Green0x0500_00B88-0 : LED PWM Data Full Color LED4 Blue0x0500_00BA8-0 : LED PWM Data

5. 5 ◦ 드라이버 코드 위치  “~/linux-3.0.15-s4210/drivers/hanback“ 디렉토리에 포 함되어있음 ◦ 드라이버 소스 코드 (fullcolorled.c) #include

6. 6 ◦ 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_LED19 #define FULL_LED28 #define FULL_LED37 #define FULL_LED46 #define ALL_LED5 static int fullled_usage = 0; static int led_num=0; static unsigned long *fullled_ioremap; static unsigned short *full_led_addr[4][3];

7. 7 ◦ 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); } elseprintk("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; }

8. 8 ◦ 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; }

9. 9 ◦ 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; }

10. 10 ◦ 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");

11. 11 ◦ Full Color LED 드라이버를 안드로이드 앱에서 사용하기 위해서는 JNI 인 터페이스 라이브러리가 필요 ◦ 이 라이브러리는 구글의 NDK 를 이용하여 빌드

12. 12 ◦ JNI 프로그램 소스  fullcolorled.c #include 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 타입 package_fullLed : 안드로이드 앱의 package 이름 FullLedActivity : 안드로이드 앱의 Activity 이름 FLEDControl : 안드로이드 앱에서 사용할 함수 이름 #define FULL_LED19 #define FULL_LED28 #define FULL_LED37 #define FULL_LED46 #define ALL_LED5

13. 13 ◦ 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:= fullcolorled LOCAL_SRC_FILES:= fullcolorled.c include $(BUILD_SHARED_LIBRARY)

14.  Application name ◦ FullLed  Project Name ◦ FullLed  Package name ◦ {name}. fullLed  Activity name ◦ FullLedActivity  Layout name ◦ main 14

15. <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" > AndroidManifest.xml 15

16. <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) 16 <RadioButton android:id="@+id/fcl_ledbut3" android:layout_margin="3px" android:checked="false" android:gravity="right|center_vertical" android:text="LED3" android:textColor="@drawable/GRAY" /> <RadioButton android:id="@+id/fcl_ledbut4" android:layout_margin="3px" android:checked="false" android:gravity="right|center_vertical" android:text="LED4" android:textColor="@drawable/GRAY" /> <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" />

17. <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) 17 <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" />

18. <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" /> main.xml (3) 18

19. #ff0000 #0000ff #008000 #ffff00 #808080 #ff000000 #e0000000 #00000000 #f00 #0000ff #f0f0 #ffffff00 #000000 #ffffffff color.xml : ‘res/values’ 에 추가 19

20. 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; } FullLedActivity.java (1) 20

21. 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(); } FullLedActivity.java (2) 21

22. 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 onStartTrackingTouch(SeekBar arg0) { // TODO Auto-generated method stub temp = arg0.getProgress(); } 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]); } }); FullLedActivity.java (3) 22

23. 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 onStartTrackingTouch(SeekBar arg0) { // TODO Auto-generated method stub temp = arg0.getProgress(); } 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; } FullLedActivity.java (4) 23

24. 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; } FullLedActivity.java (5) 24

25. 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]); } }; } FullLedActivity.java (6) 25

26.  빌드 순서 ◦ JNI 소스인 fullcolorled.c 와 Android.mk 파일을 프로젝트의 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 26

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