MTK LIGHT 代码分析

项目上需要做些客制化的东西，需要用到light 一块的东西，好久以前看过，但是没有记录下来，这次重新看看，然后记录下来。

lightservice start

private void startCoreServices() {// Manages LEDs and display backlight.mSystemServiceManager.startService(LightsService.class);

应用中怎么用

get service

    final LightsManager lights = getLocalService(LightsManager.class);mNotificationLight = lights.getLight(LightsManager.LIGHT_ID_NOTIFICATIONS);返回一个 lightmanager, 只有一个方法。public abstract class LightsManager {public static final int LIGHT_ID_BACKLIGHT = 0;public static final int LIGHT_ID_KEYBOARD = 1;public static final int LIGHT_ID_BUTTONS = 2;public static final int LIGHT_ID_BATTERY = 3;public static final int LIGHT_ID_NOTIFICATIONS = 4;public static final int LIGHT_ID_ATTENTION = 5;public static final int LIGHT_ID_BLUETOOTH = 6;public static final int LIGHT_ID_WIFI = 7;public static final int LIGHT_ID_COUNT = 8;public abstract Light getLight(int id);}

关掉

    mNotificationLight.turnOff();

blink

    NotificationLight.setFlashing(ledARGB, Light.LIGHT_FLASH_TIMED,ledOnMS, ledOffMS);

setFlashing 从service 到 HAL分析

LightsManager getLight 实现

private final LightsManager mService = new LightsManager() {@Overridepublic com.android.server.lights.Light getLight(int id) {if (id < LIGHT_ID_COUNT) {return mLights[id];} else {return null;}}
};final LightImpl mLights[] = new LightImpl[LightsManager.LIGHT_ID_COUNT];  LightsService 成员变量

setFlashing在 LightImpl 中实现 ###

private final class LightImpl extends Light {public void setFlashing(int color, int mode, int onMS, int offMS) {synchronized (this) {setLightLocked(color, mode, onMS, offMS, BRIGHTNESS_MODE_USER);}}

————》

private void setLightLocked(int color, int mode, int onMS, int offMS, int brightnessMode) {if (color != mColor || mode != mMode || onMS != mOnMS || offMS != mOffMS) {if (DEBUG) Slog.v(TAG, "setLight #" + mId + ": color=#"+ Integer.toHexString(color));mColor = color;mMode = mode;mOnMS = onMS;mOffMS = offMS;Trace.traceBegin(Trace.TRACE_TAG_POWER, "setLight(" + mId + ", " + color + ")");try {setLight_native(mNativePointer, mId, color, mode, onMS, offMS, brightnessMode);} finally {Trace.traceEnd(Trace.TRACE_TAG_POWER);}}}

————》

 native 端 setLight_native， 在文件 com_android_server_lights_LightsService.cpp (35_smt\frameworks\base\services\core\jni) 中static void setLight_native(JNIEnv *env, jobject clazz, jlong ptr,jint light, jint colorARGB, jint flashMode, jint onMS, jint offMS, jint brightnessMode)
{Devices* devices = (Devices*)ptr;light_state_t state;if (light < 0 || light >= LIGHT_COUNT || devices->lights[light] == NULL) {return ;}memset(&state, 0, sizeof(light_state_t));state.color = colorARGB;state.flashMode = flashMode;state.flashOnMS = onMS;state.flashOffMS = offMS;state.brightnessMode = brightnessMode;{ALOGD_IF_SLOW(50, "Excessive delay setting light");**devices->lights[light]->set_light(devices->lights[light], &state);**}
}

————–》

Lights.c (35_smt\vendor\mediatek\proprietary\hardware\liblights)static int open_lights(const struct hw_module_t* module, char const* name,struct hw_device_t** device)
{int (*set_light)(struct light_device_t* dev,struct light_state_t const* state);// 根据NAME 来分辨操作，  #define LIGHT_ID_BACKLIGHT          "backlight" 在light.h 中定义。if (0 == strcmp(LIGHT_ID_BACKLIGHT, name)) {set_light = set_light_backlight;} else if (0 == strcmp(LIGHT_ID_KEYBOARD, name)) {set_light = set_light_keyboard;}else if (0 == strcmp(LIGHT_ID_BUTTONS, name)) {set_light = set_light_buttons;}else if (0 == strcmp(LIGHT_ID_BATTERY, name)) {set_light = set_light_battery;}else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name)) {set_light = set_light_notifications;}else if (0 == strcmp(LIGHT_ID_ATTENTION, name)) {set_light = set_light_attention;}else {return -EINVAL;}pthread_once(&g_init, init_globals);struct light_device_t *dev = malloc(sizeof(struct light_device_t));memset(dev, 0, sizeof(*dev));dev->common.tag = HARDWARE_DEVICE_TAG;dev->common.version = 0;dev->common.module = (struct hw_module_t*)module;dev->common.close = (int (*)(struct hw_device_t*))close_lights;dev->set_light = set_light;*device = (struct hw_device_t*)dev;return 0;
}static struct hw_module_methods_t lights_module_methods = {.open =  open_lights,
};/** The lights Module*/
struct hw_module_t HAL_MODULE_INFO_SYM = {.tag = HARDWARE_MODULE_TAG,//.version_major = 1,//.version_minor = 0,.id = LIGHTS_HARDWARE_MODULE_ID,.name = "MTK lights Module",.author = "MediaTek",.methods = &lights_module_methods,
};

————》
我们的是LIGHT_ID_NOTIFICATIONS，接下来我们来看 set_light_notifications

static int set_light_notifications(struct light_device_t* dev,struct light_state_t const* state)
{pthread_mutex_lock(&g_lock);g_notification = *state;ALOGV("set_light_notifications g_trackball=%d color=0x%08x",g_trackball, state->color);if (g_haveTrackballLight) {handle_trackball_light_locked(dev);}handle_speaker_battery_locked(dev);pthread_mutex_unlock(&g_lock);return 0;
}static void handle_speaker_battery_locked(struct light_device_t* dev)
{if (is_lit(&g_battery)) {set_speaker_light_locked(dev, &g_battery);} else {set_speaker_light_locked(dev, &g_battery); /*Turkey workaround: notification and Low battery case, IPO bootup, NLED cannot blink*/ 处理低电压下情况set_speaker_light_locked(dev, &g_notification);}
}

我们的是LIGHT_ID_NOTIFICATIONS 会比较复杂，如果是 LIGHT_ID_KEYBOARD ，则非常简单：

static int set_light_keyboard(struct light_device_t* dev,struct light_state_t const* state)
{int err = 0;int on = is_lit(state);pthread_mutex_lock(&g_lock);err = write_int(KEYBOARD_FILE, on?255:0);pthread_mutex_unlock(&g_lock);return err;
}

直接写sys file, 然后就到kernel中去了。

——-》对于notification light, 不管低电的特殊情况，我们来关注 set_speaker_light_locked(dev, &g_notification);

static int set_speaker_light_locked(struct light_device_t* dev,struct light_state_t const* state)
{int len;int alpha, red, green, blue;int onMS, offMS;unsigned int colorRGB;switch (state->flashMode) {case LIGHT_FLASH_TIMED:onMS = state->flashOnMS;offMS = state->flashOffMS;break;case LIGHT_FLASH_NONE:default:onMS = 0;offMS = 0;break;}colorRGB = state->color;#ifdef LIGHTS_DBG_ONALOGD("set_led_state colorRGB=%08X, onMS=%d, offMS=%d\n",colorRGB, onMS, offMS);
#endifalpha = (colorRGB >> 24) & 0xFF;if (alpha) {red = (colorRGB >> 16) & 0xFF;green = (colorRGB >> 8) & 0xFF;blue = colorRGB & 0xFF;} else { // alpha = 0 means turn the LED offred = green = blue = 0;}if (red) {blink_green(0, 0, 0);blink_blue(0, 0, 0);blink_red(red, onMS, offMS);}else if (green) {blink_red(0, 0, 0);blink_blue(0, 0, 0);blink_green(green, onMS, offMS);}else if (blue) {blink_red(0, 0, 0);blink_green(0, 0, 0);blink_blue(blue, onMS, offMS);}else {blink_red(0, 0, 0);blink_green(0, 0, 0);blink_blue(0, 0, 0);}return 0;
}

————》接下来我们抽一个来看

static int
blink_blue(int level, int onMS, int offMS)
{static int preStatus = 0; // 0: off, 1: blink, 2: no blinkint nowStatus;int i = 0;if (level == 0)nowStatus = 0;else if (onMS && offMS)nowStatus = 1;elsenowStatus = 2;if (preStatus == nowStatus)return -1;#ifdef LIGHTS_DBG_ONALOGD("blink_blue, level=%d, onMS=%d, offMS=%d\n", level, onMS, offMS);
#endifif (nowStatus == 0) {write_int(BLUE_LED_FILE, 0);}else if (nowStatus == 1) {
//          write_int(BLUE_LED_FILE, level); // default full brightnesswrite_str(BLUE_TRIGGER_FILE, "timer");  //  先写此 /sys/class/leds/blue/trigger  sys文件路径while (((access(BLUE_DELAY_OFF_FILE, F_OK) == -1) || (access(BLUE_DELAY_OFF_FILE, R_OK|W_OK) == -1)) && i<10) {ALOGD("BLUE_DELAY_OFF_FILE doesn't exist or cannot write!!\n");led_wait_delay(5);//sleep 5ms for wait kernel LED class create led delay_off/delay_on node of fsi++;}write_int(BLUE_DELAY_OFF_FILE, offMS);    "/sys/class/leds/blue/delay_off";write_int(BLUE_DELAY_ON_FILE, onMS);   /sys/class/leds/blue/delay_on}else {write_str(BLUE_TRIGGER_FILE, "none");write_int(BLUE_LED_FILE, 255); // default full brightness}preStatus = nowStatus;return 0;
}

kernel light 分析

probe 分析

Leds_drv.c (35_smt\kernel-3.10\drivers\misc\mediatek\leds)static int __init mt65xx_leds_probe(struct platform_device *pdev)
{int i;int ret, rc;struct cust_mt65xx_led *cust_led_list = mt_get_cust_led_list(); ****************************************************************************************************************static struct cust_mt65xx_led cust_led_list[MT65XX_LED_TYPE_TOTAL] = {{"red",               MT65XX_LED_MODE_NONE, -1,{0}},{"green",             MT65XX_LED_MODE_NONE, -1,{0}},{"blue",              MT65XX_LED_MODE_NONE, -1,{0}},{"jogball-backlight", MT65XX_LED_MODE_NONE, -1,{0}},{"keyboard-backlight",MT65XX_LED_MODE_NONE, -1,{0}},{"button-backlight",  MT65XX_LED_MODE_NONE, -1,{0}},{"lcd-backlight",     MT65XX_LED_MODE_CUST_BLS_PWM, (long)disp_bls_set_backlight,{0}},};****************************************************************************************************************LEDS_DRV_DEBUG("[LED]%s\n", __func__);get_div_array();for (i = 0; i < MT65XX_LED_TYPE_TOTAL; i++) {  if (cust_led_list[i].mode == MT65XX_LED_MODE_NONE) {g_leds_data[i] = NULL;continue;}g_leds_data[i] = kzalloc(sizeof(struct mt65xx_led_data), GFP_KERNEL);if (!g_leds_data[i]) {ret = -ENOMEM;goto err;}g_leds_data[i]->cust.mode = cust_led_list[i].mode;g_leds_data[i]->cust.data = cust_led_list[i].data;g_leds_data[i]->cust.name = cust_led_list[i].name;g_leds_data[i]->cdev.name = cust_led_list[i].name;g_leds_data[i]->cust.config_data = cust_led_list[i].config_data;    /* bei add */g_leds_data[i]->cdev.brightness_set = mt65xx_led_set;   // 所有的操作都在这3个函数中，后面来详细分析。g_leds_data[i]->cdev.blink_set = mt65xx_blink_set;INIT_WORK(&g_leds_data[i]->work, mt_mt65xx_led_work);ret = led_classdev_register(&pdev->dev, &g_leds_data[i]->cdev);if (strcmp(g_leds_data[i]->cdev.name, "lcd-backlight") == 0) {rc = device_create_file(g_leds_data[i]->cdev.dev, &dev_attr_duty);if (rc) {LEDS_DRV_DEBUG("[LED]device_create_file duty fail!\n");}rc = device_create_file(g_leds_data[i]->cdev.dev, &dev_attr_div);if (rc) {LEDS_DRV_DEBUG("[LED]device_create_file duty fail!\n");}rc = device_create_file(g_leds_data[i]->cdev.dev, &dev_attr_frequency);if (rc) {LEDS_DRV_DEBUG("[LED]device_create_file duty fail!\n");}rc = device_create_file(g_leds_data[i]->cdev.dev, &dev_attr_pwm_register);if (rc) {LEDS_DRV_DEBUG("[LED]device_create_file duty fail!\n");}bl_setting = &g_leds_data[i]->cust;}if (ret)goto err;}
#ifdef CONTROL_BL_TEMPERATURElast_level = 0;limit = 255;limit_flag = 0;current_level = 0;LEDS_DRV_DEBUG("[LED]led probe last_level = %d, limit = %d, limit_flag = %d, current_level = %d\n",last_level, limit, limit_flag, current_level);
#endifreturn 0;err:if (i) {for (i = i - 1; i >= 0; i--) {if (!g_leds_data[i])continue;led_classdev_unregister(&g_leds_data[i]->cdev);cancel_work_sync(&g_leds_data[i]->work);kfree(g_leds_data[i]);g_leds_data[i] = NULL;}}return ret;
}

——–》下面来详细分析上面3个函数，先看mt65xx_led_set

static void mt65xx_led_set(struct led_classdev *led_cdev, enum led_brightness level)
{struct mt65xx_led_data *led_data = container_of(led_cdev, struct mt65xx_led_data, cdev);if (strcmp(led_data->cust.name, "lcd-backlight") == 0) { 如果是背光，做些特殊处理
#ifdef CONTROL_BL_TEMPERATUREmutex_lock(&bl_level_limit_mutex);current_level = level;/* LEDS_DRV_DEBUG("brightness_set_cust:current_level=%d\n", current_level); */if (0 == limit_flag) {last_level = level;/* LEDS_DRV_DEBUG("brightness_set_cust:last_level=%d\n", last_level); */} else {if (limit < current_level) {level = limit;LEDS_DRV_DEBUG("backlight_set_cust: control level=%d\n", level);}}mutex_unlock(&bl_level_limit_mutex);
#endif}mt_mt65xx_led_set(led_cdev, level);
}

———》mt_mt65xx_led_set

void mt_mt65xx_led_set(struct led_classdev *led_cdev, enum led_brightness level)
{struct mt65xx_led_data *led_data =container_of(led_cdev, struct mt65xx_led_data, cdev);//unsigned long flags;//spin_lock_irqsave(&leds_lock, flags);#ifdef CONFIG_MTK_AAL_SUPPORT   if(led_data->level != level){led_data->level = level;if(strcmp(led_data->cust.name,"lcd-backlight") != 0){LEDS_DEBUG("[LED]Set NLED directly %d at time %lu\n",led_data->level,jiffies);schedule_work(&led_data->work);             }else{LEDS_DEBUG("[LED]Set Backlight directly %d at time %lu\n",led_data->level,jiffies);//mt_mt65xx_led_set_cust(&led_data->cust, led_data->level); disp_aal_notify_backlight_changed( (((1 << MT_LED_INTERNAL_LEVEL_BIT_CNT) - 1)*level + 127)/255 );}}
#else                       // do something only when level is changedif(led_data->level != level){led_data->level = level;if(strcmp(led_data->cust.name,"lcd-backlight") != 0)  非背光，直接到 在工作队列中处理，WORK{LEDS_DEBUG("[LED]Set NLED directly %d at time %lu\n",led_data->level,jiffies);schedule_work(&led_data->work);}else{LEDS_DEBUG("[LED]Set Backlight directly %d at time %lu\n",led_data->level,jiffies);if(MT65XX_LED_MODE_CUST_BLS_PWM == led_data->cust.mode)  背光，直接设置。 背光相应快。{mt_mt65xx_led_set_cust(&led_data->cust, ((((1 << MT_LED_INTERNAL_LEVEL_BIT_CNT) - 1)*level + 127)/255));}else{mt_mt65xx_led_set_cust(&led_data->cust, led_data->level);   }}}//spin_unlock_irqrestore(&leds_lock, flags);
#endif
//    if(0!=aee_kernel_Powerkey_is_press())
//      aee_kernel_wdt_kick_Powkey_api("mt_mt65xx_led_set",WDT_SETBY_Backlight);
}

—–》调用WORK，会直接到WORK函数中处理，即mt_mt65xx_led_work

void mt_mt65xx_led_work(struct work_struct *work)
{struct mt65xx_led_data *led_data =container_of(work, struct mt65xx_led_data, work);LEDS_DEBUG("[LED]%s:%d\n", led_data->cust.name, led_data->level);mutex_lock(&leds_mutex);mt_mt65xx_led_set_cust(&led_data->cust, led_data->level);mutex_unlock(&leds_mutex);;
}
可以看出 实际上还是调用的 mt_mt65xx_led_set_cust处理，上面背光的特殊处理确实只是为了速度更快写而已。

———-》

int mt_mt65xx_led_set_cust(struct cust_mt65xx_led *cust, int level)
{switch (cust->mode) {  根据不同的模式来操作case MT65XX_LED_MODE_PWM:if(strcmp(cust->name,"lcd-backlight") == 0){bl_brightness_hal = level;if(level == 0){mt_pwm_disable(cust->data, cust->config_data.pmic_pad);}else{if (BacklightLevelSupport == BACKLIGHT_LEVEL_PWM_256_SUPPORT)level = brightness_mapping(tmp_level);elselevel = brightness_mapto64(tmp_level);  mt_backlight_set_pwm(cust->data, level, bl_div_hal,&cust->config_data);}bl_duty_hal = level;    }else{if(level == 0){led_tmp_setting.nled_mode = NLED_OFF;mt_led_set_pwm(cust->data,&led_tmp_setting);mt_pwm_disable(cust->data, cust->config_data.pmic_pad);}else{led_tmp_setting.nled_mode = NLED_ON;mt_led_set_pwm(cust->data,&led_tmp_setting);}}return 1;case MT65XX_LED_MODE_GPIO:  用函数指针去做相应的操作LEDS_DEBUG("brightness_set_cust:go GPIO mode!!!!!\n");return ((cust_set_brightness)(cust->data))(level);case MT65XX_LED_MODE_PMIC://for button baclight used SINK channel, when set button ISINK, don't do disable other ISINK channelif((strcmp(cust->name,"button-backlight") == 0)) {if(button_flag==false) {switch (cust->data) {case MT65XX_LED_PMIC_NLED_ISINK0:button_flag_isink0 = 1;break;case MT65XX_LED_PMIC_NLED_ISINK1:button_flag_isink1 = 1;break;case MT65XX_LED_PMIC_NLED_ISINK2:button_flag_isink2 = 1;break;case MT65XX_LED_PMIC_NLED_ISINK3:button_flag_isink3 = 1;break;default:break;}button_flag=true;}}                   return mt_brightness_set_pmic(cust->data, level, bl_div_hal);  PMIC的case MT65XX_LED_MODE_CUST_LCM:if (strcmp(cust->name, "lcd-backlight") == 0) {bl_brightness_hal = level;}LEDS_DEBUG("brightness_set_cust:backlight control by LCM\n");return ((cust_brightness_set)(cust->data))(level, bl_div_hal);  可以自定义背光的case MT65XX_LED_MODE_CUST_BLS_PWM:  实际上背光用的是 这个： MT65XX_LED_MODE_CUST_BLS_PWMif (strcmp(cust->name, "lcd-backlight") == 0) {bl_brightness_hal = level;}return ((cust_set_brightness)(cust->data))(level);case MT65XX_LED_MODE_NONE:default:break;}
}

————-》 mt65xx_blink_set 分析

static int mt65xx_blink_set(struct led_classdev *led_cdev,unsigned long *delay_on, unsigned long *delay_off)
{if (mt_mt65xx_blink_set(led_cdev, delay_on, delay_off)) {return -1;} else {return 0;}
}

———-》

int  mt_mt65xx_blink_set(struct led_classdev *led_cdev,unsigned long *delay_on,unsigned long *delay_off)
{struct mt65xx_led_data *led_data =container_of(led_cdev, struct mt65xx_led_data, cdev);static int got_wake_lock = 0;struct nled_setting nled_tmp_setting = {0,0,0};// only allow software blink when delay_on or delay_off changedif (*delay_on != led_data->delay_on || *delay_off != led_data->delay_off) {led_data->delay_on = *delay_on;led_data->delay_off = *delay_off;if (led_data->delay_on && led_data->delay_off) { // enable blinkled_data->level = 255; // when enable blink  then to set the level  (255)//AP PWM all support OLD mode if(led_data->cust.mode == MT65XX_LED_MODE_PWM){nled_tmp_setting.nled_mode = NLED_BLINK;nled_tmp_setting.blink_off_time = led_data->delay_off;nled_tmp_setting.blink_on_time = led_data->delay_on;mt_led_set_pwm(led_data->cust.data,&nled_tmp_setting);  PWM硬件模块能有此模式，配置好后不需要CPU参与。return 0;}else if((led_data->cust.mode == MT65XX_LED_MODE_PMIC) && (led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK0|| led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK1 || led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK2|| led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK3)){nled_tmp_setting.nled_mode = NLED_BLINK;nled_tmp_setting.blink_off_time = led_data->delay_off;nled_tmp_setting.blink_on_time = led_data->delay_on;mt_led_blink_pmic(led_data->cust.data, &nled_tmp_setting);return 0;}               else if (!got_wake_lock) {  没有实现，需要CPU参与的，需要获取锁，实际上GPIO BLINK可以在这里实现。wake_lock(&leds_suspend_lock);got_wake_lock = 1;}}else if (!led_data->delay_on && !led_data->delay_off) { // disable blink//AP PWM all support OLD mode if(led_data->cust.mode == MT65XX_LED_MODE_PWM){nled_tmp_setting.nled_mode = NLED_OFF;mt_led_set_pwm(led_data->cust.data,&nled_tmp_setting);return 0;}else if((led_data->cust.mode == MT65XX_LED_MODE_PMIC) && (led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK0|| led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK1 || led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK2|| led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK3)){mt_brightness_set_pmic(led_data->cust.data, 0, 0);return 0;}       else if (got_wake_lock) {wake_unlock(&leds_suspend_lock);got_wake_lock = 0;}}return -1;}// delay_on and delay_off are not changedreturn 0;
}

MTK LIGHT 代码分析相关推荐

host速度 mtk usb_mtk-usb代码分析之usb gadget
基于mt6750T,Android 7.0,kernel 3.18.35,本文主要从USB设备的角度进行分析.(代码部分有省略) 我们的android手机通过usb连入电脑,可以选择多种模式,例如传输 ...
host速度 mtk usb_mtk-usb代码分析之枚举过程
基于mt6750T,Android 7.0,kernel 3.18.35,本文主要简述了USB的枚举过程,主要是从host的角度来看. 一.USB的拓扑结构简单来说,USB由host和device两 ...
canvas动画科技园_Canvas 写的酷炫动画代码分析
霓虹灯线形成的自发六边形,随机性生成火花在看这篇文章时,里面有个动画的示例(如上图),然后感觉有点很酷炫,就打算了解一下怎么写的.( 先上代码示例链接) 前景提要需要先确保你还记得三角函数的知识. ...
mtk-lk display代码分析
一.mtk显示架构分析代码时会看到ddp-xxx开头的文件,ddp指的是display data path,下面是6582的ddp结构,比较老的芯片,新的没找到,但是大体流程应该是类似的. 1.ro ...
Unity3D案例太空射击（Space Shooter）流程介绍与代码分析（上）
最近开始接触游戏制作,用Unity制作一些简单的游戏进行入门.这几篇博客总结了Space Shooter的制作流程,并对代码进行了分析.一是方便自己日后进行回顾与补充,二是为了让让更多的游戏爱好者接触 ...
Networknt Light 4J分析报告
Networknt Light 4J分析报告一.整体介绍 Light 4J是networknt.com的核心产品.一个基于Java SE快速.轻量级并且高效的微服务框架.其包含十多个子模块,用于不同 ...
20145236《网络攻防》Exp4 恶意代码分析
20145236<网络攻防>Exp4 恶意代码分析一.基础问题回答如果在工作中怀疑一台主机上有恶意代码,但只是猜想,所有想监控下系统一天天的到底在干些什么.请设计下你想监控的操作有哪些 ...
C#中类的继承 override virtual new的作用以及代码分析
继承中override virtual new的作用 virtual 父类中需要注明允许重写的方法: override 子类中必须显示声明该方法是重写的父类中的方法: new 子类中忽略父类的已存在的 ...
2017.4.18 静态代码分析工具sonarqube+sonar-runner的安装配置及使用
配置成功后的代码分析页面: 可以看到对复杂度.语法使用.重复度等等都做了分析,具体到了每一个方法和每一句代码. 四种使用方式: sonarqube + sonar-runner sonarqube + ...

MTK LIGHT 代码分析

MTK LIGHT 代码分析

lightservice start

应用中怎么用

get service

关掉

blink

setFlashing 从service 到 HAL分析

LightsManager getLight 实现

setFlashing在 LightImpl 中实现 ###

kernel light 分析

probe 分析

MTK LIGHT 代码分析相关推荐

最新文章

热门文章