android mtk6592 添加led三色灯，红色蓝色绿色

本文的led是三色的分别是红色，蓝色，绿色

红色：低电量，电量低于15%

蓝色：充电，电量在15%到90%之间

绿色：电量在90%到100%

开机充电情况：

驱动层：

mediatek\custom\**project\lk\cust_leds.c

static struct cust_mt65xx_led cust_led_list[MT65XX_LED_TYPE_TOTAL] = {{"red",               MT65XX_LED_MODE_PMIC, MT65XX_LED_PMIC_NLED_ISINK0,{0,0,0,0,0}},{"green",             MT65XX_LED_MODE_PMIC, MT65XX_LED_PMIC_NLED_ISINK1,{0,0,0,0,0}},{"blue",              MT65XX_LED_MODE_NONE, MT65XX_LED_PMIC_NLED_ISINK2,{0,0,0,0,0}},{"jogball-backlight", MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},{"keyboard-backlight",MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},{"button-backlight",  MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},{"lcd-backlight",     MT65XX_LED_MODE_CUST_BLS_PWM, (int)disp_bls_set_backlight,{0,0,0,0,0}},};

上层：

aplse\frameworks\base\core\res\res\values\config.xml

上层配置文件，修改开机充电模式下led显示情况

     15    控制低电量的最低值        20        #ffffffff        500        2000        0xFFFF0000    低电量红色        0xFF0000FF     15到90 蓝色        0xFF00FF00    90以上绿色

apls\ frameworks\base\services\java\com\android\server\BatteryService.java

     public void updateLightsLocked() {            final int level = mBatteryProps.batteryLevel;            final int status = mBatteryProps.batteryStatus;            if(mIPOBoot)            {                //Get led status in IPO mode                getIpoLedStatus();            }            if (level < mLowBatteryWarningLevel) {                if (status == BatteryManager.BATTERY_STATUS_CHARGING) {                    updateLedStatus();                    // Solid red when battery is charging                    mBatteryLight.setColor(mBatteryLowARGB);                } else {                    LowLevelFlag = true;                    updateLedStatus();                    // Flash red when battery is low and not charging                    mBatteryLight.setFlashing(mBatteryLowARGB, LightsService.LIGHT_FLASH_TIMED,                            mBatteryLedOn, mBatteryLedOff);                }            } else if (status == BatteryManager.BATTERY_STATUS_CHARGING                    || status == BatteryManager.BATTERY_STATUS_FULL) {                if (status == BatteryManager.BATTERY_STATUS_FULL || level >= 90) {                    updateLedStatus();                    // Solid green when full or charging and nearly full     mBatteryFullARGB                    mBatteryLight.setColor(mBatteryFullARGB);                } else {                    updateLedStatus();                    // Solid orange when charging and halfway full                    mBatteryLight.setColor(mBatteryMediumARGB);                }            } else {                if(ipo_led_on && mIPOBoot){                    if (status == BatteryManager.BATTERY_STATUS_FULL || level >= 90) {                        mBatteryLight.setColor(mBatteryFullARGB);                    }                    else {                        mBatteryLight.setColor(mBatteryMediumARGB);                    }                    mIPOBoot = false;                    ipo_led_on = false;                }                // No lights if not charging and not low                mBatteryLight.turnOff();            }        }

这里是对三色的判断并输出

关机充电情况：

修改两个文件： mediatek\external\ipod目录下面的ipodlights.cpp和ipodmain.h

修改的代码如下：

ipodlights.cpp

#include #include #include "ipodmain.h"#define LED_RED_PATH "/sys/class/leds/red/brightness"#define LED_BLUE_PATH "/sys/class/leds/blue/brightness"  #define BATTERY_CAPACITY_PATH "/sys/class/power_supply/battery/capacity"   #define LED_GREEN_PATH "/sys/class/leds/green/brightness"#define LED_ONOFF_PROP  "sys.ipo.ledon"/*int (*ipod_chglights[])(void) = {lights_init,lights_chgfull,lights_chgon,lights_chgexit,};*/static int led_isOn = CONTROL_UNKNOWN;static int led_green_isOn = CONTROL_UNKNOWN;static int led_red_isOn = CONTROL_UNKNOWN;static int led_blue_isOn = CONTROL_UNKNOWN;   static int nChargingFull = CONTROL_UNKNOWN;static int nChargingRemoved = CONTROL_UNKNOWN;void turn_led_on() {if (led_isOn == CONTROL_ON)return;led_isOn = CONTROL_ON;property_set(LED_ONOFF_PROP, "1");}void turn_led_off() {if (led_isOn == CONTROL_OFF)return;led_isOn = CONTROL_OFF;property_set(LED_ONOFF_PROP, "0");}void start_blue_led(int skew){if (led_blue_isOn == CONTROL_ON)return;led_blue_isOn = CONTROL_ON;if (skew > 255) skew = 255;else if (skew < 0) skew = 0;set_int_value(LED_BLUE_PATH, skew);}void stop_blue_led(){if (led_blue_isOn == CONTROL_OFF)return;led_blue_isOn = CONTROL_OFF;set_int_value(LED_BLUE_PATH, 0);}void start_red_led(int skew){if (led_red_isOn == CONTROL_ON)return;led_red_isOn = CONTROL_ON;if (skew > 255) skew = 255;else if (skew < 0) skew = 0;set_int_value(LED_RED_PATH, skew);}void stop_red_led(){if (led_red_isOn == CONTROL_OFF)return;led_red_isOn = CONTROL_OFF;set_int_value(LED_RED_PATH, 0);}void start_green_led(int skew){if (led_green_isOn == CONTROL_ON)return;led_green_isOn = CONTROL_ON;if (skew > 255) skew = 255;else if (skew < 0) skew = 0;set_int_value(LED_GREEN_PATH, skew);}void stop_green_led(){if (led_green_isOn == CONTROL_OFF)return;led_green_isOn = CONTROL_OFF;set_int_value(LED_GREEN_PATH, 0);}int lights_chgfull(){/* do not block this function like sleep */SXLOGI("lights_chgfull");pthread_mutex_lock(&mutex);nChargingFull = CONTROL_ON;nChargingRemoved = CONTROL_OFF;stop_blue_led(); start_green_led(255);turn_led_on();pthread_mutex_unlock(&mutex);return 0;}int lights_chgon(){SXLOGI("lights_chgon");#if 1pthread_mutex_lock(&mutex);nChargingFull = CONTROL_OFF;nChargingRemoved = CONTROL_OFF;stop_green_led();if(get_int_value(BATTERY_CAPACITY_PATH) < 15){stop_blue_led();start_red_led(255); }else{stop_red_led();start_blue_led(255); }   turn_led_on();  pthread_mutex_unlock(&mutex);#else// an example of light on 2sec, off 3sec.pthread_mutex_lock(&mutex);if (nChargingFull != CONTROL_ON && nChargingRemoved != CONTROL_ON){nChargingFull = CONTROL_OFF;nChargingRemoved = CONTROL_OFF;stop_green_led();start_red_led(255);   turn_led_on();}else{nChargingFull = CONTROL_OFF;nChargingRemoved = CONTROL_OFF;pthread_mutex_unlock(&mutex);return 0;}pthread_mutex_unlock(&mutex);usleep(2000*1000); //sleep 2 secpthread_mutex_lock(&mutex);if (nChargingFull != CONTROL_ON && nChargingRemoved != CONTROL_ON){stop_red_led();turn_led_off();}// reset the state to let next time chgon can work normally.nChargingFull = CONTROL_OFF;nChargingRemoved = CONTROL_OFF;pthread_mutex_unlock(&mutex);#endif return 0;}int lights_chgexit(){/* do not block this function like sleep */SXLOGI("lights_chgexit");pthread_mutex_lock(&mutex);nChargingFull = CONTROL_OFF;nChargingRemoved = CONTROL_ON;stop_green_led();if(get_int_value(BATTERY_CAPACITY_PATH) < 15){stop_red_led();}else{stop_blue_led();}turn_led_off();pthread_mutex_unlock(&mutex);return 0;}

ipodmain.h头文件中需要添加get_int_value()

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