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

 <!-- Display low battery warning when battery level dips to this value --><integer name="config_lowBatteryWarningLevel">15</integer>    控制低电量的最低值<!-- Close low battery warning when battery level reaches this value --><integer name="config_lowBatteryCloseWarningLevel">20</integer><!-- Default color for notification LED. --><color name="config_defaultNotificationColor">#ffffffff</color><!-- Default LED on time for notification LED in milliseconds. --><integer name="config_defaultNotificationLedOn">500</integer><!-- Default LED off time for notification LED in milliseconds. --><integer name="config_defaultNotificationLedOff">2000</integer><!-- Default value for led color when battery is low on charge --><integer name="config_notificationsBatteryLowARGB">0xFFFF0000</integer>    低电量红色<!-- Default value for led color when battery is medium charged --><integer name="config_notificationsBatteryMediumARGB">0xFF0000FF</integer>     15到90 蓝色<!-- Default value for led color when battery is fully charged --><integer name="config_notificationsBatteryFullARGB">0xFF00FF00</integer>    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 modegetIpoLedStatus();}if (level < mLowBatteryWarningLevel) {if (status == BatteryManager.BATTERY_STATUS_CHARGING) {updateLedStatus();// Solid red when battery is chargingmBatteryLight.setColor(mBatteryLowARGB);} else {LowLevelFlag = true;updateLedStatus();// Flash red when battery is low and not chargingmBatteryLight.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     mBatteryFullARGBmBatteryLight.setColor(mBatteryFullARGB);} else {updateLedStatus();// Solid orange when charging and halfway fullmBatteryLight.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 lowmBatteryLight.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 <stdio.h>
#include <utils/Log.h>
#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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