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 1
pthread_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 sec
pthread_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()