mtk8735b 低电（电压小于3.4V）充不亮充电图标

2019-04-13 14:03发布

站内文章 / 模拟电子
12823 0 1783

mtk 低电（电压小于3.4V）充不亮充电图标

查看log知道亮低电充电图标是在lk层
MTK启动流程`
bootroom(加载pl 可USB下载) ------->pl(加载lk)----------->lk(加载内核)-------->kernel（驱动（GPL认证），内核态init进程启动）--------->Android系统（Android Framework层初始化，用户态init进程启动） mt8163_8.1_9_5alpsvendormediatekproprietaryootableootloaderlkplatformmt8163 platform.c有下面的代码控制低电会亮低电图标 void platform_init(void) { .................... #ifdef MTK_KERNEL_POWER_OFF_CHARGING if (kernel_charging_boot() == 1) { #ifdef MTK_BATLOWV_NO_PANEL_ON_EARLY//由于此项目是充电dc充电的不满足下面的判断条件所以不会亮低电图标 CHARGER_TYPE CHR_Type_num = CHARGER_UNKNOWN; CHR_Type_num = hw_charging_get_charger_type(); if ((g_boot_mode != LOW_POWER_OFF_CHARGING_BOOT) || ((CHR_Type_num != STANDARD_HOST) && (CHR_Type_num != NONSTANDARD_CHARGER))) { #endif mt_disp_power(TRUE); mt_disp_show_low_battery();//调用该函数可以亮低电图标 mt65xx_leds_brightness_set(6, 110); #ifdef MTK_BATLOWV_NO_PANEL_ON_EARLY } #endif } else if (g_boot_mode != KERNEL_POWER_OFF_CHARGING_BOOT && g_boot_mode != LOW_POWER_OFF_CHARGING_BOOT) { if (g_boot_mode != ALARM_BOOT && (g_boot_mode != FASTBOOT)) { mt_disp_show_boot_logo(); } } ................... } //改法 mt8163_8.1_9_5alpsdevicemediateksample b8163p3_bspelinkPCBAH863 ProjectConfig.mk中该宏关闭 .................... MTK_BATLOWV_NO_PANEL_ON_EARLY = no ................... mt8163_8.1_9_5alpsdevicemediateksample b8163p3_bspelinkPCBAH863 tb8163p3_bsp_lk.mk 控制lk层的该宏关闭 ................. #DEFINES += MTK_BATLOWV_NO_PANEL_ON_EARLY .................

热门文章