Android(安卓)8.1 关机充电动画（二）Uboot模式

system：Android 8.1
platform：RK3326/PX30
uboot
kernel

Android 8.1 关机充电动画（一）模式选择
Android 8.1 关机充电动画（二）Uboot模式
Android 8.1 关机充电动画（三）Android模式

文章目录

前言
相关文档
相关代码
总结
附录

前言

这部分要涉及到uboot下关机充电动画的定制，属于比较low level的部分，所以代码修改的部分不大，在uboot中主要是对多张图片进行轮播，所以这里的主要工作是定位到相应的代码以及如何定制自己的动画。

相关代码

重新回到代码中u-boot/drivers/power/charge_animation.c

struct charge_image {const char *name;int soc;int period;/* ms */};/* * IF you want to use your own charge images, please: * * 1. Update the following 'image[]' to point to your own images; * 2. You must set the failed image as last one and soc = -1 !!! */static const struct charge_image image[] = {{ .name = "battery_0.bmp", .soc = 5, .period = 600 },{ .name = "battery_1.bmp", .soc = 20, .period = 600 },{ .name = "battery_2.bmp", .soc = 40, .period = 600 },{ .name = "battery_3.bmp", .soc = 60, .period = 600 },{ .name = "battery_4.bmp", .soc = 80, .period = 600 },{ .name = "battery_5.bmp", .soc = 100, .period = 600 },{ .name = "battery_fail.bmp", .soc = -1, .period = 1000 },};

name ：文件名
soc：图片对应的电量百分比
period：图片显示的时间（单位：ms）

那么，这里问题来了，图片如何打包到固件里呢？

先找到RK提供的打包用的脚本，u-boot/pack_resource.sh
找到需要打包的图片，然后需要修改的直接替换掉，图片采用8bit或24bit bmp格式，图片路径：u-boot/tools/images/，如下图所示：
最终就是如何打包图片了：

cd u-boot && ./pack_resource.sh ../kernel/resource.img

执行完以上命令后，终端会输出以下信息，说明打包成功；

Pack ./tools/images/ & resource.img to resource.img ...Unpacking old image(resource.img):rk-kernel.dtb battery_1.bmp battery_2.bmp battery_3.bmp battery_4.bmp battery_5.bmp battery_fail.bmp logo.bmp logo_kernel.bmp battery_0.bmpPack to resource.img successed!Packed resources:rk-kernel.dtb battery_1.bmp battery_2.bmp battery_3.bmp battery_4.bmp battery_5.bmp battery_fail.bmp logo.bmp logo_kernel.bmp battery_0.bmpresource.img is packed ready

并且会在当前的路径下重新生成resource.img，将这个文件重新烧写到设备的对应分区，就可以把充电动画打包到设备的rom中了。

总结

简单介绍了RK平台上进行关机充电uboot模式下充电动画的定制和打包方法，篇幅较短，也可以参考RK官方的文档，下一篇介绍一下，关机充电Android模式下如何进行充电动画的修改。附录是充电动画显示的主要代码。

附录

下面的代码是函数static int charge_animation_show(struct udevice *dev)中的while(1)，这里会一直循环显示充电图片；

/* Charging ! */while (1) {/* * At the most time, fuel gauge is usually a i2c device, we * should avoid read/write all the time. We had better set * poll seconds to update fuel gauge info. */if (!first_poll_fg && get_timer(delta) < FUEL_GAUGE_POLL_MS)goto show_images;delta = get_timer(0);debug("step1 (%d)... \n", screen_on);/* * Most fuel gauge is I2C interface, it shouldn't be interrupted * during tansfer. The power key event depends on interrupt, so * so we should disable local irq when update fuel gauge. */local_irq_disable();/* Step1: Is charging now ? */charging = fuel_gauge_get_chrg_online(fg);if (charging <= 0) {printf("Not charging, online=%d. Shutdown...\n",       charging);/* wait uart flush before shutdown */mdelay(5);/* PMIC shutdown */pmic_shutdown(pmic);printf("Cpu should never reach here, shutdown failed !\n");continue;}debug("step2 (%d)... show_idx=%d\n", screen_on, show_idx);/* Step2: get soc and voltage */soc = fuel_gauge_get_soc(fg);if (soc < 0 || soc > 100) {printf("get soc failed: %d\n", soc);continue;}voltage = fuel_gauge_get_voltage(fg);if (voltage < 0) {printf("get voltage failed: %d\n", voltage);continue;}current = fuel_gauge_get_current(fg);if (current == -ENOSYS) {printf("get current failed: %d\n", current);continue;}first_poll_fg = 0;local_irq_enable();show_images:/* * Just for debug, otherwise there will be nothing output which * is not good to know what happen. */if (!debug_start)debug_start = get_timer(0);if (get_timer(debug_start) > 20000) {debug_start = get_timer(0);printf("[%8ld]: soc=%d%%, vol=%dmv, c=%dma, online=%d, screen_on=%d\n",       get_timer(0)/1000, soc, voltage,       current, charging, screen_on);}/* * If ever lowpower screen off, force screen_on=false, which * means key event can't modify screen_on, only voltage higher * then threshold can update screen_on=true; */if (ever_lowpower_screen_off)screen_on = false;/* * Auto turn on screen when voltage higher than Vol screen on. * 'ever_lowpower_screen_off' means enter while loop with * screen off. */if ((ever_lowpower_screen_off) &&    (voltage > pdata->screen_on_voltage)) {ever_lowpower_screen_off = false;screen_on = true;show_idx = IMAGE_SHOW_RESET;}/* * IMAGE_SHOW_RESET means show_idx show be update by start_idx. * When short key pressed event trigged, we will set show_idx * as IMAGE_SHOW_RESET which updates images index from start_idx * that calculate by current soc. */if (show_idx == IMAGE_SHOW_RESET) {for (i = 0; i < image_num - 2; i++) {/* Find out which image we start to show */if ((soc >= image[i].soc) &&    (soc < image[i + 1].soc)) {start_idx = i;break;}if (soc >= 100) {start_idx = image_num - 2;break;}}debug("%s: show_idx=%d, screen_on=%d\n",      __func__, show_idx, screen_on);/* Mark start index and start time */show_idx = start_idx;show_start = get_timer(0);}debug("step3 (%d)... show_idx=%d\n", screen_on, show_idx);/* Step3: show images */if (screen_on) {/* Don't call 'charge_show_bmp' unless image changed */if (old_show_idx != show_idx) {old_show_idx = show_idx;debug("SHOW: %s\n", image[show_idx].name);charge_show_bmp(image[show_idx].name);}/* Re calculate timeout to off screen */if (priv->auto_screen_off_timeout == 0)priv->auto_screen_off_timeout = get_timer(0);} else {priv->auto_screen_off_timeout = 0;system_suspend_enter(pdata);}mdelay(5);/* Every image shows period */if (get_timer(show_start) > image[show_idx].period) {show_start = get_timer(0);/* Update to next image */show_idx++;if (show_idx > (image_num - 2))show_idx = IMAGE_SHOW_RESET;}debug("step4 (%d)... \n", screen_on);/* * Step4: check key event. * * Short key event: turn on/off screen; * Long key event: show logo and boot system or still charging. */key_state = check_key_press(dev);if (key_state == KEY_PRESS_DOWN) {old_show_idx = IMAGE_SHOW_RESET;/* NULL means show nothing, ie. turn off screen */if (screen_on)charge_show_bmp(NULL);/* * Clear current image index, and show image * from start_idx */show_idx = IMAGE_SHOW_RESET;/* * We turn off screen by charge_show_bmp(NULL), so we * should tell while loop to stop show images any more. * * If screen_on=false, means this short key pressed * event turn on the screen and we need show images. * * If screen_on=true, means this short key pressed * event turn off the screen and we never show images. */if (screen_on)screen_on = false;elsescreen_on = true;} else if (key_state == KEY_PRESS_LONG_DOWN) {/* Only long pressed while screen off needs screen_on true */if (!screen_on)screen_on = true;/* Is able to boot now ? */if (soc < pdata->exit_charge_level) {printf("soc=%d%%, threshold soc=%d%%\n",       soc, pdata->exit_charge_level);printf("Low power, unable to boot, charging...\n");show_idx = image_num - 1;continue;}if (voltage < pdata->exit_charge_voltage) {printf("voltage=%dmv, threshold voltage=%dmv\n",       voltage, pdata->exit_charge_voltage);printf("Low power, unable to boot, charging...\n");show_idx = image_num - 1;continue;}/* Success exit charging */printf("Exit charge animation...\n");charge_show_logo();break;} else {/* Do nothing */}debug("step5 (%d)... \n", screen_on);/* Step5: Exit by ctrl+c */if (ctrlc()) {if (voltage >= pdata->screen_on_voltage)charge_show_logo();printf("Exit charge, due to ctrl+c\n");break;}}

文章目录

前言

相关文档

相关代码

总结

附录

更多相关文章

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