Android 8.1 關(guān)機(jī)充電動(dòng)畫（二）Uboot模式

system：Android 8.1

platform：RK3326/PX30

uboot

kernel

Android 8.1 關(guān)機(jī)充電動(dòng)畫（一）模式選擇

Android 8.1 關(guān)機(jī)充電動(dòng)畫（二）Uboot模式

Android 8.1 關(guān)機(jī)充電動(dòng)畫（三）Android模式

文章目錄

前言

相關(guān)文檔

相關(guān)代碼

總結(jié)

附錄

前言

這部分要涉及到uboot下關(guān)機(jī)充電動(dòng)畫的定制，屬于比較low level的部分，所以代碼修改的部分不大，在uboot中主要是對(duì)多張圖片進(jìn)行輪播，所以這里的主要工作是定位到相應(yīng)的代碼以及如何定制自己的動(dòng)畫。

相關(guān)文檔

RK在uboot的開(kāi)發(fā)方面已經(jīng)給出了文檔，

其中已經(jīng)包括了這部分動(dòng)畫如何打包到rom中，不可避免的是需要重新編譯uboot，但是圖片會(huì)被打包到resource.img中。

相關(guān)代碼

重新回到代碼中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 }, };

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name ：文件名

soc：圖片對(duì)應(yīng)的電量百分比

period：圖片顯示的時(shí)間（單位：ms）

那么，這里問(wèn)題來(lái)了，圖片如何打包到固件里呢？

先找到RK提供的打包用的腳本，u-boot/pack_resource.sh

找到需要打包的圖片，然后需要修改的直接替換掉，圖片采用8bit或24bit bmp格式，圖片路徑：u-boot/tools/images/，如下圖所示：

最終就是如何打包圖片了：

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

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執(zhí)行完以上命令后，終端會(huì)輸出以下信息，說(shuō)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.bmp Pack 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.bmp resource.img is packed ready

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并且會(huì)在當(dāng)前的路徑下重新生成resource.img，將這個(gè)文件重新燒寫到設(shè)備的對(duì)應(yīng)分區(qū)，就可以把充電動(dòng)畫打包到設(shè)備的rom中了。

總結(jié)

簡(jiǎn)單介紹了RK平臺(tái)上進(jìn)行關(guān)機(jī)充電uboot模式下充電動(dòng)畫的定制和打包方法，篇幅較短，也可以參考RK官方的文檔，下一篇介紹一下，關(guān)機(jī)充電Android模式下如何進(jìn)行充電動(dòng)畫的修改。附錄是充電動(dòng)畫顯示的主要代碼。

附錄

下面的代碼是函數(shù)static int charge_animation_show(struct udevice *dev)中的while(1)，這里會(huì)一直循環(huán)顯示充電圖片；

/* 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; else screen_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; } }

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版權(quán)聲明：本文內(nèi)容由網(wǎng)絡(luò)用戶投稿，版權(quán)歸原作者所有，本站不擁有其著作權(quán)，亦不承擔(dān)相應(yīng)法律責(zé)任。如果您發(fā)現(xiàn)本站中有涉嫌抄襲或描述失實(shí)的內(nèi)容，請(qǐng)聯(lián)系我們jiasou666@gmail.com 處理，核實(shí)后本網(wǎng)站將在24小時(shí)內(nèi)刪除侵權(quán)內(nèi)容。