sd

4096 MiB SD card in Android Emulator… less than 9MB?

匿名 (未验证) 提交于 2019-12-03 08:57:35
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Every time I attempt to create a new AVD with the latest Android SDK (under Eclipse), I can't actually specify SD Card Sizes greater than 1024 MiB. Any attempt to specify higher numbers gets me always the same message: "SD Card Size must be at least 9MB" What gives? Any idea why this could be happening? 回答1: Known issue. Vote for it. 回答2: I have got the same problem too. Answer found here: http://code.google.com/p/android/issues/detail?id=7038 I've also reproduced it with the same setup as Michael. Here is some additional detail on what

(re)mounting the SD card on android emulator

匿名 (未验证) 提交于 2019-12-03 02:14:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: On the emulator, I can unmount the SD card from the Settings. I can then mount it on my OS, then unmount it normally. I haven't been able to figure out how to re-mount it then on the emulator (without rebooting it). hints: the adb command remount is unrelated: it's about /system the emulator command is unrelated: it's only about starting the emulator mounting the SD card in two places of course messing everything up (I tried) more: mount outputs the following: /dev/block//vold/179:0 /sdcard vfat rw,dirsync,nosuid,nodev,noexec,uid=1000,gid

python pandas read_csv quotechar does not work

匿名 (未验证) 提交于 2019-12-03 01:25:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I've read this , this and this posts but despite I don't know why quotechar does not work at pd.read_csv() (Python 3, pandas 0.18.0 and 0.18.1). And how could I read a dataframe like this: "column1","column2", "column3", "column4", "column5", "column6" "AM", 7, "1", "SD", "SD", "CR" "AM", 8, "1,2 ,3", "PR, SD,SD", "PR ; , SD,SD", "PR , ,, SD ,SD" "AM", 1, "2", "SD", "SD", "SD" I want the following result: Out[116]: column1 column2 column3 column4 column5 column6 0 AM 7 1 SD SD CR 1 AM 8 1,2 ,3 PR, SD,SD PR ; , SD,SD PR , ,, SD,SD 2 AM 1 2 SD

How to read the SD Card ID number?

匿名 (未验证) 提交于 2019-12-03 01:23:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: How can I programatically read the SD Card's CID register, which contains a Serial Number and other information? Can I do it through Android Java, or Native code? Thanks in advance, Eric 回答1: Here is sample code for getting SID and CID if (isExteranlStorageAvailable()) { try { File input = new File("/sys/class/mmc_host/mmc1"); String cid_directory = null; int i = 0; File[] sid = input.listFiles(); for (i = 0; i 回答2: I managed to find my SD card CID by plugging my phone to my computer via usb and using the adb tool (Android SDK) $ adb shell #

STM32笔记--SDIO(SD卡读取)

匿名 (未验证) 提交于 2019-12-03 00:30:01
学习这里首先要了解一下SD卡基本资料: SD卡的协议部分太多,也比较复杂,建议资料:《Simplified_Physical_Layer_Spec.pdf》其主要复杂在繁多的命令,一共有64个命令,各个命令代表什么可查资料。 关于这里大部分都是熟悉函数然后直接调用库就行,但还是需要每个函数都去读一下的,后面会有具体函数的使用实例,到时候再补充。 我们代码中一般用到的是ARM官方给的SD卡的库,但是库中存在问题,SD_Error SD_ReadBlock()缺少代码:(有标注,可直接替换) SD_Error SD_ReadBlock(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize) { SD_Error errorstatus = SD_OK; #if defined (SD_POLLING_MODE) uint32_t count = 0, *tempbuff = (uint32_t *)readbuff; #endif TransferError = SD_OK; TransferEnd = 0; //传输结束标置位,在中断服务置1 StopCondition = 0; //怎么用的? SDIO->DCTRL = 0x0; if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) {

获取Android系统所有内置SD卡以及外置SD卡路径

匿名 (未验证) 提交于 2019-12-03 00:22:01
/** * 获取外置SD卡路径 * */ public String[] getExtSDCardPath() { StorageManager storageManager = (StorageManager) getActivity().getSystemService(Context .STORAGE_SERVICE); try { Class<?>[] paramClasses = {}; Method getVolumePathsMethod = StorageManager.class.getMethod("getVolumePaths", paramClasses); getVolumePathsMethod.setAccessible(true); Object[] params = {}; Object invoke = getVolumePathsMethod.invoke(storageManager, params); return (String[])invoke; } catch (NoSuchMethodException e1) { e1.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch

eMMC驱动分析

匿名 (未验证) 提交于 2019-12-02 22:56:40
作者:Aningsk ,本作品采用 知识共享署名-非商业性使用-相同方式共享 3.0 未本地化版本许可协议 基于ATMEL-sama5d3芯片与Linux-3.6.9内核。 SD卡系列简介 这些都是网上找出来的,权当作为开场白了。 MMC卡全称Multi Media Card,由西门子公司和SanDisk公司1997年推出的多媒体记忆卡标准。MMC卡尺寸为32mm x24mm x 1.4mm,它将存贮单元和控制器一同做到了卡上,智能的控制器使得MMC保证兼容性和灵活性。MMC卡具有MMC和SPI两种工作模式,MMC模式是默认工作模式,具有MMC的全部特性。而SPI模式则是MMC协议的一个子集,主要用于低速系统。 SD卡全称Secure Digital Memory Card,由松下、东芝和SanDisk公司于1999年8月共同开发的新一代记忆卡标准,已完全兼容MMC标准。SD卡比MMC卡多了一个进行数据著作权保护的暗号认证功能,读写速度比MMC卡快4倍。尺寸为32mm x 24mm x2.1mm,长宽和MMC卡一样,只是比MMC卡厚了0.7mm,以容纳更大容量的存贮单元。SD卡与MMC卡保持向上兼容,也就是说,MMC卡可以被新的设有SD卡插槽的设备存取,但是SD卡却不可以被设有MMC插槽的设备存取。 SDIO全称Secure Digital Input and Output

MB SD Connect C5 is Verified Working Great

拜拜、爱过 提交于 2019-12-01 23:28:06
The new Mercedes Benz diagnostic tool MB SD Connect C5 is verified working great. Here are customer feedback to Benz C5 SD Connect (not original Xentry Connect C5). 1. “Mercedes Sprinter year 2006 and 2014 works, both the diagnosis All the personal cars also works, no problem” 2. “All the trucks including euro6 also works, no problem. Bus Mercedes Tourismo euro5 year 2010-2012 test works, BUT year 2014 euro6 does NOT work, it says that the license is invalid. Both sd c4 and sd c5, we have tested both on the same cars, to be sure.” 3. SD Connect C5 this one customer has test, works good, in

S3C6410 SD卡启动uboot分析(详细)

依然范特西╮ 提交于 2019-11-29 16:35:08
6410的手册上说,可以从nandflash、onenand、SD卡启动,没有专用的烧录工具的情况下,只有SD卡启动是可以考虑 的。手册上看到,SD卡启动,实际上是先执行片内IROM中的一段程序,该程序从SD卡中读取代码,写到stepping stone 中,stepping stone是位于0x0c000000、size为8K的片内内存,代码写入stepping stone后,跳到 0x0c000000处继续执行程序。那么,要实现从SD卡启动,就必须弄清楚: 1、8K的代码保存在SD卡的什么位置。 2、代码以什么格式存储。 把编译好的代码写入到最后芯片末尾偏移-9216字节处,插入SD卡座,把开关拨到SD0卡启动的位置,上电 这里使用的uboot并非uboot官方发布的uboot代码,而是为三星定制的一个uboot版本 s3c-u-boot-1.1.6,其代码作者就包括了三星的程序员与denx的员工。这个版本支持 SD启动,不过默认是nand启动,使它支持uboot需要做以下事情: 1、 虽然支持uboot启动,但是uboot代码里不叫SD启动方式,而是叫movinand启动 方式,在incluede/configs/smdk6410.h中就有这个选项,所以在这个文件里关闭nand 启动,打开movinand启动就可以了: //#define CONFIG_BOOT_NOR //

Win10 环境下 SD 卡烧录 U-boot 时出现 can not write image

拟墨画扇 提交于 2019-11-29 14:46:21
尝试了几种解决办法,换电脑,换读卡器都不行,最后放弃使用这个软件进行烧录。改用在 Linux 下使用命令行进行烧录。 解决方法: 1:我是在电脑中装的虚拟机,所以不能使用笔记本电脑自带的 SD 卡读卡器,因为虚拟机不识别这种借口,USB 口比较好识别,把 SD 卡插入读卡器。 2:打开命令行,切换到管理员模式 3:将 uboot_sd_fusing 文件夹赋值到 Windows 和 Linux 虚拟机的共用文件夹下,并进入此文件夹目录 文件夹下载链接: 链接: https://pan.baidu.com/s/1fEvTcv1rI-iF7zyhDb2JZg 提取码:m96t 4:执行 ./nand_fusing.sh /dev/sdb 命令进行烧录 来源: 51CTO 作者: YPB39155 链接: https://blog.51cto.com/ypb39155/2323495