connectSerial cable to the PC and assume it's ready.b) Add power to the board, and then press any key to enter the Uboot command line mode on the serial console (e.g. minicom)c) partition the SD cardYou can partition the SD card by entering the following Uboot command:Fdisk-c 0 320 806 518After repartitioning, you can reformat the FAT partitionFatformat MMC 0:1d
UTF-8 format must be written when writing a string, but I don't know what's going on. --If the kids shoes encounter this problem, I will give you a solution, that is, when writing data, we should not use dataoutputstream for packaging, but use outputstreamwriter, because you can set the encoding in the constructed code!
Outputstreamwriter OSW = new outputstreamwriter (FCM, "UTF-8 ");
String content = encodingutils. getstring (buffer, "UTF-8"); this c
Continue the android learning journey. Today, we use a small example to get the SD card capacity and the phone ROM capacity. The Code is as follows:
Package com. urovo. sdcardspace; import java. io. file; import android. OS. bundle; import android. OS. environment; import android. OS. statFs; import android. app. activity; import android. text. format. formatter
partition table.
Warning: re-reading the Partition Table failed with error 16: the device or resource is busy.
The kernel still uses the old table. The new table will be used
The next reboot or after you run partprobe (8) or kpartx (8)
Warning: If you have created or modified any DOS 6.x
Partitions, please see the fdisk manual page for additional
Information.
Syncing disks.
Save and exit. I thought it would be done at this step. Otherwise there will be the following
4.
SIM card not recognized by mobile phone
1 Please confirm that all SIM cards are not recognized;
2 if not, suggest to the dot to change a sim card try;
3 If all of the SIM card is not recognized, please try to restart or restore the factory settings;
4 if not resolved please go to the nearest Huawei repair network detection.
cell phone does not recognize
SD cards are formatted under Windows and can only be formatted in the FAT file system format, but the FAT file system does not support soft links under Linux. It is also necessary to format it as a file system format under Linux, such as EXT2.
Use built-in Linux with the Tools command mkfs.ext2.
root@target:~# mkfs.ex
Android database SQLite writes SD card, androidsqlite
If the mobile phone does not have a root user, the database files cannot be viewed and debugging is not convenient.
The best way is to write the database into the SD card.
There are two changes:
1. In your helper class, change the database file name DATABASE_NAME f
Make full use of the SD card space in Raspberry Pi
Generally, a 4g sd or TF card is required to create a system image for Raspberry Pi, but do you know if your SD card is 8g or 16g or larger, after various types of Linux are creat
Code used in this blog: http://download.csdn.net/detail/king_bingge/5739167
I haven't written a blog for several days, and I 've been busy with the opening Cup for the past few days. Due to some inharmonious factors, I started preparing for today's opening Cup reply yesterday. Although I don't know what the result is, however, I personally feel that there are still some innovative ideas, that is, the primary judges and teachers are dragging on to our consumption object and no longer think about
If the camera is available, most of the cards are good, and it is possible that
1 Your data cable or port is broken.
Try replacing a data line or read it with a reader.
2 online USB port voltage shortage
Do not use the USB port on the front panel of the computer and try the rear USB port.
3 Computer system failure
Replace a computer to try or reload the operating system.
4 not working correctly
Some brands of camera and computer online operation setup is more troublesome (such
Install the bt3 tutorial on the USB flash drive/SD card (required to crack the wireless route signal password)In fact, there are a lot of online bt3 tutorials. If you fail to install bt3 based on the following tutorial, you can go to Baidu for other tutorials.I wrote a post a few days ago about how to use bt3 to crack the routing signal (Click here to view). In order to attract attention, I placed it in the
I. Burn the bootloader into the SD card1. Format SD card (not mounted): fdisk/dev/sdx-d Delete-N New partition-W save exit 6~default sdx1Two ways to format: Mkfs-t vfat/dev/sdx1Mkfs.vfat/dev/sdx12. Burn the bootloader into the SD
Tags: fdisk sdcard l command SD card img font. com span DTBFirst use the Fdisk–l command to view the SD card's partitionYou can see that the SD card has three partitions, the first partition is the FAT32 system, the main storage of the kernel img files and DTB files, the sec
If nandflash fails to be written, or the wrong Bootstrap is written, the system cannot be started or connected to Sam-BA by USB, but jlink is not available at hand, you can try to use the SD card startup method to restore the data.After downloading the attachment and placing it in the root directory of the SD card in F
("Testfile",
"SD card isn't avaiable/writeable right now");
Return
}
Bundle Bundle = Data.getextras ();
Bitmap Bitmap = (Bitmap) bundle.get ("Data")//Get the data returned by the camera and convert to Bitmap picture format
FileOutputStream B = null;
File File = new file ("/sdcard/myimage/");
File.mkdirs ();//Create Folder
String fileName = "/sdcard/myim
--------------------
The script is first extended and then formatted. One fat extension and one ext3 Partition
-------------------
#! /Bin/sh## Partition and format the SD card script# Usage mksdboot. Sh -- device/dev/SDB
Version = "0.1"
Execute (){$ *>/Dev/nullIf [$? -Ne 0]; thenEchoEcho "error: executing $ *"EchoExit 1Fi}
Version (){EchoEcho "'basename $ 1' ver
The Writes the debug information that you applied to the SD card.
Package com.sdmc.hotel.util;
Import Java.io.BufferedReader;
Import Java.io.File;
Import java.io.FileNotFoundException;
Import Java.io.FileOutputStream;
Import java.io.IOException;
Import Java.io.InputStreamReader;
Import Android.content.Context;
Import android.os.Environment;
Import Android.util.Log; /** * Log Statistics Save
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