PIN will respond accordingly. Q 1: Q 2: Does the chip selection pin need to be set manually? Answer 2: no need. When the CPU accesses an address, the CPU sends an address signal to the memory controller, and the memory controller makes the corresponding So let's say why our memory address is 30000000, because we have this time the memory controller to select the address, corresponding to the corresponding chip selection signal, select the memory chip. The address range of a single chip pin corr
Some time ago, bare metal was used on the Keil platform. Keil was not born to support both arm11 and arm11 products. It was not very easy to use, but it was still switched back to ads. The Platform should not be an obstacle that binds us. It should be our tool. It should be used when we pick it up!
This blog does not teach you to start learning ads from scratch, but is just a record of my experiment, whic
Mini2440 bare metal trial-IIC controls EEPROM data transmission, mini2440iicContent:
Write 0x00-0xff to the internal address of EEPROM (AT24C02), and then read the data.Iic bus introduction:
The IIC (Inter-IntegratedCircuit, I2C) bus is a two-line serial bus developed by PHILIPS to connect the microprocessor and its peripheral devices. On the iic BUS, only two lines are required: the serial data line SDA an
1: Install TFTP:#apt-get Update#apt-get Install TFTP-HPA tftpd-hpa xinetd2:#cd/srv#mkdir TFTP#chmod 777 TFTP3: Copy a led.bin file into TFTPHttp://pan.baidu.com/s/1kTS7MGv4: Restart the service#/etc/init.d/xinetd Restart#/ETC/INIT.D/TFTPD-HPA Restart5: After starting the GEC210 Development Board, enter the Uboot command to execute:Ubuntu ip:192.168.205.250Development Board ip:192.168.205.233#pri............................#setenv ServerIP 192.168.205.250#setenv ipaddr 192.168.205.233#setenv Gate
};//version is double-byte, here is the high-byte, low -byteRET = gtp_i2c_read (client, buf,sizeof(BUF)); = U8 buf[8] = {Gtp_reg_version >>8, Gtp_reg_version 0xFF}; //The first 2 bytes have been stored in gtp_reg_version, starting from buf[2], where the data structure remains consistent for subsequent code BUF[8]RET =i2c_read0 (0x5c, Gtp_reg_version, buf[2],6) i2c_read0 (0x5c, gtp_reg_version)//U16 with Double byte.3, overwrite interrupt function processing,look at the driver code, delete all th
myvsprintf (STRING,FMT,AP) Transforms the FMT string into variable parameters, assigns the transformation result to string, and sends the string to the serial port through the uart_sendstring () function. The concrete implementation can look at my source code. In my resources, http://download.csdn.net/detail/yaozhenguo2006/3774535.
Standard C library problem even if temporarily solved, but still give me a wake up, ARM-LINUX-GCC on the development of bare
I do not know if you can remember a few days ago, there is a slightly scattered over the VMM to achieve the highest level of bare metal deployment of the post, in the video recording finished upload to Youku before, think about, there seems to be another thing did not do. That is, the server that needs to be managed has not enabled Remote Desktop Connection, and it is possible to implement remote management
This section describes how to burn bare-metal programs using Oflash and Openjtag. Oflash also supports parallel-burning writing, similar to Openjtag. If you want to use Jlink burn write, need to install Segger J-flash tools, here we do not introduce more.First, you need to install Oflash,oflash from the development board manufacturer or download from the Internet. Copy the Oflash to the "/usr/bin" directory
EmbeddedLinux Bare Metal Development (16)--Shell implementation First,Shell Introduction The shell is the interface between the user and the operating system and provides the user with an interface to use the operating system.1. Graphical interface Shell Graphical interface Shell (graphical User Interface shell is GUI shell)most widely used graphical interface Shell is Windows Explorer (Microsoft's Windows
EmbeddedLinux Bare Metal Development (eight)--s5pv210 Interrupt processing process an interrupt is a process that the CPU inserts into another program during the execution of the current program due to hardware or software reasons. The interruption process due to hardware causes is unpredictable, that is, random, and soft interrupts are pre-arranged. The signal source that caused the interruption is called
The paper is recorded in the Linux environment with the cross-tool chain to develop arm bare metal programs encountered some problems and solutions, mainly to solve the problem of the process and a number of small experience, small skills recorded. Now, some of the things that feel a bit of value are moved to the blog for readers ' reference.
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22:25Compiling a
Raspberry PI Series--bare metal illuminated LED lightsBackgroundRecently just bought Raspberry PI B +, configured to run the official Raspbian system, tossing a week Linux system, feel no meaning, so try to understand the bottom of the start process, through a few days of research, It is found that the boot of the lowest part is performed by the official Bootcore.bin and start.elf files (which should be the
EmbeddedLinux Bare Metal Development (13)--i²c communication a,IIC Protocol 1. Introduction ofIIC bus i2c (Inter - integrated circuit) bus is a philips The company developed a two-wire serial bus for connecting microcontrollers and peripherals. i2c Bus is a serial data bus, only two signal lines, one is two-way cable sda and the other one is the clock line scl i2c A data byte transmitted o
, DNW the title bar will display Usb:ok, window printing informationD: From the above, we can see why learn a button or USB burn Linux?A: Switching from a wince system to a Linux systemB: Replace uboot, kernel image zimage, one or more of the file system YAFFS2C: There is a bad zone, the Development Board will not startThe difference between E:USB and one-click Burning LinuxA: The same point:
The same purpose is to burn Linux into NAND.
Start with SD card
All through the serial
localhost:2331 3 # Set JTAG speed to kHz 4 monitor endian little 5 Monitor Speed 6 # Reset the target 7 monitor reset 8 monitor Sleep 9 # Setup GDB for faster downloads #set Remot E memory-write-packet-size 1024x768 monitor speed auto break main loadAfter the above settings, you can start debuggingFive, start debuggingNote: When debugging with Eclipse, you must ensure that Jlinkgdbserver is running at the same timeOtherwise, an error similar to the following will appear:Make sure the jlinkgdbse
Makefile slightly moved, that is, the original beginning of the "Led_on.bin" to "all", eclipse default compilation target is "All", it can be successfully compiled, after compiling will produce led_on.bin,led_on_elf. The former is downloaded to Nandflash, which is used for debugging.can be compiled after the start of configuration debugging, and debugging U-boot The only difference is the name of the specified application, as shown in. The other Debugger commands are the same as those configured
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First, the hardware pin description
The tiny6410 Development Board has 4 user programmable LEDs located on the core board directly connected to the CPU's gpio.
Led detailed resources occupy the following table:
LED4 LED3 LED2 LED1 GPIO GPK7 GPK6 GPK5 GPK4
Second, bare-metal p
s3c2416 Bare Metal Development Series 13
Capacitive screen Drive implementation
Chess Boy 1048272975
In the human-computer interaction system, the keyboard, touch screen and other input devices is an indispensable part. For mobile phones, tablets, these consumer electronics, touch screen with its very good user experience has been widely used. The author here is a simple introduction to the application of
In the article "Backing up the Active Directory with Windows Server Backup" I explained how to take advantage of Windows Server Backup to back up domain controls, and in this blog post, let's take a look at how you can restore the Windows Server Backup backup of the domain control information for bare metal restore operations;
The steps can be referred to as follows:
1 Boot load Windows Server 2008 R2 SP1
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