advantages mean that arm has a wider application scope than AVR. Therefore, if "We use AVR in Middle School" is correct, we should use arm in university.We can see that at91m55800a Based on the ARM core of ATMEL includes a lot of AVR peripherals, but still lacks Twi/I2C, variable gain ADC, EEPROM and other useful components. However, there is no doubt that arm's external expansion and peripherals are more powerful than AVR.In terms of operating system and software source code resources, arm has
are often updated, the latest U-Boot 1.1.6 supports the following processor architectures: ARM, Intel i386, Intel XScale, MIPS, Blackfin, nmpc, nios2, and PowerPC.
Port U-Boot to the Blackfin DSP series to give full play to the advantages of the U-Boot bootloader. In the subsequent development of embedded systems based on DSP chips, the development difficulty is reduced, shorten the development cycle. This article will introduce the implementation of U-Boot porting on the ADSP-BF533.
1. Port th
completely empty, see theRBL, UBL and host program article for instructions on howGet U-Boot bootloader on your board first. After you did this and have U-Boot running on your board, you can go on with steps below.
Alternatively, you canProgram your NAND flash with JTAG. This is useful for post mortem/rejuvenation of bricked NAND images, especially if you can't change the boot device select pins easily.Prerequisites
For this example you will need the
The jlink plug-in used in this article is here
Http://download.csdn.net/detail/king_bingge/5879179
Two prerequisites:
1. eclipse has been successfully installed. Considering version compatibility issues, it is not applicable to the eclipse that comes with redhat6. The previous blog post has mentioned how to install the tool;
2. The arm-linux-gdb debugging tool has been installed successfully.
Next, set up the debugging environment.
Considering that sometimes bugs in programs are inevitable, We
If you want to buy an Apsara stack Development Board, you can select a Development Board that suits your needs. The following describes the hardware features and functions of the Development Board:
Developed by ARM core: 2440 (ARM9) and 6410 (arm11.
According to the model of Feiling, there are three main series: 1, ok6410, ok2440; 2, te6410, te2440; 3, fl2440.
Development Board Model
Master Chip
Main hardware resources and features
Software resources
OK6410-A
not seem to consider the issue of plug-in layout. For example, the two sides of the clock line and the opposite side should be the ground, high pressureIt is separated from the low-voltage power supply. The signal line must be separated from the power supply, and the power supply must be near the ground or low-speed signal. This board whereIt is a very professional place where standard connectors are used (such as CF card, IDE interface, JTAG interfa
Today, I saw an article on zdnet accusing the iPhone 3gs of having the same data encryption function as a false one.
Article . "I don't think we (developers) have seen such a bad encryption implementation," said one iPhone developer. See: http://news.zdnet.com/2100-9595_22-325008.html
However, are other mobile phones safe? Physical access is also applicable to Windows Mobile devices that use SD card encryption, at least as far as I know, there are still some technical restrictions to preven
Tianyinxing technology company will launch the latest development board of cortex-a8 series in the National Day -- tq210v6 Embedded Development Board. the core board parameters of tq210v6 have been announced ahead of schedule. Now, we have released comprehensive baseboard parameters and ports to lay a solid foundation for Embedded fans and vendor R D.
As we all know, the bottom board of the tianembedded Technology Development Board is well known for its stability and compatibility. The new tq2
optional. The meanings of each letter are as follows:
X -- serial number, for example, "7" in ARM7 and "9" in ARM9 ";
Y-Internal Storage Management/Protection Unit, for example, "2" in arm72 and "4" in arm94 ";
Z -- contains high-speed cache;
T-16-bit thumb Instruction Set;
D -- Support debugging on JTAG;
M -- supports arm commands for long multiplication (64-bit results), including fast multiplier;
I -- with the embedded tracing macro unit (embedded
persistently store information-that is, they do not erase content during reboot.
This software uses the JTAG port on the target (embedded devices are usually called Targets in Embedded Development). It is an interface used to execute commands from external input (usually from host machines. Jflash-Linux is a popular tool for writing flash memory directly. It supports a large number of Flash chips; it is on the host machine (generally i386 machine-In
instancesThis system development board is mainly composed of b0x embedded microprocessor, 2 MB flash (sst39vf160), 8 Mb SDRAM (hy57v641620), 4 LEDs and arm JTAG interfaces. The Functional Diagram 1 of the relevant part of the Development Board with b0x is shown in.3.1 U-boot file downloadThere are two methods to download the U-boot file. The first method is to download the latest file through CVS in Linux. The method is as follows:$ Cvs-dpserveranony
I am ashamed to ask this question because it is the most basic. Unfortunately, this is the most basic thing that is still unclear and vague. If you see a summary, you can take it. It requires practice. I always like reading books, so I have little hands on it. In a word, lazy.
On the arm board, different download interfaces are required for different things, and some may have multiple download methods. If you want to refresh the system, our uboot provides two methods: Network do
1, When I use JTAG to burn bootloader, if I click the BAT file, it will flash because no driver is installed.
2, In bootloader, delay (about 10 ms) is performed before drawing the LCD; otherwise, the entire bootloader cannot be started when it dies. I do not know why
3, The last part of the bootloader partition (partition 0) is used to store the configuration information of the bootloader. Erase is required when you re-burn the bootloader. Otherwise
ABT_STACK_LEGTH * 4 ;Stack spaces for Suspend ModeUndtStackSpace SPACE UND_STACK_LEGTH * 4 ;Stack spaces for Undefined Mode
The above code is used to allocate space for stacks in various modes. The position of mystacksa is specified in the distributed file.
If: Def: en_crp if.> = 0x1fc info 1, "/nthe data at 0x000001fc must be 0x87654321. /nplease delete some source before this line. "endifcrpdata while.
The above lines are actually used by the encryption chip. The lpc21xx and lpc2
development tool. Almost every processor currently supports the JTAG/BDM interface. Most processors support JTAG/BDM debugging tools, such as vision ice, the use of the target board vendor's debug Rom debugging tool is also a way to consider. (2) select an appropriate BSP template. If possible, the selected template should be as close as possible to the hardware platform. Of course, the actual cost and ful
(privileged mode access ). The itm_sendchar () function is defined in core_cm3.h. Therefore, you can call this function to override fputc to print debugging information through printf in the application, you can also view the debugging information through ITM viewer. With this implementation, embedded software developers can output debugging information without configuring serial ports or using terminal debugging software, reducing the workload to a certain extent.
Use SWO to replace the seri
The winarm environment is really good. Now you can compile and debug it. The debugger ocdremote cannot be used to connect to the Board at the beginning. After checking for half a day, it turns out that the JTAG connection line does not meet its requirements. It requires the computer end of the connection line to connect pin8 to pin15. After the connection, you can debug it.
Enter ocdremote.exe-C ARM920T-D wigggler in the command line.
Open GDB and e
by VxWorks tornadoii belongs to thisType.
. The simple and practical printing and display tool [printf] printf or other similar printing and display tools are estimated to be the mostFlexible and simple debugging tools. Printing various variables during code execution allows you to know how code is executed.Status. However, printf imposes a lot of interference on normal code execution (generally, printf takes a long CPU usage), Need to be used with caution, it is best to set the printing switch
management, and IO resource management.Driver, which is generally a part of the kernel. It mainly provides upper-layer applications with a processor peripheral interface controller and externalSets the medium for communication.
Embedded OS: Windows CE, Linux, Plam OS, Symbian OS, VxWorks, UCOS, PSOs,Nucleus, EPOC, etc.
Typical features of rsic: All commands have the same width, and all commands are executed in a single cycle (many implementations do not strictly respect each other,Such as ARM p
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