First, about Jlink hanging off how to deal with, mainly to perform firmware recovery, the steps are as follows(Important: To recover under the XP system, after plugging in Jlink, the driver to locate their own installation: C:\Program Files\atmel corporation\at91-isp v1.13\sam-ba 2.9\drv, first installed the following software only):Follow the detailed burn-down steps in "J-link V8 firmware Burn instructions" below:J-link is used in the process, if th
There is a definition of machine in the Board initialization file of LinuxArch/arm/mach-at91/board-sam9261ek.cMachine_start (At91sam9g10ek, "Atmel At91sam9g10-ek")/* Maintainer:atmel */. Phys_io = At91_base_sys,. Io_pg_offst = (At91_va_base_sys >>) 0XFFFC,. Boot_params = At91_sdram_base + 0x100,. Timer = at91sam926x_timer,. Map_io = Ek_map_io,. INIT_IRQ = Ek_init_irq,. Init_machine = Ek_board_init,Machine_endWhere Machine_start and machine_end are de
/eeprom_93cx6.koO parameter designation, will change the structure of the entire compiled file, for example, oh we have multiple platforms to compile, you need to clone a copy of the kernel code for each platform, only need to set a different output path:Make O=atmel, make O=asus (O parameter overrides kbuild_output variable), the corresponding file will also be generated under the target path, for example uimage in
is meant to be, only from the intuitive point of view, one is a double row of the straight, one is surrounded by a solder pin chip, which, when the DIP to identify the time to pay attention to, It is soldered through the entire motherboard or board card. 5. According to the ROM chip manufacturer classification, Winbond (Taiwan State), INTEL, ATMEL, SST, mxic and other manufacturers 6. According to the BIOS usage classification, motherboard BIOS, vi
identification, settings, and read and write commands, these processes are necessary, but specifically for different cards will have some unique operation.Bus: Related to the operation of buses, connecting the drive and equipment bridge;Core: Provide storage card related operations, core.c by SD.C, mmc.c two files supported, core.c the MMC card, SD card of the generality of the abstract, their differences by the SD.C and SD_OPS.C, MMC.C and mmc_ops.c to complete.Host: The main is to manipulate
asynchronous serial interface capable of supporting receive buffer full and send cache null interrupts.
A clock that generates a timer for the t3.5 Word descriptor required to transmit the RTU.
For the software section, just a simple event queue is required. The Str71x/freertos transplant uses the FreeRTOS queue as the event queue to reduce the time required for Modbus tasks. Smaller microcontrollers are often not allowed to use the operating system, in which case a global variable can
is it possible to start Linux in 1 seconds? We know that Linux system boot is not fast, at least 11 seconds, but now there is a trick, can 1 seconds to open the Linux system, what is the technology so cattle? See below for more informationStarting the system as fast as possible is very important for automation equipment. The system can be started in a time that the user cannot perceive, which means that the power can be completely cut off when no work is needed, instead of suspending into hibern
, the machine has been compiled and installed to complete the LIBUSB0X02 running the sample programcd examples/makeThen we see examples/ a few more executable programs in the directory:
Listdevs: List all current USB devices
hotplugtest: USB hot-swap test
dpfp_threaded: Operation u.are.u 4000b fingerprint capture device Demo
DPFP: Initialize u.are.u 4000b fingerprint capture device
Sam3u_benchmark: Demo to test the performance of the
, Atmel Company's AVR series and arm Company's ARM9, ARM10 and ARM11. The Harvard structure is an independent architecture of program and data space designed to mitigate the bottleneck of the program running. For example, in the most common convolution operations, one instruction takes two operands at the same time, in the pipeline processing, also has one to refer to the operation, if the program and the data through a bus accesses, takes the point
is indicated by the two LEDs connected to the CPU. If the CPU finds an Abnormal road, it will drive the alarm indicator to indicate that the power supply is abnormal, and drive the relay to connect to another power supply. If the two channels are abnormal at the same time, because the alarm output of the relay is normally closed, the CPU has no output signal, and the contacts of the relay are closed, the alarm information can be provided to the remote end.
MAX788 is a switching voltage regulato
STC12C5A60S2 51 microcontroller minimum system,STC12C5A60S2
1. Connect the physical circuit according to the chip documents. Minimum system:Circuit Diagram
2. Install the driver according to the usb downloader1. first, plug the usb downloader into the computer, View computer device management, view the occupied com port if the device is not identified, you need to install the usb driver 2. install the keil compiler 1>. create a new project, create a new source code file, and add the file to the
The serial 51 in ATMEL has the same functions as 89C51. Command compatibility. The hex program does not require any conversion.Directly. Listen 51 only adds a watchdog function than 89C51. For other functions of iis51, refer to 89C51..The use of the watchdog is as follows:In program initialization, first write 01eh to the watchdog register (wdtrst address is 0a6h) and then 0e1h. ExcitingActive guard.Org 1, 0000Ljmp beginBegin:MoV 0a6h, # 01eh; send 1E
/Install a shared libgcc?
------- Ccache options
[] Enable ccache support?
-------- GDB options
[]BuildGdb debugger for the target
[]BuildGDB server for the target
[]BuildGDB for the host
--------- This option is not configured for elf2flt
--------- This option is not configured in common toolchain options
(-OS-pipe) Target Optimizations
[*] Include target utils in cross toolchain
Package selection for the target -- à busybox additional compilation, not configured here
Target options-à [*] ext2R
displays unknown devices ):Http://think.lenovo.com.cn/support/driver/detail.aspx? Docid = dr1197949959109 doctypeid = doc_type_driverDefault release path C:/Drivers/win/TPM/installe. EXE, right-click an unknown device in the Device Manager, select Update driver, and manually specify to C:/Drivers/win/TPM/directory for installation. After the installation, the system device may have two Atmel TPM, one of which has an exclamation point. Right-click to
assigned 0; if the environment variable verify is empty (that is, no environment variable verify is defined) or if the environment variable verify is not equal to 'n', the local variable verify is assigned a value of 1.
S = getenv ("verify ");Verify = (S (* s = 'n '))? 0: 1;
If the number of parameters is less than 2 (only bootm is input), use the default loading address pai_load_addr; otherwise, use the second parameter as the loading address.If (argc ADDR = load_addr;} Else {ADDR = simple_st
Atmega169 tqfp package mainly has the following models: ATmega169V-8AU, ATmega169V-8AI, ATmega169-16AU, ATmega169-16AI.
Model ID description:(1) The difference between "V" and "V": the voltage range supported by "V" is 1.8-5.5 V. If "v" is not provided, the supported voltage range is 2.7-5.5 V.(2) The numeric part of the suffix represents the maximum system clock that MCU can support, such as ATmega169V-8AU and ATmega169V-8AI refers to the system clock that can support up to 8 MHz. While ATmega
content of the LED display can be easily updated in real time in any place with mobile network coverage by means of short messages, effectively solving the trouble of updating the LED display data and the difficulty of monitoring, reduces the workload of management departments. With the development of mobile communication technology and the further promotion of the application scope of LED display screen, this kind of LED display screen based on mobile data has great application value.1. system
Some time ago, I also compiled an rt3070 driver. The Development Board is mini2440 and kernel 2.6.32. Many problems have been encountered, but all of them have been solved. For details, please refer to the blog. In the past few days, because we have to transplant the Driver Board sam9x5 and kernel 2.3.39 to another board, we thought it would be very easy because of our previous experience. I did not expect any problems, I have never met one before. However, after the effort, we can still solve t
disconnection, in include/Linux/interrupt. h
Init/Main. cAsmlinkage void _ init start_kernel (void){......584 setup_arch ( command_line); // {750 init_arch_irq = mdesc-> init_irq;} assigns a value to the init_arch_irq function pointer called by line 1......./* Relocate the interrupt vector table and modify the access permission of the page occupied by the interrupt vector table */606 fig ();..../* This function first sets the status of all elements in the irq_desc array to irq_norequest | irq_n
search path by GCC. However, for ARM crossoverCompile the toolset, which may not have been installed before (unless it has been installed before. Therefore, we need to extract the core header file of arm. Here we use the core for at91rm9200File linux-2.4.27-vrs1.tar.bz2(If it is a general-purpose Core, you need a patch file for ARM)
Tar-jxvf linux-2.4.27-vrs1.tar.bz2-C ~Cd ~Ln-s linux-2.4.27-vrs1-ATMEL armlinux
Now, we have created :~ /Armlinux conne
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.