WAP服务器，支持UP新势力套餐实时同步接口
上传时间： 2013-12-01
上传用户：refent
AT91RM9200的USB host和USB device的代码ADS1.2. USB-Device测试程序: 因为程序运行在SDRAM中，所以要先初始化SDRAM（可用basic boot程序初始，之后不能复位或断电），再运行此程序，程序运行后连接USB端口，计算机会提示检测到新硬件，安装硬件驱动程序atmusb6119.inf 后计算机会把USB端口虚拟为一个串行的端口使用
标签： USB-Device USB device SDRAM
上传时间： 2013-12-15
上传用户：cazjing
这是上月，我给公司做的一个4k的bootloader, 属于公司的不公开代码哦.做嵌入式的都知道，bootloader中的u-boot编译后有一百多K，vivi编译后有几十K，但某些场合，需要一个小于4K的bootloader,以达到占用空间小，且启动迅速目的，它的难点在与，体积不能大于4K，且要完成bootloader的基本功能.....剩下我就不多说了.用法：我在压缩包里写了一个readme,请看一下.
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上传时间： 2015-11-21
上传用户：541657925
The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowledge of the elements of arithmetic as they exist on a computer. That conclusion and this book are the result of a long and frustrating search for information on writing arithmetic routines for real-time embedded systems. With instruction cycle times coming down and clock rates going up, it would seem that speed is not a problem in writing fast routines. In addition, math coprocessors are becoming more popular and less expensive than ever before and are readily available. These factors make arithmetic easier and faster to use and implement. However, for many of you the systems that you are working on do not include the latest chips or the faster processors. Some of the most widely used microcontrollers used today are not Digital Signal Processors (DSP), but simple eight-bit controllers such as the Intel 8051 or 8048 microprocessors.
标签： arithmetic high-speed ultimately efficient
上传时间： 2014-11-30
上传用户：lizhen9880
This leon3 design is tailored to the Altera NiosII Startix2 Development board, with 16-bit DDR SDRAM and 2 Mbyte of SSRAM. As of this time, the DDR interface only works up to 120 MHz. At 130, DDR data can be read but not written. NOTE: the test bench cannot be simulated with DDR enabled because the Altera pads do not have the correct delay models. * How to program the flash prom with a FPGA programming file 1. Create a hex file of the programming file with Quartus. 2. Convert it to srecord and adjust the load address: objcopy --adjust-vma=0x800000 output_file.hexout -O srec fpga.srec 3. Program the flash memory using grmon: flash erase 0x800000 0xb00000 flash load fpga.srec
标签： Development Startix2 tailored Altera
上传时间： 2014-01-19
上传用户：chongcongying
Spartan 3 Digilent Demo:This demo drives the perphrials on the Spartan 3 board. This drives a simple pattern to the VGA port, connects the switches to the LEDs, buttons to each anode of the seven segment decoder. The seven segment decoder has a simple counter running on it, and when SW0 is in the up position the seven segment decoder will display scan codes from the PS2 port. This demo how ever does not drive the RS-232 port or the memory. This is a simple design done entirely VHDL not microblaze.
标签： Spartan drives This perphrials
上传时间： 2014-05-29
上传用户：SimonQQ
This a simple bootloader for AT91SAM7{S,X}{64,128,256} processors. It permits you to download new code to the device over USB. This bootrom is installed at address 0x00000000 in the ARM, which means that it is the first piece of code to execute after reset. At startup, it waits for a few seconds to see if the downloader is trying to connect. If not, then the bootloader gives up control and jumps to your program. If the downloader is trying to connect, then the bootloader receives the new program over USB and writes it into flash.
标签： bootloader processors download permits
上传时间： 2015-11-30
上传用户：shus521
IO 驱动 LCD , *** *** *** *** *** *** *** *** FILE NAME: IO_LCD MCU: HT46R22 MASK OPTION: WAKE-UP: PA6,PA7 PULL-HIGH: PA,PB,PC IIC: DISABLE PFD: DISABLE PWM: DISABLE WDT: ENABLE CLRWDT: ONE WDT CLOCK SOURCE: T1 WDT TIME OUT SELECT: WDT CLOCK SOURCE/32768 LVR: DISABLE OSC: CRYSTAL SYSVOLT: 3.0V SYSFRAG: 4000KHZ AUTHOR: RADOME HISTORY: 2005.08.
上传时间： 2014-12-21
上传用户：watch100
C6713对Flash 的烧写例程，对于做BOOT的人应该很有参考价值
上传时间： 2014-01-21
上传用户：baiom
后PC时代是嵌入式和网络化的时代，包括掌上电脑在内的PDA产品是后PC时代最重要的产品之一。在PDA市场激烈竞争的今天，Palm这个PDA界的龙头老大，将被国内越来越多的人所接受，有关Palm OS 的研究、开发和应用工作也将随之推广。Palm OS programming from the ground up作为一本Palm开发的入门书籍较为全面的向读者介绍了使用Code Warrior开发工具开发一个完整Palm OS应用程序的全过程。 本书面向各个层次的C程序员读者和PDA爱好者。对于初学者来说，这是一本很好的入门教程，对于有经验的程序员来说，这是专业的参考书，对于PDA爱好者来说，这又是一本方便的手册。通过本书的学习，不仅可以快速学会开发基本的Palm OS应用程序，还可以学到调试程序、使用数据库，优化用户界面等高级PDA开发技术。 需要说明的是由于书中出现的一些新的专业词汇，国内尚无统一标准译法，只好按实际含义译出。由于译者水平有限，错误和不妥之处敬请广大读者指正。 本书由傅曦、张昌利和瞿芹翻译，书中所有例子在Palm IIIc 和 POSE 模拟器上调试通过。如有疑问可联系：fxqq@sina.com 衷心期望通过本书的学习你能成为Palm OS高级开发人员中的一员。
上传时间： 2013-12-21
上传用户：zhanditian
