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Description: m16+cp2200组成的网络接口。
m16使用内部RC振荡8M，如果要提高主频，请注意修改模拟总线读函数。
cp2200模块使用www.icdev.com.cn的，更改pin44连接VCC，即总线复用方式，地址数据复用。
软件编写使用avrstudio4.12+sp4+winavr（avrstudio自带的winavr嵌入方式）。
硬件连接：
m16 | cp2200
PORTA | AD0－7
PB0 | RST
PB1 | CS
PB2 | RD
PB3 | WR
PD2 | INT
PD3 | ALE(A3)
由于采用的是m16做为主控，只能使用总线模拟方式，其读写速度有限，经测试约为双向11.8kBps(90kbps)。
由于ram有限，仅仅采用了332Bytes的数据缓冲做为收发buffer，超过此长度的以太网包将抛弃。
此工程文件仅仅做为cp220x的一个移植范例，高级tcpip应用代码因商业缘故不会提供，请勿找我询问。-m16 cp2200 a network interface. M16 use of internal RC oscillator 8 M, if we are to raise the frequency, please note time change Bus simulation function. Cp2200 module uses www.icdev.com.cn. changes pin44 connecting VCC, bus multiplexing, address data multiplexing. Software programmers use avrstudio4.12 sp4 winavr (bringing their avrstudio winavr embedded in the way). Hardware connections : m16 | cp2200 PORTA | AD0-7 pins | RST PB1 | CS PB2 | RD PB3 | WR NC | INT PD3 | ALE (A3) is used as the main control m16, It can only use bus simulation, the literacy rate is limited, After about a two-way test 11.8 kBps (90kbps). As the ram limited, merely using the 332 Bytes of data as a buffer TX buffer, Over this length of the Ethernet packets will be discarded. This works only as a document of a tr
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Size: 101751 |
Author: 刘晓军 |
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Description: AVR的RAM扩展方法,在设计ARM时很有帮助哦
Platform: |
Size: 11743 |
Author: longagef |
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Description: AVR单片机的优化RC6 加密算法（速度快，其优化思想绝对值得学习）
在有128bytes RAM 的AVR单片机上执行 rc6 16/10/8(16 bit/10 rounds/8 bytes keys)
* 对多数代码进行了 C 语言优化，对数据相关循环移位，模乘等用ASM优化
* 在4MHz无乘法器的AVR上得到平均 1172 Bytes/s的加解密速度。
* 编译器: AVR-G-AVR optimization RC6 encryption algorithm (faster, optimizing their thinking definitely worth learning) 128bytes of RAM in the AVR on the implementation of production 16/10/8 (16 bit/10 rounds/8 bytes keys)* for the majority of code optimization of the C language the data related to cycle shift, mode used by other optimization* ASM 4MHz without the multiplier be average AVR 1172 Bytes/s speed encryption and decryption.* Compiler : AVR-G
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Size: 5120 |
Author: 陈谭 |
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Description: fitted with the external ram for avr
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Size: 1024 |
Author: 潘達 |
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Description: 使用DSP软件实现UART功能.一般教科书上提供的UART收发的程序往往是一段采用轮循（Polling）方式完成收发的简单代码。但对于高速的AVR来讲，采用这种方式大大降低了 MUC的效率。在使用AVR时，应根据芯片本身的特点（片内大容量数据存储器RAM，更适合采用高级语言编写系统程序），编写高效可靠的UART收发接口（低层）程序。下面是一个典型的USART的接口程序。-use DSP software UART functions. General textbooks UART transceivers provide the procedure is often used for Round Robin (Polling) transceiver accomplished a simple code. But for the AVR-speaking, the adoption of this approach greatly reduces the efficiency of MUC. The use of AVR, according to the characteristics of the chip itself (large-capacity on-chip data RAM memory, more suitable for the preparation of high-level language system procedures), the preparation of highly efficient and reliable UART interface transceiver (lower) process. Below is a typical USARTs interface procedures.
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Size: 5120 |
Author: 张倩 |
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Description: 在ATmega16芯片上移植的ucosii系统应用，使用ICCAVR编译器。由于ATmega16芯片仅仅有16k的rom和1k的ram，因此这个移植范例中仅使用了系统延时函数来点亮led。-the ATmega16 chip transplant ucosii applications, use ICCAVR compiler. As ATmega16 mere 16k chip rom the 1k and the ram, Therefore, the transplant use only example of the system to function delay led lit.
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Size: 76800 |
Author: 韩兆伟 |
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Description: SED1335驱动320x240图形液晶驱动演示程序320x240液晶模块配用sed1335驱动接口板，sed1335驱动接口板上配用32K ram-SED1335 drive 320x240 graphics LCD driver demo program 320x240 LCD module using block sed1335 driven interface board, the board sed1335 driven interface using 32K ram
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Size: 15360 |
Author: 江川 |
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Description: AVR单片机访问大于64K的外部RAM.
.-AVR visit more than 64K of external RAM
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Size: 7168 |
Author: 邓小平 |
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Description: 用C51实现的拼音输入法,这是改写的网友 embuffalo、独步上载在www.21ic.com自由发布区的由张凯原作的51上的拼音输入法程序。
原作使用了一个二维数组用以查表，我认为这样比较的浪费空间，而且每个字表的索引地址要手工输入，效率不高。所以我用结构体将其改写了一下。就是大家现在看到的这个。
因为代码比较的大，共有6,000多汉字，这样就得要12,000 byte来存放GB内码，所以也是没办法的 :-(
编译结果约为3000h,因为大部分是索引表，代码优化几乎无效。
在Keil C里仿真芯片选用的是华邦的W77E58，它有32k ROM, 256B on-chip RAM, 1K on-chip SRAM (用DPTR1指针寻址,相当于有1K的片上xdata)。条件有限，没有上片试验，仿真而已。
打算将其移植到AVR上，但CodeAVRC与IAR EC++在结构体、指针的定义使用上似乎与C51不太一样，现在还未搞定。还希望在这方面有经验的网友能给予指导。-C51 with the Pinyin input method, which is rewritten netizens embuffalo. Unrivaled www.21ic.com available in the free publication of the original work by Kai-51 on the Pinyin input method procedures . Appreciate the use of a two-dimensional array for the look-up table, I think this is a waste of space. Each of the characters but the index table to manually input address, efficiency is not high. I use the structure to rewrite a bit. We see now is this. Because the code comparison, a total of 6, more than 000 Chinese characters, this must be 12, byte to store 000 GB code, is not the way to compile results :-( about 3000h. because most of the index table. Code Optimization almost ineffective. Keil in the C simulation uses the chip in W77E58 Winbond, It has 32 k ROM 256B on-chip RAM, 1K on-chi
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Size: 14336 |
Author: Jawen |
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Description: m16+cp2200组成的网络接口。
m16使用内部RC振荡8M，如果要提高主频，请注意修改模拟总线读函数。
cp2200模块使用www.icdev.com.cn的，更改pin44连接VCC，即总线复用方式，地址数据复用。
软件编写使用avrstudio4.12+sp4+winavr（avrstudio自带的winavr嵌入方式）。
硬件连接：
m16 | cp2200
PORTA | AD0－7
PB0 | RST
PB1 | CS
PB2 | RD
PB3 | WR
PD2 | INT
PD3 | ALE(A3)
由于采用的是m16做为主控，只能使用总线模拟方式，其读写速度有限，经测试约为双向11.8kBps(90kbps)。
由于ram有限，仅仅采用了332Bytes的数据缓冲做为收发buffer，超过此长度的以太网包将抛弃。
此工程文件仅仅做为cp220x的一个移植范例，高级tcpip应用代码因商业缘故不会提供，请勿找我询问。-m16 cp2200 a network interface. M16 use of internal RC oscillator 8 M, if we are to raise the frequency, please note time change Bus simulation function. Cp2200 module uses www.icdev.com.cn. changes pin44 connecting VCC, bus multiplexing, address data multiplexing. Software programmers use avrstudio4.12 sp4 winavr (bringing their avrstudio winavr embedded in the way). Hardware connections : m16 | cp2200 PORTA | AD0-7 pins | RST PB1 | CS PB2 | RD PB3 | WR NC | INT PD3 | ALE (A3) is used as the main control m16, It can only use bus simulation, the literacy rate is limited, After about a two-way test 11.8 kBps (90kbps). As the ram limited, merely using the 332 Bytes of data as a buffer TX buffer, Over this length of the Ethernet packets will be discarded. This works only as a document of a tr
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Size: 101376 |
Author: 刘晓军 |
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Description: TinyWorks操作系统。
每个任务占6~10个字节的RAM空间，整个系统占1k左右的代码空间，支持16个优先级的占先式调度，支持时间片调度。
最大特点：建立的任务越多、并且系统越繁忙时调度越快，最快比系统闲时快数十倍！
用AVR-GCC编译，支持MEGA8-TinyWorks operating system. Each task for 6 ~ 10 bytes of RAM space, the system as a whole accounted for around 1k code space, 16 support the priority preemptive scheduling, support for time-scheduling. The biggest characteristics : the establishment of the mandate of the more systematic and more heavy scheduling and faster than the fastest system in his spare time a few times fast! Using AVR-GCC compiler support MEGA8
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Size: 7168 |
Author: lbb |
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Description: Proteus 是目前最好的模拟单片机外围器件的工具，真的很不错。可以仿真51 系列、AVR，PIC 等常用的MCU 及其外
围电路（如LCD，RAM，ROM，键盘，马达，LED，AD/DA，部分SPI 器件，部分IIC 器件，...）-Proteus is the best simulation of the external device SCM tools, it is really good. Simulation can be 51 series, the AVR, the popular PIC MCU and the external circuit (such as the LCD, RAM, ROM, keyboard, motor, LED, AD/DA, part of SPI devices, part of IIC devices ,...)
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Size: 2248704 |
Author: 卢在盛 |
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Description: UCOS/II for ICCAVR
- The version of UCOS/II is 2.04
- the original port was done by Ole Saether for the IAR compiler. Jens E.
Holtegaard ported one version using ICCAVR. Joerg Meyer did another port
(using Jens port as a start?). This is basically Joerg s port plus a
little bit of changes and documentation by me.
- YOU MUST DOWNLOAD THE MAIN PART OF THE UCOS/II FROM THE UCOS/II WEBSITE
http://www.ucos-ii.com . The supplied project file assumes the portable
source is in the ..\source directory.
- Joerg has written couple document showing the stack frames etc. but it
is in German :-) They are included in this directory.
- The Timer2 overflow interrupt is used for Timer Tick. If you want to
change that, modify os_cpu_c.c and os_cpu_a.s
- I have tested this using ATMega103 with and without external RAM
using AVR Studio simulator. See test1.c test program. Both Code
Compressed (PRO) and STD versions have been tested. -UCOS/II for ICCAVR- The version of UCOS/II is 2.04-the original port was done by Ole Saethe r for the IAR compiler. Jens E. Holtegaard porte d one version using ICCAVR. Joerg Meyer did anot her port (using Jens port as a start). This is bas ically Joerg's port plus a little bit of changes a nd documentation by me.- YOU MUST DOWNLOAD THE M AIN PART OF THE UCOS/FROM THE UCOS II/II WEBSITE http :// www.ucos- ii.com. The supplied project file assumes the portable source is in the .. \ source directory.- Joerg couple has written document showing the stack frames etc.. but it is in German :-) They are included in this directory.- The Ti mer2 overflow interrupt is used for Timer tick. If you want to change that. modify os_cpu_c.c and os_cpu_a.s- I have teste d this using ATMeg
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Size: 200704 |
Author: zhjol |
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Description: AVR做的SD卡读卡器源程序,带电路原理图-AVR to do the SD card reader source, with circuit schematic diagram
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Size: 93184 |
Author: 汪俊` |
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Description: AVR的RAM扩展方法,在设计ARM时很有帮助哦-AVR
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Size: 11264 |
Author: longagef |
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Description: Proteus6.7是目前最好的模拟单片机外围器件的工具，真的很不错。可以仿真51系列、AVR，PIC等常用的MCU及其外围电路（如LCD，RAM，ROM，键盘，马达，LED，AD/DA，部分SPI器件，部分IIC器件，...） 其实proteus与multisim比较类似，只不过它可以仿真MCU！-Proteus6.7 is currently the best single-chip peripheral device simulation tools, really good. Simulation Series 51 can be, AVR, PIC, such as commonly used in MCU and its peripheral circuits (such as the LCD, RAM, ROM, keyboard, motor, LED, AD/DA, some SPI devices, in fact, part of IIC devices ,...) Proteus with Multisim to compare like with like, but it can simulation MCU!
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Size: 22616064 |
Author: 罗晟 |
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Description: 在AVR上实现jpeg的解码，不过AVR的RAM不够，要外扩。在128上使用没出过问题-In the AVR to achieve jpeg decoder, but the AVR-RAM is not enough to extend outside. 128 not out to use the problem
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Size: 3727360 |
Author: 杜伟 |
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Description: 超轻量级的嵌入式文件系统，只需要1k ram
有源文件而且有丰富的应用实例，avr pic 等-Ultra-lightweight embedded file system, only the active document 1k ram and has a wealth of application examples, avr pic, etc.
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Size: 384000 |
Author: 郑磊 |
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Description: 建立一个属于自己的AVR的RTOS
Proteus6.7 可以用来模拟仿真avr系列的单片机
WinAVR v2.0.5.48 基于GCC AVR的编译环境，好处在于可以在C语言中插入asm的语句
mega8 1K的ram有8K的rom,是开发8位的RTOS的一个理想的器件，并且我对它也比较熟悉-Belong to their own set up an AVR can be used to the RTOS Proteus6.7 simulation avr microcontroller series WinAVR v2.0.5.48 compiler based on GCC AVR environment, the benefits lie in the C language asm statement to insert mega8 1K of ram has 8K of the rom, are 8-bit RTOS development of an ideal device, and I am also more familiar with it
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Size: 157696 |
Author: louwenyan |
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Description: wave player with avr and mmc ram
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Size: 39936 |
Author: mohammad reza |
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