avr 4311

Tags: modbus AVR atmega128Modbus communication protocol was developed by Modicon company in 1979 and applied to the Fieldbus protocol for industrial field control. The Modbus communication system consists of a chip node with programmable control and a common transmission line, which is designed for collecting and monitoring multi-node data. Modbus protocol adopts master-slave mode, the communication system has one host to monitor multiple nodes from t

/blog?21IC blog:?? Http://blog.21ic.com??Industrial blog?: http://blog.gkong.com/???Power Network Blog?:? http://www.dianyuan.com/blog/EDA blog?:? http://www.ednchina.com/blogChina Electronic Network blog:?? Http://blog.electron.cn?E-Man blog:?? Http://www.dianziren.com??Chinese sub-Design network blog?: http://www.cediy.com?The grid blog:?? http://blog.eccn.com/?Study blog?: http://www.studydz.com/html/blog.html?Industrial blog?: http://blog.gkong.com??Circuit diagram???Electronic circuit diagr

, run the program, Effect:The last line prints out exactly the Tiny6410 USB device number.Attention: This can only list USB devices that have drivers installed with the Inf-wizard.exe build . At the beginning, I did not pick up the Tiny6410, the program did not output, plug a U disk, or no output, thought is the program or the library has problems, tangled a will, then a flash, plug in the Development Board try it, sure enough, the program run results as shown above.Continue to learn USB, 2 days

Service, configure rsyncserver to start, and start automatically. (2) Example of cwRsync synchronous backup script Rsync. bat@ Echo offCls"C: \ Program Files \ cwRsync \ bin \ rsync.exe"-avr -- delete/cygdrive/c/opt 192.168.233.14: gzbak/-- port = 1865 (3) Configure windows scheduled tasks Rsync + inotify implement real-time synchronization and backup of Git data Rsync for file backup Synchronization Rsync synchronizes two servers Remote synchronizat

, the interrupt will occur. Second, the sending is interrupted. If the data in the data register is sent completely and the position of the interruption blocking is blocked, the interruption is also sent. I strongly recommend that you use the serial port to complete the interruption. In freemodbus communication, the slave machine receives or sends data. In most cases, the slave machine is in the receiving status and enters the sending status only when data is sent. When the message is sent, the

as long as the pin is connected, it can be adapted. Connect the following pins with the DuPont line 22: Mosi,vcc,rst,sck,miso,gnd.Unfortunately, due to the Arduino IDE's "high-end Air international", it does not recognize this modified firmware of the "Chinese characteristics" usbasp download line, the conventional method can not be burned at all, display the error "could not find USB device" usbasp "" "Avrdude:stk500_getsync (): Not in sync:resp=0x00", unable to connect.3. DispelIn the final a

= "-- force -- ignore-errors -- delete-excluded -- exclude-from = $ excludes -- Delete -- backup-dir =/$ backupdir-" Export path = $ path:/bin:/usr/local/bin # The following line clears the last weeks incremental directory [-D $ home/emptydir] | mkdir $ home/emptydir Rsync -- delete-a $ home/emptydir/$ bserver: $ user/$ backupdir/ Rmdir $ home/emptydir # Now the actual transfer Rsync $ opts $ bdir $ bserver: $ user/current 2. Back up data to an idle Hard Disk #! /Bin/sh Export path =/usr/

of porting this TFT driver, and then try to analyze the PATCH file provided by this foreigner, hoping to improve its own capabilities and be familiar with kernel porting. Environment: ubuntu 13.10 (cross-compilation is set according to the previous article) TFT: 2.4-inch 12864 interface ILI9325 master (purchased for AVR at that time) Http://blog.csdn.net/embbnux/article/details/17394793 The blogger has recently built his own blog and will use it mo

number is 0x5f375a86. For this reason, Lomont wrote the next paper "Fast Inverse Square Root ". Thesis:Http://www.math.purdue.edu /~ Clomont/Math/Papers/2003/InvSqrt.pdfHttp://www.matrix67.com/data/InvSqrt.pdf Reference: Finally, the simplest 1/sqrt () function is provided: Float InvSqrt (float x){Float xhalf = 0.5f * x;Int I = * (int *) x; // get bits for floating VALUEI = 0x5f375a86-(I> 1); // gives initial guess y0X = * (float *) I; // convert bits BACK to floatX = x * (1.5f-xhalf * x); /

you have to do is focus on your creativity (I think it's just a toy ). Okay, although not interested in this. However, people are very sincere when they are responsible for the organizers and collaborators, especially when the organizers give an arduino development kit. Therefore, I will first write an article about installing arduino IDE in Ubuntu and implementing arduino development in Emacs. Table of Contents 1. Environment configuration before installation2. Install arduino3. Uninstall the

concentrated on the keyboard and mouse, because as long as the user's keyboard is controlled, the user's computer is basically controlled. Attackers can hide the attack in a normal mouse or keyboard. When a user inserts a mouse or keyboard containing an attack vector into a computer, the malicious code is loaded and executed. TEENSY Introduction When an attacker customizes an attack device, the attacker adds an attack chip to the USB device. The attack chip is a very compact and fully fun

is also my first experience with microcontrollers),I was a little surprised so analogwrite didn ' t actually output a voltage, but a PWM (pulse-width modulated) sig Nal.After all, the ATmega had a a-d (analog to digital) converter along with Arduino ' sanalogread.The complementaryanalogwrite function is there, but no d-a (digital to analog) converter on the AVR chip itself.Fortunately, there is an easy-to-convert a PWM signal to a analog voltage.Need

smaller, and the increase in complexity means that the execution of the program in the interrupt time is also increased, and the variable timing period should be more careful to avoid interrupt re-entry. SummarizeOf course, most of the above two methods of interrupt response program can be placed in the interrupt program outside the operation, that is placed in the system cycle, but this situation has formed a new error is this large cycle. If this is to be done, then the delay of the cycle o

interfaces to control the overall, quite a total scheduling, of course, a simple function of a CPU independent work is completed. The original 51 series is a bunch of IO port, and then slowly put the commonly used pwm,ad functions such as adding a single-chip microcomputer. Mainly including the use of countless years still a big 51 of the university must teach the series, and Avr,pic,arm,hotek ... In fact, after ARM9, it is unclear what kind of arm,

the installation package, I had to try./install_all.sh arm installs all.This test also let me know the architecture currently supported by the Binutils library.The following installation packages are present (their schemas are also supported):Binutils-aarch64-linux-gnubinutils-mips-linux-gnubinutils-powerpc-linux-gnuWhile the following installation packages are temporarily absent:Binutils-alpha-linux-gnubinutils-arm-linux-gnubinutils-avr-linux-gnubin

models have some knowledge, but I at each stage of learning the understanding of them is different. In my beginner single-chip computer two years, the most important study is 8051 series single-chip microcomputer, model is at89c51, in order to download the program also deliberately bought a simulation downloader.0 years later, during the emergence of a variety of single-chip brand and model, with PIC, SST, AVR32, STM32, and based on the AVR 8-bit MCU

1.let and Const commands1.ES6 new Let and const commands, similar to Var usages, but the variables it declares are valid only within the code block where let is located (block-level scope, ES5 only global and function scopes){let a = 1; var b = 2; } //A is not a variable declared by defined let only within its own block valid //2 varA = []; for(AVR i = 0; i ){A[i] =function() { Console.log (i) }; } A[3] ();//Ten //A[3]) () print out

segments, special structure debug interfaces, diagnostics and serial ports, and some unwanted program code.9.4.5 Ice ToolsThe internal circuit mapping can help us to test the internal circuit of the hardware in a static or dynamic environment.Common tools: Mplab tool kit for common PIC series microcontrollers, AVR JtagiceSummaryThis week I read the 7th, 8, 9 chapters of "Hacker big exposure", mainly about infrastructure attacks, respectively, the tel

main feature is that the program and data are stored in different storage spaces, that is, program memory and data memory are two separate memory, each memory is individually addressed and independently accessed, in order to alleviate the bottleneck when the program runs., the Harvard structure of the computer is composed of CPU, program memory and data memory, program memory and data memory using different bus, thus providing a large memory bandwidth, so that the movement and exchange of data

Recently has been due to the four-axis school application, has been doing this thing, hey, helpless this goods is not as simple as imagined, their own write n long flight control, also did not fly up the plane, can only use open source APM fly control Practice practiced hand Bai, backup APM burning Bootloader method, for future use!Original address: http://bbs.diywrj.com/thread-21628-1-1.htmlRequired tool Material: 1, a avrusbasp programmer and the corresponding write software, recommended prog