access port and trunk port in vlan

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STM32 Keil cannot enter emulation pin port error 65:access violation at 0x40021000:no ' read ' permission

Use MDK to create a stm32f103ze core project yourselfAdd the source code after compiling, normal, online simulation single-step implementation of the following problemsError 65:access violation at 0x40021000:no ' read ' permissionI found a problem with the setup inside Debug.http://www.cnblogs.com/xiaobo-Linux/The main items are the following 2 settingsDialog DLL Default is DCM3.DLLParameter default is-PCM3should readDialog DLL Default is DARMSTM.DLLP

Nginx configuration-Limit user access to prevent non-80 port turn 80 tricks

server {Listen 8890;server_name you.sever.com.cn;Location ~ ^/index.html {Root/code/qhfaxweb_re/errorpages;}Location/{if ($http _x_forwarded_for!~* "***.250.***.27") {return 404;}Proxy_pass http://**.**.44.56:8890;Proxy_set_header Host $host: 8890;Proxy_set_header X-real-ip $remote _addr;Proxy_set_header x-forwarded-for $proxy _add_x_forwarded_for;}}This article is from the "Ops Road" blog, please be sure to keep this source http://vekergu.blog.51cto.com/9966832/1697937Nginx configuration-Limit

Start Tomcat project under Eclipse, Access tomcat default port display 404 error

Solution: Open the server view of Eclipse, double-click the tomcat you configured, open the edit window, view the server locations, and see if the first option is selected (the first option by default), which is the Use workspace metadata ( Does not modify Tomcat instation),You should choose the second option, use Tomcat installation. Then you can start the service again. If the three radio boxes in the server location are grayed out, then you need to delete the previously imported, import them

Install C-Kermit serial port access development board

In linux, the serial port debugging tools mainly include minicom and kermit. For installation and use of minicom, see the following blog: http://www.cnblogs.com/tanghuimin0713/p/3562218.html to introduce the installation and use of kermit:1. Install1) download the c-kermitsource code package at http://www.columbia.edu/kermit/ck90.html2) decompress the package 3) make linux4) mv wermit/usr/local/bin/kermit2. ConfigurationConfiguration command Line/dev

STM32 continuous access to the serial port interrupt Problem solving method

STM32 sometimes go into interruptions, and the solution is as follows 1. When the serial port initializes the configuration, the ore overflow interrupt needs to be opened, as shown in the red code below void Usart_init (void) {gpio_inittypedef gpio_initstructure; Nvic_inittypedef nvic_initstructure; Usart_inittypedef usart_initstructure; Rcc_apb2periphclockcmd (Rcc_apb2periph_usart1, ENABLE); Turn on the serial Clock gpio_pinafconfig (g

php-using source code to deploy 80 Port Zen Path (PHP) on IIS, unable to access Web pages

Phpiis Since IIS on my server already exists several sites that are running and have different domain names bound, I would like to use the Zen channel also deployed on IIS 80 port, I downloaded the source code according to the official website of the tutorial installation, visit http://localhost/www/index.php reported the following error. Excuse me, what's going on? 13:55:21 session_start (): Cannot find save handler ' Wincache '-session startu

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