mcu 8051

The CentOS6.3 system is used because the firewall restricts access to tomcat applications on linux servers. Problem reproduction:The tomcat service is started, but the tomcat application page on the server cannot be accessed. Solution: In the firewall configuration, set the port: Command: www.2cto.com # cd/etc/sysconfig # vi iptables to iptables: -A RH-Firewall-1-INPUT-p tcp-m state -- state NEW-m tcp -- dport 8051-j ACCEPT Description: Port

local FPGA manufacturer in China. It has been 40 years since Intel's first 4-bit processor in 1971. Although the embedded industry has undergone dramatic changes, but even if you think it is "Earth to tooth" but simple and practical 8-bit MCS-51 SCM is still unique, especially in the domestic industrial control industry is still very strong vitality. Since its establishment in, capital-Micro has successively launched two generations of csoc: Astro and astroii. The embedded

Author: scruffybear Release time: 19/06/2007 If any reprint is available, please indicate the source and maintain the integrity of the Article. Thank you! In the first two months, I migrated the emosyn TP series chip COs to the tt120 chip. I feel that these two chips, which are the same as emosyn, are still quite different. Aside from all the details, for the single chip type, the TP series chip is the EEPROM chip, and the emosyn tt120 chip is a flash chip. The following describes some main feat

application.Installation conditions:Installation:First click on the link below to download Docker under Windows from the Docker website to install it, but please note that the system requirements are **windows1064 Pro and above or educational versionOfficial website Download: https://store.docker.com/editions/community/docker-ce-desktop-windows　　Run as administrator after the installation package download is complete.　　View information:#docker Info#docker versionTo view the started container　　D

An in-depth understanding and application of C51 to standard Ansic is one of the keys to learning C51. Because most of the extension features are directed to the 8051 series CPU hardware. There are roughly 8 categories: 8051 storage type and storage area, storage mode, memory type declaration, variable type declaration, bit variable and bit addressing, special function register (SFR), C51 pointer L Functi

-based API interface specifies the function set of multimedia applications in detail and organically integrates with applications such as voice and data. The softswitch system that supports multimedia services does not support the Integrated MCU mode adopted by H.320 and H.323 conferencing systems. It makes full use of the open features and advantages of the group exchange bearer network. The following two new layered models can be used to better meet

Transferred from: http://blog.chinaunix.net/uid-20617446-id-3847242.htmlFirst, how to see the size of flash1.1 By model model will be printed on the MCU surface, can be obtained by observation, my is stm32f103rBT6 (The following analysis based on this model), the control of the STM32 product name, Stm32f103rbt6 Flash is 128KB.()Figure 1 Ordering Information scheme1.2 via data sheet (memory map) Flash size can also be obtained from the data sheet, firs

, but now this meaning for the mainstream, the main chip manufacturers of the UART controller flow control basic use HAYES Modem flow control interpretation.In RS232, the RTS and CTS are used to switch direction in half-duplex mode, this paper does not explain;If the UART only RX, TX two signal, to flow control can only be soft-flow control, if there is rx,tx,cts,rts four signal, it is mostly support the hard-flow control of the UART, if there is rx,tx,cts, RTS, DTR,DSR six signal, The possibili

differences in the approach and implementation process for each of the different types of chips, such as the pure number ASIC or hybrid circuit (mix-signal) and the system-level chip (SOC). Here are some of the main issues that are discussed in detail in these basic processes.The main design of the system design to function definition and architecture design, configuration of bus architecture, module design, data flow distribution, clock design and other issues. The bus includes a number of fac

I have summarized two types of chips: master and slave ). This method is just for convenience. Okay. Let's take a look at the master. Generally, this role can be called a SoC (system on chip), that is, a system-level chip. SOC can be divided into three types: MCU (micro control unit), MPU (micro processor unit), and DSP (DSP, there is no clear line between MPU and MCU, but I think this distinction is still

1. encrypt and decrypt a single class file deployed in the JBoss middleware. The principle is to use the "Java source program encryption solution (based on classloader decryption) ()" blog; Import Java. io. bufferedinputstream; import Java. io. bufferedoutputstream; import Java. io. fileinputstream; import Java. io. fileoutputstream; // Encryption Class file public class encryptionclass {public static void main (string [] ARGs) throws exception {bufferedinputstream Bis = new bufferedinputstream

uses RGB space to save the image. One pixel is 24 bits, each 8 bits saves a color intensity (0-255), for example, red is saved as 0xff0000. YUV introduction:YUV is a color encoding method used by European television systems. This method is also widely used in China's radio and television systems. "Y" indicates the brightness (luminance or Luma), that is, the gray scale value, while "u" and "V" indicate the color (chrominance or chroma ). The color TV uses the YUV space to solve the compatibili

To improve system reliability, the rjf4 MCU series has an independent watchdog (iwdg) and a window watchdog (wwdg ). Today's experiment is about the independent watchdog. The clock source used by the independent watchdog is the internal low-speed oscillator LSI. Because the LSE may not be connected, the HSE may be a bad point. When the HSE is used up, the HSI has his opinion... For many reasons, LSI is the best independent watchdog clock. [Iwdg ma

inherently different, we discuss them separately. 4. Hard Panic Generally, the following situation is considered to have occurred kernel panic: The machine is completely locked, cannot use the number key (Num lock), CAPS LOCK key (Caps LOCK), the SCROLL LOCK key (Scroll lock) flashing. If you are under terminal, you should see the kernel dump information (including a "AIEEE" message or "Oops" message) similar to the Windows blue screen 4.1 reasons For hard panic, the biggest possibility is the

-based API interface specifies the function set of multimedia applications in detail and organically integrates with applications such as voice and data. The softswitch system that supports multimedia services does not support the Integrated MCU mode adopted by H.320 and H.323 conferencing systems. It makes full use of the open features and advantages of the group exchange bearer network. The following two new layered models can be used to better meet

DSPs.In the memory organization, the microprocessor and DSP subsystem may have their own independent cache memory (cache), with shared on-chip SRAM and shared external expansion memory. Extended memory generally supports synchronous dynamic random memory (SDRAM) and NAND flash RAM. The FLASH ROM can be used to store the boot ROM, link operating system, and user application's CP ROM. The ROM interface is primarily used to connect the memory Flash Rom,ram interface of the storage program to the s

Summary:This article takes Stm32f103rbt6 as an example to introduce some problems of on-chip Flash (Embedded Flash), including flash size (memory map), block size, page size, register. This knowledge is helpful for writing flash drivers.First, how to see the size of flash1.1 By modelModel will be printed on the MCU surface, can be obtained by observation, my is STM32F103RBT6 (the following analysis based on this model), the control of the STM32 produc

consideration of the real-time monitoring of the single chip microcomputer running status, a chip is generated to monitor the running status of the single chip microcomputer,Commonly known as "Watchdog"(Watchdog) The application of the Watchdog Circuit enables the single-chip microcomputer to work continuously in the unmanned State. Its working principle is: the watchdog chip and the single-chip microcomputerAn I/O pin is connected, and the I/O pin is controlled by a program to regularly send h

ATMEL Corporation announced the launch of its AT91CAP7A-STK entry-level development kit, designed to evaluate its ProcessorCustom cap Microcontroller(MCU) series of entry-level tools. The custom MCU of cap7 allows designers to transfer from the "ARM7 and FPGA" design to a low one-time R D cost (NRE) Single ChipSolution: the cost per device is reduced by about 30%, and the performance is improved by 8 times