rcc database

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Stm32 RCC clock Analysis

The stm32 chip manual shows clearly that there are four clock sources: 1. HSI (Internal High-Speed clock 8 MHz) provides a clock source that supports BIT system clock 2. HSE (external high-speed clock) provides system clock and RTC clock source 3. LSE (low-speed external clock 32.768 kHz) can provide a clock source for rtc 4. LSI (low-speed internal clock) can provide the clock source for the independent watchdog First, let's analyze the database fu

Stm32 RCC lab MCO foot output clock Waveform

To view the system clock with the oscilloscope, the system clock is output to the MCO pin.After one night, I saw the waveform.First, create an empty project. Code Comment out:; Import systeminit; Delete systeminit write RCC initialization function by yourself; LDR r0, = systeminit; Blx R0The following is a setup function that uses HSI as the system clock. If the PLL is not practical, the HSI is directly output to the MCO pin:Void my_rccinitmcohsi (voi

Learning and understanding of 4.RCC peripherals

RCC Clock module is not good understanding, the first contact I also confused, and I really mastered it is also relatively late, is that I learned to use Register control Development Board to really understand his operating principles and laws, but why I re-revised but placed in the forefront, because this is the whole embedded foundation, beginners are more difficult , but I still want to be able to grasp the best, because the real-time is very impor

RCC for stm32

divides the clock signal (such as HSE) by frequency division or frequency doubling (PLL) to obtain the system clock. The system clock is divided by frequency to generate the clock used by the peripherals;RCC setting process: 1. Reset the RCC register to the default rcc_deinit value. 2. Enable the external high-speed clock crystal oscillator HSE rcc_hseconfig (rcc_hse_on) 3. Wait for the external high-speed

STM32 's clock tree in-depth and RCC configuration

are band-enabled, such as AHB bus clocks, core clocks, various APB1 peripherals, APB2 peripherals, and so on.When a module needs to be used, the corresponding clock must be enabled first. Note that the timer multiplier, when the division of the APB is 1 o'clock, its multiplier value is 1, otherwise its multiplier value is 2.The devices connected to the APB1 (low Speed peripherals) are: Power Interface, Backup interface, CAN, USB, i2c1, I2C2, UART2, UART3, SPI2, window watchdog, Timer2, Timer3,

Reset and Clock Control (RCC) stm32l

Reset:1. System Reset: A Systems Reset Sets all registers-their reset values except for the RTC, RTC BackupRegisters and Control/status Register, RCC_CSRReset Source view: RCC_CSROption byte loader:stm32l15xxx Flash Programming Manual (PM0062)2. Power RESET:A Power Reset sets all registers to their reset values including for the RTC domain3. RTC and Backup registers Reset:Reset Source: A software reset, triggered by setting the Rtcrst bit in the RCC_CSR registerPower Reset (BOR/POR/PDR)Clocks:Fe

crazyflie2.0 RCC Clock knowledge

As the current hand only 16MHZ of the 2520 package of SMD Crystal, 8MHZ This package does not make so small, so first with 16MHZ, so we need to modify the program-related RCC clock:1,stm32f4xx.h#define Hse_value ((uint32_t) 16000000)/*!2,system_stm32f4xx.c/* Pll_vco = (hse_value or hsi_value/pll_m) * Pll_n */#define PLL_M /* USB OTG FS, SDIO and RNG Clock = pll_vco/pllq */#define PLL_Q 7#if defined (stm32f40_41xxx)#define PLL_N 336/* SYSCLK = pll_vco/

What is the use of QT MOC Uic RCC (360ui porting to eclipse)

Moc is mainly used to process signals and slots inside classes containing q_object into moc_xxx files. Because the QT signal and slot part of this is not pure C + +, it is MOC to compile the information contained in Q_object. When you do not use the signal to remove the q_object can also be compiled through. Just can't handle the signal these. RCC is mainly to convert the RC resource file into a byte stream in the form of CPP files, all the resourc

MySQL database basic operations: Create a database, view a database, modify a database, delete a database

This section relates to: Create a database, view a database, modify a database, delete a database Starting Time: 2018-02-13 20:47Create DATABASE: Syntax:Create database name [ library option ];Library Options Description:

"SQL Server" "Recover pending Solution" prompt when attaching files "The log cannot be rebuilt because there is an open transaction/user when the database shuts down, the database does not have checkpoints, or the database is read-only. "Database Recovery"

Tags: new checkpoint library file refresh data loss ever permissions database name allowed Summary article: Http://www.cnblogs.com/dunitian/p/4822808.html#tsql Paste Error First: Spit on the trough for a moment: Go to the Chase: Create a new database with the same name Stop MSSQL Service Replacing

Detailed description of Oracle Database Name, Instance name, database domain name, Database Service name, and Global Database Name

Oracle Database Name, Instance name, database domain name, Database Service name, global database name details database name, Instance name, database domain name, Global Database Name,

1. PHP-obtain MySQL database query result rows mysql database download 64-bit SQL database instance download SQL database patch download

Mysql database: 1. PHP-obtain the number of rows of MySQL database query results: First, define a database interface function, which can be stored separately as a php page and on another php page, first, you must use the include function to include First, you need to define a database interface function, which can be

DBImport V3.1 updated and released CYQ. DBImport database reverse engineering and bulk import database tool V2.0 [added batch Export Database scripts and database design documents]

After another year, I finally updated the version. However, this version only advances to a small bit, from 3.0 to 3.1. The version number is small, which indicates that this change is not big, but let's talk about it:1: The latest CYQ. Data V5 series with better performance have been replaced, and the Data batch insertion speed has been improved. 2: Modify the image type and time type conversion of MySql. 3: Modify the table structure of Txt and Xml. 4: The error output is automatically record

Database Name, database instance name Sid, Database Service name, Global Database Name

I. Database NameIt is the name of the database you created when installing the Oracle software, or the data you created after installation. It is mainly used to install multiple databases in an Oracle database,The distinction between them. A database generates an oracle_service in the Windows Service. The

Database Name, database instance name, and database Domain Name

Database Name, database instance name and database domain name I. Database Name what is database name? The database name is the ID of a database, just like the ID card number of a perso

Database Name, Instance name, ORACLE_SID, database domain name, Global Database Name, service name)

Detailed Description: Database Name, Instance name, ORACLE_SID, database domain name, Global Database Name, service name----------------------------------------------------Database Name, Instance name, database domain name, Global Databa

Create and obtain physical database files and database references in a Windows Phone local database-obtain the physical files of the referenced database

Windows Phone OS 7.1 allows you to store relational data in applicationsProgramThe local database of the independent storage container. The Windows Phone application uses LINQ to SQL to perform all database operations. The LINQ to SQL is used to define the database architecture, select data, and save the changes to the basic

Copy command to copy data between a remote database, a local database, or an Oracle database and a non-Oracle Database

Question 2 SQL * Plus Copy commandProblem descriptionIn SQL * Plus, how does one implement data replication between different tables, whether local or remote?Problem AnalysisThe Copy command in SQL * Plus allows you to copy data between a remote database, a local database, or an Oracle database and a non-Oracle database

Database name, instance name, database domain name, global database name, service name

Tags: global database name SIDdatabase name, instance name, database domain name, global database name , service name,This is a few concepts that make many beginners easily confused. I believe many beginners are as confused as I am in the title of these concepts. Let's get them all figured out right now.1 Database name

MongoDB a database based on Distributed file storage (a database between a relational database and a non-relational database)

environment variable):After executing the VIM ~/.BASHRC command, add the following MongoDB configuration to the bottom:After configuration, use source ~/.BASHRC to make the configuration effective, and then use mongod-version to check whether the configuration was successful:6: Start the MongoDB database, first create the MongoDB data directory, and next create the MongoDB log directory:Start the MANGODB database

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