First meet C language, C language learning 04

# preface: The codeword is not easy. Thank you for your likes, comments and collections. If you think it's OK, I hope you can pay attention to it. Thank you for watching. 🌹💖 ヾ (≥ ▽≤ *) o (refueling together) Keyword typedef typedef: as the name suggests, type definition is a type definition, which can be understood here as renamin ...

Posted by Chris16962 on Mon, 18 Apr 2022 04:17:59 +0300

Using ePump framework to write TCP server

ePump framework based on non blocking, multithreading and event driven model can well solve the problems of complex thread scheduling and efficient communication. Using ePump framework can quickly develop various communication server systems, such as common HTTP Web server, RTMP streaming media server, timely communication message system and so ...

Posted by dniry on Mon, 18 Apr 2022 00:38:01 +0300

String and generalized table

strand (1) String is a finite sequence of zero or more characters, also known as string. The value of a string can be a number, letter, or other character. (2) The number of characters in the string is called the length of the string, and the string with zero characters is called an empty string with a length of 0 (3) The subsequence composed o ...

Posted by abhishekphp6 on Sun, 17 Apr 2022 16:26:11 +0300

FSMC version: multi drive (ILI9486L, etc.) drives TFTLCD screen

The type of development board used is STM32F407 series 1, Screen related information Resolution: 320 * 480 Size: 3.5 inches Drive: ILI9486L Pin interface: We choose 16 BTS 8080 Series MCU here IM [] is 010 and 16 data pins are used. 2, Drive settings We can get some information through: CSX: Chip selection signal, used to enable or dis ...

Posted by captain_scarlet87 on Sun, 17 Apr 2022 04:48:58 +0300

IOS – OpenGL ES adjust image white balance / color temperature GPUImageWhiteBalanceFilter

catalogue I brief introduction II Effect demonstration III Source download IV Guess you like it Zero foundation OpenGL (ES) learning route recommendation: OpenGL (ES) learning directory >> OpenGL Foundation Zero foundation OpenGL (ES) learning route recommendation: OpenGL (ES) learning directory >> OpenGL ES transition Zero found ...

Posted by bugz-2849 on Sun, 17 Apr 2022 03:43:36 +0300

Path Statistics (classical dfs to dp problem)

In the past two days, I found a very interesting topic, not that it is very difficult, but that this topic is indeed a classic dfs problem, which can be encountered by basic beginners. However, if this is only the case, this topic is not of great value to say, but it is very special that this topic is a classic dfs to dp problem, which I think ...

Posted by kylebragger on Sat, 16 Apr 2022 12:30:19 +0300

Bluetooth remote control car based on STM32

Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it preface This article introduces the Bluetooth remote control car based on STM32C8T6. There may be a lot of contents, but it is not hydrology, and the procedure is also explained in det ...

Posted by izbryte on Sat, 16 Apr 2022 11:16:36 +0300

C language -- file operation

1, Opening and closing of files First, you need to create a file pointer: FILE* pf;// File pointer variable Definition PF is a pointer variable pointing to data of type FILE. You can make pf point to the FILE information area of a FILE (which is a structure variable). The FILE can be accessed through the information in the FILE information ...

Posted by _DarkLink_ on Sat, 16 Apr 2022 10:15:43 +0300

MM32F3277 I2C accesses LPS22HH air pressure sensor

Foreword The wrong sensor was selected this week. The LPS22HB was selected as LPS22HH, and the document was written in vain 😫 Let's have a more CSDN, or we'll lose a lot. Similarities and differences between LPS22HB and LPS22HH Let's talk about their similarities and differences first Same point The address is the same (so I looked at HH ...

Posted by tysonrileyreznor on Sat, 16 Apr 2022 09:57:36 +0300

Branch and loop statements (C language)

1.if statement Syntax structure: If (expression) Statement; If (expression) Statement 1; else Statement 2; //Multi branch If (expression 1) Statement 1; Else if (expression 2) Statement 2;         else Statement 3; #include <stdio.h> int main() { int a = 0; int b = 2; if(a == 1) { if(b == 2) { ...

Posted by Tryweryn on Sat, 16 Apr 2022 03:19:49 +0300