Singly Linked List The Zephyr singly linked list is implemented in the following file: zephyr/include/zephyr/sys/slist.h. Zephyr stores singly linked list data in sys_slist_t (i.e., each list element stores a pointer to the next element, rather than the data of the previous element). /** @cond INTERNAL_HIDDEN */ struct _slist { sys_snode_t *head; sys_snode_t *tail; }; /** … Read more
Overview MPSC_PBUF (Multi Producer Single Consumer Packet Buffer) is a circular buffer where data in MPSC_PBUF is managed in packets, and the size of the packets is variable. Users read or store data from MPSC_PBUF in packet units. To reduce data copying in memory, data production is divided into two steps: allocating packet space and … Read more
Overview The search time complexity of a linked list is O(N). As the number of members managed by the linked list increases, the algorithmic cost of searching increases. To address this, Zephyr provides an implementation of a red-black tree, where the time complexity for search and delete operations is O(log2(N)) for a tree of size … Read more
Overview The ring buffer is one of the commonly used data structures in embedded software development, storing content in a first-in-first-out manner, and is used to implement asynchronous “stream” replication of data. Zephyr provides a struct ring_buf abstraction to manage such data structures. Various drivers in Zephyr (UART, Modem, I2S, etc.), as well as shell, … Read more
Note: 1. Thank you all for your attention, continuing to summarize last week’s wonderful content. 2. Last week, a video was shared: BSP Video Tutorial Episode 21: Easily Achieve Variable Length Serial Port DMA Send/Receive with One Click, Supporting Bare Metal and RTOS, Including Two Approaches: MDK and IAR, More Convenient Than CubeMX 0 Weekly … Read more
11.7 Modbus TCP Programming and Experimentation This course does not support sensors that use the Modbus TCP protocol, so we will write two programs: ① modbus_server_tcp.c: Simulate a Modbus TCP sensor ② modbus_client_tcp.c: Operate the sensor The program structure is shown in the figure below: No special connections are required on the hardware. The source … Read more
Today, let’s talk about gcc, g++, and gdb. These three are the big guns in C/C++ development. Once you master them, coding and debugging will feel as easy as drinking water! gcc and g++: Great Helpers for Compilation What are gcc and g++? In simple terms, they are compilers. gcc is mainly used to compile … Read more
Advertising Time Click the card below and give us a follow before you go! 1. Introduction to GDB GDB (GNU Debugger) is a powerful open-source debugging tool that helps developers debug programs written in languages such as C/C++. Mastering the basic usage of GDB is very beneficial for both beginners and experienced programmers. This article … Read more
This article summarizes: This article mainly introduces the process of using Makefile to compile code into executable binary files for microcontrollers and discusses commonly used Makefile syntax. It narrates the transformation from a straightforward Makefile to a more universal Makefile. Introduction to Makefile The most common function of a Makefile is to inform the make … Read more
Makefile is an essential project management file that must be mastered in the development of C/C++ programs in a Linux environment. When you use the make command to compile a project, the make tool first looks for the Makefile in the root directory of the project before it can compile the program based on this … Read more