For the C language, the supportedcustom structure typesmainly include structures (struct), enumerations (enum), and unions (union). Among these three types, structures are data formats that encapsulate data objects with related functionalities, serving as an important means to achieve code modularization and are the most commonly used data types. Enumerations name ordinary constants, making the code … Read more
In the advanced applications of the C language, especially in the field of embedded development, “memory” is often the most precious resource. When we need to handle hardware registers, binary protocols, or massive data storage, ordinary variables occupying 1 byte or 4 bytes can easily lead to resource wastage. Bit-fields (Bit-Field) act like a “space … Read more
What are Bit Fields? Imagine you need to store a switch variable that can only be on (1) or off (0). Using a full int (typically 4 bytes, 32 bits) would waste 31 bits of space. Bit fields (also known as “bit segments”) were created to solve this waste. They allow you to partition the … Read more
What are Bit Fields? Imagine you are moving and have many small items: a few screws, some bottle caps, and a few coins. If you use a huge moving box for each item, it can hold them, but it wastes a lot of boxes, and the moving truck won’t fit many boxes.Bit fields are the … Read more
Bit Fields in C Language: Using Bit Fields in Structures In the C language, a bit field is a special type of structure member that allows us to store data in a more compact way. By using bit fields, we can control the number of bits each member occupies, thereby saving memory space. This is … Read more
In embedded development, we often encounter code like this: struct{unsigned int widthValidated : 1;unsigned int heightValidated : 1;} status; What does this definition of a structure variable mean? The main reason is that some information only needs to occupy a few or a single binary bit when stored, and does not require a full byte. … Read more
The author has limited capabilities, and if there are any errors in the text, I would greatly appreciate it if friends could point them out. Thank you! Concept of Bit Fields A bit field (also known as a bit segment) is a data structure that allows data to be stored compactly in bits and enables … Read more