嵌入式操作系统Linux中的串口应用编程.pdf

Linux操作系统的主要优点是稳定，内核可以重新编译，并提供了开放的内核源代码。 Linux内核采用模块化设计，即可以独立添加或删除许多功能块。在设计内核时，这些内核模块可以作为选项使用，并在编译系统内核时指定。因此，一种常见的做法是重新编译Linux内核，编译时仔细选择嵌入式设备所需的功能支持模块，同时删除不需要的功能。通过重新配置内核，可以显着减少系统运行所需的内核，从而减少资源使用量。
嵌入式Linux内核——一般不包含串口控制模块，

(The main advantage of Linux operating system is stability, the kernel can be recompiled, and provides open kernel source code. Linux kernel adopts modular design, that is, many function blocks can be added or deleted independently. When designing the kernel, these kernel modules can be used as options and specified when compiling the system kernel. Therefore, a common practice is to recompile the Linux kernel, carefully select the function support module required by the embedded device, and delete the unnecessary functions at the same time. By reconfiguring the kernel, you can significantly reduce the kernel required for system operation, thus reducing resource usage.
Embedded Linux kernel - generally does not include serial port control module,)

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