Unified management system and method for serial devices in LINUX

Abstract

The invention discloses a unified management system and method for serial devices in LINUX. The system comprises a kernel space part and a user space part; serial resources are arranged in an operation system layer of the kernel space part; serial applications are arranged in an application layer of the user space part; a dynamic library layer is arranged between the operation system layer and the application layer; and the dynamic library layer is arranged in the user space part and comprises a serial management core module used for managing various serial devices and calling the corresponding serial resources to perform serial communication, and a registry module used for associating serial ID numbers and serial device nodes. According to the technical scheme, a universal interface is provided for an upper layer application, and the purposes of improving data interaction efficiency, lowering complexity of application programming and reducing serial business maintenance and management costs are achieved.

Description

technical field [0001] The invention relates to the communication field, in particular to a unified management system and method for serial port devices under LINUX. Background technique [0002] The Linux system has been more and more used in the field of vehicle applications. A vehicle station needs to be connected to multiple serial devices, such as taximeters, LCD screens, LED screens, printers, etc. If the 2G module needs to use a pseudo-terminal, the program internal Pseudo-terminals may also be used for data interaction. If a 3G module needs to be connected to a USB-to-serial port, it is equivalent to the need for the vehicle station to manage multiple physical, virtual, and extended serial ports. If managed separately, whether it is to create a receiving thread for each serial port for blocking reception, or through periodic non-blocking polling operations, the efficiency of data interaction is relatively low and the complexity of application programming is increased...

AI Technical Summary

Problems solved by technology

If managed separately, whether it is to create a receiving thread for each serial port for blocking reception, or through periodic non-blocking polling operations, the efficiency of data interaction is relatively low and the complexity of application programming is increased.

[0003] At the same time, the physical serial port has the unique characteristics and operation modes of the physical serial port; the pseudo-terminal has the unique characteristics and operation modes of the pseudo-terminal; the USB-to-serial port has the unique characteristics and operation modes of the USB-to-serial port. The above is the same, but the interfaces and usages provided by the system are different, requiring application developers to have a deeper understanding of the use of specific interfaces of various serial ports, which reduces development efficiency and increases the difficulty of development and serial port business maintenance and management the cost of

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