Multifunctional interface expansion device and method based on ARM

Abstract

The invention provides a multifunctional interface expansion device which is correspondingly provided with physical layer processing units and network layer processing units for bus interfaces with various specifications, and mutual expansion between a bus serial interface and an expansion interface is achieved. Work mode setting and real-time transmission data presenting are achieved through a configuration debugging unit, and good visuality and operability are achieved. Error correction regeneration of original data information is achieved through error code correction mechanisms of network layer protocols of all the bus interfaces, the error code rate of data transmission is effectively reduced, and the integral performance and reliability of the system are improved. A user can carry out testing and function expanding conveniently through an expansion interface unit. Interconnection networking can be achieved by additionally arranging a new lower computer device or a memorizer device, and a humanized and digital data transmission environment is formed.

Description

Technical field [0001] The invention relates to an extended interface capable of realizing data interaction between multiple interface devices, in particular [0002] It relates to an ARM-based multifunctional interface expansion device and method. Background technique [0003] With the rapid development of computer technology, more and more emerging interface methods have emerged. The old interfaces on personal laptops, such as serial ports and parallel ports, have been gradually eliminated, replaced by emerging interfaces such as USB interfaces and network interfaces. . However, due to historical reasons, a large number of industrial electronic equipment and many civilian electronic products still use old-fashioned interfaces such as serial ports and parallel ports. These old-fashioned interfaces have been difficult to communicate with current personal laptop computers. This situation is not conducive to our digital control through personal computers, and this type of old-style...

AI Technical Summary

Problems solved by technology

For example, various serial port to USB, serial port to network port and other devices can be seen everywhere in the market. Although these products can solve the above problems to a certain extent, there are still many shortcomings. Their functions are too single and can only realize one-to-one extension, without any extension function, low degree of intelligence, can only be regarded as a primary extension equipment, the main idea of ​​the design of these devices is the extension of one interface level standard to another interface level standard, This is only an extension of the underlying physical layer, and does not involve the extension of the upper layer network layer protocol standard, so these devices cannot connect to devices with specific network layer protocol standards. In addition, the existing interface expansion devices usually do not have configuration and debugging functions, and cannot The real-time presentation of transmitted data and the setting of specific working modes also limit the application and development of these devices; of course, there are some devices, such as 8-way serial port-to-network port devices, although such devices solve the problem of multi-interface However, it is still impossible to realize the interconnection and communication between interfaces, and it is also impossible to realize the networking problem between various devices with different interfaces through this kind of equipment, and it still cannot meet all the needs.

Images