A multi-channel hdlc-uart conversion system and method based on fpga

Abstract

The invention discloses an FPGA-based multipath HDLC-UART conversion system and method. The system adopts hardware description language to realize conversion of multipath HDLC communication protocols and UART communication protocols based on an FPGA, and a data frame calibration control function. The system comprises an UART data frame acquisition and unpacking module, an UART-data-frame-to-HDLC-data-frame check processing module, an HDLC data frame coding output module, an HDLC data frame acquisition and unpacking module, an HDLC-data-frame-to-UART-data-frame check processing module, an UART data frame coding output module, an UART data frame cut-through forwarding module, an UART control command response module, a forwarding mode control module and an HDLC clock control module and the like. Through construction of multiple groups of the modules above based on the FPGA, a multipath HDLC-UART communication protocol conversion controller is realized, and parameters in the conversion controller are configured flexibly, system design flexibility and design efficiency are improved and the system has a good practical application value.

Description

technical field [0001] The invention belongs to the field of data communication, and in particular relates to a method for realizing an FPGA-based multi-channel HDLC-UART communication protocol conversion controller. Background technique [0002] The HDLC protocol is an advanced data link control protocol formulated by the International Organization for Standardization. It can transmit data of any bit, and can choose a variety of error detection methods according to requirements. It has strong error detection capabilities and is an efficient synchronous transmission protocol. . The full name of UART is Universal Asynchronous Receiver Receiver. It is a serial interface suitable for short-distance communication. It has the characteristics of simple structure and high cost performance. Due to the existence of multiple devices in a large-scale system, these two communication protocols are often involved at the same time. Because the data transmission formats of the two are diff...

AI Technical Summary

Problems solved by technology

At present, there is no processing chip on the market that can unpack, encode, and convert freely configurable UART data frames into HDLC protocol transmission. However, in large-scale systems where these two communication protocols exist at the same time and need to realize information exchange, a chip is urgently needed. A Multi-channel HDLC-UART Communication Protocol Conversion Controller

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