Asynchronous serial communication data exchange method based on FPGA (Field Programmable Gate Array)

Abstract

The invention discloses an asynchronous serial communication data exchange method based on an FPGA (Field Programmable Gate Array), and relates to the field of data communication technology. The method comprises the following steps: saving serial path information configured by a host side as a transmission control list; writing checked data into receiving buffer of a receiving / sending buffer area;polling the receiving buffer of the receiving / sending buffer area; finding the data being written; searching for a serial port path which can be sent in the transmission control list; writing the data into corresponding sending buffer in the receiving / sending buffer area; and sending the data in the corresponding sending buffer. According to the method, logic configuration is performed in the FPGA, thereby realizing data forwarding of an asynchronous serial port, saving hardware resources, lowering the application difficulty, and facilitating the development of data communication.

Description

technical field [0001] The invention discloses a data exchange method, relates to the technical field of data communication, in particular to an FPGA-based asynchronous serial port communication data exchange method. Background technique [0002] Serial port communication is widely used in digital communication systems, but the number of serial ports in most systems is very limited. However, in a system where multiple modules need to communicate with each other, the existing methods usually require that each module must be connected to a serial port for data communication, which undoubtedly increases hardware resources and debugging difficulties during use, which is not conducive to The development of data communication. [0003] However, the present invention provides an FPGA-based asynchronous serial communication data exchange method, uses FPGA for logic configuration, realizes data forwarding of asynchronous serial ports, saves hardware resources, simplifies application...

AI Technical Summary

Problems solved by technology

[0002] Serial communication is widely used in digital communication systems, but the number of serial ports in most systems is very limited

However, in a system where multiple modules need to communicate with each other, the existing methods usually require that each module must be connected to a serial port for data communication, which undoubtedly increases hardware resources and debugging difficulties during use, which is not conducive to The development of data communication

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