Multi-channel serial communication device, system and method

Abstract

The invention provides a multi-channel serial communication device, system and method, and the communication host comprises a data receiving and transmitting processing control module, a receiving module, a transmitting module, a receiving signal processing module and a transmitting signal processing module, which are constructed based on the internal resources of an FPGA. When the communication host sends a communication signal to the communication slaves, an identity label of the target communication slave is added to the sending signal to obtain a first communication signal, and the sendingsignal processing module sends the first communication signal to each communication slave. Only the communication slave corresponding to the identity label processes the first communication signal and replies an effective second communication signal, and the communication host identifies and processes an effective second communication signal from the multiple paths of second communication signals. The communication host only needs to occupy one receiving module and one sending module in the FPGA, so that the communication hardware cost is reduced, and meanwhile, the utilization rate of internal resources of the FPGA is also improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a multi-channel serial communication system and method. Background technique [0002] In many application scenarios, there is a communication method of one master and multiple slaves. For example, in a large-capacity photovoltaic system, a multi-module cascading and parallel connection method is used. A controller needs to be designed for each module, so there will be multiple modules in the system. A phenomenon in which a controller communicates with a master controller. In this multi-slave controller communication solution, the FPGA usually constitutes the master controller. [0003] Usually this kind of multi-channel serial communication is processed on the FPGA side, and the serial signal reception and analysis are completed one-to-one through the multi-channel serial signal receiving module UART core, for example, as figure 1 As shown, assuming that there...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a multi-channel serial communication device, system and method to solve the problem that the multi-channel serial communication scheme in the related art occupies more resources in the FPGA and leads to high cost. The technical scheme is as follows:

Images