Communication system and method based on SPI bus

A technology of SPI bus and communication system, applied in the direction of bus network, transmission system, digital transmission system, etc., can solve the problems of low recognition efficiency and lack of slave station feedback, and achieve the effect of ensuring recognition efficiency and accuracy
CN114598566APending Publication Date: 2022-06-07山东新松工业软件研究院股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
山东新松工业软件研究院股份有限公司
Publication Date
2022-06-07

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Abstract

The invention relates to the technical field of backplane bus communication, in particular to a communication system and method based on an SPI bus. According to the system and the method, a master station and at least one slave station connected with the master station in a daisy chain mode are adopted; the master station is used for sending a starting frame to the slave station; the slave station is used for generating and outputting a response frame corresponding to the starting frame after receiving the starting frame; the master station is further used for confirming the number of the slave stations based on all the response frames when the master station receives the starting frame and all the response frames, the communication system and method based on the SPI bus can achieve a slave station feedback mechanism, and the recognition efficiency and accuracy of the number of the connected slave stations are guaranteed.
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Description

technical field

[0001] The present invention relates to the technical field of backplane bus communication, in particular, to a communication system and method based on an SPI bus. Background technique

[0002] Most of the existing SPI interface daisy-chain buses use the information frame to send only the length of the SPI shift register, and the transmission direction is mostly from the SPI master station to the SPI slave station. Before the daisy-chain connection, it is necessary to know how many slaves the master is connected to, and it is impossible to identify how many slaves are connected in real time, and such a daisy-chain connection does not support the scanning topology of the slaves, which is difficult to meet some occasions. the requirements below. SUMMARY OF THE INVENTION

[0003] Embodiments of the present invention provide a communication system and method based on an SPI bus, so as to at least solve the technical problems that the existing SPI interface bu...

Claims

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