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SPI (serial peripheral interface) bus circuit, realization method and electronic equipment

A serial peripheral interface and SPI bus technology, applied in the direction of electrical digital data processing, instruments, etc., can solve problems such as inconvenient debugging and upgrading, data conflicts, etc., and achieve the effects of saving costs, enhancing stability, and solving data conflicts

Active Publication Date: 2015-08-12
BEIJING PICO TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a serial peripheral interface SPI bus circuit, an implementation method and electronic equipment to solve the problems of online programming mode data conflict and inconvenient debugging and upgrading

Method used

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  • SPI (serial peripheral interface) bus circuit, realization method and electronic equipment
  • SPI (serial peripheral interface) bus circuit, realization method and electronic equipment
  • SPI (serial peripheral interface) bus circuit, realization method and electronic equipment

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Embodiment Construction

[0038] The core idea of ​​the present invention is: aiming at the problems existing in the prior art, utilizing the characteristics of the serial peripheral interface SPI (Serial Peripheral Interface) bus, a kind of time-division multiplexing mechanism based on the SPI bus is proposed to solve the problem of two masters and one master. From the conflict of data reading and storage in the system, the data flow can be effectively managed, and at the same time, it is convenient for later upgrade and debugging of the system. The SPI bus is a high-speed, full-duplex, synchronous communication bus, and it only occupies four wires on the pins of the chip, which saves the pins of the chip and saves space for the layout of the circuit board, and is easy to use . Time-division multiplexing means that at the first moment, the first master accesses a slave to write data, and at the second moment, the second master accesses a slave to read data. Two masters time-division multiplex the same...

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Abstract

The invention discloses an SPI (serial peripheral interface) bus circuit, a realization method and electronic equipment. The SPI bus circuit comprises a first host, a second host and a slave, wherein the first host and the second host are used as main equipment; the slave is used as slave equipment; SPI bus interfaces are respectively formed in the first host, the second host and the slave; the SPI bus interface of the first host, the SPI bus interface of the second host are respectively connected with the SPI bus interface of the slave; a control interface is formed in the first host; a control lead pin is arranged on the second host; the first host sends control instructions to the control lead pin of the second host through the control interface for realizing the time-sharing multiplexing of the SPI bus interface of the slave by the first host and the second host. The SPI bus circuit has the advantages that the time-sharing multiplexing mechanism is realized, the data flow direction is effectively managed, the transmission and the storage of the data are realized, and meanwhile, the later-stage debugging and upgrading of the system are convenient.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a serial peripheral interface SPI bus circuit, a realization method and electronic equipment. Background technique [0002] In the circuit of the prior art, the configuration information of the system and the debugging and upgrading program are all in the offline programming mode. This offline programming mode requires a large number of tools and equipment to complete the programming, and it needs to be powered off after the information burning is completed. Connections such as data reading devices are complicated to operate and costly; compared with the offline programming mode, the online programming mode has a lower cost, does not need to be powered off, and is easy to operate, but there are data storage and read data in the online programming mode. The problem of conflicts and inconvenient debugging and upgrading in the later stage, so there is an urgent need for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 邓雪冰朱明代崇光
Owner BEIJING PICO TECH
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