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Communication method based on SPI communication

A communication method and signal technology, which is applied in the field of communication, can solve the problems of frequent interaction between the master device and the slave device, and achieve the effects of reducing the number of queries, reducing the heat generation, and reducing the number of interactions

Pending Publication Date: 2021-01-12
北京寓科未来智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to solve the above technical problems, the present invention provides a communication method based on SPI communication, which solves the problem of frequent interaction between the master device and the slave device when the slave device is required to process data and the master device passively acquires data, thereby improving system performance

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  • Communication method based on SPI communication
  • Communication method based on SPI communication

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Embodiment Construction

[0017] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] Such as figure 1 and figure 2 As shown, a kind of communication method based on SPI communication of the present invention, this communication method comprises SPI main equipment 1, SPI slave equipment 2 and four groups of original connecting wires 3, the two ends of four groups of former connecting wires 3 are connected with SPI master equipment respectively The MISO pin, MOSI pin, CS pin and SCK pin of 1 and the MISO pin, MOSI pin, CS pin and SCK pin of SPI slave device 2 are electrically connected; also includes READY pulse line 4, SPI The master device 1 and the SPI slave device 2 are electrically connected through the READY pulse line 4;

[0019] The commun...

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Abstract

The invention relates to the technical field of communication, in particular to a communication method based on SPI (Serial Peripheral Interface) communication, which solves the problem of frequent interaction between master equipment and slave equipment when the slave equipment needs to process data and the master equipment passively acquires the data, so that the system performance is improved.The communication method comprises an SPI master device, an SPI slave device and four groups of original connecting wires, wherein two ends of each of the four groups of original connecting wires areelectrically connected with an MISO pin, an MOSI pin, a CS pin and an SCK pin of the SPI master device and an MISO pin, an MOSI pin, a CS pin and an SCK pin of the SPI slave device respectively; an READY pulse line is also included, wherein the SPI master device and the SPI slave device are electrically connected through the READY pulse line. The communication method comprises the steps that the SPI slave device processes data, then caches the data and sends a 500HZ pulse signal through the READY pulse line, and the SPI master device monitors the signal and reads the data.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication method based on SPI communication. Background technique [0002] As we all know, SPI is the abbreviation of Serial Peripheral Interface (Serial Peripheral Interface). SPI is a high-speed, full-duplex and synchronous communication bus. At the same time, it saves space and provides convenience for PCB layout. It is because of this easy-to-use feature that more and more chips integrate this communication protocol, such as AT91RM9200, [0003] SPI adopts a master-slave communication mode. The SPI master device (SPI Master) provides clock signals for SPI communication and is the active party of communication. The SPI slave device (SPI Salve) is the passive party of the SPI communication process. The sending and receiving process is controlled by the SPI master device Control, the master device and the slave device are physically connected through four wires. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
CPCG06F13/4282
Inventor 陈浩周洋韩周迎
Owner 北京寓科未来智能科技有限公司
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