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Method, sending device and receiving device for SPI transmission control

A transmission control and sending end technology, applied in the field of data transmission, can solve problems such as increasing processor load, and achieve the effect of reducing load and improving flexibility

Pending Publication Date: 2022-04-05
北京紫光芯能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the writing of data requires the processor to write the data to be sent into the register, which increases the load of the processor to a certain extent

Method used

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  • Method, sending device and receiving device for SPI transmission control
  • Method, sending device and receiving device for SPI transmission control
  • Method, sending device and receiving device for SPI transmission control

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Embodiment Construction

[0053] In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

[0054]The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used ...

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Abstract

The invention relates to the technical field of data transmission, and discloses a method for SPI (Serial Peripheral Interface) transmission control, which comprises the following steps of: transmitting data and configuration information stored in a memory to an information register by utilizing a direct memory access DMA (Direct Memory Access) mode; sending a plurality of pieces of data in the information register to a shift register, and sending configuration information of each piece of data to a configuration register; and transmitting the data in the shift register to the SPI peripheral according to the corresponding configuration information in the configuration register. Data and configuration information are transmitted to an information bar register in a DMA mode, and then data transmission is completed by configuring and sending a shift register. In the whole data transmission process, the processor only needs to configure the configuration information of the data and does not need to participate in other links in the SPI communication process. The DMA mode is effectively utilized to transmit data, so that the load of the processor is reduced, and the flexibility of the SPI transmission mode is improved. The invention also discloses a sending device and a receiving device.

Description

technical field [0001] The present application relates to the technical field of data transmission, for example, to a method for SPI transmission control, a sending device, and a receiving device. Background technique [0002] SPI (Serial Peripheral Interface, serial peripheral port), is a high-speed full-duplex communication bus. It uses three buses and one or more chip select lines for data transfer between master and slave devices. The three buses are SCLK (Serial Clock, clock signal), MOSI (Master Output / Slave Input, master data output / slave data input), MISO (Master Input / Slave Output, master data input / slave data output) , the chip select line SS (Slave Select) is used by the master device to select a slave device on the bus and communicate with it. [0003] At present, in order to realize control in the SPI transmission process, a kind of SPI transmission control method is provided in the prior art, comprising: writing the data to be sent to the sending register thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F5/06G06F13/28G06F13/42
Inventor 张芬
Owner 北京紫光芯能科技有限公司