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Full duplex SPI-based vehicle machine MCU upgrading method

A full-duplex, vehicle-to-machine technology, applied in the field of communication, can solve problems such as low transmission efficiency, achieve the effect of speeding up the upgrade and improving transmission efficiency

Active Publication Date: 2020-07-17
常州新途软件有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problem of low transmission efficiency of the upgrade data transmission mode in the MCU upgrade method in the prior art, the present invention provides A full-duplex SPI-based car MCU upgrade method to solve the above problems

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  • Full duplex SPI-based vehicle machine MCU upgrading method

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description,...

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Abstract

The invention provides a full duplex SPI-based vehicle machine MCU upgrading method. The method comprises the following steps that S1, an application sends an upgrading request and a bin file versionnumber to an MCU; S2, the MCU verifies the bin file version number, and if the bin file version number can be successfully verified, the MCU sends a request for obtaining verification data to the application; if the verification fails, the MCU replies upgrading failure to the application; S3, the application sends the verification data to the MCU, the MCU verifies the received verification data, if verification fails, the MCU sends a request for obtaining the verification data to the application again, and if verification succeeds, the step S4 is executed; and S4, the MCU and the application module corresponding to the application transmit upgrade data through an SPI protocol. According to the full duplex SPI-based vehicle machine MCU upgrading method, the MCU and the application module can complete synchronous transmission of the upgrading data through the full duplex SPI protocol, so that the transmission efficiency of the upgrading data is greatly improved, and the upgrading speed is increased.

Description

technical field [0001] The invention relates to the field of communication, in particular to a full-duplex SPI-based method for upgrading a vehicle-machine MCU. Background technique [0002] Nowadays, the off-line upgrade of the on-board MCU needs to obtain the upgrade package from the upper-layer APP through data communication to complete the upgrade. In the prior art, UART or unilateral SPI is often used as the communication method for obtaining the upgrade package, but these two communication methods can only perform one-way data transmission when transmitting data, and need to establish communication connections multiple times during communication. Not only will the data transmission efficiency be reduced, but also the upgrade time will be increased. Therefore, it is necessary to invent a method for upgrading the vehicle-machine MCU based on full-duplex SPI. Contents of the invention [0003] The technical problem to be solved by the present invention is: in order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/654G06F13/42
CPCG06F8/654G06F13/4282
Inventor 张华董武
Owner 常州新途软件有限公司
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