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Multi-CPLD online upgrading method and device

A firmware upgrade and interface configuration technology, applied in the direction of software deployment, etc., can solve problems such as complex connections, and achieve the effect of flexible configuration

Pending Publication Date: 2020-01-17
SHENZHEN YOUHUA COMM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter what kind of processing, the control signal will be added outside the loading interface, resulting in complicated connection

Method used

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  • Multi-CPLD online upgrading method and device
  • Multi-CPLD online upgrading method and device
  • Multi-CPLD online upgrading method and device

Examples

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Embodiment Construction

[0040] Further description will be made below in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as figure 1 As shown, the present embodiment provides a multi-CPLD online upgrading method, which is used to carry out firmware upgrading to one or more CPLDs, and the method includes steps:

[0042] S1: Configure a type setting circuit for each CPLD, which is used to mark the type value of the corresponding CPLD;

[0043] S2: configuring an SPI interface for the CPLD;

[0044] S3: Send type information to the multiple CPLDs through the SPI interface;

[0045] S4: After the CPLD receives the type information, it judges whether the type value of the type information itself is consistent;

[0046] S5: if so, enable the connection between the internal memory of the CPLD and the SPI interface;

[0047] S6: Download the CPLD firmware upgrade program, and write it into the internal memory through the SPI interface.

[0048] Generally, when designin...

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Abstract

The invention relates to a multi-CPLD (Complex Programmable Logic Device) online upgrading method and a multi-CPLD online upgrading device, which are used for carrying out firmware upgrading on one ormore CPLDs, and the method comprises the following steps of: respectively configuring a type setting circuit for each CPLD, and marking a type numerical value of the corresponding CPLD; configuring an SPI interface for the CPLD; sending type information to the plurality of CPLDs through the SPI interface; after the CPLD receives the type information, judging whether the type values of the type information are consistent; if yes, enabling the connection between the internal memory of the CPLD and the SPI interface; downloading a CPLD firmware upgrading program, and writing the CPLD firmware upgrading program into the internal memory through the SPI interface. According to the method and the device, the existing main control unit, a plurality of CPLD and other hardware modules in the systemare utilized, online upgrading of one or more CPLD can be realized without adding a loading interface, a chip selection signal line and other connecting lines, and each CPLD can be flexibly configured.

Description

technical field [0001] The invention relates to the technical field of computer and digital logic control, in particular to a multi-CPLD online upgrading method and device. Background technique [0002] CPLD (Complex Programmable Logic Device, complex programmable logic device) has the advantages of flexible programming, high integration, short design and development cycle, wide application range, advanced development tools, low design and manufacturing costs, low requirements for designers' hardware experience, confidentiality Strong, popular price and other characteristics, can realize large-scale circuit design, so it is widely used in product prototype design and product production. [0003] With the development of technology, the structure of CPLD has changed from logic macro unit to FPGA structure + built-in Flash mode, so that CPLD has both the excellent performance of FPGA and the non-volatile characteristics of CPLD, which makes the application of CPLD wider. [00...

Claims

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Application Information

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IPC IPC(8): G06F8/65
CPCG06F8/65
Inventor 李竹
Owner SHENZHEN YOUHUA COMM TECH
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