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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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

No matter what kind of processing, the control signal will be added

Method used

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Example Embodiment

[0040] A further description will be given below with reference to the drawings and specific embodiments.

[0041] Such as figure 1 As shown, this embodiment provides an online upgrade method for multiple CPLDs, which is used to upgrade the firmware of one or more CPLDs, and the method includes the steps:

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

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

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

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

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

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

[0048] Generally, when designing and configuring multiple CPLDs, it is necessary to conne

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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

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Claims

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Application Information

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Owner SHENZHEN YOUHUA COMM TECH
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