Embedded system fault diagnosis device and method

Abstract

The embodiment of the invention provides an embedded system fault diagnosis device and method, the embedded system fault diagnosis device comprises a processor CPU unit, a memory DDR unit, a logic CPLD unit and a reset circuit unit, the CPU unit is respectively connected with the DDR unit and the CPLD unit, and the CPLD unit is connected with the reset circuit unit; and the reset circuit unit and the CPU unit are used for transmitting reset fault information to the CPLD unit, so that the CPLD unit detects a reset source and records the reset source in a local register of the CPLD unit, and the DDR unit is used for storing fault data. According to the embedded system fault diagnosis device and method provided by the embodiment of the invention, the fault reason can be effectively analyzed through the reset source information recorded by the CPLD and the pre-fault restart data reserved in the DDR memory, so that fault diagnosis can be performed on the embedded system in a targeted manner.

Description

Technical field [0001] The present invention relates to the field of embedded systems, in particular, to an embedded system fault diagnostic apparatus and method. Background technique [0002] The embedded system is used in most communication devices, and some faults occurs during the normal operation of the embedded system. [0003] For example, the embedded system suddenly restarts, the embedded system suddenly hangs at the startup or normal operation, the time randomness occurs, and the problem occurs accurately, and some problems only have a difficult to replicate and the system. Hanging but cannot be investigated in a better means. [0004] The problem with the above possible problems requires troubleshooting methods to troubleshoot problems, so that problems can be solved in time. Therefore, there is now an urgent need for an embedded system fault diagnosis device to solve the above problems. Inventive content [0005] In order to solve the above problems, embodiments of t...

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Problems solved by technology

[0003]For example: the embedded system suddenly restarts, the embedded system will suddenly hang up during the startup process or normal operation, the time of the problem is random, and the problem cannot be accurately determined time, some problems occurred only once and are difficult to reproduce, and the system hangs repeatedly but cannot be checked by better means, etc.

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