Black box apparatus of embedded system and realization method for black box apparatus

Abstract

The invention discloses a black box apparatus of an embedded system and a realization method for the black box apparatus. The black box apparatus comprises a sub-software running state monitoring module, an exception interrupt generation module and a black box; the sub-software running state monitoring module monitors running states of sub-software; the exception interrupt generation module is used for generating interrupts during exceptional interruption or reset of the sub-software; a black box comprises a PSoC, an SRAM, a nonvolatile memory and a power supply module; the SRAM stores the running states and reset information of the sub-software in real time; the PSoC interacts with a CPLD and a CPU of the embedded system; and when the embedded system is reset or crashes, all the stored information is read from the SRAM and stored in the nonvolatile memory, and related information is output from the nonvolatile memory according to an instruction. The black box apparatus can achieve recording and monitoring functions of the black box, and is convenient for checking and analyzing exception generation reasons of the embedded system.

Description

technical field

[0001] The invention relates to an embedded system, in particular to a black box device of the embedded system and a realization method thereof. Background technique

[0002] At present, embedded systems are widely used in technical fields such as industrial control, intelligent home appliances, and intelligent management equipment.

[0003] Existing embedded systems, whose functions are mainly focused on intelligent control, generally do not have black box functions. Therefore, after an abnormality occurs in the embedded system, it does not have the ability to store abnormalities. Therefore, after the system restarts due to abnormalities, it cannot accurately Understand the specific reason for the exception. like:

[0004] After the system is restarted due to power failure or abnormal voltage, it is impossible to know exactly which power supply is abnormal;

[0005] After the CPU is reset and restarted, it is impossible to know exactly what type of reset ...

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