Hardware watchdog circuit system based on high-pass platform and monitoring method thereof

Abstract

The embodiment of the invention provides a hardware watchdog circuit system based on a high-pass platform and a monitoring method thereof. The system comprises a power supply, a power supply management chip, an AND gate circuit and a main control chip, the output end of the main control chip is connected with the input end of a watchdog monitoring circuit, and if a dog feeding signal is not received within a preset time, the watchdog monitoring circuit outputs a low-level first signal to the AND gate circuit, connects the first input end of the AND gate circuit with the output end of the powersupply management chip, and outputs a high-level second signal to the AND gate circuit when the power supply management chip is in a normal working state. The AND gate circuit can judge and send a reset signal to the main control chip according to the first signal and the second signal and restart the main control chip. According to the embodiment of the invention, by arranging the watchdog monitoring circuit connected with the main control chip and the AND gate circuit, the running state of the system can be monitored in real time, so that the stable running of the system is ensured, and therisk caused by system leakage is avoided.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a hardware watchdog circuit system based on a Qualcomm platform and a monitoring method thereof. Background technique [0002] In a microcomputer system composed of a single-chip microcomputer, because the work of the single-chip microcomputer is often disturbed by an external electromagnetic field, the data of various registers and memory is confused, which will cause the program pointer to be wrong, not in the program area, and take out wrong program instructions, etc. It is possible to fall into an infinite loop, the normal operation of the program is interrupted, and the system controlled by the single-chip microcomputer cannot continue to work normally, resulting in the stagnation of the entire system and unpredictable consequences. Therefore, the system needs to be restarted to ensure the stability of the system. [0003] At present, if the system based on the Qualcomm p...

AI Technical Summary

Problems solved by technology

[0003] At present, if the system based on the Qualcomm platform is stuck or stagnant, the system restarts by powering on and off. However, when the system program runs away, the system based on the Qualcomm platform cannot detect the fault because the program will continue to run. risk to the operation of the system

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