Motor control chip awakening method based on SBC

Abstract

The invention discloses a motor control chip awakening method based on an SBC, a motor control chip is monitored and awakened by adopting the design of a three-level combined watchdog, the first-level watchdog is a software watchdog for monitoring an interrupt time sequence with the highest program priority, and dog feeding and resetting are realized through software; the second-level watchdog is a watchdog built in the MCU, and is used for generating a reset signal according to requirements, so that the initialization of the SBC chip is enabled, and the configuration of the third-level watchdog is enabled; the third-level watchdog is an SBC watchdog placed in a while () cycle and used for monitoring whether the while () cycle operates normally or not. The method is mainly applied to monitoring of each interruption time sequence of a chip program, and when the program runs abnormally, hardware-level thorough reset is realized based on the SBC power supply chip, so that the chip is awakened, the situation that the program cannot be normally started due to extremely special situations is prevented, the running robustness of a motor controller is improved, the product failure rate is reduced, and the user experience feeling is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an SBC-based method for waking up a motor control chip. Background technique [0002] With the development of electric vehicles, the design of motor controllers is becoming more and more complex, with more and more functions, and the requirements for functional safety are also getting higher and higher. Accurate identification of abnormal program operation and reset is an important indicator of functional safety. The motor controller MCU program design is becoming more and more complex. Under certain conditions or when the program design is improper, abnormal problems will occur, causing the program to fail to run normally, which brings huge challenges to software engineers. Most motor controller software engineers are engaged in application layer development or underlying algorithm development, and have little understanding of the MCU chip level, especially the internal work...

AI Technical Summary

Problems solved by technology

[0003] The present invention is mainly to solve the reset problem of abnormal operation of the MCU program, and provides a method for waking up the motor control chip based on SBC. It adopts the design of a three-level combined watchdog, and realizes a complete reset of the hardware level based on the SBC power supply chip to prevent The program cannot start normally when it encounters a very special situation, which improves the robustness of the motor controller, reduces the failure rate of the product, and improves the user experience

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