Single-chip microcomputer and method and device for tracking and locating errors in operation thereof

Abstract

The invention discloses a method for tracking and positioning an error in the operation process of a one-chip microcomputer. The method comprises that S1, the one-chip microcomputer is powered on and started, and an ith function module works; S2, an indicator sequence control module controls an ith tracking and detecting module corresponding to the ith function module to detect the state information of the ith function module; S3, if the ith function module is determined to be in a correct state according to the state information of the ith function module, the indicator sequence control module generates an ith preset combined sequence; S4, the indicator sequence control module outputs the ith preset combined sequence through an output pin, and controls an (i+1)th tracking and detecting module to be started according to the ith preset combined sequence; and S5, steps S2-S4 are executed repeatedly until the Nth function module works. According to the invention, the phase when the error occurs in the whole work process of a one-chip microcomputer finished product and the place where the error occurs are determined quickly, and the cost is low. The invention also discloses a device for tracking and positioning an error in the operation process of a one-chip microcomputer, and a one-chip microcomputer comprising the device.

Description

technical field [0001] The invention relates to the technical field of single-chip microcomputers, in particular to a method for tracking and locating errors during operation of a single-chip microcomputer, a device for tracking and locating errors during operation of a single-chip microcomputer, and a single-chip microcomputer. Background technique [0002] During the entire working process of a single-chip microcomputer, it usually goes through many stages and steps such as power-on, reset, hardware initialization, software initialization, and program operation. Or failure probability will also increase. [0003] At present, after the research and development of single-chip microcomputer products are completed and put into production and use, it cannot fully guarantee its correctness and stability in any environment or any working stage and state. Discover, especially various random and low-probability errors and failures that occur in different working environments and o...

AI Technical Summary

Problems solved by technology

[0004] However, the problem existing in the current single-chip microcomputer design is: the single-chip microcomputer may produce some errors that are difficult to locate due to the influence of various internal and external randomness in different applications and environments. It is already in the finished product state, and it is difficult to analyze the inside of the microcontroller to locate the error point and the cause of the error. Therefore, the method of front-end test verification to locate the cause of the error in the current microcontroller design is almost unusable.

At the same time, the test logic or test circuit contained in the single-chip microcomputer is only tested and verified for the specific known functions of the single-chip microcomputer itself. In actual situations, the problems that arise are often similar to random probability phenomena.

In addition, the error recovery method performed by software programs is only a remedial measure for the result caused by the error, but cannot find out the cause of the error.

In addition, outputting the internal error flag of the microcontroller through an external signal can only be indicated within the range of errors known to the designer and developer of the microcontroller, and the implementation cost of this solution is relatively high, and the internal logic processing circuit of the microcontroller is relatively complicated

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