Embedded device application program self-recovery method

Abstract

The invention discloses an embedded device application program self-recovery method. The embedded device application program self-recovery method comprises the steps that a secondary bootload program and a factory program of a control chip are developed to obtain compiling files, and the compiling files are burned in Flash; if an application program of the control chip cannot be started normally, the control chip is restarted, a primary bootload program is automatically loaded, and the secondary bootload program is loaded; the level signal change of an I / O pin is detected, and the factory program is loaded from the Flash; the factory program reads data of an embedded device communication interface, completes application program reading and stores the program in the Flash; the control chip is restarted again, the primary bootload program is automatically loaded, and the secondary bootload program is loaded; the stored application program is loaded in the Flash, and self recovery of the control chip program is completed. The embedded device application program self-recovery method makes a self-recovery function of the application program of the control chip more reliable, stable and high in speed.

Description

technical field [0001] The invention belongs to a self-recovery method of an embedded device application program. Background technique [0002] With the development of economy and technology and the improvement of people's living standards, embedded devices are used more and more widely, and embedded devices also play an incomparable role in people's production and life. [0003] Embedded devices generally have functions such as self-control and intelligent algorithms because of the presence of embedded chips. And the play of the control function of the embedded chip completely depends on the control program of the embedded chip. At present, the application program of the embedded system is placed on the off-chip Flash. When the application program is upgraded, the embedded chip will adopt the Flash Boot mode. However, due to an unexpected power failure or other faults, the programming of the Flash was suddenly interrupted, so the programming was not completed. However, t...

AI Technical Summary

Problems solved by technology

However, due to unexpected power failure or other failures, the programming of Flash was suddenly interrupted, so the programming was not completed.

However, the current embedded chips generally do not have the U-boot self-recovery function of the linux system, so the consequence is that the program cannot run normally, and the program needs to be burned with an emulator after returning to the factory.

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