Optical module firmware program online upgrade method supporting version fallback

Abstract

The invention relates to an optical module firmware program online upgrade method, comprising the following steps: S1, activating an upgrade identifier, and entering an upgrade mode; S2, receiving upgrade program command parameters; S3, receiving upgrade program data, and writing the upgrade program data into a corresponding application program partition after checking that the upgrade program data is correct; S4, checking the upgrade program data written into the corresponding application program partition, and trial-running the upgrade program after checking that the upgrade program data is correct; and S5, completing application program upgrade, retaining related application program upgrade information according to the result of trial run, and exiting from the upgrade mode. The problem that service is interrupted during online upgrade of an optical module is solved. Moreover, because of special design, the method supports a variety of communication interfaces, firmware with a greater number of codes and a function of firmware version fallback to the version before upgrade, and is applicable to 8051 series MCU online upgrade.

Description

technical field [0001] The present invention relates to an upgrade and maintenance method for optical communication equipment, in particular to an online upgrade method for firmware program of an optical module in the field of optical communication. There will be no interruption of business. Background technique [0002] At present, optical modules are widely used in the optical communication industry. With the improvement of technology, the miniaturization of size and the diversification of functions, the maintainability requirements are becoming more and more important. In practical applications, when the optical module has been activated in the project, if it is necessary to adjust the individual performance indicators of the optical module or repair the firmware program defects of the optical module, the online upgrade function of the firmware program is essential. Generally, there are three ways to upgrade the firmware program of the optical module in use: one is to re...

AI Technical Summary

Problems solved by technology

Generally, there are three ways to upgrade the firmware program of the optical module in use: one is to recall the module, and the factory uses professional tools to upgrade after opening the shell. This method interrupts the business, and the cost and cost are very high; The method can realize online upgrade, but it will interrupt the business and cause customer loss; the third is the online upgrade without interrupting the business, which will realize seamless upgrade without interrupting the business and will not cause customer loss

At present, some domestic and foreign MCU manufacturers provide the in-application upgrade technology (IAP) of the MCU firmware program. Most of these upgrade technologies have defects. On the one hand, the size of the upgrade file, the upgraded communication interface, and whether the upgrade will cause customer business interruption are not well considered; On the other hand, there is a problem that the module firmware cannot be restored after the MCU upgrade fails; these will cause unpredictable risks to operators

And for the 8051 series MCU, the on-chip flash memory of the MCU is relatively small, and there are file size and interface limitations in the online upgrade. At present, the traditional upgrade method cannot solve the problem of supporting the upgrade rollback function.

Images