A method for information interaction between an application program of an automatic vending machine and a hardware device

Abstract

The invention discloses a method for information interaction between an application program of an automatic vending machine and a hardware device. An intermediate layer is added between the application program and the hardware device, and the intermediate layer communicates with the hardware device to realize data interaction. The application program passes AIDL And the broadcast realizes the interaction with the middle layer; the application program judges whether the industrial computer resources are surplus, and if the system resources are surplus, execute: call the interface by broadcasting; if there is no surplus, execute: call the interface by AIDL; application The program calls the standard interface in the middle layer by sending a broadcast or calling AIDL, and obtains the result of the interface call by receiving the broadcast or AIDL interface callback. The beneficial effects of the invention are: calling AIDL can improve the stability and immediacy of the interface calling function; avoiding the interface calling problem caused by misinitialization of the application program; the application program is more flexible and efficient when executing the interface calling transaction.

Description

Technical field [0001] The present invention relates to the field of automated vending machine terminal, and Background technique [0002] Today, the Internet of Things has penetrated into various corners of life, intelligent, and automation have gradually become the development goals of all walks of life, and the retail industry is no exception. The vending machine is quickly expanding its market share in the retail industry with its advantages of intelligence, convenience. [0003] The saleser system is also developing in the direction of modularity, and the saleser application is no longer a huge application of multiple business, but the part of the hardware interaction is peeled out from traditional garage applications, and become an intermediate layer. Provide support for the independent development of the solder program and the independent production of hardware equipment, such as the Patent Nos. The intermediate layer connected to the hardware device, the application and t...

AI Technical Summary

Problems solved by technology

And this setting is actually unreasonable, because the protocol used by the middle layer should be determined by the hardware device

The initialization operation of the application program on the middle layer is not only a redundant operation, but also when there are too many initialization parameters, the setting of the middle layer may not match the actual hardware, making the device unable to use normally

[0006] When the middle layer communicates with hardware devices, it generally adopts the form of one question and one answer. Sending instructions and receiving instructions are put in one transaction and executed serially. Other communication operations make the communication efficiency not high

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