The Design And Implementation Of Printer Driver Of Portable Embedded Devices

Currently when doing detection and control of a large engine equipment,we need many large test equipments to complete in a specific occasion,its precision is poor,imperfect and inconvenient to use.The project team develops a portable large engine tester.The tester has the function of data uploading and downloading,data saving and processing,dynamic detection for a large engine equipment,burner to burn.However,the instrument has no print function,it can't print the test report and affects the use of the instrument.In this paper,the print function of the tester is developed based on the early research results of the project team.This paper relies on the project of a portable measurement and control device of a large engine,we studied the hardware and software development environment of embedded portable instrument and researched the arm-based processor,and designed Linux operating system-based software and hardware platform and Linux operating system-based architecture and compiled the drive principle of Linux device.Finally we designed USB-based micro printer system,it supports many cheap printer,Finally extended the interface of embedded device,enhanced the generality of instrument.A portable test and control equipment was designed in this paper,which equipped with Linux operating system,Support preview and print of test report.we can develop the embedded graphics interface on the device.During the process of designing we fully considered that the limited storage resources of embedded devices,and we have proved that application has a good performance.The design scheme of this paper has a good reference value to the design of embedded-system-based intelligent product.