Abstract : With the development of embedded systems, embedded GUIs used to implement user interaction functions have become a research focus. This paper mainly introduces the design and implementation of a Qt/Embedded touchscreen driver based on S3C2410 under an embedded Linux system. Through an introduction to the working principles and mechanisms of the 2410 hardware interface, Linux device driver, and Qt/Embedded device driver interface, a development scheme for a Qt/Embedded touchscreen driver is proposed, and the Qt-based touchscreen driver function is implemented on relevant application devices. Keywords : Embedded system; Linux; Qt/Embedded (QTE); Touchscreen; Device driver 0. Introduction Embedded Linux, with its open-source nature, robust and stable kernel, customizability, and support and maintenance from professional commercial companies and world-leading free software developers, has attracted the attention of embedded system developers and become a new favorite among embedded operating systems. Touchscreens, due to their user-friendly human-computer interaction, simple and flexible operation, and fast input speed, greatly simplify the input of embedded systems and are widely used. This article introduces the design and implementation of a Qt/Embedded touchscreen based on the embedded Linux system platform. The solution has been successfully applied to the ARM9 experimental box to realize the support of the GUI (Graphical User Interface) interface for the touchscreen [2], and can be customized according to different touchscreens. 1. Research and implementation of touchscreen driver under Linux kernel 1.1 Hardware implementation of this system S3C2410 is an ARM920T core chip with a built-in touchscreen interface launched by Samsung, and ADS7843 is a high-performance touchscreen controller produced by Burr-Brown. This system uses the SPI interface and ADS7843 touchscreen controller chip to complete the design of the touchscreen module [1]. The hardware connection between ADS7843 and S3C2410 is shown in Figure 1. In view of the advantages of the differential working mode of ADS7843, it is configured as differential mode in the hardware circuit. Design and implementation of Qt/Embedded touchscreen based on S3C2410 Full text download