Development and Application of Embedded System Driver based on BREW Platform

Hao Liang, Hua Wu

Department of Information Science and Electrical Engineering, Shandong Jiaotong University, Ji'nan, 250357, China

Abstract: An important application field of embedded system is the development of system driver, which promotes the development of telecommunication industry by taking mobile phone as the entity. The characteristics of the mobile phone is limited capacity, embedded devices in a kind of popular demand is higher, the market will emphasize the capacity of the mobile phone, durability and convenience, the characteristics of the embedded application software will be at a certain time to access the bottom part of the firmware, also to different degree of control of the hardware, it's potential to improve the driver's request, how to solve the problem of hardware resource environment this is particularly important. This paper focuses on the exploration and discussion of this part, and deals with a series of problems existing in BREW platform's embedded system, making the platform have a qualitative leap in terms of speed, efficiency and quality, mainly focusing on the two important issues of graphics and image processing and memory management. Many BREW applications are related to the drawing and processing of images. However, the processing speed of ARM chips is too slow, especially in the field of games, which requires a lot of speed. The speed of screen drawing affects the user's experience. In this paper, BREW is introduced, how to optimize the image resources on the BREW platform, BREW memory management research and optimization, combined with the actual situation analysis, so as to seek the optimal solution.

Keywords: BREW; Embedded; Driver program; Graphic image processing; Memory management