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2011, 02, v.39 19-21
电阻式触摸屏的硬件接口电路与校准算法
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摘要:

介绍了触摸控制芯片ADS7843的基本工作原理及其与单片机的接口电路设计,给出了触摸屏的坐标变换及校准算法,并用数据证明了此算法的可行性.采用MSP430单片机作主控芯片,液晶采用武汉中显分辨率为800×480的7寸触摸屏,验证了该校准算法在实际应用中的效果.

Abstract:

Introduces the working principle of chip ADS7843 for touch screen′s control,gives the interface circuit of ADS7843 with MCU,presentes the coordinate transform and calibration algorithm for touch screen,and testifies the feasibility of algorithm by data.The circuit uses MSP430 series MCU to control a touch screen LCD with 800×480 pixels,which is manufactured by Wuhan Zhongxian Company,the test verifies the effect of the calibration algorithm in actual application.

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中图分类号:TP334.3

引用信息:

[1]谭翠兰,何立言.电阻式触摸屏的硬件接口电路与校准算法[J].江汉大学学报(自然科学版),2011,39(02):19-21.

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