基于LPC1114的电阻式触摸屏与步进电机控制系统开发

摘要

针对目前电阻式触摸屏控制电路设计结构复杂、干扰严重、加重主控制器负担等缺陷,提出利用恩智浦公司LPC1114低功耗、高性能微处理器和双MOS管方式进行电阻式触摸屏控制的设计方案,开发了一套使用触摸屏控制步进电机的硬件系统.实验证明,该系统有效地提高了触摸的准确性,并能实时控制4个步进电机的转动,减轻主控制器负担,提高主控制器的工作效率.%Aiming at the design complexity of resistive touch screen control circuit, interference and the burden on the master controller, the strategy of controlling resistive touch screen based on NXP LPC1114 low-power microcontroller and dual MOS is developped. The experimental result shows that this strategy can effectively improve the accuracy of touch and control four stepper motors, the burden of the master controller is reduced and the efficiency of the master controller is improved.