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针对传统的机械按键易损坏,使用寿命短等缺点,采用赛普拉斯公司基于ARM Cortex-M0的PSoC 4系列MCU,设计了一款电容式触摸按键控制的汽车室内阅读灯。首先介绍了电容式触摸按键的基本原理,然后阐述了系统的基本功能,给出了硬件设计原理图及软件设计流程图,最后结合触摸按键的特点给出在线调试参数的基本方法。基于电容式触摸按键的汽车室内灯,简单实用,使用寿命长,提升了用户的体验。
Aiming at the shortcomings of the traditional mechanical keys such as easy damage and short service life, a capacitive touch key control indoor reading lamp was designed by using Cypress’s ARM Cortex-M0 PSoC 4 series MCU. Firstly, the basic principle of capacitive touch keys is introduced. Then, the basic functions of the system are described. The hardware design principle and software design flow chart are given. Finally, the basic method of online debugging parameters is given according to the characteristics of touch keys. Automotive interior lights based on capacitive touch keys are simple and practical, long service life, enhance the user experience.