摘要
为了实现电子产品的电容式触摸输入方式,提出了一款基于TTP229的电容式触摸键盘系统的设计方案,并完成了键盘系统的软硬件设计。该键盘被设计成一个独立模块,硬件部分实现按键检测上传信息等功能,软件部分实现键盘按键事件处理等功能。在实际应用中表明,该键盘系统使用简单方便,用户使用自由度较高,可移植性较强,能够满足多数电子产品的使用需求,达到了设计要求。
In order to achieve the capacitive touch input for electronic products, a design of capacitive touch keyboard system based on TTP229 is proposed. And software and hardware design of the keyboard system is completed. The keyboard is designed as a stand-alone module. The hardware part is designed for detecting key and uploading information. The software part is designed for handling event of key pressing. Practical applications showed that the keyboard system is easy to use. There is a high degree of freedom for the users. It has strong portability and can meet the needs of most electronic products. The design requirements are achieved.
出处
《电子设计工程》
2016年第10期123-126,130,共5页
Electronic Design Engineering
