低端单片机处理按键的 单击(短按),长按,双击(无需占用定时器资源)

上传者: 44777220 | 上传时间: 2025-08-07 10:12:58 | 文件大小: 2.87MB | 文件类型: ZIP
在现代电子设备中,单片机作为核心控制部件,扮演着至关重要的角色。尤其是对于成本和资源有限的低端单片机而言,如何高效地处理按键事件是一项挑战。本文将详细探讨一种无需使用定时器资源来实现对按键单击、长按、双击事件处理的方法。 需要了解单击、长按、双击事件的基本定义及其在用户交互中的重要性。单击通常是指用户快速按下然后释放按键;长按指的是按键被持续按住一段时间;双击则是指在短时间内用户快速按两次按键。这些事件的准确识别对于提升用户体验至关重要。 低端单片机资源有限,尤其是定时器资源可能被其他重要任务占用,因此我们需要找到一种不依赖定时器的方法。通常,实现这一功能的思路是通过软件算法来判断按键动作。具体来说,可以通过对按键状态变化的检测和时间间隔的计算来实现。 实现上述功能的关键在于编写一个能够响应按键变化的中断服务程序(ISR),以及一个能够根据按键状态的变化来计算时间间隔的主循环程序。当中断服务程序检测到按键状态发生改变时,可以通过设置一个软件标志位来标记按键状态的改变,随后在主循环中根据标志位来判断按键动作的类型。例如,可以通过记录按键状态的持续时间和两次按键动作之间的时间间隔来区分单击、长按和双击事件。 此外,软件防抖动处理也是必不可少的。因为按键在机械动作中可能会产生抖动,从而在短时间内产生多次无效的按键状态变化。为了防止这种情况,通常需要在检测到按键状态变化后设置一个短暂的延时,忽略在这个延时内所有的按键状态变化,从而达到稳定按键状态的目的。 为了更加具体地实现这一功能,我们可以考虑使用一个状态机来管理按键的状态。状态机可以有多个状态,包括等待按键按下、判断按键动作类型、处理长按动作、处理双击动作等。通过在状态机中合理设计状态转换逻辑,可以实现对不同按键动作的准确识别。 需要注意的是,软件的编写需要紧密结合具体的硬件平台。不同的单片机可能有不同的中断处理方式、寄存器配置方法以及程序编写习惯,因此在实际编写程序时需要参考单片机的技术手册和开发指南。 虽然低端单片机资源有限,但通过软件算法和状态机设计,我们仍然可以在不使用定时器资源的情况下实现对按键单击、长按、双击事件的有效处理。这不仅提升了用户交互体验,也最大化地利用了单片机的资源。实现该功能的关键在于准确地检测按键状态变化、合理地设置软件防抖动、有效地管理按键状态转换以及紧密结合硬件平台的特点进行编程。

文件下载

资源详情

[{"title":"( 135 个子文件 2.87MB ) 低端单片机处理按键的 单击(短按),长按,双击(无需占用定时器资源)","children":[{"title":"LED.uvguix.Administrator <span style='color:#111;'> 72.30KB </span>","children":null,"spread":false},{"title":"LED.axf <span style='color:#111;'> 256.83KB </span>","children":null,"spread":false},{"title":"keilkilll.bat <span style='color:#111;'> 399B </span>","children":null,"spread":false},{"title":"stm32f10x_tim.c <span style='color:#111;'> 106.60KB </span>","children":null,"spread":false},{"title":"stm32f10x_flash.c <span style='color:#111;'> 61.08KB </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.c <span style='color:#111;'> 50.07KB </span>","children":null,"spread":false},{"title":"stm32f10x_adc.c <span style='color:#111;'> 46.09KB </span>","children":null,"spread":false},{"title":"stm32f10x_i2c.c <span style='color:#111;'> 44.71KB </span>","children":null,"spread":false},{"title":"stm32f10x_can.c <span style='color:#111;'> 44.05KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.c <span style='color:#111;'> 37.41KB </span>","children":null,"spread":false},{"title":"system_stm32f10x.c <span style='color:#111;'> 35.72KB </span>","children":null,"spread":false},{"title":"stm32f10x_fsmc.c <span style='color:#111;'> 34.65KB </span>","children":null,"spread":false},{"title":"stm32f10x_spi.c <span style='color:#111;'> 29.52KB </span>","children":null,"spread":false},{"title":"stm32f10x_dma.c <span style='color:#111;'> 28.91KB </span>","children":null,"spread":false},{"title":"stm32f10x_sdio.c <span style='color:#111;'> 28.25KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.c <span style='color:#111;'> 22.68KB </span>","children":null,"spread":false},{"title":"stm32f10x_dac.c <span style='color:#111;'> 18.64KB </span>","children":null,"spread":false},{"title":"core_cm3.c <span style='color:#111;'> 16.87KB </span>","children":null,"spread":false},{"title":"stm32f10x_cec.c <span style='color:#111;'> 11.38KB </span>","children":null,"spread":false},{"title":"stm32f10x_pwr.c <span style='color:#111;'> 8.55KB </span>","children":null,"spread":false},{"title":"stm32f10x_rtc.c <span style='color:#111;'> 8.40KB </span>","children":null,"spread":false},{"title":"stm32f10x_bkp.c <span style='color:#111;'> 8.26KB </span>","children":null,"spread":false},{"title":"delay.c <span style='color:#111;'> 7.74KB </span>","children":null,"spread":false},{"title":"misc.c <span style='color:#111;'> 6.88KB </span>","children":null,"spread":false},{"title":"stm32f10x_exti.c <span style='color:#111;'> 6.80KB </span>","children":null,"spread":false},{"title":"stm32f10x_wwdg.c <span style='color:#111;'> 5.60KB </span>","children":null,"spread":false},{"title":"stm32f10x_dbgmcu.c <span style='color:#111;'> 5.03KB </span>","children":null,"spread":false},{"title":"usart.c <span style='color:#111;'> 4.97KB </span>","children":null,"spread":false},{"title":"stm32f10x_iwdg.c <span style='color:#111;'> 4.80KB </span>","children":null,"spread":false},{"title":"stm32f10x_crc.c <span style='color:#111;'> 3.27KB </span>","children":null,"spread":false},{"title":"stm32f10x_it.c <span style='color:#111;'> 2.36KB </span>","children":null,"spread":false},{"title":"key.c <span style='color:#111;'> 1.77KB </span>","children":null,"spread":false},{"title":"board.c <span style='color:#111;'> 1.69KB </span>","children":null,"spread":false},{"title":"led.c <span style='color:#111;'> 1.52KB </span>","children":null,"spread":false},{"title":"sys.c <span style='color:#111;'> 876B </span>","children":null,"spread":false},{"title":"main.c <span style='color:#111;'> 179B </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.crf <span style='color:#111;'> 347.63KB </span>","children":null,"spread":false},{"title":"usart.crf <span style='color:#111;'> 346.60KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.crf <span style='color:#111;'> 346.21KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.crf <span style='color:#111;'> 344.14KB </span>","children":null,"spread":false},{"title":"key.crf <span style='color:#111;'> 342.48KB </span>","children":null,"spread":false},{"title":"system_stm32f10x.crf <span style='color:#111;'> 341.83KB </span>","children":null,"spread":false},{"title":"delay.crf <span style='color:#111;'> 341.76KB </span>","children":null,"spread":false},{"title":"main.crf <span style='color:#111;'> 341.71KB </span>","children":null,"spread":false},{"title":"led.crf <span style='color:#111;'> 341.67KB </span>","children":null,"spread":false},{"title":"sys.crf <span style='color:#111;'> 340.97KB </span>","children":null,"spread":false},{"title":"misc.crf <span style='color:#111;'> 340.73KB </span>","children":null,"spread":false},{"title":"stm32f10x_it.crf <span style='color:#111;'> 340.14KB </span>","children":null,"spread":false},{"title":"stm32f10x_dbgmcu.crf <span style='color:#111;'> 340.08KB </span>","children":null,"spread":false},{"title":"core_cm3.crf <span style='color:#111;'> 3.85KB </span>","children":null,"spread":false},{"title":"stm32f10x_dbgmcu.d <span style='color:#111;'> 1.96KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.d <span style='color:#111;'> 1.93KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.d <span style='color:#111;'> 1.90KB </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.d <span style='color:#111;'> 1.87KB </span>","children":null,"spread":false},{"title":"system_stm32f10x.d <span style='color:#111;'> 1.85KB </span>","children":null,"spread":false},{"title":"stm32f10x_it.d <span style='color:#111;'> 1.77KB </span>","children":null,"spread":false},{"title":"usart.d <span style='color:#111;'> 1.69KB </span>","children":null,"spread":false},{"title":"delay.d <span style='color:#111;'> 1.63KB </span>","children":null,"spread":false},{"title":"main.d <span style='color:#111;'> 1.62KB </span>","children":null,"spread":false},{"title":"key.d <span style='color:#111;'> 1.60KB </span>","children":null,"spread":false},{"title":"misc.d <span style='color:#111;'> 1.58KB </span>","children":null,"spread":false},{"title":"led.d <span style='color:#111;'> 1.56KB </span>","children":null,"spread":false},{"title":"sys.d <span style='color:#111;'> 1.53KB </span>","children":null,"spread":false},{"title":"core_cm3.d <span style='color:#111;'> 105B </span>","children":null,"spread":false},{"title":"startup_stm32f10x_hd.d <span style='color:#111;'> 63B </span>","children":null,"spread":false},{"title":"LED_STM32F103RC_1.0.0.dbgconf <span style='color:#111;'> 2.35KB </span>","children":null,"spread":false},{"title":"LED_STM32F103ZE_1.0.0.dbgconf <span style='color:#111;'> 2.35KB </span>","children":null,"spread":false},{"title":"LED_LED.dep <span style='color:#111;'> 26.68KB </span>","children":null,"spread":false},{"title":"LED.uvguix.GT-ROBOT <span style='color:#111;'> 71.76KB </span>","children":null,"spread":false},{"title":"stm32f10x.h <span style='color:#111;'> 619.08KB </span>","children":null,"spread":false},{"title":"core_cm3.h <span style='color:#111;'> 83.71KB </span>","children":null,"spread":false},{"title":"stm32f10x_tim.h <span style='color:#111;'> 51.20KB </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.h <span style='color:#111;'> 29.74KB </span>","children":null,"spread":false},{"title":"stm32f10x_i2c.h <span style='color:#111;'> 29.33KB </span>","children":null,"spread":false},{"title":"stm32f10x_can.h <span style='color:#111;'> 26.91KB </span>","children":null,"spread":false},{"title":"stm32f10x_fsmc.h <span style='color:#111;'> 26.38KB </span>","children":null,"spread":false},{"title":"stm32f10x_flash.h <span style='color:#111;'> 24.85KB </span>","children":null,"spread":false},{"title":"stm32f10x_sdio.h <span style='color:#111;'> 21.35KB </span>","children":null,"spread":false},{"title":"stm32f10x_adc.h <span style='color:#111;'> 21.18KB </span>","children":null,"spread":false},{"title":"stm32f10x_dma.h <span style='color:#111;'> 20.27KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.h <span style='color:#111;'> 19.70KB </span>","children":null,"spread":false},{"title":"stm32f10x_spi.h <span style='color:#111;'> 17.31KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.h <span style='color:#111;'> 16.16KB </span>","children":null,"spread":false},{"title":"stm32f10x_dac.h <span style='color:#111;'> 14.88KB </span>","children":null,"spread":false},{"title":"misc.h <span style='color:#111;'> 8.77KB </span>","children":null,"spread":false},{"title":"stm32f10x_bkp.h <span style='color:#111;'> 7.38KB </span>","children":null,"spread":false},{"title":"stm32f10x_exti.h <span style='color:#111;'> 6.66KB </span>","children":null,"spread":false},{"title":"stm32f10x_cec.h <span style='color:#111;'> 6.42KB </span>","children":null,"spread":false},{"title":"stm32f10x_pwr.h <span style='color:#111;'> 4.28KB </span>","children":null,"spread":false},{"title":"stm32f10x_rtc.h <span style='color:#111;'> 3.77KB </span>","children":null,"spread":false},{"title":"stm32f10x_iwdg.h <span style='color:#111;'> 3.74KB </span>","children":null,"spread":false},{"title":"stm32f10x_dbgmcu.h <span style='color:#111;'> 3.73KB </span>","children":null,"spread":false},{"title":"rtconfig.h <span style='color:#111;'> 3.26KB </span>","children":null,"spread":false},{"title":"stm32f10x_conf.h <span style='color:#111;'> 3.16KB </span>","children":null,"spread":false},{"title":"stm32f10x_wwdg.h <span style='color:#111;'> 2.90KB </span>","children":null,"spread":false},{"title":"sys.h <span style='color:#111;'> 2.74KB </span>","children":null,"spread":false},{"title":"stm32f10x_crc.h <span style='color:#111;'> 2.11KB </span>","children":null,"spread":false},{"title":"system_stm32f10x.h <span style='color:#111;'> 2.04KB </span>","children":null,"spread":false},{"title":"delay.h <span style='color:#111;'> 1.94KB </span>","children":null,"spread":false},{"title":"stm32f10x_it.h <span style='color:#111;'> 1.94KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多,未全部展示</span>","children":null,"spread":false}],"spread":true}]

评论信息

免责申明

【只为小站】的资源来自网友分享,仅供学习研究,请务必在下载后24小时内给予删除,不得用于其他任何用途,否则后果自负。基于互联网的特殊性,【只为小站】 无法对用户传输的作品、信息、内容的权属或合法性、合规性、真实性、科学性、完整权、有效性等进行实质审查;无论 【只为小站】 经营者是否已进行审查,用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。
本站所有资源不代表本站的观点或立场,基于网友分享,根据中国法律《信息网络传播权保护条例》第二十二条之规定,若资源存在侵权或相关问题请联系本站客服人员,zhiweidada#qq.com,请把#换成@,本站将给予最大的支持与配合,做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明