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电子工程专辑
5月
Key_Scan按键扫描函数——瑞萨RA系列FSP库开发实战指南(26)
按键程序设计思路可以非常简单:想要知道某个按键是否被按下,只需检测连接到改按键的IO引脚是高电平还是低电平,若是低电平,说明按键正处于被按下的状态。 通过使用R_IOPORT_PinRead函数,我们可以获取某个IO引脚的电平状态。R_IOPORT_PinRead函数原型如下 ...
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