stm32驱动4X4键盘扫描，用于键盘扫描-/******************************************************************************* * File Name : KeyScan * Descr iption : Serial print out the corresponding key value *************************************************

EXTI外部按键中断(MDK)关于stm32的程序-a program about EXTI (Pressing the key and the LED is lighted)

STM32编程、主要是外部按键产生中断控制-STM32 programming, mainly generated external interrupt control buttons