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)

This example shows how to configure external interrupt lines. In this example, the EXTI Line0 (connected to PA0 pin) is configured to generate an interrupt on each rising edge. In the interrupt routine a led connected to PD.12 pin is toggled.-T