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#include "SWM221.h"
int main(void)
{
SystemInit();
GPIO_Init(GPIOA, PIN2, 0, 1, 0, 0); //输入，上拉使能，接KEY
GPIO_Init(GPIOA, PIN5, 1, 0, 0, 0); //输出， 接LED
while(1==1)
if(GPIO_GetBit(GPIOA, PIN2) == 0) //按键被按下
GPIO_SetBit(GPIOA, PIN5);
}
else
GPIO_ClrBit(GPIOA, PIN5);