STM32 Experiment 2: IO Input-EEWORLD

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Port initialization

#include "stm32f10x.h"//PA15void    KEY_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); //Enable external clock

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; //PA15 pull-up input
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}1234567891011

Main function

#include "stm32f10x.h"
 int main(void)
 {
    SystemInit(); //System clock initialized to 72M SYSCLK_FREQ_72MHz  
    delay_init(72);
    LED_Heat();
    KEY_Init();     while(1)
    {        if(KEY1==1)
        {
            delay_ms(10);            if(KEY1==1)
            {                while(KEY1==1)
                {
                    ;
                }
                LED0=!LED0;
            }
        }
    }
}

Keywords：STM32 Reference address：STM32 Experiment 2: IO Input

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