新手实验二我写的时候PAout(8)=!PAout(8); 写成PBout(8)=!PBout(8);却控制了 PDout(2)=!PDout(2);

767904101 · 发表于 2012-4-3 10:27:45

#include <stm32f10x_lib.h>
#include<sys.h>
#include<delay.h>

int main(void)
{
u8 num;
Stm32_Clock_Init(9);
delay_init(72);
JTAG_Set(0x10);//关闭JTAG SWD
RCC->APB2ENR |= 1<<2; //允许PA时钟
RCC->APB2ENR |= 1<<5; //允许PD时钟
GPIOD->CRL &= 0xfffff0ff;
GPIOD->CRL |= 0x00000300; //输出模式 PD2推挽
GPIOA->CRH &= 0xfffffff0;
GPIOA->CRH |= 0x00000003; //输出模式 PA8推挽
GPIOA->CRL &= 0xfffffff0;
GPIOA->CRL |= 0x00000008; //输入模式 PA0
GPIOA->CRH &= 0x0f0fffff;
GPIOA->CRH |= 0x80800000; //输入模式 PA 13 15
// GPIOA->ODR &= 0xfffffffe; //下拉输入   高电平有效
GPIOA->ODR |= 1<<13;    //上拉输入低电平有效
GPIOA->ODR |= 1<<15;    //上拉输入低电平有效
// GPIOA->ODR |= 1<<8;
// GPIOD->ODR |= 1<<2;

do
{
  if(PAin(0)==1 || PAin(13)==0 || PAin(15)==0)
  {
   if(PAin(0) == 1)
   {
    num = 1;
   }
   else if(PAin(13) == 0)
   {
    num = 2;
   }
   else if(PAin(15) == 0)
   {
    num = 3;
   }
   switch(num)
   {
    case 1:
     Bout(8)=!PBout(8);
     break;
    case 2:
     Dout(2)=!PDout(2);
     break;
    case 3:
     Aout(8)=!PAout(8);
     Dout(2)=!PDout(2);
     break;
   }
  }
  delay_ms(100);
}while(1);
}