我的ARM7程序

#include
#include "stdio.h"
#include "Motor.h"
#include "LED.h"
#include "KEY.h"
#include "SysTickDelay.h"

//int Freq=9000;//频率8K；
int number=10;
int Sure_Stop=0;
int Sure_Number=10;
int Direction=0;
 

int main(void)
{ 
 SystemInit();//不能删除，虽然RCC_Configuration函数中调用了，不知道为什么 
 
 
 Motor_Init();
 KEY_Init();
 LED_Init();
 SysTick_Initaize();
 Speed(8000,5*Sure_Number);
 LED1_0;
 LED2_0;
 LED3_0;
 LED4_0;
    while (1)
    {  
   switch(KEY_Scan())
   {
    case 1:
    LED1_1;
    if(Sure_Stop==0)
    {
      Sure_Stop=1;
    }
    else
    {
      Sure_Stop=0;
      number=10;
            Sure_Number=10;
            Direction=0;
    }
    break;
  case 2:
       LED2_1;
       if(number<20)
    {
      number++;
    }
    else
    {
      Sure_Stop=0;
    }
    break;
  case 3:
             LED3_1;
       if(number>0)
    {
      number--;
    }  
    else
    {
      Sure_Stop=0;
    } 
    break;
  case 4:
       LED4_1;
       if(Direction==1)
    {
      Direction=0;
    }
    else
    {
      Direction=1;
    }
    break;
     default:
       break;      
   }
 
   if(Sure_Stop==0)
   {
  Motor_Stop();
   }
   if(Sure_Stop==1)
   {
  Sure_Number=number;
  Speed(8000,5*Sure_Number);
  if((Direction==0))
  {
    Motor_Forward();
  }
  else
  {
    Motor_Back();
  }
   }
   delay_ms(10);
 }
      
}

#ifdef  USE_FULL_ASSERT

void assert_failed(uint8_t* file, uint32_t line)
{
   

   
    while (1)
    {
    }
}
#endif