更改距离设置格式

zhyinch

2018-10-01 96ca4b1952c1c4bf85704208f53c97b45a875b04

 源码/核心板/Src/OnChipDevices/Rcc_Nvic_Systick.c

@@ -48,25 +48,52 @@
   NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
   
   /* Enable and set EXTI Interrupt to the lowest priority */
    NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannel = DECAIRQ_EXTI_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

	
	
      NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelCmd =ENABLE;
	
    NVIC_Init(&NVIC_InitStructure);
}

int Systick_Init(void)
{
   int time_retry = 500;
   if (SysTick_Config(64000))
   if (SysTick_Config(72000))
   {
        /* Capture error */
        while (time_retry--);
      return 1;
    }
    NVIC_SetPriority (SysTick_IRQn, 5);
    NVIC_SetPriority(SysTick_IRQn, 5);

    return 0;
   
}

void delay_us(uint32_t nTimer)  
{  
    uint32_t i=0;  
    for(i=0;i<nTimer;i++){  
        __NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();
      __NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();
      __NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();  
        __NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();
      __NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();
      __NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();__NOP();  
        __NOP();__NOP();__NOP();__NOP(); 
    }  
}

void delay_ms(uint32_t nTimer)  
{  
    uint32_t i=1000*nTimer;  
    delay_us(i);  
}