setnvic.c

51单片机的内存优化和中断的有用知识

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description    : Configure the nested vectored interrupt controller.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/


#include <stm32f10x_lib.h>              /* STM32F10x Library Definitions      */
NVIC_InitTypeDef NVIC_InitStructure;
void SetupNVIC(void);
void SetupNVIC(void)
 {
/* Configure one bit for preemption priority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  
  /* Enable the RTC Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

 }