nvic_configuration_win7configuration_configuration是什么

void NVIC_Configuration(void)

{

NVIC_InitTypeDef NVIC_InitStructure;

#ifdef VECT_TAB_RAM

/* Set the Vector Table base location at 0x20000000 */

NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);

#else /* VECT_TAB_FLASH */

/* Set the Vector Table base location at 0x08000000 */

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);

#endif

/* Enable the USART1 Interrupt */

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

/* Enable the USART2 Interrupt */

NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQChannel;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

#if 1 // add liuxd

/* Enable the USART3Interrupt */

NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQChannel; // USART3_IRQn; // USART3_IRQChannel;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

#endif

#if 0 // add liuxd

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3); //选择分组3 3bits抢占优先级

NVIC_InitStructure.NVIC_IRQChannel = SysTick_IRQChannel;// SysTick_IRQn;//中断号

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//抢占优先级

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能中断

NVIC_Init(&NVIC_InitStructure);

#endif

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