窗口看门狗问题

Q.Wang

#include "wdg.h"

#include "led.h"

void IWDG_Init(u8 prer,u16 rlr)

{

IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);

IWDG_SetPrescaler(prer);

IWDG_SetReload(rlr);

IWDG_ReloadCounter();

IWDG_Enable();

}

void IWDG_Feed()

{

IWDG_ReloadCounter();

}

u8 WWDG_CNT=0x7F;

void WWDG_Init(u8 tr,u8 wr,u32 fprer)

{

RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG,ENABLE);

WWDG_CNT&=tr;

WWDG_SetPrescaler(fprer);

WWDG_SetWindowValue(wr);

WWDG_Enable(WWDG_CNT);

WWDG_ClearFlag();

WWDG_NVIC_Init();

WWDG_EnableIT();

}

void WWDG_Set_Counter(u8 cnt)

{

WWDG_Enable(cnt);

}

void WWDG_NVIC_Init()

{

NVIC_InitTypeDef NVIC_InitStructure;

NVIC_InitStructure.NVIC_IRQChannel=WWDG_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;

NVIC_InitStructure.NVIC_IRQChannelSubPriority=3;

NVIC_Init(&NVIC_InitStructure);

}

void WWDG_IRQHandler()

{

WWDG_SetCounter(WWDG_CNT);

WWDG_ClearFlag();

LED1=!LED1;

}

#include "sys.h"

#include "led.h"

#include "delay.h"

#include "wdg.h"

int main()

{

delay_init();

NVIC_Configuration();

LED_Init();

LED0=0;

delay_ms(500);

WWDG_Init(0x7F,0x5F,WWDG_Prescaler_8);

LED0=1;

while(1);

}

}
为社么上面的程序，窗口看门狗还是会复位？使用JTAG调试时在中断函数中设置断点，却没有在断点处停止，应该是没有进入中断函数，请大神指教！

正点原子

请直接用我们例程测试.

hechao3225

程序没看出问题哦

Q.Wang

已发现问题，例程和教程中都少了一句话！NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;没有使能这个中断通道！