stm32正点原子学习笔记（29）独立看门狗实验

 iwdg.c

 1 #include"iwdg.h"
 2 
 3 void iwdg_init(uint8_t IWDG_Prescaler,uint16_t Reload)
 4 {
 5     IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
 6     IWDG_SetPrescaler(IWDG_Prescaler);
 7     IWDG_SetReload(Reload);
 8     IWDG_ReloadCounter();
 9     IWDG_Enable();
10     
11 }

iwdg.h

1 #ifndef __IWDG_H
2 #define __IWDG_H
3 
4 #include "stm32f10x.h"
5 
6 void iwdg_init(uint8_t IWDG_Prescaler,uint16_t Reload);
7 
8 
9 #endif

main.c

 1 #include "exti.h"
 2 #include "iwdg.h"
 3 
 4 
 5 int main(void)
 6 {
 7     delay_init();
 8     LedInit();
 9     Exti_Init();
10     iwdg_init(4,625);//1s，看门狗超时时间
11     LED0on;
12     delay_ms(200);
13     
14     while(1)
15     {
16         if(KEY0_PRES==KEY0_PRES)
17         {
18             IWDG_ReloadCounter();
19         }
20     }
21 }