stm32f030 獨立看門狗bsp

#include "bsp.h"
void bsp_init_iwdg(void)
{
        /* Enable write access to IWDG_PR and IWDG_RLR registers */
        IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);

        /* IWDG counter clock: LSI/64 */
        IWDG_SetPrescaler(IWDG_Prescaler_64);//64分頻 一個週期1.6ms   內部低速時鐘LSI---40KHz  40k/64 = 625hz   1000ms/625hz = 1.6ms

        IWDG_SetReload(800); //800*1.6=1280ms  1.28s復位一次

        /* Reload IWDG counter */
        IWDG_ReloadCounter();

        /* Enable IWDG (the LSI oscillator will be enabled by hardware) */
        IWDG_Enable();
}

void bsp_feed_dog(void)
{
  /* Reload IWDG counter */
    IWDG_ReloadCounter();  
}