USB_HUB_UART/APP/HARDWARE/sources/iwdg.c

#include "iwdg.h"
#include "stm32f2xx_iwdg.h"

void IWDG_Configuration(uint16_t ms)
{
    IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
		IWDG_SetPrescaler(IWDG_Prescaler_256);// 256 min:8ms  max:32768ms
		IWDG_SetReload(ms); // ms
		IWDG_Enable();
		
}
 
void IWDG_feed()
{
	IWDG_ReloadCounter(); // ms
}