STMicroelectronics STM8 Manual page 69

GPIO_WriteReverse(GPIOD, GPIO_PIN_0);
delay_ms(40);
}
WWDG_setup();
while(TRUE)
{
if((GPIO_ReadInputPin(GPIOB, GPIO_PIN_7) == FALSE) || ((WWDG_GetCounter() > 0x60) &&
(WWDG_GetCounter() < 0x7F)))
{
}
GPIO_WriteReverse(GPIOD, GPIO_PIN_0);
delay_ms(20);
};
}
void clock_setup(void)
{
CLK_DeInit();
CLK_HSECmd(DISABLE);
CLK_LSICmd(DISABLE);
CLK_HSICmd(ENABLE);
while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE);
CLK_ClockSwitchCmd(ENABLE);
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV8);
CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV64);
CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI,
DISABLE, CLK_CURRENTCLOCKSTATE_ENABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, DISABLE);
CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER4, DISABLE);
}
void GPIO_setup(void)
{
GPIO_DeInit(GPIOB);
GPIO_Init(GPIOB, GPIO_PIN_7, GPIO_MODE_IN_PU_NO_IT);
GPIO_DeInit(GPIOD);
GPIO_Init(GPIOD, GPIO_PIN_0, GPIO_MODE_OUT_OD_HIZ_FAST);
}
void WWDG_setup(void)
{
WWDG_Init(0x7F, 0x60);
}
WWDG_SetCounter(0x7F);