STM8L151x IWDG summary-EEWORLD

Collect

STM8L watchdog:

(1) Use the internal low-speed clock (LSI): 38K, and set the frequency division of 4-256, so the time can be set to 0.1ms-1724.63ms;

(2) IWDG_KR = 0XCC to enable, IWDG_KR = 0XAA to feed the watchdog, IWDG_KR = 0X55 to allow access to IWDG_PR (prescaler) and IWDG_RLR (watchdog initial value)

void IWDG_Init(void)

{

CLK_LSICmd(ENABLE);

while (CLK_GetFlagStatus(CLK_FLAG_LSIRDY) == RESET);

CLK_BEEPClockConfig(CLK_BEEPCLKSource_LSI);

CLK_PeripheralClockConfig(CLK_Peripheral_BEEP, ENABLE);

IWDG_Enable(); //Remember to enable first

IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);

IWDG_SetPrescaler(IWDG_Prescaler_256);

IWDG_SetReload((uint8_t)RELOAD_VALUE); //RELOAD_VALUE = 254 1.724s

IWDG_ReloadCounter();

}

The programs in the firmware library are:

IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);

IWDG_SetPrescaler(IWDG_Prescaler_256);

IWDG_SetReload((uint8_t)RELOAD_VALUE);

IWDG_ReloadCounter();

IWDG_Enable(); //Enable is placed at the end

I tried it this way, and the parameters given previously were useless. As long as it was enabled for about 27ms, it would bite people. There was a timer

Also, please note that many seniors said that dogs cannot be fed during interruptions, but must be fed during the normal program. If the program runs away, it is possible to run into an interruption. . . .

Keywords：STM8L151x IWDG interrupt Reference address：STM8L151x IWDG summary

Previous article：stm8 debugging hardware I2C experience
Next article：STM8L independent watchdog IWDG

Recommended ReadingLatest update time:2024-11-16 12:43

STM32 Study Notes---IWDG Independent Watchdog Experiment

After doing the WWDG window watchdog experiment, we continued with the 9th experiment - IWDG independent watchdog experiment. In this experiment, we set the window watchdog IWDG interrupt time to regularly check whether there is an error. In the SysTick_Handler interrupt function, a running light is added to test wheth

[Microcontroller]

STM32 Study Notes---IWDG Independent Watchdog Experiment

PIC32MZ tutorial -- Timer Interrupt

　　An interrupt is an internal or external event that requires quick attention from the controller. The PIC32MZ architecture provides a rich interrupt system that can manage up to 190 sources of interrupts. Each interrupt source can have a unique piece of code, called the Interrupt Service Routine (ISR) directly associ

[Microcontroller]

Popular Resources
Popular amplifiers