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Standby mode with I watchdog . i trying to use the watchdog with standby mode . before enter to standby mode i need activate the IWDG_STDBY_FREEZE

MMARI.1
Senior II
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5 REPLIES 5
MMARI.1
Senior II

hi. any one having experience on what i am facing .please share your example codes how to freeze the i watchdog before enter to standby mode ?

KnarfB
Super User

This setting is in the option bytes. STM32CubeProgrammer can be used to change it.

Details may depend on the chip series and chip.

hth

KnarfB

MMARI.1
Senior II

i have tested with stm32f103cx series and stm32f401ccu series . still i watch dog resetting the MCU in standby mode. any idea what is wrong in this.

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MMARI.1
Senior II

hi, stm32f401ccu6 datasheet saying that option byte is available to freeze the i-Watchdog . but surprise i-Watchdog is keep on resetting the MCU in standby mode . really where is exact mistake ? Hardware Watch dog or Software Watch dog i have to choose ? . currently i have unchecked box to choose the hardware i-watch dog . and checked box to choose the No reset nRST_STDBY