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]

https://community.st.com/s/question/0D50X00009Xkf0MSAR/iwdg-waking-up-stm32-from-sleep-mode?t=1677657345127

what is exact command prompt to activate the IWDG_STDBY_FREEZE

[MMARI.1]

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]

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]

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.

[MMARI.1]

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

[Piranha]

https://community.st.com/s/question/0D53W00001bnh8dSAA/how-to-enter-standby-or-shutdown-mode-on-stm32