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[ARM] window watchdog in stm32f103

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dizgah

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hi every one
I'm trying to initial stm32f103rbt6's window watchdog with keil cmsis examples,
every thing is OK but in reverse direction,i mean it seems external interrupt & wwdg interrupt handlers are act instead of each others.
based on keil read me descriptions periodically it must update wwdg counter & blink leds except when i pulled down portb.9(then wwdg must reset mcu)
but know exti interrupt handler act normally & when i pulled down exti then wwdg handler act.
i am completely mixed up,hope to any body guide me,i attached my project in keil too
with best regards.
 

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