USART fails in EXTI Interrupt

I have faced another strange thing today: inside ISR of EXTI I wanted to send some character to USART, but I found that program halts there, after eliminating the commands regarding USART I found that...
USART fails in EXTI Interrupt

I have faced another strange thing today: inside ISR of EXTI I wanted to send some character to USART, but I found that program halts there, after eliminating the commands regarding USART I found that...
EXTI interrupt handler not trigger for stm32f446re

Hi, i'm newbie , i want to know why my code doesn't work , my coding is about external interrupt is not trigger EXTIx_IRQHandler not trigger for coding in the uvision5 , but the same code i'm done...
EXTI interrupt handler not trigger for stm32f446re

Hi, i'm newbie , i want to know why my code doesn't work , my coding is about external interrupt is not trigger EXTIx_IRQHandler not trigger for coding in the uvision5 , but the same code i'm done...
how to detect rising edge without EXTI stm32f429

hi to all i do a project with st32f429 which calculate the time and when i press on the button PA0 it stop calculte and print the result on the lcd of stm32f429 , i do this project with EXTI but the...