About kuchx

kuchx · 2021-10-21

Hello,So we are building a ball shooting robot which self detects the speed the ball was launched. The average speed is in range of 80mph. To get speed we are using two light gates, one on PF9 and one on PF10. So I set up EXTI interrupts on these two...

kuchx · 2021-10-26

Thanks for your help TDK and JWAdded a hardware low pass filter as well as software debounce and interrupt qualifying logic and everything seems to work fine!

kuchx · 2021-10-22

Thanks for you replay!About the debounce - I dont think that it might be the case because we recently migrated from Atmega 256 to STM32 and previously Atmega had basically the same logic I'm trying to implement here without any hardware nor software ...

kuchx · 2021-10-22

> The "edges" are quite likely bouncy.That's why I'm using some basic flag logic to register timestamp of the first edge. > .. or, better, qualify the interrupt source.Will try to implement this, thanks

kuchx · 2021-10-21

> How are you determining this?So I connected digital logic analyzer to light gate signals and then I checked the delta time between interrupts reported by MCU and compared it with the waveform. The time between two signal falling and rising edge was...

User statistics

User Activity

STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?

Re: STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?

Re: STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?

Re: STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?

Re: STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?