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Problem with STM32F746 : EXTI15_10_IRQ is constantly fired

juozas
Associate III
Posted on March 29, 2018 at 13:55

Hi, today I have observed and solved a problem when I started to develop my simple program for NUCLEO-F746ZG. A problem  was following: EXTI15_10_IRQHandler interrupt fired always - regardless of my changes in program. By observing system register SYSCFG content in my debugger, I have found, that content of SYSCFG always is zero, regardless of executing of the line LL_SYSCFG_SetEXTISource(LL_SYSCFG_EXTI_PORTC, LL_SYSCFG_EXTI_LINE13);

My code was generated by newest CubeMX with my selection USE_FULL_LL_DRIVER (without Ethernet and without USB support) and manually ported to Embitz. I have found solution - to add a line LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);

Interestingly - why CubeMX do not add this line!

Best regards.

2 REPLIES 2
Imen.D
ST Employee
Posted on March 30, 2018 at 11:47

Hello

Kimtys.Juozas

Thank you for reported this issue.

This issue is raised internally for check and investigation.

Best Regards,

Imen

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen
Nawres GHARBI
ST Employee
Posted on May 03, 2018 at 16:05

Hi

Kimtys.Juozas

‌,

This issue will be fixed next release 4.0 of MX.

enjoy using MX