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STM32F303RE: unwanted interrupt

Question asked by Wawrzyniak.Laurent on Sep 14, 2015
Latest reply on Sep 15, 2015 by Wawrzyniak.Laurent
I have an EXTI programmed on PortB line8 that works as expected when  a rising edge is found on GPIO_IN8.

Unfortunaltely sometimes, when I reset the GPIO_Pin15 of port B by doing  GPIOB->BRR  = GPIO_Pin_15  then the GPIO_IN8 is also affected generating an unwanted EXTI on line 8.
There are no shortcut between pin15 and pin8.

I noticed this happens when I modify the Trig mode of the timer 1 from SlaveMode_Gated to no slaved mode.
This timer1 is  used to trig ADC1.

I don't understand what's happen.
Any idea / suggestion to help to fix this issue ?

Regards







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