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STM32F4Discovery, I2c vs Exti0

Question asked by DocCC on Nov 11, 2012
Latest reply on Nov 15, 2012 by DocCC
Is there an inherent reason why activating EXTI0 using PA0 would interfere with a previously functioning I2C1 transmission operation?  (Atollic TrueStudion Lite)
That is, I tried to add ext interrupt from previous project, to a newer one studying I2c.
The I2C functions(sends char to Arduino slave which sends to serial monitor for me) alone, but when I add the setup for the EXTI0(no build errors), the original I2C transmission stops.
When I comment out the EXTI0 configuration, the I2C resumes functioning.Also: when I comment out the I2C, then the external interrup works.