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Misunderstanding in the RM0008 manual for STM32F103 at P212

Question asked by Klavs Rommedahl on Apr 17, 2018
Latest reply on Apr 18, 2018 by Klavs Rommedahl


  At page 212 in the manual RM0008 for the STM32F103 device, some part of the internal/software event is explained. Under the EXTI_PR it states, this bit is cleared by writing a "1"into the bit. But just above it says 1 = trigger occurred = bit is set ??? I am confused.

  I do follow the part of setting up pins and level detections, but set/reset part of SWIER and PR confuses a bit  ???