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aamirali641989
aamirali641989
Associate III
June 21, 2013
Question

configuring interrupt in stm32f205

  • June 21, 2013
  • 1 reply
  • 466 views
Posted on June 21, 2013 at 11:13

Page 164 of RM0033 shows that EXTI0 can be used for Px[0], EXTI1-Px[1]... and so on only.

That means if I used PA0 pin as interrupt somewhere then I can used PB0, PC0... pins as interrupt source any more???
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    1 reply

    Amel NASRI
    Amel NASRI
    ST Technical Moderator
    June 25, 2013
    Posted on June 25, 2013 at 18:46

    Yes it is the case.

    Only 16 interrupts can be simultaneously used when the EXTI lines are connected to GPIO pins. In fact, an interrupt cannot be configured in PA1 & another one in PB1 for example at the same time.

    -Mayla-

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