Can PA13 and PC13 trigger the same EXTI line 13 interrupt?

[russ]

Posted on October 29, 2008 at 09:48

Can PA13 and PC13 trigger the same EXTI line 13 interrupt?

[tibo]

Posted on May 17, 2011 at 12:49

no, see RM0008 page 129, all GPIO's Px13 (x = A - G) are

connected to the same EXTI-Line, but only one GPIO is active at the same time.

[russ]

Posted on May 17, 2011 at 12:49

Can they?

[russ]

Posted on May 17, 2011 at 12:49

Can one PA13 trigger an event while PC13 triggers and interrupt to keep them separate?

[tibo]

Posted on May 17, 2011 at 12:49

no, because the mapping GPIO -> EXTI-line is

in front of the EXTI-Controller (RM0008, page 127+129: Figure 17 is in front of Figure 16).

[russ]

Posted on May 17, 2011 at 12:49

I can get the tamper pin to generate an interrupt when the processor is running, but not when it is asleep using:

''PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI)'' or ''PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFE)'' Is there a reason for this? Is it because I have VDD connected directly to VBAT?[ This message was edited by: russ1 on 28-10-2008 21:28 ]

[russ]

Posted on May 17, 2011 at 12:49

PC13 is the Tamper-RTC pin. Can I use this functionality to generate an event on it that will trigger the processor awake and retain the standard EXTI-interrupt functionality on PA13?

[tibo]

Posted on May 17, 2011 at 12:49

The Tamper function does not wake up from low power modes (RM0008, page 65).