SW_PWR

[charlespax]

How should PA0 be configured? When putting the processor to sleep it should act to wake up the system. During normal operation it should be an input.

[protological]

Why not attach the PWR button to an EXTI interrupt. If SW_C is moved to EXTI1 could the PWR be EXTI 4? (or vice-versa) External interrupts should be able to wake the processor.

[charlespax]

When the unit is put into standby PA0 would be configured as SYS_WKUP because that is the only pin that will wake the device from that state. During normal operation, however, I think it can be configured however you need. SP_PWR should stay on PA0 though I'm not sure if we will actually utilize the standby function.

I posted this issue mainly to ask how the ioc file should be configured, which is your domain. I imagine it should be configured to whatever that pin will be during normal operation, which would be EXTI0.

[charlespax]

PA0 is configured as GPIO_EXTI0 in the v0.4 .ioc file