C55x5 Wake-up line

Jrvanho

Is there a way to read the current state of the Wake-up line for the C5505? I see in the RTCPMGT register I can configure the direction and output value, but I don't see a way of reading the current state.

Cheers!

over 14 years ago

0 Jrvanho over 14 years ago

Intellectual 730 points

Can anyone from TI shed some light on this?

Cheers!

0 Jrvanho over 14 years ago in reply to Jrvanho

Intellectual 730 points

Can I get some help with this?

Cheers!

0 Steve Tsang over 14 years ago in reply to Jrvanho

TI__Mastermind 23785 points

This might not answer your question. But if you can read this register to know the programmed direction and value, would it be enough to assume this is the current state of the pin?

regards.

0 Jrvanho over 14 years ago in reply to Steve Tsang

Intellectual 730 points

Steve,

If the pin is configured as an input, is there a way to know if it is high or low?

Cheers!

0 Steve Tsang over 14 years ago in reply to Jrvanho

TI__Mastermind 23785 points

The quick answer is no.

Further into the question is why you need to? Since the wake-up event causes by a pulse being applied to WAKEUP pin, I think a scope be more suitable to capture the pulse.

Regards.

0 Jrvanho over 14 years ago in reply to Steve Tsang

Intellectual 730 points

It seems the wakeup pin is edge triggered, it would be nice to know if the line was still set or not.

Cheers!

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C55x5 Wake-up line