[En-Nut-Discussion] PORT E (Ethernut 1.3)

[Pete Allison]

I use the following:

sbi(PORTE,X)/cbi(PORTE,X) where X is the bit number, to set and clear the
signal.

Example: 

sbi(PORTE,6);

I use this technique for all I/Os I'm controlling, specifically in PORTS B &
D.

I've tried to set the appropriate DDRE bits to make 2,3,4,6 and 7 outputs,
leaving 0,1, and 5 alone.

I can toggle 4, 6 and 7 without problems. I cannot toggle 2 and 3 the same
way.

I'll check my setup code again.

Thanks, Pete Allison (Rogers Telecom Products)

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Harald Kipp
Sent: Tuesday, September 08, 2009 10:51 AM
To: Ethernut User Chat (English)
Cc: WROG1304 at aol.com
Subject: Re: [En-Nut-Discussion] PORT E (Ethernut 1.3)

Pete Allison wrote:

> If I have 2,3,4,6 and 7, that is sufficient. Is there any special setup I
> have to do for 2,3, or 4?

PE2, PE3 and PE4 are directly connected to the expansion port.

Hardware: Do to mechanical stress, the vias may be broken. Try to
measure the result directly at the CPU pins.

Software: You enabled any special peripheral on these pins? You used the
right I/O call with the right bit/mask?
sbi(PORTE, PE4),
but outr(inr(PORTE), _BV(PE4));

Try something simple like
http://www.ethernut.de/nutwiki/Blinking_LED
first.

Harald
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