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RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

2010-09-22 by Tim Mitchell

----Original Message----

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From: AVR-Chat@yahoogroups.com
[mailto:AVR-Chat@yahoogroups.com] On Behalf Of Steve Hodge
Sent: 22 September 2010 15:26 To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

> Thanks.  Just wanted to make sure I needed to bring out a
> JTAG header on a 
> new design.  Steve

I think you misunderstood John's reply

You can do debugging over PDI, just not with the AVRISPmk2.
The Atmel JTAGmk2 can debug over PDI. (and JTAG, obviously). But you only need 2 pins for PDI.

-- 
Tim Mitchell

RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

2010-09-22 by Steve Hodge

Yes, I did misunderstand.  So I can plug the AVRISPmk2 into the header for
straight programming, or plug the JTAGmk2 into the same header for in-chip
debugging?  If so, are there any limitations on in-chip debugging via a PDI
2-pin header versus a separate JTAG 4-pin header?   Steve

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From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Tim Mitchell
Sent: Wednesday, September 22, 2010 7:53 AM
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

----Original Message----
From: AVR-Chat@yahoogroups.com <mailto:AVR-Chat%40yahoogroups.com> 
[mailto:AVR-Chat@yahoogroups.com <mailto:AVR-Chat%40yahoogroups.com> ] On
Behalf Of Steve Hodge
Sent: 22 September 2010 15:26 To: AVR-Chat@yahoogroups.com
<mailto:AVR-Chat%40yahoogroups.com> 
Subject: RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

> Thanks. Just wanted to make sure I needed to bring out a
> JTAG header on a 
> new design. Steve

I think you misunderstood John's reply

You can do debugging over PDI, just not with the AVRISPmk2.
The Atmel JTAGmk2 can debug over PDI. (and JTAG, obviously). But you only
need 2 pins for PDI.

[Non-text portions of this message have been removed]

RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

2010-09-22 by John Samperi

At 01:04 AM 23/09/2010, you wrote:
>So I can plug the AVRISPmk2 into the header for
>straight programming, or plug the JTAGmk2 into the same header for in-chip
>debugging?

ASS-U-MEing that you are using an Xmega which does
not have "traditional" ISP but uses PDI instead.


Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************

RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

2010-09-22 by Steve Hodge

I thought all Xmega's used PDI.   At any rate, yes I am, an Xmega128-A1.
Steve

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From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of John Samperi
Sent: Wednesday, September 22, 2010 2:06 PM
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

At 01:04 AM 23/09/2010, you wrote:
>So I can plug the AVRISPmk2 into the header for
>straight programming, or plug the JTAGmk2 into the same header for in-chip
>debugging?

ASS-U-MEing that you are using an Xmega which does
not have "traditional" ISP but uses PDI instead.

Regards

John Samperi

[Non-text portions of this message have been removed]

RE: [AVR-Chat] AVRISP2 for PDI in-chip debugging?

2010-09-22 by John Samperi

At 08:19 AM 23/09/2010, you wrote:
>I thought all Xmega's used PDI.

Correct, as well as JTAG. Not sure if JTAG is faster that
PDI but it may be.

Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************