AVR-Chat

Hello Tim,

 

I am using AVR. 

If one wants to shift to arm, what shall be the start point.

Arm7, Arm9 or new cortex.

 

Which make arm controllers are good as learning curve.

 

Thanks

 

Prashant

 

From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
Behalf Of Tim Mitchell
Sent: 05 January 2011 14:43
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] Re: Project status report and question ...

 

  

----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
wagnerj@proaxis.com <mailto:wagnerj%40proaxis.com>  Sent: 05 January
2011 00:15 To:
AVR-Chat@yahoogroups.com <mailto:AVR-Chat%40yahoogroups.com>  Subject:
Re: [AVR-Chat] Re:
Project status report and question ... 

> Agree, but....
> 
> I think this is an inherent limit due to JTAG debugging.
> You don't get 
> history information out of JTAG. You just get the current
> state at the 
> breakpoint. The "alternative" would be single-step
> operation, which would 
> hardly be "real-time", due to the less than speedy
> traffic on the JTAG 
> link.
> 

I know we discussed ARM-Cortex M3 vs. AVR mega when you were earlier in
this project, and Chuck decided that AVR mega was fine for what he was
doing. However, Cortex M3 can do this via JTAG as the processor has
built in hardware to do it - using with Rowley Crossworks you can get
real time procedure call stack, real time variable display, monitor the
ram and processor registers, and all sorts of goodies. 

Just for future reference!!

-- 
Tim Mitchell



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