[Coco] My New ATXMEGA128A3U Study Board Arrived

[Mark Marlette]

So your m328 is a USB device to the DMX512 host?

Or are you on the receiver side with the m328?


Mark


________________________________
 From: "jdaggett at gate.net" <jdaggett at gate.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Thursday, February 21, 2013 9:18 AM
Subject: Re: [Coco] My New ATXMEGA128A3U Study Board Arrived
 
I have  USB to DMX board that transmits the DMX512

I also have receiver boards with dmmmers.

james

On 21 Feb 2013 at 7:03, Mark Marlette wrote:

> james,
> 
> Is your mega328 the host, slave or both? Does it have the whole interface in it or just the smarts which sends the commands to the host / slave????
> 
> If you send the commands to the host /slave, send / receiver platform, who's are you using?
> 
> Thanks!
> 
> Mark
> 
> 
> ________________________________
>  From: "jdaggett at gate.net" <jdaggett at gate.net>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
> Sent: Thursday, February 21, 2013 8:29 AM
> Subject: Re: [Coco] My New ATXMEGA128A3U Study Board Arrived
>  
> 
> Kip
> 
> Not a bad price. 
> 
> If you are not familiar with Atmel RISC assembly and are familiar with 6809 assembly then 
> you will find a few quirks with the ATMEL part. 
> 
> Assembly for the ATmel RISC processors is not difficult to learn with some assembly 
> background. It is that coming from the 6809 which is a CISC processor to the AVRs, a RISC 
> Processor, there is some getting used to. With the AVR you now have 32 8 bit registers. All 
> can be used for just about what ever you want. The first 16 registers are handled a little 
> different than the last 16 registers. R26 through R31 can be used for 3 16 bit pointer 
> registers. 
> 
> I strongly recommend that you also study the instruction set guide. It is available via the help 
> menu or via a PDF download or with the software CD. You may need a ISP progrmamer like 
> the AVRMKII. This is in case the bootloader, if the board has one, is accidentally erased. 
> 
> The instruction set is kind of similar to the HC11 but not. There are instructions that act only 
> on the upper 16 registers and not the lower 16 registers. I guess the saving grace is the MOV 
> and MOVW instructions. This allows register to register copying. I say copy because unlike 
> the instruction would indicate, it does not move a register. It copies from source to destination 
> register. 
> 
> Once you learn the little quirks of the AVR, it is not a bad microcontroller. I use them for my 
> Christmas Lighting. I use the ATMega328 version. AVR studio is straight forward use IDE 
> and with the AVR MKII ISP programer it is easy to get code loaded and running. 
> 
> Enjoy the world of AVR. There is a ton, and I mean a ton of code snippets for the AVR out 
> there from robotics to dedicated projects. I am using mine for DMX512 lighting control. 
> 
> james
> 
> 
> On 21 Feb 2013 at 6:50, Kip Koon wrote:
> 
> > Hi All,
> > 
> > I just received a new "ATXMEGA128A3U Study Board Version 1" as it is called.
> 
> > For $19 + shipping, I thought it was worth it, so much so that I bought 2 of
> > the Version 1s to see what I could accomplish in the area of communications
> > with each other and my 6809 computer plus also storage.
> > 
> > I didn't get Version 2 as it was $50.  I have never done any Atmel
> > development before, but a close friend of mine has developed several items
> > for various companies with earlier atmel microcontrollers and he's been
> > trying to get me to learn the atmel microcontroller as well.  What are your
> > thoughts?
> > 
> > Kip
> > 
> >  
> > 
> > 
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