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XMega News

XMega + USB

rh offline
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Subject: XMega News  -  Posted: 09.09.2011 - 14:15   -  
@all,

hier die neuesten XMega Infos in deutsch:
http://www.msc-ge.com/de/news/.../version/9
the latest XMega infos in english:
http://www.msc-ge.com/en/news/...?locale=en

Offensichtlich ist es so dass alle vorhandenen und neue XMegas die USB Hardware besitzen werden. :-)
Die Absicht von Atmel ist es scheinbar die U und non-U Versionen eine zeitlang parallel laufen zu lassen. Irgendwann wird es die non-U Versionen nicht mehr geben. Ist aber kein Beinbruch, da die U-Versionen absolut pin und funktions kompatibel sind.
Obviously all new XMega devices provide USB support :-)
It seems to be that Atmel runs both versions 'U' and non-'U' in parallel for a time. Lateron the non-U versions will be discarded and replaced by the U versions. But don't care, the U-version are completely pin and function compatible with their predecessors.

rolf
Cars don't buy cars -- Autos kaufen keine Autos.
Henry Ford
This post has been edited 1-times. Last edit: 09.09.2011 - 18:24 by rh.
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Subject: Re: XMega News  -  Posted: 12.09.2011 - 00:47   -  
USB XMEGAs seem to finally have ADC working without problems:
http://www.avrfreaks.net/index...p;t=109436
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rh offline
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Subject: Re: XMega News  -  Posted: 07.10.2011 - 15:30   -  
@all,

we have an XMega256A3U (with USB) working here. There is absolutely no problem in this chip. Fantastic. We get an USB speed of 1MByte/s with very low CPU load.

rolf
Cars don't buy cars -- Autos kaufen keine Autos.
Henry Ford
This post has been edited 1-times. Last edit: 07.10.2011 - 21:34 by rh.
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Subject: Re: XMega News  -  Posted: 08.10.2011 - 07:13   -  
Rolf,
So how is the rest of the development going?
SPI (Soft and hard), TWI (Soft and hard), Ethernet support, FAT16, RS485 network etc etc

Neil.
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rh offline
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Subject: Re: XMega News  -  Posted: 08.10.2011 - 16:55   -  
Hello Neil,

since a long time all these drivers are implemented. Take a look into the demo section of the AVRco implementation.
Still missing is USB (coming soon) and Bootloader support (coming after PDI debug support).

rolf
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Subject: Re: XMega News  -  Posted: 08.10.2011 - 23:36   -  
Rolf,
Last time I looked, I was looking at the Wizard and what I could select.
Just trying now and things like the serial ports aren't available, so I assumed the RS485 network and Lan Network were also un-operational.
The TWI interface is also greyed out.
There are also lot's of other areas that I use in a standard Mega128 etc that are greyed out in the wizard.
Neil.
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Gunter offline
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Subject: Re: XMega News  -  Posted: 09.10.2011 - 00:45   -  
Hi Neil,

Rolf is tonight no more available.
The Wizard must obviously wait until all the drivers are working.
So it's still necessary to copy (most of) the corresponding lines from the examples
to your source.

Gunter
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Subject: Re: XMega News  -  Posted: 09.10.2011 - 01:34   -  
Thanks Gunter,

Good night.

I'll go back to the weeding and mowing :(

Neil.
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rh offline
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Subject: Re: XMega News  -  Posted: 09.10.2011 - 15:53   -  
yes, Gunter is right.

There are some priorities how XMega support goes on:
XMega USB support (XMega U-types)
XMega PDI debugging, including ISP3 firmware updates
XMega Boot support
AppWizard XMega support

rolf
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rh offline
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Subject: Re: XMega News  -  Posted: 09.10.2011 - 16:36   -  
@all,

today I made some speed tests with an XMega128A1 using overclocking. Fantastic results !!!!
Code
           OSCtype = int32MHz,
           PLLmul  = 8,      // 64MHz !!!!!!!!!!!
           prescB  = 2,      // periph clockB 32MHz
           prescC  = 1,      // periph clockC 32MHz
           overdrive;        // allow overclocking

Of course I didn't test very much. But a small application runs without any problems.
Blinking LEDs, UART, ADC etc.

rolf
Cars don't buy cars -- Autos kaufen keine Autos.
Henry Ford
This post has been edited 1-times. Last edit: 09.10.2011 - 18:50 by rh.
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Subject: Re: XMega News  -  Posted: 09.10.2011 - 19:01   -  
Hello Rolf.
Quote by rh

@all,

today I made some speed tests with an XMega128A1 using overclocking. Fantastic results !!!!
Code
           OSCtype = int32MHz,
           PLLmul  = 8,      // 64MHz !!!!!!!!!!!
           prescB  = 2,      // periph clockB 32MHz
           prescC  = 1,      // periph clockC 32MHz
           overdrive;        // allow overclocking

Of course I didn't test very much. But a small application runs without any problems.
Blinking LEDs, UART, ADC etc.

rolf

I think it is an nice Way to boost a CPU. :D

Thorsten
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setzt nur das Budget, Zeit und der Entwickler! ( P V S - D E C K )
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rh offline
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Subject: Re: XMega News  -  Posted: 09.10.2011 - 19:18   -  
Hello Thorsten,

yes, overwelming. And the case temperature of the XMega stays at 5gradC above room temperature :devil:
Tomorrow we will test our new XMega USB driver with 64MHz. Its a very complex application. I'm curious about the results.

rolf
Cars don't buy cars -- Autos kaufen keine Autos.
Henry Ford
This post has been edited 2-times. Last edit: 09.10.2011 - 21:39 by rh.
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rh offline
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Subject: Re: XMega News  -  Posted: 11.10.2011 - 14:31   -  
XMega users,

more and better tests showed that the secure limit of the XMega128A1 max clock is about 40MHz.
The XMega256A3U runs with 64MHz without any problems !!!
It seems that the new U-devices are more shrinked and have faster flash ! :devil:

rolf
Cars don't buy cars -- Autos kaufen keine Autos.
Henry Ford
This post has been edited 3-times. Last edit: 11.10.2011 - 21:08 by rh.
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rh offline
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Subject: Re: XMega News  -  Posted: 12.10.2011 - 19:06   -  
@all,
there a two new PDFs from Atmel concerning the differences between the non-"U" devices and the "U"-devices. Some differences maybe less important for existing or future designs, some differences maybe essential.

So one should be careful when selecting an XMega. To avoid any bad surprises I suggest reading these PDFs carefully will help the choice. Better is to use the "U" devices for new designs only.
One argument can be the speed results above :love:

rolf
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This post has been edited 4-times. Last edit: 13.10.2011 - 17:41 by rh.
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rh offline
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Subject: Re: XMega News  -  Posted: 14.10.2011 - 20:26   -  
Please note:
-----------------
When XMega overclocking is used the supply voltage must be 3.3V...3.6V
The brownout level must be set to 2.6V...3.0Volt
The brownout values (fuses) differ somwhat between "U" and "non-U" devices.
Anyway, a proper setting of the brownout fuses is strongly recommended!

rolf
Cars don't buy cars -- Autos kaufen keine Autos.
Henry Ford
This post has been edited 3-times. Last edit: 16.10.2011 - 17:43 by rh.
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