Help with the fuses
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As the fuses are created using an automated tool I am not so confident they are correct. This applies mainly to the default values.
If any errors or omissions are spotted, please post a correction here (don't just say it's wrong, please help by confirming what it should be.) All such corrections will be applied to an "Official fuse database" to be incorporated into the next version.
ATXMega fuse default values - I know these are wrong. Unfortunately I cannot find a suitable data source for them, or even where in the datasheet stack it says what they might be.
If anybody knows of a source for this information I would be delighted to hear of it.
Atxmega128a4u is missing fusebyte0.
default values should be:
fusebyte0 = 0x00 (jtag device adress)
fusebyte1 = 0x00
fusebyte2 = 0xFF
fusebyte4 = 0xFE
fusebyte5 - is not specified in documentation i'll have this chip tommorow.
Lockbits = 0xFF
Btw best AVRdude GUI i've ever seen.
Last edit: Zajc3w 2013-01-22
Thanks Zajc3w. This probably means all the following devices should have a fusebyte0 as well.
ATXMEGA128A4
ATXMEGA128A4U
ATXMEGA128C3
ATXMEGA128D4
ATXMEGA16A4U
ATXMEGA16C4
ATXMEGA192C3
ATXMEGA256C3
ATXMEGA32A4U
ATXMEGA32C4
ATXMEGA384C3
ATXMEGA384D3
ATXMEGA64A4
ATXMEGA64A4U
ATXMEGA64C3
ATXMEGA64D4
The converter went a bit rogue here. I will have to spend some time with the datasheets. I am back at work now so not much time for programming. If there is a device in this list you want to use now you can use the database editor to add a fusebyte0.
I would love to help You, but my windows coding skills are less than basic. And now i have to figure out how to program atxmega128a4u without buying avrispII.
Last edit: Zajc3w 2013-01-22
It's pretty easy to make a dedicated avrispII out of a mega8535 (or with some tweaking most any AVR with enough memory and I/O). You could bootstrap it with your avrisp. See Evertool http://www.siwawi.arubi.uni-kl.de/avr_projects/evertool/index.html for an example. I have built a bluetooth programmer based on the avrisp section of this project and can confirm it works perfectly, and can even be made to work in AVR studio 6. Mind you, I still prefer AVRdude :-)
The most useful and flexible (and easiest to build) programmer is probably a bog-standard Arduino. Check out http://arduino.cc/en/Tutorial/ArduinoISP
I have USBASP for ISP programming. I need something to progam Xmegas with PDI protocol/interface.
Last edit: Zajc3w 2013-01-23
So ISP will not work on Xmegas? I am not familiar with PDI. I think one can use JTAG on the Xmegas? If so then a jtagice workalike might be a good choice for a homebrew Xmega programmer.
Xmegas use new programming interface: PDI There is a patch for USBASP that apparently work with ATXmegas16d. and 64d.., but i ghad no luck. There is a Bug reported for AVRDUDE about subfamily A4U incompatibility. So i have 5 options:
1 Buy atmel's ISP mk2 ~26 GBP +VAT
2 Buy atmel's DRAGON ~37 GBP +VAT
3 write my own programmer
4 wait for new AVRDUDE (last update took 1.5 year).
5 go wild and buy AVRONE ~500 GBP +VAT ;P
JtagICE mk1(the one with atmega16) is useless with xmegas. BTW A4U subfamily has no JTAG interface(at least i can't find any jtag pins functions in datasheets) - tradeof for having USB??
Xmegas use new programming interface: PDI There is a patch for USBASP that apparently work with ATXmegas16d. and 64d.., but i ghad no luck. There is a Bug reported for AVRDUDE about subfamily A4U incompatibility. So i have 5 options:
1 Buy atmel's ISP mk2 ~26 GBP +VAT
2 Buy atmel's DRAGON ~37 GBP +VAT
3 write my own programmer
4 wait for new AVRDUDE (last update took 1.5 year).
5 go wild and buy AVRONE ~500 GBP +VAT ;P
JtagICE mk1(the one with atmega16) is useless with xmegas. BTW A4U subfamily has no JTAG interface(at least i can't find any jtag pins functions in datasheets) - tradeof for having USB??