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[Reply #540 on:]

I sometimes think if the 1284p worth the time spent... It is a shit that Arduino doesn't officialy support the 1284p, the Atmega2560 it's fantastic, but not for learn as it is impossible (or at least for me) to solder on a PCB. And the 328 it's like a toy, i go over the 32Kb flash in no time.

[Reply #541 on:]

Maybe its the choice of programmers.
I've been using Atmel AVR ISP MKii for a while now to program '1284Ps, and I don't have any problems.
Everyone else seems to be struggling with everything but.

[Reply #542 on:]

Touch wood, I haven't run into any trouble yet with the '1284p. I'm using Sparkfun's Pocket Programmer (USBTinyISP compatible) to burn bootloaders.

Also, I've only used the TQFP version.

[Reply #543 on:]

Same die is used in the DIP or TQFP (or the leadless) package - programmer does not see a difference.

[Reply #544 on:]

Question CrossRoads,

Have you burned a 1284p bootloader with the Arduino IDE and the AVRISP MkII?

[Reply #545 on:]

That's how I do all mine now. Mostly because I had misplaced by FTDI Basic, and I got used to doing that way.
Burn the bootloader first to get the fuses set, then file:upoad using programmer to put a sketch in.

[Reply #546 on:]

Thanks for the info.  Mine was not the signature, it was a page write type error.  Once the bootloader installed, you could upload blink to the microcontroller, but if the sketch size got over ~25kb, it would choke with the page write error.

There was a bug with the Optiboot 4.0 if you tried to flash a sketch bigger than 30 kB. Starting with Optiboot 4.4 this problem has been solved.
I don't know if this is your case.

[Reply #547 on:]

Well well, problem solved. I used the connection diagram of wiring.co.org and I was able to burn the bootloader perfectly. Using an Arduino Uno as ICSP.
However I can not upload any skecht, obviously because the 1284p doesn't have USB!

If I buy the AVR ISP MkII I think this will be solved. But: Do I have to change something in the boards.txt in order to program from the IDE directly with the MKII, right?

[Reply #548 on:]

I just bootloaded another ATmega1284P-PU with the maniacbug bootloader, I used Arduino 1.0.1 and an USBasp. I never had any trouble bootloading 1284's. I've bootloaded the first 1284's I got with Arduino 0023 and used an Arduino as isp, now I'm using Arduino 1.0.1 and an USBasp. The first chips I received have the 1216 timestamp, the last ones I got have the 1226 timestamp. So not everyone is having trouble with these chips 

[Reply #549 on:]

Well well, problem solved. I used the connection diagram of wiring.co.org and I was able to burn the bootloader perfectly. Using an Arduino Uno as ICSP.
However I can not upload any skecht, obviously because the 1284p doesn't have USB!

If I buy the AVR ISP MkII I think this will be solved. But: Do I have to change something in the boards.txt in order to program from the IDE directly with the MKII, right?

Not with the current version of the IDE, you just have to have the proper board selected and proper programmer selected from the Tools menu, and then use the IDE's File menu option of 'upload using programmer'.

Lefty

[Reply #550 on:]

Well well, problem solved. I used the connection diagram of wiring.co.org and I was able to burn the bootloader perfectly. Using an Arduino Uno as ICSP.
However I can not upload any skecht, obviously because the 1284p doesn't have USB!

If I buy the AVR ISP MkII I think this will be solved. But: Do I have to change something in the boards.txt in order to program from the IDE directly with the MKII, right?

Not with the current version of the IDE, you just have to have the proper board selected and proper programmer selected from the Tools menu, and then use the IDE's File menu option of 'upload using programmer'.

Lefty

GREAT!!!!

[Reply #551 on:]

There was a bug with the Optiboot 4.0 if you tried to flash a sketch bigger than 30 kB. Starting with Optiboot 4.4 this problem has been solved.
I don't know if this is your case.

Nope.  It was Optiboot 4.5.

[Reply #552 on:]

There was a bug with the Optiboot 4.0 if you tried to flash a sketch bigger than 30 kB. Starting with Optiboot 4.4 this problem has been solved.
I don't know if this is your case.

Nope.  It was Optiboot 4.5.

Sorry but you're wrong 
The 30kB bug has been solved with Optiboot 4.4. It was the issue #380
http://arduino.cc/forum/index.php/topic,64105.0.html
http://code.google.com/p/arduino/issues/detail?id=380

[Reply #553 on:]

Sorry but you're wrong 
The 30kB bug has been solved with Optiboot 4.4. It was the issue #380
http://arduino.cc/forum/index.php/topic,64105.0.html
http://code.google.com/p/arduino/issues/detail?id=380

Sorry for the misunderstanding.  I meant that I have only tested 4.5 on the 1284p, not that the bug is on the new version 

Besides, I am up with 4.5 with a 16MHz resonator and when I get a chance I will try the cap/res filter technique again with external crystal.

[Reply #554 on:]

What about running the 1284p at 20Mhz? As far as I know if you change the value in the boards.txt the millis should work fine.
Can I have any other problems?