Upload sketch problem

[cricchetto06]

Hi guy, i've the problem when i try to upload a big sketch. I've try to upload a sketch with 28796 bytes of size and fail with this error: "avrdude: stk500_recv(): programmer is not responding". With a little sketch, i've no problem to upload it! Below some information about my Arduino and ide:
Board Model: Uno + Ethernet Shield
Ide version: 1.0
OS: Mac os X 10.6.8 (snow leopard)

Could be a bootloader problem? Some time ago I remember reading something about a bug with some bootloader version.

[nickgammon]

Sounds possible. Try using the IDE to re-burn the bootloader. I think you may need another bit of hardware, like another Arduino (as ISP) or a USBtinyISP or similar. Of course, you can also use one of those to simply burn the sketch without using the bootloader.

[el_supremo]

You could have run out of SRAM. Do you have a lot of strings and/or data arrays?

Pete

[cricchetto06]

uhm........out of SRAM...it's possible, but i've tried to upload in windows 7 with ide 1.0 and no error found!!!! But now the problem is.....SRAM overflow  6K of flash to inizialize EthernetServer class. My Arduino Uno is is at the limit   

[nickgammon]

Have you put your strings into program memory (flash memory)? Under 1.0 of the IDE there is a "F" macro to do that.

eg.

Code: [Select]

F("foo")

[cricchetto06]

All strings are into memory flash. Can i paste here all the line of my sketch?

[nickgammon]

I doubt it is a string issue if you can't upload. Try to put a more recent bootloader on the board.