Timeout problem : Mega 2560 and Windows

Development Tools IDE 1.x
1

Hello,
I've tried to upload a code on my Arduino Mega, as usual. But this time, after compiling, the code won't upload itself...
The error code is below ( i removed some of the timeout messages to shorten it)

"Taille binaire du croquis : 18 226 octets (d'un max de 258 048 octets)
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
avrdude: stk500v2_ReceiveMessage(): timeout
[...]
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
avrdude: stk500v2_ReceiveMessage(): timeout
[...]
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
avrdude: stk500v2_command(): failed miserably to execute command 0x13
avrdude: stk500v2_paged_write: write command failed
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout"

Any idea what the probleme is? thx

2

i tried on another sketch ; it works .

Is it possible the sketch is too "heavy"? It would surprise me since it's only about 18000bytes, and i thought the Mega had a far better capacity...

3

Could be the !!! problem, if your source hasthree ! anywhere the loader stops responding.

4

by source you mean the code? even if the compiler has already gone trough it?
i'll check that, thx

5

Yes the source code, it will compile but there is talk on the forum of a loader bug and thre !! causes the loader to stall.

Had it a while ago when I put out an error message on an LCD og CRASHED !!! this failed to upload so had to modify the string..

    1. Happy codoing
6

I get timeout messages if I have the board using the serial port at the same I try to upload the sketch.

7

Don't understan when you upload any code on board is stopped....

Board will not restart using Serial until restarted at end of upload..

8

Me again ; i've got no "!!!" in my code... But i've unplugged two leds and it works --' could it be because i ask too much power flow?

9

Possibly the USB current capacity is not brilliant, whaturrent limit are you using with th LED's its not the LED's its the limit Resistor that defines current flow..