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Author Topic: ATMEGA 2560 programing  (Read 392 times)
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amitash
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« on: January 30, 2013, 02:48:06 pm »
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Hi,
I try to upload a sketch to a ATMEGA 2560 using the arduino IDE and get the following (after upload done....):

avrdude: verification error, first mismatch at byte 0x0634
         0x0e != 0x06
avrdude: verification error; content mismatch

What can it be?
Thanks
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James C4S
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« Reply #1 on: January 30, 2013, 08:17:15 pm »
 Bigger Bigger Smaller Smaller Reset Reset
How old is the board?

Do you have !!! anywhere in your code (other than comments)?
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amitash
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« Reply #2 on: January 31, 2013, 01:31:06 am »
 Bigger Bigger Smaller Smaller Reset Reset
The board is new (it is not an arduino board but I use the arduino IDE).
Yes I have some Exclamation marks in the code. Why?
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amitash
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« Reply #3 on: January 31, 2013, 01:33:21 am »
 Bigger Bigger Smaller Smaller Reset Reset
Another thing, some of the exclamation marks are for logic not calculation.
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Nick Gammon
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« Reply #4 on: January 31, 2013, 01:45:41 am »
 Bigger Bigger Smaller Smaller Reset Reset
Some bootloaders use !!! as an "escape" to go into command mode.
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amitash
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« Reply #5 on: January 31, 2013, 01:46:19 am »
 Bigger Bigger Smaller Smaller Reset Reset
Does it have to be 3 in a raw?
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Nick Gammon
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« Reply #6 on: January 31, 2013, 03:43:51 am »
 Bigger Bigger Smaller Smaller Reset Reset
Yes.
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