I just bought a new Mega 2560 R3 and a ethernet shield R3 , but when i’m trying to upload a program, i’m getting the rolling error :
avrdude: stk500v2_ReceiveMessage(): timeout
Without the shield connected the upload goes well. Also to tested the R3 shield on a previous version of the uno and it work also.
So it seem their is a compatibility issue between the mega and the ethernet shield ?
Have someone else notice this issue ?
when i disconect PIN 10 from the shield , i'm able to load the program. But of course the ethernet part of my program doesn't run.
Can my arduino mega have hardware issue ? Can i use an other pin for the chip select ?
That sounds like a hardware issue. Mine works fine. I can reprogram the 2560 with the shield connected.
Thanks for the input SurferTim
I did another test today , and i more an more confused.
here is what i did :
- load the ASCII table example program without the ethernet shield
=> Everything ok , upload and the serial output listed all the ascii code
- install the shield and reload the ascii table example program
=> still OK
note that when the ethernet cable is connected the both link and 100M led are blinking
- load my program for the ethernet shield (with the shield still connected)
=> upload was success full but at the of the upload the link and 100M led from the ethernet shied stop blinking
=> but the program (a simply took this example http://arduino.cc/en/Tutorial/WebServer ) did not run , serial console empty , and nothing on the internet browser
And after this no more able to load any other program without getting the stk500v2_ReceiveMessage(): timeout error message
Only way to come back is to unplug the shield and re program.
Seem there is a conflict between the serial and the ethereal shield ? look like the serial port is loss as soon as a program is using the ethernet shield ?
Note i did this test with 2 different ethernet shield R3 and R2 and both are failing , and on an other side both shield are working well with the same program, on a ardunio UNO rev2
If someone have some idea i would appreciate