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Unable to upload Sketch via Ethernet.

Posted: Mon Sep 01, 2014 3:44 pm
by rcurry01
Unable to upload Sketch via Ethernet.
I get the following error:
C:\Users\Carroll>tftp -i 192.168.1.4 put BlinkUploadTest.bin
Timeout occurred
Connect request failed

I have burned the “TFTP Bootloader ATmega328 (No Upload)” into my Rev3 Arduino UNO board.
I have a Vilros Ethernet R3 for Arduino Shield.
I am able to ping the Ethernet Shield so I know I have a valid communication link.
I have tried pressing the reset just prior to launching the DOS TFTP command and also tried pressing the reset just after launching the DOS TFTP command.

Any help would be appreciated.

Re: Unable to upload Sketch via Ethernet.

Posted: Thu Jul 14, 2016 12:46 am
by mcmenon
I am having the same error. Trying to follow this process:

http://www.freetronics.com.au/pages/how ... 4be_JMrLBI

Earlier, I noticed that pin 9 led was not flashing when the bootloader was supposedly burned. I'm not sure if this means the bootloader never burned. However, I was able to write network settings and ping the Arduino, so I think actually the bootloader might be working.

However, tftp is giving me 'connect request failed'

Any help is appreciated!

Re: Unable to upload Sketch via Ethernet.

Posted: Thu Jul 14, 2016 2:44 am
by mcmenon
Found my error: windows firewall was blocking tftp. Added an exception for this and it's working.