How to flash the "atmega328" with AVRDUDE?

Question

I have an external device using an ATmega328, not a ATmega328-P as used by the Arduino Uno.

Now I want to use AVRDUDE and an Arduino Uno to flash a hex file on this chip. Therefore I removed the ATmega that came with the Arduino and popped in the one without the "-P".

With the Arduino IDE, it doesn't work, so I tried AVRDUDE:

avrdude -c arduino -P com3 -p ATMEGA328 -b 19200 -U flash:r:sdint.hex:r

However, I'm doing something wrong here, because it does not work:

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
...

What commandline should I use to flash an Arduino Uno with an ATmega328?

Answer 1

This seems to be quite a common problem, and there are a number of problems, each with their own solution.

• Make sure you have selected the right chip
• Make sure you have selected the right serial port (when you unplug your board, it should disappear).
• Make sure you do not have anything plugged in to the tx & rx pins (usually 0 and 1).
• Make sure your Atmega chip has a bootloader on it
• Try another cable
• There may be a problem with your computer - try another computer
• If using another helps, try reinstalling the USB serial driver
• Try unplugging the Arduino board, holding down the reset switch, then plugging it in (still holding down reset); continue to hold down reset for about 5 seconds.
• make sure nothing else is trying to use your serial port
• Does your chip have a bootloader? Chips bought as part of an Arduino will, otherwise, it almost certainly doesn't, unless it specifically says (in the description of what you bought).

If it does not have a bootloader (or may not have a bootloader) you will need to set this up. You can either use the instructions here: https://www.arduino.cc/en/Tutorial/ArduinoToBreadboard (which I never got working) or you can use an ICSP like the http://www.freetronics.com.au/products/usbasp-icsp-programmer-for-avr-arduino#.VlIY_2xifXs (which is what I use) - works great. They can be had for a few dollars from China.