USB support?

Go To Last Post
3 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi everyone...

I have an avrispmkII... are there any commandline utilities or any utilities to use USB to program an ATMEGA128? would avrdude work? I am not sure what my optiosn are... I want to distribute a quick and dirty way for customers to upgrade firmware thru laptops (mostly USB)

thanks

Jeff

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

The AT90US1287BKEY has a bootloader that uses the USB interface to load programs in using the free FLIP3 software. I don't think you want to send every customer a MKII for upgrading purposes.

You could also use one of the FTDI chips that converts USB to RS232 and use a bootloader that uses that as an interface

Pete

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Send them (or ask them to get) a simple $10 USB-RS232 converter and use a basic uart bootloader, of which there's lots of samples around. Just need to make sure you ship the chip with an DB9 connector and a max232 or equivalent level shifter on chip (or as an external module of some sort).

Clancy _________________ Step 1: RTFM Step 2: RTFF (Forums) Step 3: RTFG (Google) Step 4: Post