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2006-08-14 by Erich Ludwig
I would like to sell a board with an Atmega128 and my customer should not be able to read and program my software updates. I myself want to program and update that chip whenever I want. Any ideas? Thanks Eric [Non-text portions of this message have been removed]
2006-08-14 by Bruce Parham
That is what the protect bits are for... Bruce Erich Ludwig wrote:
> I would like to sell a board with an Atmega128 and my customer should not be able to read and program my software updates. I myself want to program and update that chip whenever I want. > Any ideas? > > Thanks > > Eric > > [Non-text portions of this message have been removed] > > > > > Yahoo! Groups Links > > > > > > > >
2006-08-14 by John Samperi
At 04:30 AM 15/08/2006, you wrote: >my customer should not be able to read and program my software updates Don't give out the update file to your customer. Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-6495 Fax (02) 9674-8745 Email: john@ampertronics.com.au Website http://www.ampertronics.com.au *Electronic Design * Custom Products * Contract Assembly ********************************************************
2006-08-14 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, Ralph Hilton <ralph@...> wrote: > Use an encrypted bootloader. Atmel has two application notes on this topic. See AVR230 and AVR231. You should be able to find the by Googling for those designators. Don Kinzer ZBasic Microcontrollers http://www.zbasic.net
2006-08-14 by Ralph Hilton
On Mon, 14 Aug 2006 20:30:07 +0200 you wrote: >I would like to sell a board with an Atmega128 and my customer should not be able to read and program my software updates. I myself want to program and update that chip whenever I want. >Any ideas? > >Thanks > >Eric Use an encrypted bootloader. The update files are encrypted. The bootloader containing the decryption key is protected by fuses and cannot be read. -- Ralph Hilton http://www.ralphhilton.org C-Meter: http://www.cmeter.org FZAOINT http://www.fzaoint.net