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ex4
Joined: 13 Jan 2006
Posts: 1062
Location: indonesia
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 Posted: Mon Apr 05, 2010 6:57 am Post subject: AVR Universal Bootloader Guide |
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hello,
just wanna share my test step using AVR Universal Bootloader from Shaoziyang(http://sites.google.com/site/shaoziyang/Home/avr/avr-universal-bootloadere). please have a look at the attachment
any question and suggestion is welcome
p.s. :
by the time i post this message, im still writing the guide, so be patient  |
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ex4
Joined: 13 Jan 2006
Posts: 1062
Location: indonesia
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| Posted: Mon Apr 05, 2010 8:37 am Post subject: |
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| ok, this is the quick guide |
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Antony(uk)
Joined: 26 Jun 2006
Posts: 275
Location: Devon UK
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| Posted: Mon Apr 05, 2010 9:24 am Post subject: |
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Hi EX4
That one nice bit of work.
Always struggled with doing this.
Thanks 
Regards Antony(UK) |
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ex4
Joined: 13 Jan 2006
Posts: 1062
Location: indonesia
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| Posted: Mon Apr 05, 2010 9:29 am Post subject: |
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wie, monsiur  |
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ex4
Joined: 13 Jan 2006
Posts: 1062
Location: indonesia
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| Posted: Tue Apr 06, 2010 2:31 am Post subject: |
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maxspeed:
I have few little questions, do you know what's the big difference between pc128 or 256 and aes encryption how more strong?
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not that much into encryption algorithm, but AES offer higher security level, even the NSA (National Security Agency) of USA once use it to encode the TOP SECRET documents. Read it here
http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
to decrypt AES 256bits key you need around 2^95 times using normal attack algorithm, which is very looooooooooongggggggggggggggg(once i tried using my laptop and just found 1byte key after process it for almost 3days, talk about wasting of time )
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Do we have to save the key manually (copy/paste) and put in a text file or we can use it from bootcfg.h for next time? (if you push green button he give you a wrong key.)
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no, you can save a bootcfg.h file using other name, maybe bootcfg_product1.h, bootcfg_product2.h. and if you want to load it again just rename it to bootcfg.h and load it again using import function in the Option menu. That will load you key and all the setting automatically(except the chip type if not mistaken). You can also entering the key manually from Auto Code Function button
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For your project tcpip very interesting, actually i try to finish the complete code for tcpip protocol (my boss need a device to communicate to syslog srv) and other fonctions, but same problem not enough time to do the job, could you do another job (rush) for me !
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what kind of syslog srv? you can telnet it and sniff the protocol(request+reply) using Wireshark (www.wireshark.org)
contact me at my yahoo messenger for quick reply,hehehe |
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maxspeed
Joined: 23 Sep 2005
Posts: 68
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| Posted: Wed Apr 07, 2010 3:14 am Post subject: |
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Hi ex4,
I try to contact you by yahoo but the time between you and me is like day and night ...
I used syslog with udp packet and wireshark, dhcp, dns, arp etc, if i can have time i will have the complete library of tcpip for enc28j60, the harware of the prototype is ready, now it's time for the software .... i dont like rfc but no choice to keep compatibility with the protocol and sniffer.
It's a hard job, but working fine with bascom and 328p, 128, 1280, xmega not available for bascom and crypto communication 3des / aes.
Your speed test working fine?
Tell me what is your utc ??? me EST (-5 i think? we add 1 hour last month)
Good day or night (for me it's time to bed) |
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ex4
Joined: 13 Jan 2006
Posts: 1062
Location: indonesia
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| Posted: Wed Apr 07, 2010 3:31 am Post subject: |
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| Quote: | | I try to contact you by yahoo but the time between you and me is like day and night ... |
yup, you're in french correct? GMT-5, wow, mine is GMT+7,hehehe
no problem, i'm usually online at 01.00 GMT - 09.00 GMT, and 11.00 GMT - 13.00 GMT (if no football match,hehehhe)
| Quote: | | I used syslog with udp packet and wireshark, dhcp, dns, arp etc, if i can have time i will have the complete library of tcpip for enc28j60, the harware of the prototype is ready, now it's time for the software .... i dont like rfc but no choice to keep compatibility with the protocol and sniffer. |
enc28j60, wow, thats seem rather old chip(CMIIW), but Mr Ben got nice tutorial on that chip here
http://members.home.nl/bzijlstra/software/examples/enc28j60.htm
use his tcp ip library, ask for his permission first,hehehe, to be polite
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It's a hard job, but working fine with bascom and 328p, 128, 1280, xmega not available for bascom and crypto communication 3des / aes.
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thats the learning curve, xmega is i think too overkill for this kind of purpose. here, using xmega is very rare. even ATMEGA128 is rarely used for big project. dunno about your place there
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Your speed test working fine? |
yup, i can measure the actual speed (upload and download) of my connection via the Easy TCP IP Board on the LCD. I make the board mac,ip,subnet,gateway, and any other variable configurable via 4x4keypad+16x2 character lcd. still coding on the keypad action. i make the keypad act like cell phone keypad since i need to enter the server hostname i want to contact with. jeez, talked about a bunch of writing. |
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