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Calculator Community => TI Calculators => General Calculator Help => Topic started by: kevkid on July 29, 2012, 02:51:32 am

Title: Reflash boot2 Via Arduino Uno?
Post by: kevkid on July 29, 2012, 02:51:32 am

Is this possible, I have been trying for a while but I continue to get the error: retrying. I am guessing that the calculator will not accept the boot2 from my computer when trying to send via Xmodem. I am using hyperterminal and it just gives me an error when I try to send the file, it never gets past 0 percent. I am not sure why it refuses to do this. I get to the poing where it says ready to Download boot2 then it will not accept the file it just retries until it reboots. Can anyone give advice?

Kevin Lopez

Title: Re: Reflash boot2 Via Arduino Uno?
Post by: critor on July 29, 2012, 12:06:57 pm

Is you board using the TTL standard, which is not 'really' RS232 ?  (different voltages)

Title: Re: Reflash boot2 Via Arduino Uno?
Post by: kevkid on July 30, 2012, 12:11:32 am

I am almost certain it does, I get console output from the calculator, but for some reason every time I try to upload the boot2 to the calculator, it fails and tries to retry sending the packet until it shuts down. Would the voltages matter if you get console output? It doesn't seem like it fried anything.

Kevin Lopez

Title: Re: Reflash boot2 Via Arduino Uno?
Post by: ExtendeD on July 30, 2012, 01:57:20 am

I couldn't use HyperTerminal, I had the same problem.
Did you try lrzsz ? http://hackspire.unsads.com/wiki/index.php/Hardware#RS232

Title: Re: Reflash boot2 Via Arduino Uno?
Post by: kevkid on August 01, 2012, 10:39:06 am

Thank you very much it worked, a little bit of a hassle to get it to transfer but all is well.

--Kevin Lopez