ATmega8 based USB to Serial converter does not work.

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eRony
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#1
Posted by eRony: Sun. Apr 10, 2016 - 03:39 PM
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Hope many of AVR chip usager try it http://www.recursion.jp/prose/av...
I'm also try to make a ATmega8 based USB to Serial converter.

But many of times I'm failed to run it.

Problem is Virtual COM Port Could not be Open.

I'm attach my PC Screen shoot.

How to Fixed it?

Regards,

eRony

Attachment(s): 

Image icon be_in_Driver.PNG
Image icon af_in_Driver.PNG
Image icon cdc232-2313.png
Image icon Screenshot 2016-04-10 21.38.17.png

শূন্য  - The ZeRo

Tags:

AVR Microcontrollers, megaAVR and tinyAVR, ATmega8, Home Appliances
Last Edited: Sun. Apr 10, 2016 - 04:43 PM
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clawson
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Location: (using avr-gcc in) Finchingfield, Essex, England
Posted by clawson: Sun. Apr 10, 2016 - 04:45 PM
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As far as I can see both your device manager pictures show a yellow exclamation mark which suggests the driver has not installed correctly. 

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JohanEkdahl
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Posted by JohanEkdahl: Sun. Apr 10, 2016 - 05:50 PM
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Isn't it rather obvious that

 

i) when you tried to install the drivers it failed, and

ii) it failed because it's signature wasn't in good order

 

(I know, I'm just quoting what is in the message, but since the above posts does not seem to recognize even what the messages says...)

 

So, the driver still isn't installed.

 

What driver did you try to install? Where did you get it from?

 

Could it be that the driver is actually intended for other hardware than the one you have built? (E.g. for another USB-to-serial bridge, expecting a vendor id different from the one your device is reporting). Or that you got the driver from a "rogue" site and it has actually been altered to do malicious stuff?

 

What is your previous experience working with USB?

 

If you want help rather than speculations you'll likely need to show people here your code too. (Can we guess that it is a variant of e.g. V-USB?)

 

For the "hope many will try it", my guess (and advice) is to not build this but simply buy one of the ready-built devices, available for just a dollar or two. E.g.: http://www.ebay.com/itm/CP2102-U... , http://www.ebay.com/itm/CP2102-M... , http://www.ebay.com/itm/USB2-0-t... ... That was just a few links picked at random from this EBay search: http://www.ebay.com/sch/i.html?_...

As of January 15, 2018, Site fix-up work has begun! Now do your part and report any bugs or deficiencies here. 

No guarantees, but if we don't report problems they won't get much of  a chance to be fixed! Details/discussions at link given just above.

 

"Some questions have no answers."[C Baird] "There comes a point where the spoon-feeding has to stop and the independent thinking has to start." [C Lawson] "There are always ways to disagree, without being disagreeable."[E Weddington] "Words represent concepts. Use the wrong words, communicate the wrong concept." [J Morin] "Persistence only goes so far if you set yourself up for failure." [Kartman]

Last Edited: Sun. Apr 10, 2016 - 05:53 PM
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valusoft
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Posted by valusoft: Mon. Apr 11, 2016 - 03:48 AM
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That website "suggests" that their driver is for XP or Vista. Which version of Windows are you using?

 

What VID/PID pair are you using? Perhaps a driver for that pair was already installed for some other USB device and windows decided that it doesn't like your version.

 

extra: It might be helpful for you to try the usb utility at http://www.usblyzer.com/

 

Ross McKenzie ValuSoft Melbourne Australia

Last Edited: Mon. Apr 11, 2016 - 03:53 AM
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clawson
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Posted by clawson: Mon. Apr 11, 2016 - 10:45 AM
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valusoft wrote:
Which version of Windows are you using?
Looks a lot like Win7 in the picture.

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bobgardner
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Posted by bobgardner: Mon. Apr 11, 2016 - 04:49 PM
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Is it x32 or x64?

 

Imagecraft compiler user

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eRony
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Posted by eRony: Sat. Apr 16, 2016 - 11:39 AM
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I'm using Windows 7 Ultimate 64-bit OS.

Dear All,
I'm really strange!!!!!
Last 5 days ago i'm add a new comment.

But now i'm not find my last comment here!!!

শূন্য  - The ZeRo

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