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Duval JP
Joined: 22 Jun 2004
Posts: 1161
Location: France
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 Posted: Thu Oct 17, 2019 6:25 pm Post subject: barre code reader et FT232rl how to use ? |
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Hello to all of you
I would like to use a USB barcode reader with an arduino or an Atmega 1284
I have a sparkfun module FTDI basic with a FT232rl.
The barcode reader returns characters when I plug it directly into my PC so it works.
on the other hand when I connect it in 5v I don't see any variation on the TX line on the scope, even if the reader emits a beep
I would like to retrieve these codes from the AVR with the UART
I attach the schematic of the module
how do I connect the DTR and CTS pins?
I'd try to find the right baud rate.
many thanks to your help
JP  [/img]
(BASCOM-AVR version : 2.0.8.2 )
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pleasure to learn, to teach, to create |
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i.dobson
Joined: 05 Jan 2006
Posts: 1570
Location: Basel, Switzerland
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| Posted: Thu Oct 17, 2019 6:41 pm Post subject: |
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Hi JP,
I don't think that'll work. Your Barcode Reader is a USB slave device that Needs to connect to a USB Host (In you test your PC). The FT232rl is also a USB slave.
If you really want to do that you'll Need a USB Host on your PCB/Connected to the Atmel.
Maybe something like this might work http://www.hobbytronics.co.uk/usb-host/usb-host-board-v2, depending on what the Barcode Reader "tells windows" what it is (USB Flash Drive, USB Keyboard, USB Mouse etc.)
Regards
Ian Dobson
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Walking on water and writing software to specification is easy if they're frozen. |
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hgrueneis
Joined: 04 Apr 2009
Posts: 902
Location: A-4786 Brunnenthal
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| Posted: Thu Oct 17, 2019 10:27 pm Post subject: The season |
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Hi JP,
about a decade ago I used a barcode reader on a PC. But it plugged in with a split cable into the keyboard connection. So I think it might work with the AT-keyboard interface. Not sure, but you might research that.
I don't think rs232 works with it.
Best regards
Hubert |
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hgrueneis
Joined: 04 Apr 2009
Posts: 902
Location: A-4786 Brunnenthal
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| Posted: Thu Oct 17, 2019 10:38 pm Post subject: |
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Hi JP,
youtobe.com has a few connection examples for barcode readers.
Search for "barcode reader with microcontroller"
Regards Hubert |
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Duval JP
Joined: 22 Jun 2004
Posts: 1161
Location: France
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| Posted: Fri Oct 18, 2019 9:36 am Post subject: |
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Hi Hubert and Ian,
Thanks for your very fast answers.
I will ordered a module hobbytronic and I let you know the result
JP
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matjazs
Joined: 08 Nov 2016
Posts: 86
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