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Title: USB TO RS232 WHAT I WANT Post by: a222k on October 23, 2008, 03:25:31 03:25 Hellow everyone,
I am new in this web i have chips pl2303 with this chip i was made card readers to read irdeto viacces with winxp it is working good but with linux it is not working good but ft232 from FTDI working well but in my location these chips not available i saw this topic http://www.recursion.jp/avrcdc/index.html this avr circut gives only RX and TX but i want RTS for reset the cards my mean RX,TX for data in out and RTS for reset please share information and help me i am using laptop no serial Title: Re: USB TO RS232 WHAT I WANT Post by: maddoc on October 23, 2008, 06:44:50 18:44 I do not know of any PIC or AVR projects that use other signals than RX and TX.
I can just say that I have a USB->serial convertor (factory made) with pl2303 and it works fine in linux. I had problems with FT232 instead... PL2303 worked for me on Mandriva 2008.0! The cable is called UC232A, made by Aten. Remember, in linux the port is ttyUSB ! Title: Re: USB TO RS232 WHAT I WANT Post by: a222k on October 24, 2008, 12:38:49 00:38 Thanks maddoc for responnce
I know in linux the port is ttyUSB i check pl2303 USB->serial cable still no work i am using ubuntu-8.04.1-server-i386 but with Ftdi 232 working good .I am thankfull to you and hope for more help my laptop detects ttyUSB0 drivers installed well but no luck Title: Re: USB TO RS232 WHAT I WANT Post by: bogdantk on October 24, 2008, 06:22:26 06:22 Hello
Check this http://www.ftdichip.com/Products/FT232R.htm Very simple to use, full modem control + user configurable optional I/O I did a couple of project with no problems. Drivers compatible with MS Windows XP, 2K, VISTA and with LINUX. All the best Title: Re: USB TO RS232 WHAT I WANT Post by: maddoc on October 24, 2008, 08:30:03 08:30 What is the output of lsusb with the prolific adapter plugged in?
The single problem I know from some prolific based adapters is that they sometimes loose the first byte when setting up communication for the first time, then they work ok. It it not advised to send/receive data by using "cp or cat /dev/ttyUSB0" Title: Re: USB TO RS232 WHAT I WANT Post by: a222k on October 27, 2008, 03:19:22 15:19 What is the output of lsusb with the prolific adapter plugged in? The single problem I know from some prolific based adapters is that they sometimes loose the first byte when setting up communication for the first time, then they work ok. It it not advised to send/receive data by using "cp or cat /dev/ttyUSB0" ls usb is Bus 001 Device 003: ID 0e0f:0002 Bus 001 Device 002: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port Bus 001 Device 001: ID 0000:0000 dmesg -c is s erial Driver core [ 55.187356] /build/buildd/linux-2.6.24/drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303 [ 55.187825] pl2303 1-1:1.0: pl2303 converter detected [ 55.189142] usb 1-1: pl2303 converter now attached to ttyUSB0 [ 55.189232] usbcore: registered new interface driver pl2303 [ 55.189262] /build/buildd/linux-2.6.24/drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver [ 62.333859] eth0: no IPv6 routers present no luck with ft232m from FTDI chip all ok but i have lot pl2303 serial cables Title: Re: USB TO RS232 WHAT I WANT Post by: maddoc on October 27, 2008, 09:12:22 21:12 Have you tried the prolific cable with the kernel that came with your linux distro? Or just on the kernel you've built?
Maybe you missed something in the kernel config... Title: Re: USB TO RS232 WHAT I WANT Post by: markhao on November 12, 2008, 05:20:35 17:20 how about CP2102 of silabs? AFAIK, there is a chip in silabs to convert USB to UART... hope that helps.
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