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Thread: Use an USB-serial port converter

  1. #1
    Join Date
    Dec 2003
    Location
    Czech Republic
    Posts
    270

    Use an USB-serial port converter

    I have compiled sources for USB-serial converters - enjoy the attached file.
    Quickly tested with ATEN UC-232A (pl2303.o module):

    insmod usbserial.o
    insmod pl2303.o
    mknod /dev/ttyUSB0 c 188 0
    chmod 666 /dev/ttyUSB0
    Attached Files Attached Files

  2. #2
    Hi Technik,

    I have used your compiled modules with a PL2302 based usb-to-serial adapter. The modules are loaded without any errors and also the adapter was recognized correctly when plugged in (check by using dmesg). But when I am
    sending only a few characters to a connected modem the system stops and reboots due to the running watchdog.
    How you have checked the modules?
    Which firmware are you using?

  3. #3
    Join Date
    Dec 2003
    Location
    Czech Republic
    Posts
    270
    Quote Originally Posted by Dex
    Hi Technik,

    I have used your compiled modules with a PL2302 based usb-to-serial adapter. The modules are loaded without any errors and also the adapter was recognized correctly when plugged in (check by using dmesg). But when I am
    sending only a few characters to a connected modem the system stops and reboots due to the running watchdog.
    How you have checked the modules?
    Which firmware are you using?
    Yes I have tested it quickly with (a bit obsolete) 1.7.5.9-1 firmware. I did not encounter any router reboot and it seemed to be working (Hyperterminal versus microcom terminal, 9600-8-n-1).
    What is your free memory size?

    BTW the 2302 chip is quite different so perhaps it can't work with pl2303.o module at all. It looks strange to me that your chip was accepted by the driver...
    Compare the chips:
    http://www.prolific.com.tw/eng/Products.asp?ID=20
    http://www.prolific.com.tw/eng/Products.asp?ID=59
    Last edited by Technik; 13-07-2004 at 17:27.

  4. #4

    USB <> Serial converter

    Hello,

    does anybody get such a converter to work with wl500g ?
    I dont want to open the case.
    Does anybody have experience with profilic driver ?
    Maybe i missed some discussion in forum ?

    Thanks a lot.

    Regards,

    Gabriel

  5. #5
    See http://www.usbgear.com/
    It's on the mainpage!

    NOTE: Google string: USB Serial!!!!

  6. #6
    But i cannot find any information there wether this would work on the asus wl-500x. Besides, what do you want to use serial connections to the wl-500x for? Just enabling serial connections does not help much.

  7. #7

    I want to attach a microcontroller to serial port

    wl500g <-> USB - Serial RS232 <-> RS232 microcontroller with several status functions...

    A server program watches the microcontroller and sends udp broadcasts
    to internal net or wait for a TCP terminal connection (small daemon process).


    Regards Gabriel
    Last edited by Randale91; 25-09-2004 at 13:23.

  8. #8
    Join Date
    Aug 2004
    Location
    Germany
    Posts
    377
    Hi

    For general, it can work if the needet modules are compiled into the kernel what i cant tell you at the moment. I have a Belkin usb-rs232 device which is suported by linux at my pc, and also the usual cables with inbuild electronics (mostly the ftdi chip) are supported.

    What Mikrocontroller do you use ? AVR,Pic, Basic Stamp ??

    Greets
    My Stuff: WL-500g, Mapower H31x 10GB HD, Philips Webcam Vesta PRO, TerraTec Webcam PRO, USB Hub

  9. #9

    Type of microcontroller

    I want to use AVR, 90S2313 for simple solution, Mega series for more ports...

    Regards Gabriel

  10. #10
    Join Date
    Dec 2003
    Location
    Czech Republic
    Posts
    270
    Quote Originally Posted by Randale91
    Hello,

    does anybody get such a converter to work with wl500g ?
    I dont want to open the case.
    Does anybody have experience with profilic driver ?
    Maybe i missed some discussion in forum ?

    Thanks a lot.

    Regards,

    Gabriel
    FYI there's a Search function which works good...
    http://wl500g.info/showthread.php?t=608
    BTW pl = prolific

  11. #11
    Join Date
    Aug 2004
    Location
    Germany
    Posts
    377

    Belkin Works

    Hi

    Just for interrest, the Belkin Serial Adapters work also.
    But what to do next with them .
    Code:
    hub.c: new USB device 00:04.0-1, assigned address 2
    usb.c: USB device 2 (vend/prod 0x50d/0x103) is not claimed by any active driver.
    usb.c: registered new driver serial
    usbserial.c: USB Serial support registered for Generic
    usbserial.c: USB Serial Driver core v1.4
    usbserial.c: USB Serial support registered for Belkin / Peracom / GoHubs USB Serial Adapter
    usbserial.c: Belkin / Peracom / GoHubs USB Serial Adapter converter detected
    belkin_sa.c: bcdDevice: 0205, bfc: 1
    usbserial.c: Belkin / Peracom / GoHubs USB Serial Adapter converter now attached to ttyUSB0 (or usb/tts/0 for devfs)
    belkin_sa.c: USB Belkin Serial converter driver v1.2
    Greets
    My Stuff: WL-500g, Mapower H31x 10GB HD, Philips Webcam Vesta PRO, TerraTec Webcam PRO, USB Hub

  12. #12
    Join Date
    Dec 2004
    Location
    NL CheeseCity (Gouda)
    Posts
    11

    Unhappy Other serial USB adaptor, same problem

    Hi,

    I also want to use an serial usb adaptor, other make (type DCU-S2U), works fine in other Linux or Windows machine, is recognised perfectly on boot-up,
    but after a few characters, same problem, locks-up and then leads to a reboot of the Asus.

    I have tried:
    - Changing the settings of the port with ssty (disable software and/of hardware handshake)
    - Using proper hardware handshake connections
    - Several firmwares for the ASUS
    - Adding proper end-of-line and end-of-file characters to the data

    Nothing works, looks like a bug in the firmware

    Anybody who has a clue??? I would be VERY gratefull if this problem could be solved.

    Regards,

    Peter

  13. #13

    USB serial port support....

    Hi,

    If it insert the usb to serial convert cable to WL-500g then there will be many useful apllication. Remote other device control and communictaion with RS232C... Unfortunatly, I don't know Linux system programming.
    I have only its idea.

  14. #14
    Join Date
    Dec 2003
    Location
    Russian Federation
    Posts
    8,356
    Starting with 1.9.2.7-5 support for pl2303 and generic usb serial adapters was added to the firmware.

  15. #15

    Exclamation pl2303 usb > serial converter

    I have connected an usb to serial converter, ATEN UC-232A (pl2303.o module) to my asus 500g.
    Which port number should I use if I want to connect to the converter over a wireless tcp connection? I suppose
    that the IP is the same as the IP of the router?

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