Re: USB->serial->USB adapter needed



On 2009-02-16, eljainc <eljainc@xxxxxxxxxxxxx> wrote:
Hello,

I am trying to send RS232 data from two notebooks that do not have
serial ports. I know there are USB to serial (RS232) adapters
available. These allow communications to occur through a virtual
serial port. Now, what I need is a USB to USB RS232 serial cable, that
allows serial transmissions to occur, but via USB connections.

Can someone please point me in the right direction?

that's either inpossible or trivially easy (try a null modem cable)

.



Relevant Pages

  • Re: Using USB instead of RS232 on embeded project
    ... >finding a laptop with two serial ports if that's what you need. ... PCMCIA or USB to RS232 exist and have existed for some time. ... >commercial and industrial applications, not hobbyist setups or VAR systems.) ... either due to burst communications or random connections ...
    (comp.arch.embedded)
  • Re: MSComm and USB to RS485 Converters (head hurting now, must have martini)
    ... a .dll that we then use in various test engineering applications ... RS232 to RS485 converters work fine but I am out of serial ports ... Make sure the USB device gets mapped in as a comport and operating ... To me it seems like a shot into their own foot because it stifles Excel VBA apps and thus Excel sales. ...
    (sci.electronics.design)
  • Re: [PATCH 09/12] i386/x86_64: EHCI usb debug port early printk support.
    ... With legacy free systems serial ports have stopped being an option ... can just cat to get the usb debug output. ... This lack of a good timeout looks to be the reason ehci_wait_for_port ...
    (Linux-Kernel)
  • Will USB serial ever be fixed?
    ... I have a general question on the status of USB to ... seems that ucom is broken and no one is fixing it. ... serial ports hang on a call to tcflush. ... like the FreeBSD developers don't care about ucom... ...
    (freebsd-questions)
  • [RFC][PATCH 0/2] x86_64 Early usb debug port support.
    ... With legacy free systems serial ports have stopped being an option ... to get early boot traces and other debug information out of a machine. ... EHCI USB controllers provide a relatively simple debug interface ... the wrong time you can completely confuse various EHCI controllers. ...
    (Linux-Kernel)