Iphone to RS232 connection?

Discussion in 'Jailbreaks and iOS Hacks' started by rammy, Feb 1, 2008.

  1. rammy macrumors member

    Dec 25, 2007
    Hi all,

    Does anyone know if you can use your iPhone to gain access to an RS232 serial connection?

    Having a Tera Term/Hyper Terminal/Putty type app' that could do this direct from the iPhone would be awesome!

  2. ExibiTT macrumors newbie

    Feb 26, 2009
    Hi !

    How do you wont to connect RS232 cable to iPhone?

    Sorry for my English, I'm Russian :)
  3. ppc750fx macrumors 65816

    Aug 20, 2008
    What do you need serial for?

    From what I recall, there's not any RS232 on the board, but I *think* there are JTAG pinouts. Dunno if that'll actually be useful for whatever you're after, but it might be a good start.
  4. rammy thread starter macrumors member

    Dec 25, 2007

    The access would be useful for local serial/console access onto Cisco switches, routers, Nokia firewalls, F5 Big IP's etc.

    Most modern laptops don't carry an onboard rs232 connection anymore (they were mainly used for external modem connections) so a USB convertor is used to fulfil this serial/console access requirement.
  5. ExibiTT macrumors newbie

    Feb 26, 2009

    And iPhone always turn ON :) Laptop is the lost time :)

    pin 11 - Serial GND (TTL)
    pin 12 - Serial TxD (TTL)
    pin 13 - Serial RxD (TTL)

    but rs232 have 9 pins...
  6. Deli2006 macrumors newbie

    Mar 12, 2009

    I searching for the same solution and I only need the
    three ports.


    This a the pin Layout for an NetApp Serial Cable, maybe
    also for Cisco Systems.

  7. Deli2006 macrumors newbie

    Mar 12, 2009

    I have not seen any application that can use serial connection.

    I think that maybe the use of serial connection is not intended by
    Apple. It is possible that we can't use.

  8. chrisionetworks, Nov 3, 2010
    Last edited: Nov 3, 2010

    chrisionetworks macrumors newbie

    Nov 3, 2010
    Super late to this conversation I know, but I have to add that you should NOT hook a regular RS232 serial device up to your iPhone's serial port directly! The iDevice serial port is a TTL port, and the voltages in regular serial will probably destroy your device if you do.

    You should use something like a MAX3232 chip to convert between the two, or buy a prebuilt cable with one installed in it. Use something like Minicom, and as was mentioned, change the device to /dev/tty.iap and it'll work fine.

    Google for 'iphone serial port' and you'll find plenty of results. I console into Cisco routers from my iPhone and iPad with one of these cables.
  9. wiggwire macrumors newbie

    Jan 26, 2011
  10. router-geek macrumors newbie

    Feb 9, 2011

    I did found this one - they even have the serial cable to RJ45 for the iPhone/iPad.

    see http://www.get-console.com/


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