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Have a RIoTboard question?  Ask the expert, John McLellan

Former Member

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John McLellanJohn McLellan
John McLellan is a hardware hacker, maker, and embedded systems guy with more than 10 years semiconductor experience at Freescale.
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  • 1. I installed a 10inch LVDS NEC screen on the Riot, with Ubuntu, and it boot fine into the standard 'windows'. However I would like to use this with QT embedded and thus does not need a GUI, how does one boot in console mode, as the Ubuntu image is 'non-standard' and normal Googling solutions does no seem applicable.

     

    2. Where can I get a 'How to' to access the I/O on the Riot?

     

    Thanks in advance

  • in reply to Former Member

    how does one boot in console mode

    If you are using a linux machine:

    to get into console mode you need to have a serial cable, you can get  UART8000-UUART8000-U cable if you don't have one.

     

    next, you need to connect the UART RX,TX,GND exactly to J18 as shown here

    next, install a terminal program to access Riot as shown here

     

    If you accessing from windows pc check here

     

    access the I/O on the Riot

    I guess you are looking out for GPIO access methods.

    check this gpio thread here , it has a good discussion on how-to use GPIO on Riotboard.

  • in reply to tusharp

    Thanks for the quick reply, I do have a TTL 'RS232' connected and it works as a debug console, but the screen still boots in GUI, I am attempting to use QT with -qws without a windows manager, thus need to disable the GUI on bootup, and boot the LVDS screen in console mode.

     

    I will follow up on the GPIO, Thanks

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