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38 lines
1.5 KiB
38 lines
1.5 KiB
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\documentclass[11pt]{article}
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%Gummi|065|=)
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\usepackage{graphicx}
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\usepackage{caption}
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\usepackage{xcolor}
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\usepackage[vcentering,dvips]{geometry}
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\geometry{papersize={6in,9in},total={4.5in,6.8in}}
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\title{\textbf{UserSpace IO via uLisp and Arduino Uno}}
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\author{Steak Electronics}
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\date{}
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\begin{document}
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\maketitle
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%\tableofcontents
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\textcolor{green!60!blue!70}{
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\section{UserSpace IO via uLisp and Arduino Uno}}
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Overview: Goal is to get an easy way to echo "command" > /dev/ARDUINO from GnuLinux userspace.
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Then I can 3D print a box, throw some LEDs in there, and get a hardware interface for anything from my distro.
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\subsection{Setup}
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First off, I installed the stable uLisp from ulisp.com (AVR version 3.4).
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\subsubsection{Trouble with interfacing directly to ttyACM0 / ttyUSB0}
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The Arduino Uno uses an FTDI USB to Serial chip. It also has more than just RX/TX connected (I think). This means that when you echo "something" to
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arduino, this command will open the serial connection, send the command, then close the command and possibly reset the board via one of the
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UART reset pins (DTS perhaps). This won't work. First thing to do, get an FTDI board, and connect it to the computer, the connect
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it to digital pins 0,1 (for UART). Then test sending a command. This works. This will be the final setup. Computer -> FTDI -> Arduino.
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It should be possible to get it to work without the FTDI chip, but not without some debugging. Have at it, if you wish.
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Ref:
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\end{document}
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