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30 lines
3.1 KiB
HTML
30 lines
3.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Strict//EN">
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<html><head>
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<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
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<meta http-equiv="Content-Language" content="en-us"><title>Installing eLua on STR9 CPUs</title>
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<link rel="stylesheet" type="text/css" href="../style.css"></head>
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<body style="background-color: rgb(255, 255, 255);">
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<h3>Installing <b>eLua</b> on the STR9 CPU family from ST</h3>
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<p>Among the ARM based MCUs available today, the <a target="_blank" href="http://www.st.com/mcu/inchtml-pages-str9.html">STR9</a> CPUs from <a target="_blank" href="http://www.st.com">ST</a> stand up because of a few unique features.
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First, their core is an ARM966-E, as opposed to the very popular ARM7TDMI core. This, together with some cleverly chosen on-chip hardware blocks, allows the CPU to run at 96MHz, which is very fast for a
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general purpose MCU. The particular CPU I'm using (STR912FAW44) ) also has 512k of flash (and another bank of 32k flash) and 96k of internal RAM, so you won't be running out of memory anytime soon. It is accompanied by a very good support library,
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and ST provides a lot of nice tools for STR9, including a graphical tool that you can use to configure the chip exactly how you want. When I wrote to ST about <b>eLua</b>, they
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agreed to send me a <a target="_blank" href="http://www.hitex.com/str9-comstick/">STR9-comStick</a> board to run <b>eLua</b> on it. Thank you very much for your help, once again. This is the board that I'm going to
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use through this tutorial.</p>
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<h3>Prerequisites</h3>
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<p>Before you'll be able to use <b>eLua</b> on the STR912FAW44 CPU, make sure that:</p>
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<ul>
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<li>you're using Linux, Windows, or any other OS that has support for <a target="_blank" href="http://openocd.berlios.de/web/">OpenOCD</a>. You might have a look at my <a href="tut_openocd.html">OpenOCD tutorial</a> before continuing.</li>
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<li>if you're on Windows, you have installed the STR9-comStick support package from the accompanying CD.</li>
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<li>you already have your <b>eLua</b> image for the STR912FAW44 CPU (<a href="building.html">built</a> or <a href="downloads.html">downloaded</a>).</li>
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</ul>
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<h3>Burning <b>eLua</b> to the STR9-comStick</h3>
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<p>You need OpenOCD to do this. Just follow the instructions from my <a href="tut_openocd.html">OpenOCD tutorial </a>. On the tutorial page you'll also find links to the OpenOCD
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configuration files that I'm using for burning <b>eLua</b> to the comstick.</p>
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<p><b>IMPORTANT NOTE</b>: for some very strage reasons (probably related to the on-board USB to JTAG converter) my comstick does NOT start to execute the code from its internal flash after being
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powered up via the USB cable (faulty reset sequence?). To overcome this, you'll find a special OpenOCD configuration file on my <a href="tut_openocd.html">OpenOCD tutorial</a> page. It is called <i>comrst.cfg</i>,
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and you can use it to reset your comstick after it is powered up.</p>
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<p>That's it! <b>eLua</b> is now programmed in the CPU, so you can start your terminal emulator and enjoy it, as described in <a href="using.html">using eLua</a>.
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</p>
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</body></html>
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