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| author | Sadeep Madurange <sadeep@asciimx.com> | 2026-01-09 16:45:56 +0800 |
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| committer | Sadeep Madurange <sadeep@asciimx.com> | 2026-01-09 16:45:56 +0800 |
| commit | a851a2d646f439f7126c232ba1524c55a8990872 (patch) | |
| tree | 0d8870fae739b72e37fc3ce1a672388ce7592a9c /_site/log/arduino-due/index.html | |
| parent | 3b0f6bd6879d8a32d89dcccc739a73e0e9e823a7 (diff) | |
| download | www-a851a2d646f439f7126c232ba1524c55a8990872.tar.gz | |
Remove _site from git.
Diffstat (limited to '_site/log/arduino-due/index.html')
| -rw-r--r-- | _site/log/arduino-due/index.html | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/_site/log/arduino-due/index.html b/_site/log/arduino-due/index.html deleted file mode 100644 index ed49e78..0000000 --- a/_site/log/arduino-due/index.html +++ /dev/null @@ -1,114 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>ATSAM3X8E bare-metal notes</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">ATSAM3X8E BARE-METAL NOTES</h2> - <h5 class="center">16 SEPTEMBER 2024</h5> - <br> - <div class="twocol justify"><p>Bypassing ATSAM3X8E (Due) bootloader via Serial Wire Debug (SWD).</p> - -<p>Toolchain: ST-LINK/V2 programmer, OpenOCD, ARM GNU Compiler Toolchain.</p> - -<p>ARM chips boot into 0x00000. GPNVM bits map one of ROM, flash0, flash1 to -0x00000:</p> - -<ul> - <li>GPNVM1=0 → ROM (default).</li> - <li>GPNVM1=1 and GPNVM2=0 → flash0.</li> - <li>GPNVM1=1 and GPNVM2=1 → flash1.</li> -</ul> - -<p>By default, control jumps to Atmel’s SAM-BA bootloader in ROM. To bypass, set -GPNVM1=1 and place vector table at 0x80000 (flash0).</p> - -<p>Connect ST-LINK/v2 to Arduino Due’s DEBUG port:</p> - -<table style="border: none; width: 100%;"> - <tr style="border: none;"> - <td style="border: none; width: 50%; vertical-align: top; background-color: transparent;"> - <img src="schematic.png" alt="Pinout" style="width: 100%" /> - <p style="text-align: center;">Wiring</p> - </td> - <td style="border: none; width: 50%; vertical-align: top; background-color: transparent;"> - <img src="connections.jpeg" alt="Circuit" style="width: 100%" /> - <p style="text-align: center;">Arduino Due</p> - </td> - </tr> -</table> - -<p>Remap memory:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ openocd -f openocd-due.cfg -$ telnet localhost 4444 - > halt - > at91sam3 gpnvm show - > at91sam3 gpnvm set 1 - > at91sam3 gpnvm show -</code></pre></div></div> - -<p>Full command list is in OpenOCD manual AT91SAM3 (flash driver section).</p> - -<p>Compile and upload program:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -T script.ld \ - -nostartfiles \ - -nostdlib \ - -o a.elf main.c -$ openocd -f openocd-due.cfg -c "program a.elf verify reset exit" -</code></pre></div></div> - -<p>Commit: -<a href="https://git.asciimx.com/bare-metal-arduino-due/commit/?id=318496925ca76668dd9d63c3d060376f489276f8">3184969</a></p> - -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> |