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twislaandClaude Sonnet 5.5
6e54658ba4
Site / build (pull_request) Successful in 9s
Seven posts imported into site/content/devlog/ with their text unchanged, links between them pointing to /devlog/, and shortcodes (sign, cast, steps, asides, folded sections, diagrams, captions) restyled in the site's palette. The 17 inline SVG diagrams carried <style> blocks and style attributes the site's Content-Security-Policy refuses: their rules moved to devlog-diagrams.css, and a diagram's minimum width is a class. An Atom feed at /devlog/atom.xml. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
56 lines
4.3 KiB
XML
56 lines
4.3 KiB
XML
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 760 316" role="img" aria-label="The life of an update. One: install, the image goes to app1 and the OTA data marks it NEW. Two: restart, the bootloader turns NEW into PENDING_VERIFY and boots app1. Three: Probation, 30 seconds up, a frame drawn, and Wi-Fi within 3 minutes if it is configured. Four: confirmed, the firmware marks itself VALID and a Toast says Updated. If it crashes or restarts before step four, the bootloader turns PENDING_VERIFY into ABORTED and boots app0 again, which says the update failed. Meanwhile app0 kept the previous firmware: the way back. The trap, under step two: Arduino's initArduino marks the image VALID before setup runs, unless verifyRollbackLater returns true.">
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<marker id="pb-arrow" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0,0 L10,5 L0,10 z" fill="currentColor"/></marker>
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<marker id="pb-arrow-ok" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path class="f-green" d="M0,0 L10,5 L0,10 z"/></marker>
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<marker id="pb-arrow-bad" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path class="f-red" d="M0,0 L10,5 L0,10 z"/></marker>
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</defs>
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<g font-family="JetBrains Mono, ui-monospace, monospace" fill="currentColor">
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<rect class="pb-box" x="16" y="40" width="170" height="80" rx="6"/>
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<text x="28" y="62" font-size="12" font-weight="600">1 install</text>
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<text x="28" y="84" font-size="11">image → app1</text>
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<text x="28" y="102" font-size="11" class="pb-dim">otadata: NEW</text>
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<rect class="pb-box" x="206" y="40" width="170" height="80" rx="6"/>
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<text x="218" y="62" font-size="12" font-weight="600">2 restart</text>
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<text x="218" y="84" font-size="11">bootloader:</text>
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<text x="218" y="102" font-size="11" class="pb-dim">NEW → PENDING_VERIFY</text>
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<rect class="pb-hot" x="396" y="40" width="170" height="80" rx="6"/>
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<text x="408" y="62" font-size="12" font-weight="600">3 Probation</text>
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<text x="408" y="84" font-size="11">30 s up, a frame</text>
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<text x="408" y="102" font-size="11" class="pb-dim">Wi-Fi within 3 min</text>
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<rect class="pb-ok" x="586" y="40" width="158" height="80" rx="6"/>
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<text x="598" y="62" font-size="12" font-weight="600">4 confirmed</text>
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<text x="598" y="84" font-size="11">→ VALID</text>
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<text x="598" y="102" font-size="11" class="pb-dim">Toast: Updated to…</text>
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<path class="pb-line" d="M186 80 H202" marker-end="url(#pb-arrow)"/>
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<path class="pb-line" d="M376 80 H392" marker-end="url(#pb-arrow)"/>
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<path class="pb-line-ok" d="M566 80 H582" marker-end="url(#pb-arrow-ok)"/>
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<rect class="pb-bad" x="396" y="196" width="348" height="76" rx="6"/>
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<text x="408" y="218" font-size="12" font-weight="600">crash or restart before 4</text>
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<text x="408" y="240" font-size="11">bootloader: PENDING_VERIFY → ABORTED</text>
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<text x="408" y="258" font-size="11" class="pb-dim">boots app0: "Update to … failed"</text>
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<path class="pb-line-bad" d="M481 120 V192" marker-end="url(#pb-arrow-bad)"/>
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<text x="408" y="294" font-size="10" class="pb-dim">(second line: bootGuard() in setup() rolls back</text>
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<text x="408" y="308" font-size="10" class="pb-dim"> a second unconfirmed start by itself)</text>
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<text x="16" y="216" font-size="11" class="pb-dim">app0 keeps the</text>
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<text x="16" y="232" font-size="11" class="pb-dim">previous firmware:</text>
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<text x="16" y="248" font-size="11" class="pb-dim">the way back</text>
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<rect class="pb-trap" x="206" y="176" width="170" height="122" rx="6"/>
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<text class="f-red" x="218" y="198" font-size="12" font-weight="600">the trap</text>
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<text x="218" y="220" font-size="11">initArduino()</text>
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<text x="218" y="238" font-size="11">marks it VALID</text>
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<text x="218" y="256" font-size="11">before setup(),</text>
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<text x="218" y="274" font-size="11" class="pb-dim">unless verify-</text>
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<text x="218" y="290" font-size="11" class="pb-dim">RollbackLater()</text>
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<path class="pb-line-bad" d="M291 176 V124" marker-end="url(#pb-arrow-bad)"/>
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<text x="16" y="22" font-size="13" font-weight="600">The life of an update</text>
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</g>
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</svg>
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