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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/whitequark/statuses/114524609590547095">✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Sunday, 18-May-2025 03:34:22 JST</a><a href="https://mastodon.social/@whitequark" title="whitequark@mastodon.social"><img src="https://gnusocial.jp/avatar/105710-48-20230309163231.webp" width="48" height="48" alt="✧✦Catherine✦✧" style="position: absolute; left: 0; top: 0;">✧✦Catherine✦✧</a></section><article><p><a href="https://mastodon.social/tags/GlasgowInterfaceExplorer" rel="tag">#GlasgowInterfaceExplorer</a> now has a high-performance SPI analyzer! it runs at up to 100 MHz (with some caveats)</p><p>as an example, I wrote this tiny script that extracts data from SD card SPI transactions and lets me reconstruct an image file that an embedded device is reading</p><p>full code at: <a href="https://github.com/GlasgowEmbedded/glasgow/pull/817" rel="nofollow">https://github.com/GlasgowEmbedded/glasgow/pull/817</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5068443#notice-9937569">In conversation</a><time datetime="2025-05-18T03:34:22+09:00" title="Sunday, 18-May-2025 03:34:22 JST">about 18 days ago</time> <span>from <span><a href="https://mastodon.social/@whitequark/114524609590547095" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@whitequark/114524609590547095">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/4641820">source code for a script that captures COPI/CIPO from the SPI analyzer and then crudely dissects it, implementing only a few commands from the SD card SPI protocol</a></label><br><a href="https://files.mastodon.social/media_attachments/files/114/524/600/004/881/399/original/9ed0dbdad6681e5d.png" rel="external">https://files.mastodon.social/media_attachments/files/114/524/600/004/881/399/original/9ed0dbdad6681e5d.png</a></li><li><label><a rel="external" href="https://gnusocial.jp/attachment/4641821">console output from the script on the previous image, showing some command tokens (CMD17, CMD18, CMD12) as well as data, overlaid with an image editor displaying a colorful bitmap saying "gay"</a></label><br><a href="https://files.mastodon.social/media_attachments/files/114/524/603/276/246/230/original/6676fee0190ad2ed.png" rel="external">https://files.mastodon.social/media_attachments/files/114/524/603/276/246/230/original/6676fee0190ad2ed.png</a></li><li><article><header><div>Domain not in remote thumbnail source whitelist: opengraph.githubassets.com</div><h5><a href="https://github.com/GlasgowEmbedded/glasgow/pull/817">Add SPI analyzer applet by whitequark · Pull Request #817 · GlasgowEmbedded/glasgow</a></h5><div></div></header><div></div><footer></footer></article></li></ol></footer></blockquote>

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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Sunday, 18-May-2025 03:34:22 JST ✧✦Catherine✦✧
#GlasgowInterfaceExplorer now has a high-performance SPI analyzer! it runs at up to 100 MHz (with some caveats)
as an example, I wrote this tiny script that extracts data from SD card SPI transactions and lets me reconstruct an image file that an embedded device is reading
full code at: https://github.com/GlasgowEmbedded/glasgow/pull/817
In conversationabout 18 days ago from mastodon.socialpermalink
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