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<!doctype html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>ESP32-S3 C64 READY Cheat Sheet</title><style>:root{--bg:#17123b;--p:#40318d;--a:#7869c4;--t:#ded8ff;--c:#100c2b;--l:#6657ae}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--t);font:15px/1.55 Consolas,monospace}header{padding:60px 20px;background:var(--p);border-bottom:8px solid var(--a)}.w{max-width:1080px;margin:auto}h1{font-size:clamp(38px,8vw,86px);line-height:.9;margin:0;color:#fff;text-shadow:5px 5px #211765}header p{color:#c5bced}nav{position:sticky;top:0;background:#211765ee;padding:10px;z-index:2;text-align:center}nav a{color:#fff;margin:0 8px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:32px 16px}.card{background:var(--p);padding:20px;border:1px solid var(--l);box-shadow:6px 6px var(--c)}.wide{grid-column:1/-1}h2{margin-top:0;color:#fff}h3{color:#c5bced}pre{position:relative;background:var(--c);border-left:4px solid var(--a);padding:14px 55px 14px 14px;overflow:auto;white-space:pre-wrap}.copy{position:absolute;right:7px;top:7px;background:var(--p);color:#fff;border:1px solid var(--l);padding:4px;cursor:pointer}code{font-family:inherit}table{width:100%;border-collapse:collapse}th,td{text-align:left;vertical-align:top;padding:9px;border-bottom:1px solid var(--l)}td code,.pill{background:var(--c);padding:2px 5px;color:#fff}.tree{background:var(--c);padding:16px;white-space:pre;overflow:auto}.timeline{list-style:none;padding:0}.timeline li{display:grid;grid-template-columns:90px 1fr;gap:14px;padding:10px 0;border-bottom:1px solid var(--l)}.hash{color:#91e0ae}.note{background:#211765;border-left:4px solid #91e0ae;padding:12px}footer{text-align:center;padding:30px;color:#aaa0d7}@media(max-width:740px){.grid{grid-template-columns:1fr}.wide{grid-column:auto}.timeline li{grid-template-columns:1fr}}</style></head><body><header><div class="w"><div>WAVESHARE ESP32-S3-TOUCH-LCD-3.49</div><h1>READY.</h1><p>Build · Upload · Git · Gitea · Files · Commits</p></div></header><nav><a href="#quick">Quick start</a><a href="#repo">Repository</a><a href="#files">Files</a><a href="#commits">Commits</a><a href="#c64">C64 values</a></nav><main class="w grid"><section class="card wide" id="quick"><h2>Quick start</h2><p><span class="pill">S:\mgCode\waveshare-c64-ready</span> <span class="pill">COM43</span> <span class="pill">main</span></p><h3>Build</h3><pre><code>cd S:\mgCode\waveshare-c64-ready
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C:\Users\Malko\.platformio\penv\Scripts\platformio.exe run</code><button class="copy">copy</button></pre><h3>Build and upload</h3><pre><code>C:\Users\Malko\.platformio\penv\Scripts\platformio.exe run --target upload --upload-port COM43</code><button class="copy">copy</button></pre><h3>Serial monitor</h3><pre><code>C:\Users\Malko\.platformio\penv\Scripts\platformio.exe device monitor --port COM43 --baud 115200</code><button class="copy">copy</button></pre></section><section class="card" id="repo"><h2>Create the local Git repository</h2><pre><code>mkdir S:\mgCode\waveshare-c64-ready
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cd S:\mgCode\waveshare-c64-ready
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git init -b main
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git remote add origin https://codex.malko.net/helios/waveshare-c64-ready.git
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git remote -v</code><button class="copy">copy</button></pre><h3>First commit and push</h3><pre><code>git add .
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git commit -m "First working C64 READY screen"
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git -c credential.username=helios push -u origin main</code><button class="copy">copy</button></pre><div class="note">Push-to-create is disabled on this Gitea server. Create the empty remote repository first.</div></section><section class="card"><h2>Create the Gitea repository by API</h2><p>Use a personal access token placeholder. Never save a real token in source control.</p><pre><code>$headers = @{ Authorization = "token <GITEA_TOKEN>" }
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$body = @{ name="waveshare-c64-ready"; description="C64 READY screen for Waveshare ESP32-S3 LCD"; private=$false; auto_init=$false } | ConvertTo-Json
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Invoke-RestMethod -Method Post -Uri "https://codex.malko.net/api/v1/user/repos" -Headers $headers -ContentType "application/json" -Body $body</code><button class="copy">copy</button></pre><h3>Detect the board port</h3><pre><code>Get-CimInstance Win32_SerialPort | Select-Object DeviceID,Name,PNPDeviceID</code><button class="copy">copy</button></pre><p>The board appeared as USB Serial Device <strong>COM43</strong>, VID 303A, PID 1001.</p></section><section class="card wide" id="files"><h2>Files and what changed</h2><div class="tree">waveshare-c64-ready/
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├── platformio.ini ESP32-S3, 16 MB flash, OPI PSRAM, LVGL 8.4
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├── README.md Build instructions and source links
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├── cheat-sheet.html This portable reference page
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└── src/
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├── main.cpp I²C → LCD/LVGL → backlight startup
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├── c64_ui.c C64 colors, ROM glyphs, cursor timer
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├── c64_ui.h c64_ui_create() declaration
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├── user_config.h Pins, 640×172 rotated dimensions
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├── lvgl_port.c/.h Display flush, rotation, touch and LVGL task
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├── i2c_bsp.c/.h I²C setup
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├── axs15231b/ Official Waveshare LCD driver
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├── lcd_bl_bsp/ Backlight PWM driver
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└── touch/ Capacitive touch driver</div><table><tr><th>Task</th><th>File</th><th>Important setting</th></tr><tr><td>Rotate right 90°</td><td>src/user_config.h</td><td><code>#define Rotated USER_DISP_ROT_90</code></td></tr><tr><td>Use real C64 glyphs</td><td>src/c64_ui.c</td><td>8-byte uppercase/graphics ROM rows</td></tr><tr><td>PAL blink</td><td>src/c64_ui.c</td><td><code>lv_timer_create(cursor_blink, 400, cursor)</code></td></tr><tr><td>Show custom UI</td><td>src/lvgl_port.c</td><td><code>c64_ui_create()</code></td></tr><tr><td>Fix PlatformIO includes</td><td>src/lvgl_port.c</td><td>axs15231b/... and touch/...</td></tr></table></section><section class="card"><h2>Normal Git workflow</h2><pre><code>git status --short
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git diff --check
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git diff</code><button class="copy">copy</button></pre><pre><code>git add src/c64_ui.c src/user_config.h
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git commit -m "Describe the change"
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git -c credential.username=helios push origin main</code><button class="copy">copy</button></pre><pre><code>git log --oneline -3
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git status --short</code><button class="copy">copy</button></pre><p>Remote: <a style="color:white" href="https://codex.malko.net/helios/waveshare-c64-ready">codex.malko.net/helios/waveshare-c64-ready</a></p></section><section class="card" id="c64"><h2>Final C64 values</h2><table><tr><th>Background</th><td>#40318D · RGB 64,49,141</td></tr><tr><th>Text/cursor</th><td>#7869C4 · RGB 120,105,196</td></tr><tr><th>Text</th><td>READY.</td></tr><tr><th>Font</th><td>C64 uppercase/graphics ROM, 8×8 raster glyphs</td></tr><tr><th>Cursor</th><td>Square cell on the line below</td></tr><tr><th>PAL timing</th><td>400 ms visible + 400 ms hidden</td></tr><tr><th>Rate</th><td>800 ms cycle · 1.25 blinks/second</td></tr></table><p>Formula: 20 system ticks ÷ 50 Hz = 0.40 seconds per state.</p></section><section class="card wide" id="commits"><h2>Commit history</h2><ol class="timeline"><li><span class="hash">c81cb49</span><span><strong>First working C64 READY screen</strong><br>PlatformIO project, Waveshare drivers, C64 palette and initial UI.</span></li><li><span class="hash">de99bf6</span><span><strong>Use rotated authentic C64 bitmap font</strong><br>90° rotation and exact character-ROM glyph bytes.</span></li><li><span class="hash">1fea7b1</span><span><strong>Maximize READY and set two-blink cursor</strong><br>Experimental full-width READY layout.</span></li><li><span class="hash">9dea865</span><span><strong>Restore READY layout and authentic cursor timing</strong><br>Restored READY. and cursor below.</span></li><li><span class="hash">631d3a1</span><span><strong>Keep cursor visible longer than hidden</strong><br>Experimental asymmetric timing.</span></li><li><span class="hash">88141a7</span><span><strong>Match PAL C64 cursor timing</strong><br>Final symmetric 400 ms on/off timing.</span></li></ol></section><section class="card wide"><h2>Troubleshooting</h2><table><tr><th>Upload cannot connect</th><td>Hold BOOT, tap RESET, release BOOT, retry and recheck COM port.</td></tr><tr><th>HTTP 403 on first push</th><td>Create the Gitea repository through UI/API before pushing.</td></tr><tr><th>Authentication failed</th><td>Refresh Gitea token/credential, retry the push.</td></tr><tr><th>Wrong Arduino include path</th><td>Remove the leading src/ when files already live beneath PlatformIO src/.</td></tr><tr><th>Clean rebuild</th><td><code>platformio.exe run --target clean</code>, then <code>platformio.exe run</code>.</td></tr></table></section></main><footer>READY. · ESP32-S3 C64 project cheat sheet · 2026-08-01</footer><script>document.querySelectorAll(".copy").forEach(function(b){b.onclick=function(){var t=b.previousElementSibling.innerText;navigator.clipboard.writeText(t).then(function(){b.textContent="copied";setTimeout(function(){b.textContent="copy"},1000)})}});</script></body></html>
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