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2026-05-18Document QSPI protocol findings and display fix planYour Name
- DISPLAY_FIX_PLAN.md: root cause analysis, byte-order mismatch, PSRAM cache coherency issue, reference implementations studied - axs15231b.c: QSPI protocol rewrite with correct ArduinoGFX framing (cmd=0x02 for regs, cmd=0x32/addr=0x003C00 for pixels) - display.c: portrait centering for 320x480, render-on-change logic - Makefile: Board C support (flash-c, lock-c) - axs15231b.h: QSPI command/address constants Display shows recognizable text, colors wrong due to byte-swap
2026-05-18track: add AXS15231B display driver and QR code componentsYour Name
Components were untracked on master. Adding to feature/display-fix branch so they are version-controlled before making QSPI fixes.