Host initdump proved mipidsi's MADCTL (0x48), COLMOD, and address window (CASET 0..319 / RASET 0..479) already match CircuitPython exactly — so the 1/4 + rotation wasn't an addressing bug. The missing piece was the ST7796 extension init (B6/power/gamma) running as the PRIMARY bring-up right after reset (grafting it onto mipidsi's already-DISPON'd panel blanked or under-configured it). Now: manual hw reset + full CircuitPython st7796_init via the raw interface, THEN Builder without reset_pin (re-asserts only the basics, extension setup persists). initdump extended to also dump CASET/RASET draw windows. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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