feat(firmware): host-programmable per-pixel LED matrix framebuffer - #623
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hongquanli wants to merge 1 commit into
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feat(firmware): host-programmable per-pixel LED matrix framebuffer#623hongquanli wants to merge 1 commit into
hongquanli wants to merge 1 commit into
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Add a programmable LED-matrix source so the host can drive each of the 128 LEDs individually. This moves all pattern logic (rings, DPC, custom apertures) to the host — new patterns no longer require a firmware reflash. - ILLUMINATION_SOURCE_LED_ARRAY_PROGRAMMABLE (10): displays a host-painted framebuffer (led_matrix_user), kept separate from the live matrix so it survives the clear_matrix() strobe-off between acquisition frames. - SET_ILLUMINATION_LED_MATRIX_PIXEL (45): write one LED into the framebuffer (no show). CLEAR_ILLUMINATION_LED_MATRIX (46): zero the framebuffer. - Pixel scaling and R/G channel order match the built-in full/half patterns, so a host-painted color renders identically to the same built-in color. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Make the LED matrix host-programmable per-pixel, so patterns (rings, DPC, custom apertures) are computed on the host instead of hard-coded in firmware. New patterns no longer require a firmware reflash.
Changes
ILLUMINATION_SOURCE_LED_ARRAY_PROGRAMMABLE(10) — displays a host-painted 128-LED framebuffer (led_matrix_user). It's kept separate from the livematrixso it survives theclear_matrix()that strobe-off does between acquisition frames; turning the source on copies the framebuffer into the live matrix and shows it.SET_ILLUMINATION_LED_MATRIX_PIXEL(45) — write one LED into the framebuffer (no show).CLEAR_ILLUMINATION_LED_MATRIX(46) — zero the framebuffer./255*MAX_INTENSITYscaling and R/G channel order match the built-in full/half patterns, so a host-painted color renders identically to the same built-in color.Testing
pio run -e teensy41builds clean; flashed to a Teensy 4.1 and exercised via the host (see companion host PR): painting a 128-LED annulus frame and displaying it in live view and acquisition.Companion PR
Host support (protocol + Phase Contrast configurator) is in a separate host-only PR that depends on this firmware being flashed.