velxio/backend
David Montero Crespo 5606e7ebea feat(esp32): server-side matrix keypad — columns driven synchronously in QEMU
A 4x4 membrane keypad scan is us-timing-critical: firmware drives one
row LOW and reads the columns back within the same loop pass, far
faster than the browser<->QEMU websocket round trip, so the browser-side
matrix simulation could never register a key on ESP32 boards.

Worker: new 'matrix-keypad' sensor type (rows/cols GPIO lists, pressed
key set). _on_dir_change/_on_pin_change recompute the column levels
synchronously on the QEMU thread — the pinMode(OUTPUT) transition is
the trigger on steady-state passes, since the row's output latch stays
LOW and the digitalWrite fires no change callback. Async gpio_in writes
to keypad-owned columns are ignored so the browser's generic matrix
logic can't clobber them.

Frontend: SimulatorCanvas attaches the keypad as a matrix-keypad sensor
when every R/C pin resolves to an ESP32-family board GPIO, and streams
the pressed-key set from the element's button-press/release events.
2026-08-19 20:44:00 +02:00
..
app feat(esp32): server-side matrix keypad — columns driven synchronously in QEMU 2026-08-19 20:44:00 +02:00
board-indexes fix(docker): vendor drazzy.com board index + seed missing indexes at boot 2026-07-17 06:41:44 +02:00
scripts feat: persist multi-board projects + add auto-save 2026-05-01 13:43:33 -03:00
sdk feat(chips): programmable retro CPU chips with external ROM 2026-05-18 23:38:18 -03:00
tests feat(espidf): honor CDCOnBoot menu option in 4-part FQBNs 2026-08-19 16:39:59 +02:00
.env.example chore(oss): drop dead auth/DB dependencies from OSS image 2026-05-14 17:06:27 -03:00
Dockerfile fix(docker): vendor drazzy.com board index + seed missing indexes at boot 2026-07-17 06:41:44 +02:00
debug_qemu.py feat: add documentation page and Arduino serial integration test 2026-03-12 08:17:29 -03:00
mcp_server.py feat: integrate MCP (Model Context Protocol) for agent compatibility 2026-03-11 15:29:55 +00:00
mcp_sse_server.py feat: integrate MCP (Model Context Protocol) for agent compatibility 2026-03-11 15:29:55 +00:00
requirements.txt fix(ci): cap mcp below 2.0 — the backend suite has not run since 2026-07-29 2026-08-10 17:14:39 +02:00