Consolidates all dev work including the orphaned-read race fix:
- Single read-pump feeds a FIFO ByteStreamBuffer; readExact/drain/
serial monitor consume from buffer (no orphaned reader.read()).
- DTR timing 50ms+100ms, port reuse, pre-sync drain.
- Vitest + ByteStreamBuffer unit tests (7 pass).
- APP_VERSION 18 for SW cache-bust.
Verified on CH340 (1a86:7523): INSYNC 0x14 + STK_OK 0x10
received cleanly, deploy succeeds.
WARN-1: pumpRunning now reset to false when the pump loop exits via
{done} or error, so future startPump() isn't a silent no-op.
WARN-3: readExact clears rxBuffer on timeout to avoid stale bytes
leaking into the next non-retried STK500 command.
readExact and drainStray now consume the FIFO buffer fed by the pump
instead of calling reader.read() directly. No orphaned reader.read()
promise can swallow optiboot INSYNC/OK replies anymore. This is the
core fix for "get_sync failed after N attempts".
Single pump loop becomes the only reader.read() caller, feeding
rxBuffer. Serial monitor + readExact/drain will consume from the
buffer (next tasks). Build passes.
Test runner setup (vitest) plus deadline-based FIFO buffer that
becomes the single sink for serial bytes. readExact keeps
partial bytes buffered on timeout — the exact case that dropped
optiboot INSYNC/OK replies under the orphaned-reader race.
7 unit tests pass.
- Update lesson_service.py to parse markdown link format [title](path)
- Convert all lesson files to use markdown link format for prerequisites
- Backend now extracts slug directly from link path
- Supports both plain text and markdown link formats
- Add device_name module: NVS-persisted custom name with MAC-suffix
fallback (Velxio-XXXX) so every device is uniquely identifiable
out-of-the-box in BLE pairing dialog
- Add wifi_ap module: first-boot SoftAP (Velxio-Setup-XXXX / velxio123)
with embedded HTTP config portal at 192.168.4.1 for renaming
- main.c: enter AP setup mode when no custom name is set
- ble_service.c: use dynamic device name from device_name_get(),
with adv-packet length guard
- led_button.c: BOOT button long-press (5s) factory reset (erase NVS)
- sdkconfig.defaults: enable WiFi stack + set NimBLE default name
Frontend deviceName display already committed in 01f68d3.
v3.1 enhancements (4 Jul 2026):
- Baud dropdown (9600/19200/38400) + CMD_SET_BAUD
- LED blink patterns per-state (IDLE/RECEIVING/FLASHING/SERIAL_BRIDGE)
- Arduino event-based connect/disconnect (CherryUSB)
- Serial terminal always visible saat paired
- Re-deploy fix: serial_bridge_stop before parser
- Dual baud: 115200 STK500 + 9600 serial bridge
- Footer v15, SW cache v14
This is a checkpoint commit. Next cycle: port Deploy from
SvelteKit (DeployTab.svelte) to Velxio React app (native integration).
DeployTab.svelte will be deprecated after port complete.
cad90eb merutekan DATA melalui sendCommand() dengan readPoll state===1
yang selalu true — menyebabkan chunk lambat 5s/kirim saat ACK di-drop.
Kembalikan ke direct writeValueWithResponse + waitForAck.
Selama transfer aktif tidak ada idle gap (Qualcomm >8s), jadi ACK notify
tidak terpengaruh idle-drop.
Perubahan:
- sendCommandWithRetry: build payload sendiri, pakai chunkCRC param,
write+waitForAck langsung (tidak lewat sendCommand)
- sendCommand: hanya handle INIT dan END (DATA dihapus dari blok)
- Hapus writeSucceeded flag (tidak lagi dipakai)
- Hapus readPoll fallback untuk DATA
- Bump v12 (Footer + SW cache)
a2nr