The RP2040 MicroPython loader always fetched the plain RPI_PICO build, which
ships no `network` module and no CYW43 WiFi driver. Every Pico W WiFi/MQTT
example therefore failed at `import network` ("no module named 'network'"),
which surfaced as a compile/run error in the editor.
- getFirmware()/loadUserFiles() are now variant-aware. pi-pico-w boards load
RPI_PICO_W-20230426-v1.20.0 (network/socket/ssl + the CYW43439 driver) and
write the LittleFS at the W board's flash offset (0x12c000, 212 blocks)
instead of the plain Pico's 0xa0000/352. The W firmware spans flash to
~0xab000 and would otherwise be clobbered by the filesystem. Each variant
gets its own IndexedDB cache key.
- The variant is selected by the presence of the already-wired CYW43 emulator
(attachCyw43 runs for pi-pico-w boards only).
- loadMicroPython swaps in a fresh RP2040 each run, so the CYW43 PIO-FIFO hooks
are re-installed on the new instance; otherwise the driver's gSPI traffic
never reaches the emulator and WiFi never comes up.
- Bundle micropython-rp2040w.uf2 as the offline fallback.
- Point the ThingsBoard example at the simulator's Velxio-GUEST network.
ESP32-C3 already uses the QEMU backend via Esp32Bridge, not browser-side
emulation. This adds MicroPython support by including C3 in the supported
set, adding the C3 firmware variant to the loader, and bundling the
fallback firmware binary.
Also fixes misleading type comments that said "browser emulation" for C3
boards — they actually use QEMU backend.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Extends MicroPython support (Phase 2) to ESP32 Xtensa boards running on
QEMU. Firmware is downloaded from micropython.org, cached in IndexedDB,
and loaded into QEMU. User code is injected via the raw-paste REPL
protocol after the MicroPython REPL boots.
- Create Esp32MicroPythonLoader.ts for firmware download/cache
- Add raw-paste REPL injection (Ctrl+A → Ctrl+E → code → Ctrl+D) to Esp32Bridge
- Extend loadMicroPythonProgram in store for ESP32 path
- Add ESP32 default MicroPython content (GPIO 2 blink)
- Simplify SerialMonitor Ctrl+C/D to work for all MicroPython boards
- Bundle fallback firmware for ESP32 and ESP32-S3
- Add all ESP32 board variants to SerialMonitor tab maps
Closes#3 (Phase 2)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements MicroPython emulation for Raspberry Pi Pico boards running
entirely in the browser using rp2040js. Users can toggle between
Arduino C++ and MicroPython modes via a language selector dropdown.
Key changes:
- Add LanguageMode type and BOARD_SUPPORTS_MICROPYTHON to board types
- Create MicroPythonLoader.ts: UF2 firmware parser, LittleFS filesystem
builder (via littlefs-wasm), IndexedDB firmware caching
- Extend RP2040Simulator with loadMicroPython() method using USBCDC for
serial REPL instead of UART
- Add setBoardLanguageMode and loadMicroPythonProgram store actions
- Update EditorToolbar with language toggle and MicroPython compile flow
- Enhance SerialMonitor with REPL label, Ctrl+C/D support
- Bundle MicroPython v1.20.0 UF2 firmware as fallback in public/firmware/
- Update useEditorStore to create main.py default for MicroPython mode
Closes#3
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
David Montero