Firmware¶

Each phase that needs an app gets its own folder under firmware/. That folder is a frozen snapshot: later phases add a new directory instead of rewriting an old one.

firmware/
  01-hello/          # Phase 1 (+ kept for Phases 2–3)
  04-i2c-scan/       # Phase 4
  05-accel/          # Phase 5
  06-tft-fill/       # Phase 6
  07-intensity-ui/   # Phase 7

Phase 0 has no app (erased chip). Phases 2–3 keep flashing 01-hello unchanged.

On the board now¶

firmware/07-intensity-ui — Phase 7 STA/LTA event + PGA→MMI (Wald 1999) demo UI.

Previous: firmware/06-tft-fill · firmware/05-accel · firmware/04-i2c-scan · firmware/01-hello.

Setting	Value
Port	COM `/dev/ttyACM0` (CH343)
MAC	`28:84:85:8C:D0:40`
Flash / PSRAM	16MB / 8MB

CDC off so Serial is on COM. Sources: 07-intensity-ui/src/main.cpp · 07-intensity-ui/platformio.ini

Build and flash¶

Same pattern for every phase: cd into the phase folder, build with env esp32-s3-n16r8, then upload to the COM port. Phase 1 as the worked example —

cd firmware/01-hello
pio run -e esp32-s3-n16r8

RAM:   [=         ]   8.1% (used 26700 bytes from 327680 bytes)
Flash: [=         ]   5.8% (used 380669 bytes from 6553600 bytes)
========================= [SUCCESS] Took 10.19 seconds =========================

pio run -e esp32-s3-n16r8 -t upload --upload-port /dev/ttyACM0

Connected to ESP32-S3 on /dev/ttyACM0:
…
Hash of data verified.
Hard resetting via RTS pin...
========================= [SUCCESS] Took 10.32 seconds =========================

Serial: Phase 1, section 1.3.

Stage map¶

Phase	Folder	On the chip
0	—	empty (erased)
1	`01-hello`	hello
2	`01-hello`	same image, not edited
3	`01-hello`	same image, not edited
4	`04-i2c-scan`	I2C scan
5	`05-accel`	accel stream
6	`06-tft-fill`	TFT SPI fill
7	`07-intensity-ui`	lab magnitude UI

Change log¶

Phase 0 — erase; no app
Phase 1 — added firmware/01-hello/
Phase 4 — added firmware/04-i2c-scan/
Phase 5 — added firmware/05-accel/
Phase 6 — added firmware/06-tft-fill/
Phase 7 — added firmware/07-intensity-ui/