Add active buzzer test with SoftSPI touch and LVGL.

GPIO22 digital on/off toggle (default off) and flashable firmware/cyd package.

Co-authored-by: Cursor <cursoragent@cursor.com>

firmware/cyd/VERSION.txt

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+name: CYD Active Buzzer (cyd)
+git: unknown
+date: 2026-10-23
+board: ESP32-2432S028R (ILI9341)
+features: SoftSPI touch, LVGL, active buzzer on GPIO22
+flash_size: 4MB
+offsets:
+  0x1000  bootloader.bin
+  0x8000  partitions.bin
+  0xe000  boot_app0.bin
+  0x10000 firmware.bin
+sha256:
+  bootloader.bin  3D234A7471F67B013686DABD4DEE7C1FA915C9928463616A94BC9297ACF1ABF8
+  boot_app0.bin   F94C5D786A7A8FAB06AC5D10E33BF37711A6697636DC037559EA19CC410A17F0
+  firmware.bin    2106E39F9BB494694B2D7B1B15FF07CD70C23B529F9AF7CD348EF08E14A32E51
+  partitions.bin  148B959CBFF1C38AA8E1D5C0BA9D612C54997B945E56A63F41223EEF650653A1

firmware/cyd/flash.bat

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+@echo off
+setlocal
+cd /d "%~dp0"
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0flash.ps1" %*
+exit /b %ERRORLEVEL%

firmware/cyd/flash.ps1

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+# Flash archived CYD TF+Speaker firmware (no rebuild needed)
+# Usage:
+#   .\flash.ps1
+#   .\flash.ps1 -Port COM5
+#   .\flash.ps1 -Port COM5 -Baud 460800
+
+param(
+  [string]$Port = "",
+  [int]$Baud = 921600
+)
+
+$ErrorActionPreference = "Stop"
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+Set-Location $here
+
+function Find-Esptool {
+  $pio = Get-Command pio -ErrorAction SilentlyContinue
+  if (-not $pio) {
+    $pioPath = Join-Path $env:USERPROFILE "AppData\Local\Programs\Python\Python312\Scripts\pio.exe"
+    if (Test-Path $pioPath) {
+      $env:Path = "$(Split-Path $pioPath);$env:Path"
+      $pio = Get-Command pio -ErrorAction SilentlyContinue
+    }
+  }
+  if ($pio) {
+    $pkg = Join-Path $env:USERPROFILE ".platformio\packages\tool-esptoolpy\esptool.py"
+    if (Test-Path $pkg) { return @{ Kind = "py"; Path = $pkg } }
+  }
+  $py = Get-Command python -ErrorAction SilentlyContinue
+  if ($py) {
+    try {
+      & python -c "import esptool" 2>$null
+      if ($LASTEXITCODE -eq 0) { return @{ Kind = "mod"; Path = "esptool" } }
+    } catch {}
+  }
+  $esp = Get-Command esptool.py -ErrorAction SilentlyContinue
+  if ($esp) { return @{ Kind = "py"; Path = $esp.Source } }
+  return $null
+}
+
+if (-not $Port) {
+  $ports = @()
+  try {
+    Add-Type -AssemblyName System.IO.Ports -ErrorAction SilentlyContinue | Out-Null
+    $ports = [System.IO.Ports.SerialPort]::GetPortNames() | Sort-Object
+  } catch {}
+  if (-not $ports -or $ports.Count -eq 0) {
+    $ports = Get-CimInstance Win32_SerialPort -ErrorAction SilentlyContinue |
+      Select-Object -ExpandProperty DeviceID | Sort-Object
+  }
+  if (-not $ports -or $ports.Count -eq 0) {
+    Write-Error "No serial ports found. Plug in the CYD USB cable, then retry with -Port COMx"
+  }
+  if ($ports.Count -eq 1) {
+    $Port = $ports[0]
+  } else {
+    Write-Host "Available ports: $($ports -join ', ')"
+    $Port = $ports[-1]
+    Write-Host "Using last port: $Port (override with -Port)"
+  }
+}
+
+$tool = Find-Esptool
+if (-not $tool) {
+  Write-Error "esptool not found. Install PlatformIO (`pio`) or: pip install esptool"
+}
+
+$needed = @("bootloader.bin", "partitions.bin", "boot_app0.bin", "firmware.bin")
+foreach ($f in $needed) {
+  if (-not (Test-Path (Join-Path $here $f))) {
+    Write-Error "Missing $f — run ..\export_from_build.ps1 from repo root first"
+  }
+}
+
+$argsCommon = @(
+  "--chip", "esp32",
+  "--port", $Port,
+  "--baud", "$Baud",
+  "--before", "default_reset",
+  "--after", "hard_reset",
+  "write_flash", "-z",
+  "--flash_mode", "dio",
+  "--flash_freq", "40m",
+  "--flash_size", "4MB",
+  "0x1000", "bootloader.bin",
+  "0x8000", "partitions.bin",
+  "0xe000", "boot_app0.bin",
+  "0x10000", "firmware.bin"
+)
+
+Write-Host "Flashing $here -> $Port @ $Baud"
+if ($tool.Kind -eq "mod") {
+  & python -m esptool @argsCommon
+} else {
+  & python $tool.Path @argsCommon
+}
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+Write-Host "Done. Open serial monitor at 115200 if needed."

firmware/cyd/meta.json

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+{
+  "boardId": "esp32-2432s028",
+  "name": "CYD Active Buzzer",
+  "summary": "Active buzzer on GPIO22: tap on / tap off, default off",
+  "description": "SoftSPI touch + LVGL. Signal->GPIO22 digital HIGH=on. Default off.",
+  "tags": ["buzzer", "active", "gpio22", "touch", "lvgl"]
+}