micropython build+upload code buildtask

build.ps1

param([switch]$Upload, [switch]$Clean)

$ErrorActionPreference = "Stop"

$src = ".\src"
$dest = ".\mirror"
$port = "COM5"

# --- CLEAN STEP (Delete .mpy files from device) ---
if ($Clean) {
    Write-Host "`n" -NoNewline
    Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Magenta
    Write-Host "║  Cleaning .mpy files from device       ║" -ForegroundColor Magenta
    Write-Host "╚════════════════════════════════════════╝" -ForegroundColor Magenta
    $mpyFiles = mpremote connect $port ls -r : | Select-String '\.mpy$'
    
    if ($mpyFiles.Count -gt 0) {
        $mpyFiles | ForEach-Object {
            $file = $_.Line -split '\s+' | Select-Object -Last 1
            Write-Host "  ✓ Removing $file"
            mpremote connect $port rm ":/$file"
        }
        Write-Host "  Cleanup Complete`n" -ForegroundColor Green
    } else {
        Write-Host "  No .mpy files found to remove`n" -ForegroundColor Gray
    }
    
    if (-not $Upload) { exit 0 }
}

# --- BUILD STEP ---
Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Cyan
Write-Host "║  Building Mirror                       ║" -ForegroundColor Cyan
Write-Host "╚════════════════════════════════════════╝" -ForegroundColor Cyan
if (Test-Path $dest) { Remove-Item -Recurse -Force $dest }
New-Item -ItemType Directory -Path $dest | Out-Null

# Store mpy-cross errors and traceback for later display
$mpyErrorTrace = ""

try {
    Get-ChildItem -Path $src -Recurse | ForEach-Object {
        $relativePath = $_.FullName.Substring((Get-Item $src).FullName.Length)
        $destPath = "$dest$relativePath"

        if ($_.PSIsContainer) {
            if (-not (Test-Path $destPath)) { New-Item -ItemType Directory -Path $destPath | Out-Null }
        } else {
            # Keep boot.py and main.py as TEXT
            if ($_.Name -eq "boot.py" -or $_.Name -eq "main.py") {
                Copy-Item -Path $_.FullName -Destination $destPath -Force
            }
            elseif ($_.Extension -eq ".py") {
                # Compile everything else to .mpy
                $mpyDest = $destPath -replace "\.py$", ".mpy"
                Write-Host "  ⟳ Compiling $($_.Name)..."
                
                # Execute inside a script block to relax error preference locally
                # This prevents stderr from triggering an immediate Stop exception
                $mpyOutput = & { 
                    $ErrorActionPreference = "Continue" 
                    mpy-cross -march=xtensawin -O2 $_.FullName -o $mpyDest 
                } 2>&1

                if ($LASTEXITCODE -ne 0) {
                    $mpyErrorTrace += "Command: mpy-cross -march=xtensawin -O2 $($_.FullName) -o $mpyDest`n"
                    $mpyErrorTrace += ($mpyOutput | Out-String)
                    $mpyErrorTrace += "`n"
                    Write-Host "  Failed to compile $($_.Name)" -ForegroundColor Red
                    throw "Failed to compile $($_.FullName)"
                }
            }
            else {
                # Copy assets (json, txt, etc.)
                Copy-Item -Path $_.FullName -Destination $destPath -Force
            }
        }
    }
} catch {
    Write-Host "`n" -NoNewline
    Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Red
    Write-Host "║  Error During Build                    ║" -ForegroundColor Red
    Write-Host "╚════════════════════════════════════════╝" -ForegroundColor Red
    Write-Host "  $_" -ForegroundColor Red

    if ($mpyErrorTrace) {
        $mpyErrorTrace | Write-Host -ForegroundColor Red
    }

    exit 1
}

# --- UPLOAD STEP (Using mpremote) ---
if ($Upload) {
    Write-Host "`n" -NoNewline
    Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Yellow
    # Dynamically pad the string to match the box width (40 chars)
    $uploadMsg = "  Uploading to $port".PadRight(40)
    Write-Host "║$uploadMsg║" -ForegroundColor Yellow
    Write-Host "╚════════════════════════════════════════╝" -ForegroundColor Yellow
    
    try {
        # We iterate over the immediate children of 'mirror' and copy them to root ':'
        # This prevents creating a parent '/mirror' folder on the device.
        Get-ChildItem -Path $dest | ForEach-Object {
            $localItem = $_.FullName
            $remoteItem = ":" # Colon represents root on device
            
            Write-Host "  ↑ Uploading $($_.Name)..."
            
            # 'cp -r' handles both files and folders recursively
            # Relax error preference strictly for execution to capture exit code manually
            & {
                $ErrorActionPreference = "Continue"
                mpremote connect $port cp -r $localItem $remoteItem
            }

            if ($LASTEXITCODE -ne 0) {
                throw "Failed to upload $($_.Name)"
            }
        }
        
        # Optional: Soft Reset the device to load new code
        Write-Host "`n" -NoNewline
        Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Magenta
        Write-Host "║  Resetting Device                      ║" -ForegroundColor Magenta
        Write-Host "╚════════════════════════════════════════╝" -ForegroundColor Magenta
        
        & {
            $ErrorActionPreference = "Continue"
            mpremote connect $port reset
        }

        if ($LASTEXITCODE -ne 0) {
            throw "Failed to reset device"
        }
        
        Write-Host "`n" -NoNewline
        Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Green
        Write-Host "║  Upload Complete ✓                     ║" -ForegroundColor Green
        Write-Host "╚════════════════════════════════════════╝`n" -ForegroundColor Green
    } catch {
        Write-Host "`n" -NoNewline
        Write-Host "╔════════════════════════════════════════╗" -ForegroundColor Red
        Write-Host "║  Error During Upload                   ║" -ForegroundColor Red
        Write-Host "╚════════════════════════════════════════╝" -ForegroundColor Red
        Write-Host "  $_" -ForegroundColor Red
        exit 1
    }
}

tasks.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Build mpy",
            "type": "shell",
            "command": "powershell",
            "args": [
                "-ExecutionPolicy",
                "Bypass",
                "-File",
                "${workspaceFolder}/build.ps1"
            ],
            "problemMatcher": [],
            "group": "build"
        },
        {
            "label": "Build & Upload",
            "type": "shell",
            "command": "powershell",
            "args": [
                "-ExecutionPolicy",
                "Bypass",
                "-File",
                "${workspaceFolder}/build.ps1",
                "-Upload"
            ],
            "problemMatcher": [],
            "group": "build"
        },
        {
            "label": "Clean board",
            "type": "shell",
            "command": "powershell",
            "args": [
                "-ExecutionPolicy",
                "Bypass",
                "-File",
                "${workspaceFolder}/build.ps1",
                "-Clean"
            ],
            "problemMatcher": [],
            "group": "build"
        },
        {
            "label": "Clean & Upload",
            "type": "shell",
            "command": "powershell",
            "args": [
                "-ExecutionPolicy",
                "Bypass",
                "-File",
                "${workspaceFolder}/build.ps1",
                "-Clean",
                "-Upload"
            ],
            "problemMatcher": [],
            "group": {
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}