upload page added + parchment properly waits for ack command

device.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"fmt"
 	"time"
 
@@ -15,6 +16,8 @@ type Device struct {
 	Connected bool
 }
 
+var commandAck = []byte{0xAA, 0x06, 0x00, 0x00, 0x00}
+
 // NewDevice creates a new Device instance.
 func NewDevice() *Device {
 	return &Device{}
@@ -51,18 +54,16 @@ func (d *Device) Connect() error {
 
 	d.Port = port
 	d.Connected = true
+	_ = d.Port.SetReadTimeout(100 * time.Millisecond)
 
 	// Send dev mode request
 	// 0xAA 0x04 0x00 0x00 0x00 is the command sequence for dev mode
-	_, err = d.Port.Write([]byte{0xAA, 0x04, 0x00, 0x00, 0x00})
+	err = d.sendCommand([]byte{0xAA, 0x04, 0x00, 0x00, 0x00})
 	if err != nil {
 		d.Close()
-		return fmt.Errorf("failed to send dev mode request: %w", err)
+		return fmt.Errorf("failed to enter dev mode: %w", err)
 	}
 
-	// Allow some time for the device to respond or settle if needed
-	time.Sleep(100 * time.Millisecond)
-
 	return nil
 }
 
@@ -73,14 +74,10 @@ func (d *Device) ExitDevMode() error {
 	}
 
 	// disable dev mode
-	_, err := d.Port.Write([]byte{0xAA, 0x05, 0x00, 0x00, 0x00})
+	if err := d.sendCommand([]byte{0xAA, 0x05, 0x00, 0x00, 0x00}); err != nil {
-	if err != nil {
+		return fmt.Errorf("failed to exit dev mode: %w", err)
-		return fmt.Errorf("failed to send exit dev mode command: %w", err)
 	}
 
-	// Allow some time for the device to respond or settle if needed
-	time.Sleep(100 * time.Millisecond)
-
 	return nil
 }
 
@@ -108,3 +105,57 @@ func (d *Device) Write(data []byte) (int, error) {
 	}
 	return d.Port.Write(data)
 }
+
+func (d *Device) sendCommand(cmd []byte) error {
+	if d.Port == nil {
+		return fmt.Errorf("port not open")
+	}
+	if _, err := d.Port.Write(cmd); err != nil {
+		return fmt.Errorf("failed to send command: %w", err)
+	}
+	if err := d.waitForResponse(commandAck, 2*time.Second); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (d *Device) waitForResponse(expected []byte, timeout time.Duration) error {
+	if d.Port == nil {
+		return fmt.Errorf("port not open")
+	}
+	if len(expected) == 0 {
+		return fmt.Errorf("expected response is empty")
+	}
+
+	deadline := time.NewTimer(timeout)
+	defer deadline.Stop()
+
+	readBuf := make([]byte, 64)
+	window := make([]byte, 0, len(expected)*4)
+	maxWindow := len(expected) * 4
+	if maxWindow < 64 {
+		maxWindow = 64
+	}
+
+	for {
+		select {
+		case <-deadline.C:
+			return fmt.Errorf("timeout waiting for response %x", expected)
+		default:
+			n, err := d.Port.Read(readBuf)
+			if err != nil {
+				return fmt.Errorf("failed while waiting for response: %w", err)
+			}
+			if n == 0 {
+				continue
+			}
+			window = append(window, readBuf[:n]...)
+			if len(window) > maxWindow {
+				window = window[len(window)-maxWindow:]
+			}
+			if bytes.Contains(window, expected) {
+				return nil
+			}
+		}
+	}
+}

main.go

@@ -35,6 +35,7 @@ func MonitorDevice(ctx context.Context, app *tview.Application, frame **tview.Fr
 					err = device.Connect()
 					if err != nil {
 						UpdateDeviceStatus(app, *frame, state, "Error connecting to cardputer: "+err.Error(), tcell.ColorRed)
+						SetError(state, err.Error())
 					} else {
 						UpdateDeviceStatus(app, *frame, state, "Connected to cardputer: "+port, tcell.ColorGreen)
 						if state.Error == "Cardputer disconnected" {
@@ -69,7 +70,7 @@ func main() {
 		Page:  "home",
 		Error: "",
 	}
-	frame := AppUI(app, &currentFrame, state)
+	frame := AppUI(app, &currentFrame, state, device)
 	currentFrame = frame
 	app.SetRoot(frame, true)
 

tui.go

@@ -4,6 +4,7 @@ import (
 	"os"
 
 	"github.com/gdamore/tcell/v2"
+	"github.com/navidys/tvxwidgets"
 	"github.com/rivo/tview"
 )
 
@@ -13,15 +14,26 @@ type UIState struct {
 	Success string
 }
 
-func AppUI(app *tview.Application, currentFrame **tview.Frame, state *UIState) *tview.Frame {
+func AppUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
 	list := tview.NewList()
 	list.AddItem("CPkg Tools", "Create and unpack cpkg files for distribution", 'c', func() {
-		newFrame := PackageUI(app, currentFrame, state)
+		newFrame := PackageUI(app, currentFrame, state, device)
 		*currentFrame = newFrame
 		state.Page = "package"
 		app.SetRoot(newFrame, true)
 	})
-	list.AddItem("Upload to Cardputer", "Creates a package and uploads it to the connected Cardputer", 'u', nil)
+	list.AddItem("Upload to Cardputer", "Creates a package and uploads it to the connected Cardputer", 'u', func() {
+		if !device.Connected {
+			SetError(state, "No cardputer connected")
+			return
+		} else {
+			SetSuccess(state, "Upload started")
+		}
+		newFrame := UploadUI(app, currentFrame, state, device)
+		*currentFrame = newFrame
+		state.Page = "upload"
+		app.SetRoot(newFrame, true)
+	})
 	list.AddItem("Live Refresh", "Monitors for changes and automatically uploads to the Cardputer (WIP)", 'l', nil)
 	frame := tview.NewFrame(list)
 	frame.SetBorders(0, 0, 0, 0, 0, 0)
@@ -41,7 +53,19 @@ func SetSuccess(state *UIState, text string) {
 	state.Success = text
 }
 
-func PackageUI(app *tview.Application, currentFrame **tview.Frame, state *UIState) *tview.Frame {
+func UploadUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
+	list := tview.NewFlex()
+	list.SetDirection(tview.FlexRow)
+	progress := tvxwidgets.NewPercentageModeGauge()
+	progress.SetValue(0)
+	progress.SetMaxValue(100)
+	progress.SetBorder(true)
+	progress.SetTitle("Upload Progress")
+	list.AddItem(progress, 0, 1, false)
+	return tview.NewFrame(list)
+}
+
+func PackageUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
 	list := tview.NewList()
 	list.AddItem("Create Package", "Creates a .cpkg file in the running directory", 'c', func() {
 		fsys := os.DirFS(".")
@@ -63,7 +87,7 @@ func PackageUI(app *tview.Application, currentFrame **tview.Frame, state *UIStat
 	})
 	list.AddItem("Unpack Package", "Unpacks a chosen .cpkg file into a subdirectory", 'u', nil)
 	list.AddItem("Back", "Go back to the home page", 'b', func() {
-		newFrame := AppUI(app, currentFrame, state)
+		newFrame := AppUI(app, currentFrame, state, device)
 		*currentFrame = newFrame
 		state.Page = "home"
 		app.SetRoot(newFrame, true)
@@ -83,6 +107,8 @@ func UpdateDeviceStatus(app *tview.Application, frame *tview.Frame, state *UISta
 			frame.AddText("Parchment - v0.0.1", true, tview.AlignLeft, tcell.ColorWhite)
 		case "package":
 			frame.AddText("Package Tools", true, tview.AlignLeft, tcell.ColorWhite)
+		case "upload":
+			frame.AddText("Uploading to Cardputer - Do not disconnect the cardputer until the upload is complete", true, tview.AlignLeft, tcell.ColorWhite)
 		}
 		if state.Error != "" {
 			frame.AddText(state.Error, false, tview.AlignRight, tcell.ColorRed)