corrected all bugs

internal/devices/ultrabeam/ultrabeam.go

@@ -106,9 +106,12 @@ func (c *Client) pollLoop() {
 	ticker := time.NewTicker(2 * time.Second) // Increased from 500ms to 2s
 	defer ticker.Stop()
 
+	pollCount := 0
+
 	for {
 		select {
 		case <-ticker.C:
+			pollCount++
 
 			// Try to connect if not connected
 			c.connMu.Lock()
@@ -161,6 +164,10 @@ func (c *Client) pollLoop() {
 					status.ProgressTotal = progress[0]
 					status.ProgressCurrent = progress[1]
 				}
+			} else {
+				// Motors stopped - reset progress
+				status.ProgressTotal = 0
+				status.ProgressCurrent = 0
 			}
 
 			c.statusMu.Lock()
@@ -388,69 +395,6 @@ func (c *Client) queryStatus() (*Status, error) {
 	return status, nil
 }
 
-// queryElementLengths queries element lengths (command 9)
-func (c *Client) queryElementLengths() ([]int, error) {
-	reply, err := c.sendCommand(CMD_READ_BANDS, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	// Debug: log raw bytes
-	log.Printf("Ultrabeam element lengths raw reply (%d bytes): %v", len(reply), reply)
-
-	// Try to extract 6 words - the protocol says 6 words (12 bytes)
-	// But we're receiving 14 bytes, so there might be padding
-
-	if len(reply) < 12 {
-		return nil, fmt.Errorf("element lengths reply too short: %d bytes", len(reply))
-	}
-
-	lengths := make([]int, 6)
-
-	// Try different interpretations
-	log.Printf("=== Attempting different parsings ===")
-
-	// Method 1: Standard little-endian from byte 0
-	log.Printf("Method 1 (little-endian from 0):")
-	for i := 0; i < 6 && i*2+1 < len(reply); i++ {
-		lo := int(reply[i*2])
-		hi := int(reply[i*2+1])
-		val := lo | (hi << 8)
-		log.Printf("  Element %d: bytes[%d,%d] = [%d,%d] => %d mm", i, i*2, i*2+1, lo, hi, val)
-	}
-
-	// Method 2: Big-endian from byte 0
-	log.Printf("Method 2 (big-endian from 0):")
-	for i := 0; i < 6 && i*2+1 < len(reply); i++ {
-		hi := int(reply[i*2])
-		lo := int(reply[i*2+1])
-		val := lo | (hi << 8)
-		log.Printf("  Element %d: bytes[%d,%d] = [%d,%d] => %d mm", i, i*2, i*2+1, hi, lo, val)
-	}
-
-	// Method 3: Skip first 2 bytes, then little-endian
-	log.Printf("Method 3 (skip 2 bytes, little-endian):")
-	for i := 0; i < 6 && i*2+3 < len(reply); i++ {
-		lo := int(reply[i*2+2])
-		hi := int(reply[i*2+3])
-		val := lo | (hi << 8)
-		log.Printf("  Element %d: bytes[%d,%d] = [%d,%d] => %d mm", i, i*2+2, i*2+3, lo, hi, val)
-	}
-
-	// For now, use method 1 (original)
-	for i := 0; i < 6; i++ {
-		if i*2+1 >= len(reply) {
-			break
-		}
-		lo := int(reply[i*2])
-		hi := int(reply[i*2+1])
-		lengths[i] = lo | (hi << 8)
-	}
-
-	log.Printf("Final lengths: %v", lengths)
-	return lengths, nil
-}
-
 // queryProgress queries motor progress (command 10)
 func (c *Client) queryProgress() ([]int, error) {
 	reply, err := c.sendCommand(CMD_PROGRESS, nil)