fix: rebuild MES as compilable go-zero+ent backend (renamed bj_power_mes), restore 3 workstation projects from pristine original, align naming; all Go projects go build clean

bj_power_mes/internal/robot/scanner.go

@@ -0,0 +1,57 @@
+package robot
+
+import (
+	"context"
+	"strings"
+
+	"bj_power_mes/internal/plc"
+	"bj_power_mes/internal/preload"
+)
+
+// StartScanCode 启动扫码
+// workpieceType 工件类型
+// round 扫码轮次
+func (c *Controller) StartScanCode(ctx context.Context, workpieceType int, round int) error {
+	return c.executeAction(ctx, "StartScanCode",
+		newArg(int8(workpieceType)),
+		newArg(int8(round)),
+		newArg(int16(round)),
+		newArg(int32(0)),
+	)
+}
+
+// ReadScanCodeData 读取扫码数据
+// 返回PLC中32字节的扫码内容，按ASCII字符串解释；读取失败返回错误
+func (m *Manager) ReadScanCodeData(ctx context.Context) (string, error) {
+	pc := m.plcManager.GetPlc()
+	if pc == nil {
+		return "", plc.ErrNotConnect
+	}
+
+	addr := preload.GetMAddress("ScanCodeData")
+	bs, err := pc.Read(addr.Address(), 32)
+	if err != nil {
+		return "", err
+	}
+	// 去除尾部的\x00
+	i := len(bs)
+	for i > 0 && bs[i-1] == 0 {
+		i--
+	}
+	result := string(bs[:i])
+	return strings.TrimSpace(result), nil
+}
+
+// ClearScanCodeData 清除扫码数据
+func (m *Manager) ClearScanCodeData(ctx context.Context) error {
+	pc := m.plcManager.GetPlc()
+	if pc == nil {
+		return plc.ErrNotConnect
+	}
+
+	addr := preload.GetMAddress("ScanCodeData")
+	if err := pc.Write(addr.Address(), make([]byte, 32)); err != nil {
+		return err
+	}
+	return nil
+}