Add sunspec command for dumping model contents (evcc-io#4883)

cmd/configure.go

@@ -15,7 +15,7 @@ import (
 // configureCmd represents the configure command
 var configureCmd = &cobra.Command{
 	Use:   "configure",
-	Short: "Create an EVCC configuration",
+	Short: "Create configuration (evcc.yaml)",
 	Run:   runConfigure,
 }
 

cmd/flags.go

@@ -9,7 +9,7 @@ import (
 
 const (
 	flagSqlite            = "sqlite"
-	flagSqliteDescription = "Sqlite database file"
+	flagSqliteDescription = "SQlite database file"
 
 	flagHeaders            = "log-headers"
 	flagHeadersDescription = "Log headers"

cmd/sunspec.go

@@ -0,0 +1,102 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"text/tabwriter"
+
+	sunspec "github.com/andig/gosunspec"
+	bus "github.com/andig/gosunspec/modbus"
+	"github.com/andig/gosunspec/smdx"
+	"github.com/evcc-io/evcc/util"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/volkszaehler/mbmd/meters"
+	quirks "github.com/volkszaehler/mbmd/meters/sunspec"
+)
+
+// sunspecCmd represents the charger command
+var sunspecCmd = &cobra.Command{
+	Use:   "sunspec <connection>",
+	Short: "Dump SunSpec model information",
+	Args:  cobra.ExactArgs(1),
+	Run:   runSunspec,
+}
+
+var slaveID *int
+
+func init() {
+	rootCmd.AddCommand(sunspecCmd)
+
+	slaveID = sunspecCmd.Flags().IntP("id", "i", 1, "Slave id")
+}
+
+func pf(format string, v ...interface{}) {
+	format = strings.TrimSuffix(format, "\n") + "\n"
+	fmt.Printf(format, v...)
+}
+
+func modelName(m sunspec.Model) string {
+	model := smdx.GetModel(uint16(m.Id()))
+	if model == nil {
+		return ""
+	}
+	return model.Name
+}
+
+func runSunspec(cmd *cobra.Command, args []string) {
+	util.LogLevel(viper.GetString("log"), nil)
+
+	conn := meters.NewTCP(args[0])
+	conn.Slave(uint8(*slaveID))
+	conn.Logger(log.TRACE)
+
+	in, err := bus.Open(conn.ModbusClient())
+	if err != nil && in == nil {
+		log.FATAL.Fatal(err)
+	} else if err != nil {
+		log.WARN.Printf("warning: device opened with partial result: %v", err) // log error but continue
+	}
+
+	tw := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
+
+	in.Do(func(d sunspec.Device) {
+		d.Do(func(m sunspec.Model) {
+			pf("--------- Model %d %s ---------", m.Id(), modelName(m))
+
+			blocknum := 0
+			m.Do(func(b sunspec.Block) {
+				if blocknum > 0 {
+					fmt.Fprintf(tw, "-- Block %d --\n", blocknum)
+				}
+				blocknum++
+
+				err = b.Read()
+				if err != nil {
+					log.INFO.Printf("skipping due to read error: %v", err)
+					return
+				}
+
+				b.Do(func(p sunspec.Point) {
+					t := p.Type()[0:3]
+					v := p.Value()
+					if p.NotImplemented() {
+						v = "n/a"
+					} else if t == "int" || t == "uin" || t == "acc" {
+						// for time being, always to this
+						quirks.FixKostal(p)
+
+						v = p.ScaledValue()
+						v = fmt.Sprintf("%.2f", v)
+					}
+
+					vs := fmt.Sprintf("%17v", v)
+					fmt.Fprintf(tw, "%s\t%s\t   %s\n", p.Id(), vs, p.Type())
+				})
+			})
+
+			tw.Flush()
+		})
+	})
+}

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/BurntSushi/toml v1.2.0
 	github.com/Masterminds/sprig/v3 v3.2.2
 	github.com/PuerkitoBio/goquery v1.8.0
+	github.com/andig/gosunspec v0.0.0-20211108155140-af2e73b86e71
 	github.com/asaskevich/EventBus v0.0.0-20200907212545-49d423059eef
 	github.com/avast/retry-go/v3 v3.1.1
 	github.com/aws/aws-sdk-go v1.44.119
@@ -97,7 +98,6 @@ require (
 	cloud.google.com/go/compute v1.10.0 // indirect
 	github.com/Masterminds/goutils v1.1.1 // indirect
 	github.com/Masterminds/semver/v3 v3.1.1 // indirect
-	github.com/andig/gosunspec v0.0.0-20211108155140-af2e73b86e71 // indirect
 	github.com/andybalholm/cascadia v1.3.1 // indirect
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect