init

cmd/read.go

@@ -0,0 +1,55 @@
+/*
+Copyright © 2020 NAME HERE <EMAIL ADDRESS>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// readCmd represents the read command
+var readCmd = &cobra.Command{
+	Use:   "read",
+	Short: "A brief description of your command",
+	Long: `A longer description that spans multiple lines and likely contains examples
+and usage of using your command. For example:
+
+Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("read called")
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(readCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// readCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// readCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}
+
+func read() {
+
+}

cmd/root.go

@@ -0,0 +1,94 @@
+/*
+Copyright © 2020 zhiqiang feng fengzhq@it2000.com.cn
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+	"os"
+
+	"github.com/spf13/viper"
+)
+
+var (
+	cfgFile string
+	device string
+	baudrate int
+	bytesize byte
+
+	// rootCmd represents the base command when called without any subcommands
+	rootCmd = &cobra.Command{
+		Use:   "tele-recv",
+		Short: "telegram receiver",
+		Long: `A serial port telegram receiver.
+Read the telegram from `,
+		// Uncomment the following line if your bare application
+		// has an action associated with it:
+		//	Run: func(cmd *cobra.Command, args []string) { },
+	}
+)
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+
+	// Here you will define your flags and configuration settings.
+	// Cobra supports persistent flags, which, if defined here,
+	// will be global for your application.
+
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (telegram.yaml)")
+	// Cobra also supports local flags, which will only run
+	// when this action is called directly.
+	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if cfgFile != "" {
+		// Use config file from the flag.
+		viper.SetConfigFile(cfgFile)
+	} else {
+		// Find home directory.
+		//home, err := os.Open(".")
+		//if err != nil {
+		//	fmt.Println(err)
+		//	os.Exit(1)
+		//}
+
+		// Search config in home directory with name ".tele-recv" (without extension).
+		viper.AddConfigPath(".")
+		viper.SetConfigName("telegram")
+	}
+
+	viper.AutomaticEnv() // read in environment variables that match
+
+
+	// If a config file is found, read it in.
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Println("Using config file:", viper.ConfigFileUsed())
+		device = viper.GetString("serial.device")
+		baudrate = viper.GetInt("serial.baudrate")
+		bytesize = byte(viper.GetInt("serial.bytesize"))
+	}
+}

cmd/test.go

@@ -0,0 +1,57 @@
+/*
+Copyright © 2020 NAME HERE <EMAIL ADDRESS>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+	"github.com/tarm/serial"
+	"os"
+)
+
+// testCmd represents the test command
+var testCmd = &cobra.Command{
+	Use:   "test",
+	Short: "Test Config",
+	Long: `Test config file.
+Test serial port`,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("test called")
+		fmt.Println("device :",device)
+		c := &serial.Config{Name: device, Baud: baudrate, Size: bytesize}
+		s, err := serial.OpenPort(c)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		fmt.Println(c , "opened")
+		_ = s.Close()
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(testCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// testCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// testCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}