Initial Commit

cmd/itctl/cmd/address.go

@@ -0,0 +1,87 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net"
+
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// addressCmd represents the address command
+var addressCmd = &cobra.Command{
+	Use:     "address",
+	Aliases: []string{"addr"},
+	Short:   "Get InfiniTime's bluetooth address",
+	Run: func(cmd *cobra.Command, args []string) {
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		// Encode request into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeBtAddress,
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Read one line from connection
+		line, _, err := bufio.NewReader(conn).ReadLine()
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error reading line from connection")
+		}
+
+		var res types.Response
+		// Decode line into response
+		err = json.Unmarshal(line, &res)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error decoding JSON data")
+		}
+
+		if res.Error {
+			log.Fatal().Msg(res.Message)
+		}
+
+		// Print returned value
+		fmt.Println(res.Value)
+	},
+}
+
+func init() {
+	getCmd.AddCommand(addressCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// addressCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// addressCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}

cmd/itctl/cmd/battery.go

@@ -0,0 +1,77 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net"
+
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// batteryCmd represents the batt command
+var batteryCmd = &cobra.Command{
+	Use:     "battery",
+	Aliases: []string{"batt"},
+	Short:   "Get battery level from InfiniTime",
+	Run: func(cmd *cobra.Command, args []string) {
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		// Encode request into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeBattLevel,
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Read one line from connection
+		line, _, err := bufio.NewReader(conn).ReadLine()
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error reading line from connection")
+		}
+
+		var res types.Response
+		// Deocde line into response
+		err = json.Unmarshal(line, &res)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error decoding JSON data")
+		}
+
+		if res.Error {
+			log.Fatal().Msg(res.Message)
+		}
+
+		// Print returned percentage
+		fmt.Printf("%d%%\n", int(res.Value.(float64)))
+	},
+}
+
+func init() {
+	getCmd.AddCommand(batteryCmd)
+}

cmd/itctl/cmd/common.go

@@ -0,0 +1,41 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+const SockPath = "/tmp/itd/socket"
+
+const (
+	ReqTypeHeartRate = "hrt"
+	ReqTypeBattLevel = "battlvl"
+	ReqTypeFwVersion = "fwver"
+	ReqTypeFwUpgrade = "fwupg"
+	ReqTypeBtAddress = "btaddr"
+	ReqTypeNotify    = "notify"
+	ReqTypeSetTime   = "settime"
+)
+
+const (
+	UpgradeTypeArchive = iota
+	UpgradeTypeFiles
+)
+
+type DFUProgress struct {
+	Received int64 `mapstructure:"recvd"`
+	Total    int64 `mapstructure:"total"`
+}

cmd/itctl/cmd/firmware.go

@@ -0,0 +1,34 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// firmwareCmd represents the firmware command
+var firmwareCmd = &cobra.Command{
+	Use:     "firmware",
+	Short:   "Manage InfiniTime firmware",
+	Aliases: []string{"fw"},
+}
+
+func init() {
+	rootCmd.AddCommand(firmwareCmd)
+}

cmd/itctl/cmd/get.go

@@ -0,0 +1,33 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// getCmd represents the get command
+var getCmd = &cobra.Command{
+	Use:   "get",
+	Short: "Get information from InfiniTime",
+}
+
+func init() {
+	rootCmd.AddCommand(getCmd)
+}

cmd/itctl/cmd/heart.go

@@ -0,0 +1,76 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net"
+
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// heartCmd represents the heart command
+var heartCmd = &cobra.Command{
+	Use:   "heart",
+	Short: "Get heart rate from InfiniTime",
+	Run: func(cmd *cobra.Command, args []string) {
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		// Encode request into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeHeartRate,
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Read one line from connection
+		line, _, err := bufio.NewReader(conn).ReadLine()
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error reading line from connection")
+		}
+
+		var res types.Response
+		// Decode line into response
+		err = json.Unmarshal(line, &res)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error decoding JSON data")
+		}
+
+		if res.Error {
+			log.Fatal().Msg(res.Message)
+		}
+
+		// Print returned BPM
+		fmt.Printf("%d BPM\n", int(res.Value.(float64)))
+	},
+}
+
+func init() {
+	getCmd.AddCommand(heartCmd)
+}

cmd/itctl/cmd/notify.go

@@ -0,0 +1,82 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"net"
+
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// notifyCmd represents the notify command
+var notifyCmd = &cobra.Command{
+	Use:   "notify <title> <body>",
+	Short: "Send notification to InfiniTime",
+	Run: func(cmd *cobra.Command, args []string) {
+		// Ensure required arguments
+		if len(args) != 2 {
+			cmd.Usage()
+			log.Fatal().Msg("Command notify requires two arguments")
+		}
+
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		// Encode request into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeNotify,
+			Data: types.ReqDataNotify{
+				Title: args[0],
+				Body:  args[1],
+			},
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Read one line from connection
+		line, _, err := bufio.NewReader(conn).ReadLine()
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error reading line from connection")
+		}
+
+		var res types.Response
+		// Decode line into response
+		err = json.Unmarshal(line, &res)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error decoding JSON data")
+		}
+
+		if res.Error {
+			log.Fatal().Msg(res.Message)
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(notifyCmd)
+}

cmd/itctl/cmd/root.go

@@ -0,0 +1,35 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+	Use:   "itctl",
+	Short: "Control the itd daemon for InfiniTime smartwatches",
+}
+
+// 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() {
+	cobra.CheckErr(rootCmd.Execute())
+}

cmd/itctl/cmd/set.go

@@ -0,0 +1,33 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+// setCmd represents the set command
+var setCmd = &cobra.Command{
+	Use:   "set",
+	Short: "Set information on InfiniTime",
+}
+
+func init() {
+	rootCmd.AddCommand(setCmd)
+}

cmd/itctl/cmd/time.go

@@ -0,0 +1,79 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"net"
+
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// timeCmd represents the time command
+var timeCmd = &cobra.Command{
+	Use:   `time <ISO8601|"now">`,
+	Short: "Set InfiniTime's clock to specified time",
+	Run: func(cmd *cobra.Command, args []string) {
+		// Ensure required arguments
+		if len(args) != 1 {
+			cmd.Usage()
+			log.Fatal().Msg("Command time requires one argument")
+		}
+
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		// Encode request into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeSetTime,
+			Data: args[0],
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Read one line from connetion
+		line, _, err := bufio.NewReader(conn).ReadLine()
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error reading line from connection")
+		}
+
+		var res types.Response
+		// Decode line into response
+		err = json.Unmarshal(line, &res)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error decoding JSON data")
+		}
+
+		if res.Error {
+			log.Fatal().Msg(res.Message)
+		}
+	},
+}
+
+func init() {
+	setCmd.AddCommand(timeCmd)
+}

cmd/itctl/cmd/upgrade.go

@@ -0,0 +1,126 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"net"
+
+	"github.com/cheggaaa/pb/v3"
+	"github.com/mitchellh/mapstructure"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// upgradeCmd represents the upgrade command
+var upgradeCmd = &cobra.Command{
+	Use:     "upgrade",
+	Short:   "Upgrade InfiniTime firmware using files or archive",
+	Aliases: []string{"upg"},
+	Run: func(cmd *cobra.Command, args []string) {
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		var data types.ReqDataFwUpgrade
+		// Get relevant data struct
+		if viper.GetString("archive") != "" {
+			// Get archive data struct
+			data = types.ReqDataFwUpgrade{
+				Type:  UpgradeTypeArchive,
+				Files: []string{viper.GetString("archive")},
+			}
+		} else if viper.GetString("initPkt") != "" && viper.GetString("firmware") != "" {
+			// Get files data struct
+			data = types.ReqDataFwUpgrade{
+				Type:  UpgradeTypeFiles,
+				Files: []string{viper.GetString("initPkt"), viper.GetString("firmware")},
+			}
+		} else {
+			cmd.Usage()
+			log.Fatal().Msg("Upgrade command requires either archive or init packet and firmware.")
+		}
+
+		// Encode response into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeFwUpgrade,
+			Data: data,
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Create progress bar template
+		barTmpl := `{{counters . }} B {{bar . "|" "-" (cycle .) " " "|"}} {{percent . }} {{rtime . "%s"}}`
+		// Start full bar at 0 total
+		bar := pb.ProgressBarTemplate(barTmpl).Start(0)
+		// Create new scanner of connection
+		scanner := bufio.NewScanner(conn)
+		for scanner.Scan() {
+			var res types.Response
+			// Decode scanned line into response struct
+			err = json.Unmarshal(scanner.Bytes(), &res)
+			if err != nil {
+				log.Fatal().Err(err).Msg("Error decoding JSON response")
+			}
+			if res.Error {
+				log.Fatal().Msg(res.Message)
+			}
+			var event DFUProgress
+			// Decode response data into progress struct
+			err = mapstructure.Decode(res.Value, &event)
+			if err != nil {
+				log.Fatal().Err(err).Msg("Error decoding response data")
+			}
+			// If transfer finished, break
+			if event.Received == event.Total {
+				break
+			}
+			// Set total bytes in progress bar
+			bar.SetTotal(event.Total)
+			// Set amount of bytes received in progress bar
+			bar.SetCurrent(event.Received)
+		}
+		// Finish progress bar
+		bar.Finish()
+		if scanner.Err() != nil {
+			log.Fatal().Err(scanner.Err()).Msg("Error while scanning output")
+		}
+	},
+}
+
+func init() {
+	firmwareCmd.AddCommand(upgradeCmd)
+
+	// Register flags
+	upgradeCmd.Flags().StringP("archive", "a", "", "Path to firmware archive")
+	upgradeCmd.Flags().StringP("init-pkt", "i", "", "Path to init packet (.dat file)")
+	upgradeCmd.Flags().StringP("firmware", "f", "", "Path to firmware image (.bin file)")
+
+	// Bind flags to viper keys
+	viper.BindPFlag("archive", upgradeCmd.Flags().Lookup("archive"))
+	viper.BindPFlag("initPkt", upgradeCmd.Flags().Lookup("init-pkt"))
+	viper.BindPFlag("firmware", upgradeCmd.Flags().Lookup("firmware"))
+}

cmd/itctl/cmd/version.go

@@ -0,0 +1,77 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package cmd
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net"
+
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"go.arsenm.dev/itd/internal/types"
+)
+
+// versionCmd represents the version command
+var versionCmd = &cobra.Command{
+	Use:     "version",
+	Aliases: []string{"ver"},
+	Short:   "Get firmware version of InfiniTime",
+	Run: func(cmd *cobra.Command, args []string) {
+		// Connect to itd UNIX socket
+		conn, err := net.Dial("unix", SockPath)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error dialing socket. Is itd running?")
+		}
+		defer conn.Close()
+
+		// Encode request into connection
+		err = json.NewEncoder(conn).Encode(types.Request{
+			Type: ReqTypeFwVersion,
+		})
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error making request")
+		}
+
+		// Read one line from connection
+		line, _, err := bufio.NewReader(conn).ReadLine()
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error reading line from connection")
+		}
+
+		var res types.Response
+		// Decode line into response
+		err = json.Unmarshal(line, &res)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error decoding JSON data")
+		}
+
+		if res.Error {
+			log.Fatal().Msg(res.Message)
+		}
+
+		// Print returned value
+		fmt.Println(res.Value)
+	},
+}
+
+func init() {
+	firmwareCmd.AddCommand(versionCmd)
+}

cmd/itctl/main.go

@@ -0,0 +1,36 @@
+/*
+ *	itd uses bluetooth low energy to communicate with InfiniTime devices
+ *	Copyright (C) 2021 Arsen Musayelyan
+ *
+ *	This program is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package main
+
+import (
+	"os"
+
+	"go.arsenm.dev/itd/cmd/itctl/cmd"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func init() {
+	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
+}
+
+func main() {
+	cmd.Execute()
+}