diff --git a/.gitignore b/.gitignore
index 9ed3b07..3fc793c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 *.test
+intelhex/intelhex
\ No newline at end of file
diff --git a/intelhex/README.md b/intelhex/README.md
new file mode 100644
index 0000000..eebd80a
--- /dev/null
+++ b/intelhex/README.md
@@ -0,0 +1,27 @@
+# IntelHex
+
+Decode Intel Hex file, encode data in Intel Hex format. Hex files are use to programm eeprom or microcontroller
+
+## Usage
+
+  intelhex [command]
+
+Available Commands:
+
+  * read        Read data from hex file
+  * write       Write data from binary file
+
+
+### Read
+  intelhex read "path" [flags]
+
+Flags:
+
+      --binary   display binary
+
+### Write
+  intelhex write "path" [flags]
+
+Flags:
+
+      --immediate   immediate string in encoded
diff --git a/intelhex/main.go b/intelhex/main.go
new file mode 100644
index 0000000..eda0481
--- /dev/null
+++ b/intelhex/main.go
@@ -0,0 +1,44 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+
+	"github.com/mash/go-intelhex/intelhex/reader"
+	"github.com/mash/go-intelhex/intelhex/writer"
+)
+
+/* Main Command to parse
+   command line */
+var mainCommand = &cobra.Command{
+	Use:   "intelhex",
+	Short: "Intel hex parser / encoder",
+	Long:  "Parse or encode data to intel HEX",
+	Run: func(cmd *cobra.Command, args []string) {
+		viper.AutomaticEnv()
+		// Application statup here
+		err := mainApp()
+		if err != nil {
+			fmt.Println(err)
+		}
+	},
+}
+
+/**
+ * The Main application really starts here
+ */
+func mainApp() (err error) {
+
+	return nil
+}
+
+func main() {
+	mainCommand.Execute()
+}
+
+func init() {
+	mainCommand.AddCommand(reader.MainCmd)
+	mainCommand.AddCommand(writer.MainCmd)
+}
diff --git a/intelhex/reader/reader.go b/intelhex/reader/reader.go
new file mode 100644
index 0000000..abf23b9
--- /dev/null
+++ b/intelhex/reader/reader.go
@@ -0,0 +1,61 @@
+package reader
+
+import (
+	"encoding/hex"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/mash/go-intelhex"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+func init() {
+	flags := MainCmd.Flags()
+
+	flags.Bool("binary", false, "display binary")
+	viper.BindPFlag("binary", flags.Lookup("binary"))
+}
+
+// MainCmd is the main command manager
+var MainCmd = &cobra.Command{
+	Use:   "read <path>",
+	Short: "Read data from hex file",
+	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			log.Fatal("Missing file")
+		}
+
+		hexFile, err := os.Open(args[0])
+
+		if err != nil {
+			log.Fatal(err) //log.Fatal run an os.Exit
+		}
+		defer hexFile.Close()
+
+		bytes, err := ioutil.ReadAll(hexFile)
+		if err != nil {
+			log.Fatal(err) //log.Fatal run an os.Exit
+		}
+
+		_, records := intelhex.ParseString(string(bytes))
+		for record := range records {
+			if viper.GetBool("binary") {
+				src := strings.ToLower(record.Data)
+				dst, err := hex.DecodeString(src)
+				if err != nil {
+					log.Fatal(err)
+				}
+
+				fmt.Printf("%s", dst)
+			} else {
+				fmt.Printf("%s\n", record.Data)
+			}
+
+		}
+
+	},
+}
diff --git a/intelhex/writer/writer.go b/intelhex/writer/writer.go
new file mode 100644
index 0000000..418f92d
--- /dev/null
+++ b/intelhex/writer/writer.go
@@ -0,0 +1,83 @@
+package writer
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"encoding/hex"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/mash/go-intelhex"
+)
+
+func init() {
+	flags := MainCmd.Flags()
+
+	flags.Bool("immediate", false, "immediate string is encoded")
+	viper.BindPFlag("immediate", flags.Lookup("immediate"))
+}
+
+// MainCmd is the main command manager
+var MainCmd = &cobra.Command{
+	Use:   "write <path>",
+	Short: "Write data from binary file",
+	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			log.Fatal("Missing file/immediate")
+		}
+
+        if viper.GetBool("immediate") {
+			str := args[0]
+
+			strB := []byte(str)
+			encodedStr := hex.EncodeToString(strB)
+
+			record := intelhex.Record{
+				ByteCount : int64(len(str)),
+				Address   : int64(0),
+				Type      : intelhex.RecordTypeData,
+				Data      : strings.ToUpper(encodedStr),
+			}
+
+			fmt.Printf("%s:00000001FF\n", string(record.Format(16)))
+
+        } else {
+            binFile, err := os.Open(args[0])
+
+            if err != nil {
+                log.Fatal(err) //log.Fatal run an os.Exit
+            }
+            defer binFile.Close()
+
+			stats, statsErr := binFile.Stat()
+			if statsErr != nil {
+				log.Fatal("Cannot read file")
+			}
+
+			var size int64 = stats.Size()
+			bytes := make([]byte, size)
+
+			bufr := bufio.NewReader(binFile)
+			_,err = bufr.Read(bytes)
+			if err != nil {
+                log.Fatal(err) //log.Fatal run an os.Exit
+            }
+
+			encodedStr := hex.EncodeToString(bytes)
+
+			record := intelhex.Record{
+				ByteCount : int64(size),
+				Address   : int64(0),
+				Type      : intelhex.RecordTypeData,
+				Data      : strings.ToUpper(encodedStr),
+			}
+
+			fmt.Printf("%s:00000001FF\n", string(record.Format(16)))
+
+        }
+
+	},
+}