protocol: update commands

protocol/main.go

@@ -12,11 +12,22 @@ var (
 	serial_device   = flag.String("serial-device", "/dev/ttyUSB0", "Serial device to use")
 	serial_baudrate = flag.Int("serial-baud", 9600, "Serial baud rate")
 
-	commands = map[string]CommandFunc{"hi": cmd_hi, "ls": cmd_ls, "cat": cmd_cat, "time": cmd_time, "bootversion": cmd_bootversion, "bootok": cmd_bootok}
+	commands = map[string]CommandFunc{
+		"hi": cmd_hi,
+		"buzzer": cmd_buzzer,
+		"led": cmd_led,
+		"reset": cmd_reset,
+		"ls": cmd_ls,
+		"cat": cmd_cat,
+		"date": cmd_date,
+		"time": cmd_time,
+		"boot_version": cmd_bootversion,
+		"boot_ok": cmd_bootok,
+	}
 )
 
-func cmd_generic(tbm *TBM, command string, args []string) error {
-	cmd := &Command{command, args}
+func cmd_generic(tbm *TBM, command string, args []string, payload []byte) error {
+	cmd := &Command{command, args, payload}
 	tbm.Commands <- cmd
 	res := <-tbm.Results
 
@@ -29,27 +40,43 @@ func cmd_generic(tbm *TBM, command string, args []string) error {
 }
 
 func cmd_hi(tbm *TBM, args []string) error {
-	return cmd_generic(tbm, "hi", []string{"v20170802 testing"})
+	return cmd_generic(tbm, "hi", []string{"v20170802 testing"}, nil)
+}
+
+func cmd_buzzer(tbm *TBM, args []string) error {
+	return cmd_generic(tbm, "buzzer", args, nil)
+}
+
+func cmd_led(tbm *TBM, args []string) error {
+	return cmd_generic(tbm, "led", args, nil)
+}
+
+func cmd_reset(tbm *TBM, args []string) error {
+	return cmd_generic(tbm, "reset", args, nil)
 }
 
 func cmd_ls(tbm *TBM, args []string) error {
-	return cmd_generic(tbm, "ls", args)
+	return cmd_generic(tbm, "ls", args, nil)
 }
 
 func cmd_cat(tbm *TBM, args []string) error {
-	return cmd_generic(tbm, "cat", args)
+	return cmd_generic(tbm, "cat", args, nil)
+}
+
+func cmd_date(tbm *TBM, args []string) error {
+	return cmd_generic(tbm, "time", args, nil)
 }
 
 func cmd_time(tbm *TBM, args []string) error {
-	return cmd_generic(tbm, "time", args)
+	return cmd_generic(tbm, "time", args, nil)
 }
 
 func cmd_bootversion(tbm *TBM, args []string) error {
-	return cmd_generic(tbm, "booting", args)
+	return cmd_generic(tbm, "booting", args, nil)
 }
 
 func cmd_bootok(tbm *TBM, args []string) error {
-	return cmd_generic(tbm, "booting", []string{"ok"})
+	return cmd_generic(tbm, "booting", []string{"ok"}, nil)
 }
 
 func main() {

protocol/tbm.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"log"
 	"strings"
+	"time"
 
 	"github.com/tarm/serial"
 )
@@ -18,6 +19,7 @@ type TBM struct {
 type Command struct {
 	command string
 	args    []string
+	payload []byte
 }
 
 type Result struct {
@@ -124,8 +126,9 @@ func handleResults(in io.Reader, c chan *Result) {
 	}
 }
 
-func serialise(out io.Writer, command string, args []string) error {
+func serialise(out io.Writer, command string, args []string, payload []byte) error {
 	var quoted_args []string
+	var err error
 
 	quoted_args = append(quoted_args, command)
 
@@ -137,20 +140,29 @@ func serialise(out io.Writer, command string, args []string) error {
 
 	output := []byte(out_string)
 	output = append(output, '\r')
-	//output = append(output, 0x4)
 
-	_, err := out.Write(output)
+	_, err = out.Write(output)
 	// err is non nil if n != len(output)
 	if err != nil {
 		return err
 	}
 
-	return nil
+	if payload == nil {
+		return nil
+	}
+
+	// FIXME: wait for command to finish
+	time.Sleep(time.Second)
+
+	output = append(payload, 0x4)
+	_, err = out.Write(output)
+
+	return err
 }
 
 func handleCommands(out io.Writer, c chan *Command) {
 	for command := range c {
-		err := serialise(out, command.command, command.args)
+		err := serialise(out, command.command, command.args, command.payload)
 		if err != nil {
 			log.Fatal(err)
 		}