From e9c1929e1aab07c798f20d079cf3a77081a0771e Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sun, 20 Nov 2016 09:45:54 +0100
Subject: test implemented first command method


diff --git a/src/pira32ctl/command.go b/src/pira32ctl/command.go
index 5a8e860..390cb40 100644
--- a/src/pira32ctl/command.go
+++ b/src/pira32ctl/command.go
@@ -22,6 +22,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -29,14 +30,24 @@ import (
 )
 
 const (
-	REQ_PERSISTANT = '*'
+	REQ_PERSISTANT = "*"
 
-	RESP_OK          = '+'
-	RESP_UNKNOWN_CMD = '!'
-	RESP_INVALID_ARG = '-'
-	RESP_PARTIAL     = '/'
+	RESP_OK          = "+"
+	RESP_UNKNOWN_CMD = "!"
+	RESP_INVALID_ARG = "-"
+	RESP_PARTIAL     = "/"
 
 	storeExecutionTime = 10 * time.Millisecond
+
+	respTimeout = 500 * time.Millisecond
+)
+
+var (
+	ErrInvalidResp = errors.New("got invalid response")
+	ErrTimeout     = errors.New("timeout")
+	ErrUnknownCmd  = errors.New("unknown command")
+	ErrInvalidArg  = errors.New("invalid argument")
+	ErrPartial     = errors.New("partial success")
 )
 
 type Command interface {
@@ -81,8 +92,25 @@ func (c BasicCommand) Store(port *goserial.Port, params ...interface{}) error {
 	if len(params) != 0 {
 		return fmt.Errorf("this command takes no arguments")
 	}
-	// TODO: implement this
-	return nil
+	port.TX <- REQ_PERSISTANT + c.code
+	t := time.NewTimer(respTimeout)
+	var resp string
+	select {
+	case resp = <-port.RX:
+	case <-t.C:
+		return ErrTimeout
+	}
+	switch resp {
+	case RESP_OK:
+		return nil
+	case RESP_UNKNOWN_CMD:
+		return ErrUnknownCmd
+	case RESP_INVALID_ARG:
+		return ErrUnknownCmd
+	case RESP_PARTIAL:
+		return ErrUnknownCmd
+	}
+	return ErrInvalidResp
 }
 
 func (c BasicCommand) AssignStore(port *goserial.Port, params ...interface{}) error {
-- 
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