Make pin undefined error more verbose

RevidCLI.go

@@ -213,9 +213,11 @@ func main() {
 }
 
 func netsenderInit() {
+	//initialize netsender and assign function to check X pins
 	netsender.InitRevidNetsender()
 	netsender.ExternalReader = revidReportActions
 
+	//try get initial config
 	if err := netsender.GetConfig(); err != nil {
 		//default to a config?????
 		config.Logger.Log("Error", err.Error())
@@ -224,6 +226,8 @@ func netsenderInit() {
 	}
 }
 
+//periodicNetsenderReport is called by the main function every monPeriod seconds. It makes sure a config has been recieved, and then 
+//reports back CPU stats and updates vars
 func periodicNetsenderReport(){
 	if !configReceived {
 		if err := netsender.GetConfig(); err != nil {
@@ -253,9 +257,11 @@ func periodicNetsenderReport(){
 	}
 }
 
+
 func updateRevid() {
 	revidInst.Stop()
 	time.Sleep( time.Duration(revidStopTime) * time.Second )
+	//look through var map and update revid where needed
 	for key, value := range vars {
 		switch key {
 			case "FramesPerClip":
@@ -357,6 +363,7 @@ func revidReportActions(pin int) (int, error) {
 	// 		return int(val), nil
 	// 	}
 
+	//function to measure temp of cpu
 	case pin == cpuTemp:
 		var out []byte
 		var err error
@@ -368,7 +375,7 @@ func revidReportActions(pin int) (int, error) {
 			return -1, errors.New("CPU Temp Read Err: " + err.Error())
 		}
 		return int(val), nil
-
+	//function to measure usage of cpu
 	case pin == cpuUsage:
 		stat, err := linuxproc.ReadStat("/proc/stat")
 		if err != nil {
@@ -398,7 +405,7 @@ func revidReportActions(pin int) (int, error) {
 	// 	return int(processManager.PriorityLevel), nil
 
 	default:
-		return -1, errors.New("External pin not defined")
+		return -1, errors.New("External pin" + pin + " not defined")
 	}
 }