setup ticker

cmd/rv/main.go

@@ -11,6 +11,7 @@ AUTHORS
   Jack Richardson <jack@ausocean.org>
   Trek Hopton <trek@ausocean.org>
   Scott Barnard <scott@ausocean.org>
+  Russell Stanley <russell@ausocean.org>
 
 LICENSE
   Copyright (C) 2020 the Australian Ocean Lab (AusOcean)
@@ -103,6 +104,7 @@ const (
 	profilePath      = "rv.prof"
 	pkg              = "rv: "
 	runPreDelay      = 20 * time.Second
+	turbidity
 )
 
 // Software define pin values.
@@ -122,6 +124,18 @@ type turbidityProbe struct {
 
 // TODO(Russell): complete this implementation of Write.
 func (tp *turbidityProbe) Write(p []byte) (int, error) {
+
+	ticker := time.NewTicker(500 * time.Millisecond)
+
+	go func() {
+		for {
+			select {
+			case <-ticker.C:
+
+				// Implementation here
+			}
+		}
+	}()
 	return len(p), nil
 }