From df0edecd6ca4a38195849cc450430155ad308eaf Mon Sep 17 00:00:00 2001
From: Stian Eikeland <stian@eikeland.se>
Date: Tue, 30 Jul 2013 16:31:28 +0200
Subject: [PATCH] Added example program: blinker.go

---
 examples/blinker/blinker.go | 43 +++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 examples/blinker/blinker.go

diff --git a/examples/blinker/blinker.go b/examples/blinker/blinker.go
new file mode 100644
index 0000000..8792b88
--- /dev/null
+++ b/examples/blinker/blinker.go
@@ -0,0 +1,43 @@
+/*
+
+A blinker example using go-rpio library.
+Requires administrator rights to run
+
+Toggles a LED on physical pin 19 (mcu pin 10)
+Connect a LED with resistor from pin 19 to ground.
+
+*/
+
+package main
+
+import (
+	"fmt"
+	"github.com/stianeikeland/go-rpio"
+	"os"
+	"time"
+)
+
+var (
+	// Use mcu pin 10, corresponds to physical pin 19 on the pi
+	pin = rpio.Pin(10)
+)
+
+func main() {
+	// Open and map memory to access gpio, check for errors
+	if err := rpio.Open(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	// Unmap gpio memory when done
+	defer rpio.Close()
+
+	// Set pin to output mode
+	pin.Output()
+
+	// Toggle pin 20 times
+	for x := 0; x < 20; x++ {
+		pin.Toggle()
+		time.Sleep(time.Second / 5)
+	}
+}