make the framework easier to begin with

samples/gpiodirect.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"time"
+
+	"github.com/kidoman/embd/gpio"
+)
+
+func main() {
+	if err := gpio.Open(); err != nil {
+		panic(err)
+	}
+	defer gpio.Close()
+
+	if err := gpio.SetDirection(10, gpio.Out); err != nil {
+		panic(err)
+	}
+	if err := gpio.DigitalWrite(10, gpio.High); err != nil {
+		panic(err)
+	}
+
+	time.Sleep(1 * time.Second)
+
+	if err := gpio.SetDirection(10, gpio.In); err != nil {
+		panic(err)
+	}
+}