mcp3008: added package and samples for mcp3008 10-bit 8-channel adc

samples/mcp3008.go

@@ -0,0 +1,33 @@
+// +build ignore
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"time"
+
+	"github.com/kidoman/embd/convertors/mcp3008"
+)
+
+func main() {
+	flag.Parse()
+	fmt.Println("This is a sample code for mcp3008 10bit 8 channel ADC")
+
+	adc, err := mcp3008.New(mcp3008.SingleMode, 0, 1000000)
+	if err != nil {
+		panic(err)
+	}
+	defer adc.Close()
+
+	for i := 0; i < 20; i++ {
+		time.Sleep(1 * time.Second)
+		val, err := adc.AnalogValueAt(0)
+		if err != nil {
+			panic(err)
+		}
+
+		fmt.Printf("Analog value is: %v\n", val)
+	}
+
+}