mirror of
https://github.com/kidoman/embd
synced 2024-05-28 14:50:07 +02:00
c35deeb17c
this ensures cleaner abstractions/code and will ensure that the produced binary is as small as possible. a convenience package is provided to easily load all hosts easily: "github.com/kidoman/embd/host/all"
57 lines
824 B
Go
57 lines
824 B
Go
// +build ignore
|
|
|
|
package main
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"os"
|
|
"os/signal"
|
|
"time"
|
|
|
|
"github.com/kidoman/embd"
|
|
"github.com/kidoman/embd/sensor/us020"
|
|
|
|
_ "github.com/kidoman/embd/host/all"
|
|
)
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
if err := embd.InitGPIO(); err != nil {
|
|
panic(err)
|
|
}
|
|
defer embd.CloseGPIO()
|
|
|
|
echoPin, err := embd.NewDigitalPin("P9_21")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
triggerPin, err := embd.NewDigitalPin("P9_22")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
rf := us020.New(echoPin, triggerPin, nil)
|
|
defer rf.Close()
|
|
|
|
quit := make(chan os.Signal, 1)
|
|
signal.Notify(quit, os.Interrupt, os.Kill)
|
|
|
|
for {
|
|
select {
|
|
default:
|
|
distance, err := rf.Distance()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Printf("Distance is %v\n", distance)
|
|
|
|
time.Sleep(500 * time.Millisecond)
|
|
case <-quit:
|
|
return
|
|
}
|
|
}
|
|
}
|