forked from google/periph
/
main.go
77 lines (71 loc) · 1.64 KB
/
main.go
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// Copyright 2017 The Periph Authors. All rights reserved.
// Use of this source code is governed under the Apache License, Version 2.0
// that can be found in the LICENSE file.
// onewire-list lists all onewire buses and devices.
package main
import (
"errors"
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"periph.io/x/periph/conn/onewire"
"periph.io/x/periph/conn/onewire/onewirereg"
"periph.io/x/periph/conn/pin/pinreg"
)
func mainImpl() error {
verbose := flag.Bool("v", false, "verbose mode")
flag.Parse()
if !*verbose {
log.SetOutput(ioutil.Discard)
}
log.SetFlags(log.Lmicroseconds)
if flag.NArg() != 0 {
return errors.New("unexpected argument, try -help")
}
if _, err := hostInit(); err != nil {
return err
}
for _, ref := range onewirereg.All() {
fmt.Printf("%s", ref.Name)
if ref.Number != -1 {
fmt.Printf(" #%d", ref.Number)
}
fmt.Print(":\n")
if len(ref.Aliases) != 0 {
fmt.Printf(" Aliases:\n")
for _, a := range ref.Aliases {
fmt.Printf(" %s\n", a)
}
}
bus, err := ref.Open()
if err != nil {
fmt.Println(" Open error:", err)
continue
}
if p, ok := bus.(onewire.Pins); ok {
name, pos := pinreg.Position(p.Q())
if name != "" {
fmt.Printf(" Q: %-10s found on header %s, #%d\n", p, name, pos)
} else {
fmt.Printf(" Q: %-10s\n", p)
}
}
addresses, err := bus.Search(false)
if err != nil {
fmt.Println(" Search error:", err)
continue
}
for _, address := range addresses {
fmt.Printf(" Device address: %#016X\n", address)
}
}
return nil
}
func main() {
if err := mainImpl(); err != nil {
fmt.Fprintf(os.Stderr, "onewire-list: %s.\n", err)
os.Exit(1)
}
}