fix serial

internal/util/serial/serial_other.go

@@ -0,0 +1,28 @@
+//go:build !windows && !linux
+// +build !windows,!linux
+
+package serial
+
+import (
+	"errors"
+	"time"
+)
+
+func openPort(name string, baud int, databits byte, parity Parity, stopbits StopBits, readTimeout time.Duration) (p *Port, err error) {
+	return nil, errors.New("unsupported platform")
+}
+
+type Port struct {
+}
+
+func (p *Port) Read(b []byte) (n int, err error) {
+	return
+}
+
+func (p *Port) Write(b []byte) (n int, err error) {
+	return
+}
+
+func (p *Port) Close() (err error) {
+	return
+}