Go modules support (#1)

* Convert to go modules

* update imports in test subpackage to use fork

* checkpoint

go.mod

@@ -0,0 +1,5 @@
+module github.com/crossnokaye/modbus
+
+go 1.15
+
+require github.com/goburrow/serial v0.1.0

go.sum

@@ -0,0 +1,2 @@
+github.com/goburrow/serial v0.1.0 h1:v2T1SQa/dlUqQiYIT8+Cu7YolfqAi3K96UmhwYyuSrA=
+github.com/goburrow/serial v0.1.0/go.mod h1:sAiqG0nRVswsm1C97xsttiYCzSLBmUZ/VSlVLZJ8haA=

test/README.md

@@ -1,4 +1,4 @@
-System testing for [modbus library](https://github.com/goburrow/modbus)
+System testing for [modbus library](https://github.com/crossnokaye/modbus)
 
 Modbus simulator
 ----------------

test/asciiclient_test.go

@@ -9,7 +9,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/goburrow/modbus"
+	"github.com/crossnokaye/modbus"
 )
 
 const (

test/client.go

@@ -7,7 +7,7 @@ package test
 import (
 	"testing"
 
-	"github.com/goburrow/modbus"
+	"github.com/crossnokaye/modbus"
 )
 
 func ClientTestReadCoils(t *testing.T, client modbus.Client) {
@@ -67,7 +67,7 @@ func ClientTestWriteSingleCoil(t *testing.T, client modbus.Client) {
 
 func ClientTestWriteSingleRegister(t *testing.T, client modbus.Client) {
 	// Write register 2 to 00 03 hex
-	address := uint16(0x0001)
+	address := uint32(0x0001)
 	value := uint16(0x0003)
 	results, err := client.WriteSingleRegister(address, value)
 	if err != nil {

test/rtuclient_test.go

@@ -9,7 +9,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/goburrow/modbus"
+	"github.com/crossnokaye/modbus"
 )
 
 const (

test/tcpclient_test.go

@@ -10,20 +10,20 @@ import (
 	"testing"
 	"time"
 
-	"github.com/goburrow/modbus"
+	"github.com/crossnokaye/modbus"
 )
 
 const (
 	tcpDevice = "localhost:5020"
 )
 
 func TestTCPClient(t *testing.T) {
-	client := modbus.TCPClient(tcpDevice)
+	client := modbus.TCPClient(tcpDevice, time.Second, time.Second)
 	ClientTestAll(t, client)
 }
 
 func TestTCPClientAdvancedUsage(t *testing.T) {
-	handler := modbus.NewTCPClientHandler(tcpDevice)
+	handler := modbus.NewTCPClientHandler(tcpDevice, time.Second, time.Second)
 	handler.Timeout = 5 * time.Second
 	handler.SlaveId = 1
 	handler.Logger = log.New(os.Stdout, "tcp: ", log.LstdFlags)