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继电器、读卡器，都用统一的modbus协议

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This commit is contained in:
mapleafgo
2024-12-12 10:30:21 +08:00
parent 25cb34f6f5
commit df9dbb0926
15 changed files with 142 additions and 127 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
config.yml
View File

@@ -1,6 +1,6 @@
location: wushan
point: 5
relay: COM7
relay: /dev/ttyUSB0
maxTimeout: 60 # 单位 s，必须大于 0
log:
level: debug
@@ -19,7 +19,7 @@ aliyun:
timeout: 10 # 单位 s
voice: zhifeng_emo
game:
url: rtu:///dev/ttyUSB0 # 点位 5 的串口地址
addr: /dev/ttyUSB0 # 点位 5 的串口地址
# pushGroups: # 点位 4 的发卡器配置
# - name: gpiochip0
# outOK: 6
@@ -29,4 +29,4 @@ game:
# push: 11
# reset: 22
# pull: 27
# readUrl: rtu:///dev/ttyUSB0 # 点位 4 的读卡器配置
# readAddr: /dev/ttyUSB0 # 点位 4 的读卡器配置

2
config/game/push_card.go
View File

@@ -4,5 +4,5 @@ import "game-driver/internal/routes/play/card_pusher"
type ConfigPush struct {
PushGroups []*card_pusher.LineGroup
ReadURL string
ReadAddr string
}

2
config/game/wait_card.go
View File

@@ -1,5 +1,5 @@
package game
type ConfigWait struct {
URL string
Addr string
}

2
demo/modbus2/main.go
View File

@@ -15,7 +15,7 @@ func main() {
logger.DefaultLogger()
defer logger.Sync()
reader, err := card_reader.NewReader("rtu:///dev/ttyUSB0")
reader, err := card_reader.NewReader("/dev/ttyUSB0")
if err != nil {
zap.S().Panicln(err)
}

31
demo/relay/main.go Normal file
View File

@@ -0,0 +1,31 @@
package main
import (
"game-driver/logger"
"game-driver/pkg/relay"
"go.uber.org/zap"
"os"
"os/signal"
"syscall"
)
func main() {
logger.DefaultLogger()
defer logger.Sync()
r, err := relay.New("/dev/ttyUSB0")
if err != nil {
zap.S().Panicln(err)
}
defer r.Close()
r.On(0)
defer r.Off(0)
sig := make(chan os.Signal, 1)
signal.Notify(sig, os.Interrupt, syscall.SIGTERM)
<-sig
zap.S().Infoln("接收到关闭命令 - 正在关闭程序")
zap.S().Infoln("关闭完成")
}

5
go.mod
View File

@@ -6,22 +6,21 @@ require (
github.com/aliyun/alibabacloud-nls-go-sdk v1.1.1
github.com/eclipse/paho.golang v0.22.0
github.com/gopxl/beep/v2 v2.1.0
github.com/munnik/modbus v1.6.6
github.com/grid-x/modbus v0.0.0-20241004123532-f6c6fb5201b3
github.com/spf13/cobra v1.8.1
github.com/spf13/viper v1.19.0
github.com/warthog618/go-gpiocdev v0.9.1
go.bug.st/serial v1.6.2
go.uber.org/zap v1.27.0
gopkg.in/natefinch/lumberjack.v2 v2.2.1
)
require (
github.com/aliyun/alibaba-cloud-sdk-go v1.63.53 // indirect
github.com/creack/goselect v0.1.2 // indirect
github.com/ebitengine/oto/v3 v3.3.1 // indirect
github.com/ebitengine/purego v0.8.1 // indirect
github.com/fsnotify/fsnotify v1.8.0 // indirect
github.com/gorilla/websocket v1.5.3 // indirect
github.com/grid-x/serial v0.0.0-20211107191517-583c7356b3aa // indirect
github.com/hajimehoshi/go-mp3 v0.3.4 // indirect
github.com/hashicorp/hcl v1.0.0 // indirect
github.com/inconshreveable/mousetrap v1.1.0 // indirect

14
go.sum
View File

@@ -8,8 +8,6 @@ github.com/aliyun/alibaba-cloud-sdk-go v1.63.53/go.mod h1:SOSDHfe1kX91v3W5QiBsWS
github.com/aliyun/alibabacloud-nls-go-sdk v1.1.1 h1:LjItoNZuu5xHlsByFo+kr3nGa4LRIESCGWhfurayxBg=
github.com/aliyun/alibabacloud-nls-go-sdk v1.1.1/go.mod h1:4BDMUKpEaP/Ct79w0ozR0nbnEj49g1k3mrgX/IKG5I4=
github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
github.com/creack/goselect v0.1.2 h1:2DNy14+JPjRBgPzAd1thbQp4BSIihxcBf0IXhQXDRa0=
github.com/creack/goselect v0.1.2/go.mod h1:a/NhLweNvqIYMuxcMOuWY516Cimucms3DglDzQP3hKY=
github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -39,6 +37,10 @@ github.com/gopxl/beep/v2 v2.1.0/go.mod h1:sQvj2oSsu8fmmDWH3t0DzIe0OZzTW6/TJEHW4K
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grid-x/modbus v0.0.0-20241004123532-f6c6fb5201b3 h1:TfBJ561lUg0i0GLsxKeRaWoBGN8nyCLNt0OMGRx7R2M=
github.com/grid-x/modbus v0.0.0-20241004123532-f6c6fb5201b3/go.mod h1:WpbUAyptAAi0VAriSRopZa6uhiJOJCTz7KFvgGtNRXc=
github.com/grid-x/serial v0.0.0-20211107191517-583c7356b3aa h1:Rsn6ARgNkXrsXJIzhkE4vQr5Gbx2LvtEMv4BJOK4LyU=
github.com/grid-x/serial v0.0.0-20211107191517-583c7356b3aa/go.mod h1:kdOd86/VGFWRrtkNwf1MPk0u1gIjc4Y7R2j7nhwc7Rk=
github.com/hajimehoshi/go-mp3 v0.3.4 h1:NUP7pBYH8OguP4diaTZ9wJbUbk3tC0KlfzsEpWmYj68=
github.com/hajimehoshi/go-mp3 v0.3.4/go.mod h1:fRtZraRFcWb0pu7ok0LqyFhCUrPeMsGRSVop0eemFmo=
github.com/hajimehoshi/oto/v2 v2.3.1/go.mod h1:seWLbgHH7AyUMYKfKYT9pg7PhUu9/SisyJvNTT+ASQo=
@@ -73,8 +75,6 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJ
github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
github.com/munnik/modbus v1.6.6 h1:QRAR+04bivKSzPN5qi5g9Wyzh+e3oQVFMUOhv35ya5Q=
github.com/munnik/modbus v1.6.6/go.mod h1:p8PIBjiZgsY82MiZPrkAGkrDomL1tBNGGQIwyAm4Vp0=
github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
github.com/opentracing/opentracing-go v1.2.1-0.20220228012449-10b1cf09e00b h1:FfH+VrHHk6Lxt9HdVS0PXzSXFyS2NbZKXv33FYPol0A=
@@ -126,8 +126,6 @@ github.com/warthog618/go-gpiocdev v0.9.1 h1:pwHPaqjJfhCipIQl78V+O3l9OKHivdRDdmgX
github.com/warthog618/go-gpiocdev v0.9.1/go.mod h1:dN3e3t/S2aSNC+hgigGE/dBW8jE1ONk9bDSEYfoPyl8=
github.com/warthog618/go-gpiosim v0.1.1 h1:MRAEv+T+itmw+3GeIGpQJBfanUVyg0l3JCTwHtwdre4=
github.com/warthog618/go-gpiosim v0.1.1/go.mod h1:YXsnB+I9jdCMY4YAlMSRrlts25ltjmuIsrnoUrBLdqU=
go.bug.st/serial v1.6.2 h1:kn9LRX3sdm+WxWKufMlIRndwGfPWsH1/9lCWXQCasq8=
go.bug.st/serial v1.6.2/go.mod h1:UABfsluHAiaNI+La2iESysd9Vetq7VRdpxvjx7CmmOE=
go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
@@ -160,8 +158,6 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5h
golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20220712014510-0a85c31ab51e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220829200755-d48e67d00261/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -195,4 +191,6 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C
gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
pgregory.net/rapid v1.1.0 h1:CMa0sjHSru3puNx+J0MIAuiiEV4N0qj8/cMWGBBCsjw=
pgregory.net/rapid v1.1.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=
rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

6
internal/middleware/relay.go
View File

@@ -8,12 +8,12 @@ import (
)
// RelayMaster 继电器中间件
func RelayMaster(r *relay.Device) leaf.HandlerFunc {
func RelayMaster(r relay.Relay) leaf.HandlerFunc {
return func(c *leaf.Context) {
pm := leaf.Value[*schema.PlayModal](c, PayloadJSONKey)
if r != nil && pm.Power {
r.On(1)
defer r.Off(1)
r.On(0)
defer r.Off(0)
zap.S().Infoln("开启电源")
defer zap.S().Infoln("关闭电源")

8
internal/routes/play/push_card.go
View File

@@ -31,10 +31,10 @@ func PushCard(ctx context.Context) leaf.HandlerFunc {
g := (game.G).(game.ConfigPush)
// 开始初始化读卡器
reader, err := card_reader.NewReader(g.ReadURL)
reader, err := card_reader.NewReader(g.ReadAddr)
if err != nil {
if errors.Is(err, fs.ErrNotExist) {
zap.S().Errorf("读卡器串口文件不存在: %s", g.ReadURL)
zap.S().Errorf("读卡器串口文件不存在: %s", g.ReadAddr)
os.Exit(1)
}
zap.S().Panicf("读卡器串口连接失败 [%T]: %q", err, err)
@@ -48,7 +48,7 @@ func PushCard(ctx context.Context) leaf.HandlerFunc {
devices := make([]*card_pusher.Device, 0)
for i, group := range g.PushGroups {
// 对读卡器初始化配置
reader.SetUnitID(uint8(i + 1))
reader.SetSlave(uint8(i + 1))
err = reader.Init()
if err != nil {
zap.S().Panicln("读卡器初始配置失败", err)
@@ -114,7 +114,7 @@ func PushCard(ctx context.Context) leaf.HandlerFunc {
if body.num != 0 {
// 若卡片就位，读取卡片信息
if devices[body.num-1].GetOutOk() == 1 {
reader.SetUnitID(uint8(body.num))
reader.SetSlave(uint8(body.num))
if info := reader.GetCardInfo(); info != nil {
body.CardId = info.ID
}

4
internal/routes/play/wait_card.go
View File

@@ -20,10 +20,10 @@ import (
func WaitCard(ctx context.Context) leaf.HandlerFunc {
g := (game.G).(game.ConfigWait)
reader, err := card_reader.NewReader(g.URL)
reader, err := card_reader.NewReader(g.Addr)
if err != nil {
if errors.Is(err, fs.ErrNotExist) {
zap.S().Errorf("读卡器串口文件不存在: %s", g.URL)
zap.S().Errorf("读卡器串口文件不存在: %s", g.Addr)
os.Exit(1)
}
zap.S().Panicf("读卡器串口连接失败 [%T]: %q", err, err)

8
internal/routes/wait.go
View File

@@ -177,12 +177,12 @@ func relayAction(c *leaf.Context, item schema.WaitItemModel, root schema.TimeMod
defer cancel()
}
device, err := relay.New(item.Data, nil)
r, err := relay.New(item.Data)
if err != nil {
zap.S().Errorln("继电器初始化异常: ", err)
return
}
defer device.Close()
defer r.Close()
select {
case <-c.Done():
@@ -191,9 +191,9 @@ func relayAction(c *leaf.Context, item schema.WaitItemModel, root schema.TimeMod
zap.S().Infoln("待机继电器供电")
defer zap.S().Infoln("待机继电器断电")
device.On(1)
r.On(0)
<-c.Done()
device.Off(1)
r.Off(0)
}
}
}

13
internal/server.go
View File

@@ -10,6 +10,7 @@ import (
"game-driver/internal/schema"
"game-driver/leaf"
"game-driver/logger"
"game-driver/pkg/relay"
"game-driver/pkg/tts"
"game-driver/pkg/utils"
"github.com/eclipse/paho.golang/autopaho"
@@ -108,13 +109,11 @@ func Run() {
tts.DefaultTTS = tts.New(ctx, config.C.Aliyun)
// 构建继电器对象
//r, err := relay.New(config.C.Relay, func(msg string) {
// zap.S().Infoln("串口返回: ", msg)
//})
//if err != nil {
// zap.S().Panicln("串口连接异常: ", err)
//}
//defer r.Close()
r, err := relay.New(config.C.Relay)
if err != nil {
zap.S().Panicln("串口连接异常: ", err)
}
defer r.Close()
// 构建全局设备变量
device := common.DefaultDevice(ctx, publishTopic)

68
pkg/card_reader/reader.go
View File

@@ -3,7 +3,7 @@ package card_reader
import (
"context"
"fmt"
"github.com/munnik/modbus"
"github.com/grid-x/modbus"
"go.uber.org/zap"
"io"
"math"
@@ -13,7 +13,7 @@ import (
type Reader interface {
io.Closer
SetUnitID(uint8)
SetSlave(uint8)
// WriteUnitId 写入读卡器的 UnitID
WriteUnitId(uint16) error
// Init 初始化读卡器配置
@@ -24,40 +24,42 @@ type Reader interface {
}
type CardInfo struct {
Type uint16
Type []byte
ID string
}
type reader struct {
c *modbus.Client
h modbus.ClientHandler
c modbus.Client
}
// WriteUnitId 写入读卡器的 UnitID
func (r *reader) WriteUnitId(id uint16) error {
v := id<<8 + 1
zap.S().Infof("WriteRegister 40007 %#x", v)
return r.c.WriteRegister(6, v)
_, err := r.c.WriteSingleRegister(6, v)
return err
}
// Init 初始化读卡器配置
func (r *reader) Init() error {
// 配置读卡间隔时间为 50 毫秒
err := r.c.WriteRegister(8, 0x0511)
_, err := r.c.WriteSingleRegister(8, 0x0511)
if err != nil {
return err
}
// 由低到高输出 500 毫秒
err = r.c.WriteRegister(9, 0xF20A)
_, err = r.c.WriteSingleRegister(9, 0xF20A)
if err != nil {
return err
}
// 读取后自动清空，高字节：00 不清空 01 清空
err = r.c.WriteRegister(10, 0x0103)
_, err = r.c.WriteSingleRegister(10, 0x0103)
if err != nil {
return err
}
// 自动读卡号，高字节高4位：0 读一次 1 连续读
err = r.c.WriteRegister(11, 0x0301)
_, err = r.c.WriteSingleRegister(11, 0x0301)
if err != nil {
return err
}
@@ -67,31 +69,31 @@ func (r *reader) Init() error {
// GetCardInfo 获取卡号信息
func (r *reader) GetCardInfo() *CardInfo {
// 读取状态寄存器确认是否信息已经准备好
status, err := r.c.ReadRegister(29, modbus.HoldingRegister)
status, err := r.c.ReadHoldingRegisters(29, 1)
if err != nil {
zap.S().Errorln("ReadRegister 40030 error:", err)
return nil
} else if status == 0x0000 {
} else if len(status) != 2 || status[1] == 0 {
return nil
}
// 读取卡号长度
cardLength, err := r.c.ReadRegister(30, modbus.HoldingRegister)
cardLength, err := r.c.ReadHoldingRegisters(30, 1)
if err != nil {
zap.S().Errorln("ReadRegister 40031 error:", err)
return nil
}
dataLength := cardLength >> 8
dataLength := cardLength[0]
// 读取卡类型
cardType, err := r.c.ReadRegister(31, modbus.HoldingRegister)
cardType, err := r.c.ReadHoldingRegisters(31, 1)
if err != nil {
zap.S().Errorln("ReadRegister 40032 error:", err)
return nil
}
// 读取卡号数据
cardData, err := r.c.ReadRegisters(32, uint16(math.Round(float64(dataLength)/2)), modbus.HoldingRegister)
cardData, err := r.c.ReadHoldingRegisters(32, uint16(math.Round(float64(dataLength)/2)))
if err != nil {
zap.S().Errorln("ReadRegister 40033~ error:", err)
return nil
@@ -99,11 +101,7 @@ func (r *reader) GetCardInfo() *CardInfo {
s := make([]string, dataLength)
for i := 0; i < int(dataLength); i++ {
if i%2 == 0 {
s[i] = fmt.Sprintf("%02X", cardData[i/2]>>8)
} else {
s[i] = fmt.Sprintf("%02X", cardData[i/2]&0xFF)
}
s[i] = fmt.Sprintf("%02X", cardData[i])
}
return &CardInfo{
@@ -127,30 +125,30 @@ func (r *reader) OnCardInfo(ctx context.Context, f func(info *CardInfo)) {
}
}
func (r *reader) SetUnitID(unitID uint8) {
_ = r.c.SetUnitID(unitID)
func (r *reader) SetSlave(unitID byte) {
r.h.SetSlave(unitID)
}
func (r *reader) Close() error {
return r.c.Close()
return r.h.Close()
}
// NewReader 创建一个新的读卡器
func NewReader(URL string) (Reader, error) {
func NewReader(address string) (Reader, error) {
// 配置串口客户端
c, _ := modbus.NewClient(&modbus.Configuration{
URL: URL,
Speed: 9600,
DataBits: 8,
Timeout: 2 * time.Second,
Logger: zap.NewStdLog(zap.L()),
})
h := modbus.NewRTUClientHandler(address)
h.SlaveID = 1
h.BaudRate = 9600
h.DataBits = 8
h.Parity = "N"
h.StopBits = 1
// 打开串口连接
err := c.Open()
if err != nil {
// 连接串口
if err := h.Connect(); err != nil {
return nil, err
}
// 创建 modbus 客户端
c := modbus.NewClient(h)
return &reader{c}, nil
return &reader{h, c}, nil
}

28
pkg/relay/portlist.go
View File

@@ -1,28 +0,0 @@
package relay
import (
"fmt"
"log"
"go.bug.st/serial/enumerator"
)
func PrintPorts() {
ports, err := enumerator.GetDetailedPortsList()
if err != nil {
log.Fatal(err)
}
if len(ports) == 0 {
return
}
for _, port := range ports {
fmt.Printf("Port: %s\n", port.Name)
if port.Product != "" {
fmt.Printf(" Product Name: %s\n", port.Product)
}
if port.IsUSB {
fmt.Printf(" USB ID : %s:%s\n", port.VID, port.PID)
fmt.Printf(" USB serial : %s\n", port.SerialNumber)
}
}
}

72
pkg/relay/relay.go
View File

@@ -1,46 +1,64 @@
package relay
import (
"bufio"
"fmt"
"go.bug.st/serial"
"github.com/grid-x/modbus"
"io"
)
type Device struct {
port serial.Port
type Relay interface {
io.Closer
SetSlave(slaveID byte)
On(num int) error
Off(num int) error
OnAll() error
OffAll() error
}
func (r *Device) Close() error {
return r.port.Close()
type device struct {
h modbus.ClientHandler
c modbus.Client
}
func (r *Device) On(num int) error {
_, err := io.WriteString(r.port, fmt.Sprintf("AT+OUT%v+1=ON\r\n", num))
func (r *device) SetSlave(slaveID byte) {
r.h.SetSlave(slaveID)
}
func (r *device) Close() error {
return r.h.Close()
}
func (r *device) OnAll() error {
_, err := r.c.WriteMultipleCoils(uint16(0), 16, []byte{0xFF, 0xFF})
return err
}
func (r *Device) Off(num int) error {
_, err := io.WriteString(r.port, fmt.Sprintf("AT+OUT%v+1=OFF\r\n", num))
func (r *device) OffAll() error {
_, err := r.c.WriteMultipleCoils(uint16(0), 16, []byte{0x00, 0x00})
return err
}
func New(portName string, reader func(msg string)) (*Device, error) {
port, err := serial.Open(portName, &serial.Mode{
BaudRate: 9600,
DataBits: 8,
})
if err != nil {
func (r *device) On(num int) error {
_, err := r.c.WriteSingleCoil(uint16(num), 0xFF00)
return err
}
func (r *device) Off(num int) error {
_, err := r.c.WriteSingleCoil(uint16(num), 0x0000)
return err
}
func New(address string) (Relay, error) {
h := modbus.NewRTUClientHandler(address)
h.SlaveID = 1
h.BaudRate = 9600
h.DataBits = 8
h.Parity = "N"
h.StopBits = 1
if err := h.Connect(); err != nil {
return nil, err
}
go func() {
for {
r := bufio.NewReader(port)
line, _, _ := r.ReadLine()
if reader != nil {
reader(string(line))
}
}
}()
return &Device{port: port}, nil
c := modbus.NewClient(h)
return &device{h, c}, nil
}