fd05639c9
 김태훈
웹으로 모드버스 테이블 보여주는...
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
package main
import (
"bytes"
"encoding/binary"
"fmt"
"html/template"
"log"
"net"
"sync"
"github.com/codegangsta/martini"
"github.com/codegangsta/martini-contrib/render"
)
type Header int32
type Packet [50]uint16
var mutex sync.Mutex
var templateMap = make(map[string]interface{})
var controlTable, stateTable string
func main() {
go ListenUDP()
m := martini.Classic()
m.Use(render.Renderer())
m.Get("/", func(r render.Render) {
mutex.Lock()
defer mutex.Unlock()
r.HTML(200, "main", templateMap)
})
m.Run()
}
func ListenUDP() {
addr, err := net.ResolveUDPAddr("udp", ":40001")
if err != nil {
log.Fatal(err)
}
conn, err := net.ListenUDP("udp", addr)
if err != nil {
log.Fatal(err)
}
defer conn.Close()
for {
b := make([]byte, 1024)
_, _, err := conn.ReadFromUDP(b)
if err != nil {
log.Fatal(err)
}
buf := bytes.NewReader(b)
var header Header
err = binary.Read(buf, binary.LittleEndian, &header)
if err != nil {
log.Fatal(err)
}
var packet Packet
err = binary.Read(buf, binary.LittleEndian, &packet)
if err != nil {
log.Fatal(err)
}
switch header {
case 0:
mapControl(packet)
case 1:
mapState(packet)
}
}
}
func mapControl(packet Packet) {
mutex.Lock()
defer mutex.Unlock()
controlTable = ""
for i, v := range packet {
controlTable += fmt.Sprintf("<tr><td>%v</td><td>0x%04X</td><td>0x%04X</td><td>%d</td></tr>
", 30001+i, i, v, v)
}
templateMap["Table_Control"] = template.HTML(controlTable)
}
func mapState(packet Packet) {
mutex.Lock()
defer mutex.Unlock()
stateTable = ""
for i, v := range packet {
stateTable += fmt.Sprintf("<tr><td>%v</td><td>0x%04X</td><td>0x%04X</td><td>%d</td></tr>
", 40001+i, i, v, v)
}
templateMap["Table_State"] = template.HTML(stateTable)
}
|