main.go
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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 ControlPacket [50]uint16
type StatePacket [57]uint16
var mutex sync.Mutex
var templateMap = make(map[string]interface{})
var controlDesc [50]string
var stateDesc [73]string
func init() {
controlDesc[5] = "Oven Mode"
controlDesc[6] = "Cook On/Off"
controlDesc[7] = "Wash On/Off"
controlDesc[8] = "System On/Off"
controlDesc[9] = "Temp"
controlDesc[10] = "Humidity"
controlDesc[11] = "Time"
controlDesc[12] = "Preheat On/Off"
controlDesc[15] = "Convection RPM"
controlDesc[16] = "Cooldown On/Off"
controlDesc[17] = "Core Temp"
controlDesc[20] = "Wash Type"
controlDesc[21] = "Wash Total"
controlDesc[22] = "Wash Steps"
controlDesc[23] = "Wash Step Type"
stateDesc[0] = "Firmware Y"
stateDesc[1] = "Firmware Y"
stateDesc[2] = "Firmware M"
stateDesc[3] = "Firmware D"
stateDesc[4] = "Cook State"
stateDesc[5] = "Temp Setting"
stateDesc[6] = "Humidity Setting"
stateDesc[7] = "Time Setting"
stateDesc[8] = "Temp Value"
stateDesc[9] = "Humidity Value"
stateDesc[10] = "Time Value"
stateDesc[11] = "Wash State"
stateDesc[12] = "Wash Type"
stateDesc[13] = "Wash Steps"
stateDesc[16] = "Door Open/Close"
stateDesc[32] = "Core Temp 1"
stateDesc[33] = "Core Temp 2"
stateDesc[34] = "Core Temp 3"
stateDesc[35] = "Core Temp 4"
}
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)
}
switch header {
case 0:
var packet ControlPacket
err = binary.Read(buf, binary.LittleEndian, &packet)
if err != nil {
log.Fatal(err)
}
mapControl(packet)
case 1:
var packet StatePacket
err = binary.Read(buf, binary.LittleEndian, &packet)
if err != nil {
log.Fatal(err)
}
mapState(packet)
}
}
}
func mapControl(packet ControlPacket) {
mutex.Lock()
defer mutex.Unlock()
var controlTable string
for i, v := range packet {
class := "odd"
if i%2 == 0 {
class = "even"
}
controlTable += fmt.Sprintf("<tr class=\"%v\"><td>%v</td><td>0x%04X</td><td>0x%04X</td><td>%d</td><td>%v</td></tr>\n", class, 40001+i, i, v, v, controlDesc[i])
}
templateMap["Table_Control"] = template.HTML(controlTable)
}
func mapState(packet StatePacket) {
mutex.Lock()
defer mutex.Unlock()
var stateTable string
for i, v := range packet {
class := "odd"
if i%2 == 0 {
class = "even"
}
stateTable += fmt.Sprintf("<tr class=\"%v\"><td>%v</td><td>0x%04X</td><td>0x%04X</td><td>%d</td><td>%v</td></tr>\n", class, 30001+i, i, v, v, stateDesc[i])
}
templateMap["Table_State"] = template.HTML(stateTable)
}