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OY1110.go
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package main
import (
"encoding/base64"
"encoding/json"
"fmt"
"math"
"time"
)
/*
"payload": {"applicationID": "20","applicationName": "TalkpoolOY","deviceName": "OY1100","devEUI": "20-56-31-55-54-33-57-14","rxInfo": [{"mac": "C0-EE-40-FF-FF-29-3D-F8","rssi": -33,"loRaSNR": 7.2,"name": "GW name","latitude": "","longitude": "","altitude": ""}],"txInfo": {"frequency": "X","dataRate": {"modulation": "LORA","bandwidth": "X","spreadFactor": "X"},"adr": true,"codeRate": "X"},"fCnt": 25,"fPort": 1,"data": [{"time": 1547008071054,"temp": 23.7,"hum": 62.1},{"time": 1547005891054,"temp": 23.7,"hum": 62},{"time": 1547010251054,"temp": 23.6,"hum": 60.8}]}
*/
//type onyielddata struct {
// Time time.Time
// Temperature float64
// Humidity float64
// V float64
//}
type decoded1100data struct {
DeviceEui string `json:"deviceEui"`
Seqno uint32 `json:"seqno"`
Port uint8 `json:"port"`
AppEui string `json:"appEui"`
Time string `json:"time"`
DeviceTx devicetx `json:"deviceTx,omitempty"`
GatewayRx []gatewayrx `json:"gatewayRx,omitempty"`
Data []onyielddata `json:"data,omitempty"`
}
func parseOY1110Data(receivedtime time.Time, port uint8, receiveddata string) []onyielddata {
//Input Validation
//Length should be a multiple of 6
var expval, VS, F1, F2, F3, F4, F5, hamza, hadi float64
databytes, _ := base64.StdEncoding.DecodeString(receiveddata)
var parsedvalues []onyielddata
switch port {
case 1: //status
case 2: //periodic single measurement
if len(databytes)%3 != 0 {
return nil
}
//fmt.Println("databytes", databytes)
capacity := len(databytes) / 3
parsedvalues = make([]onyielddata, capacity)
for index := 0; index < capacity; index++ {
parsedvalues[index].Temperature = float64((int32(databytes[index*3])<<4|(int32(databytes[(index*3)+2])&0xF0)>>4)-800) / 10.0
parsedvalues[index].RelativeHumidity = float64((int32(databytes[(index*3)+1])<<4|(int32(databytes[(index*3)+2])&0x0F))-250) / 10.0
if parsedvalues[index].Temperature >= -50 && parsedvalues[index].Temperature <= -0.1 {
hamza = 2 * math.Pow(37.230718, 2)
hadi = math.Pow((108.19749-parsedvalues[index].Temperature), 2) * -1
fmt.Println("hadi", hadi)
expval = hadi / hamza
fmt.Println("expval", expval)
fmt.Println("math.Pow((108.19749 - parsedvalues[index].Temperature),2)", math.Pow((108.19749-parsedvalues[index].Temperature), 2))
VS = 330.67796 * math.Exp(expval)
parsedvalues[index].AbsoluteHumidity = fmt.Sprintf("%.2f", VS)
fmt.Println("parsedvalues[index].absoluteHumidity", parsedvalues[index].AbsoluteHumidity)
}
if parsedvalues[index].Temperature >= 0.0 && parsedvalues[index].Temperature <= 100.0 {
F1 = 0.33229003 * parsedvalues[index].Temperature
F2 = 0.010508257 * math.Pow(parsedvalues[index].Temperature, 2)
F3 = 0.00015035187 * math.Pow(parsedvalues[index].Temperature, 3)
F4 = 0.0000021798571 * math.Pow(parsedvalues[index].Temperature, 4)
F5 = 0.000000008613191 * math.Pow(parsedvalues[index].Temperature, 5)
VS = 4.8559296 + F1 + F2 + F3 + F4 + F5
V1 := (VS * parsedvalues[index].RelativeHumidity) / 100
fmt.Println("parsedvalues[index].RelativeHumidity", parsedvalues[index].RelativeHumidity)
parsedvalues[index].AbsoluteHumidity = fmt.Sprintf("%.2f", V1)
fmt.Println("parsedvalues[index].absoluteHumidity", parsedvalues[index].AbsoluteHumidity)
}
parsedvalues[index].Time = receivedtime.Add(time.Duration((-15)*index) * time.Minute)
}
case 3: //periodic group measurement
if len(databytes)%3 != 1 {
return nil
}
databytes = databytes[1:]
capacity := len(databytes) / 3
parsedvalues = make([]onyielddata, capacity)
for index := 0; index < capacity; index++ {
parsedvalues[index].Temperature = float64((int32(databytes[index*3])<<4|(int32(databytes[(index*3)+2])&0xF0)>>4)-800) / 10.0
parsedvalues[index].RelativeHumidity = float64((int32(databytes[(index*3)+1])<<4|(int32(databytes[(index*3)+2])&0x0F))-250) / 10.0
if parsedvalues[index].Temperature >= -50 && parsedvalues[index].Temperature <= -0.1 {
hamza = 2 * math.Pow(37.230718, 2)
expval = ((math.Pow((108.19749 - parsedvalues[index].Temperature), 2)) * -1) / hamza
fmt.Println("expval", expval)
fmt.Println("math.Pow((108.19749 - parsedvalues[index].Temperature),2)", math.Pow((108.19749-parsedvalues[index].Temperature), 2))
VS = 330.67796 * math.Exp(expval)
parsedvalues[index].AbsoluteHumidity = fmt.Sprintf("%.2f", VS)
fmt.Println("parsedvalues[index].absoluteHumidity", parsedvalues[index].AbsoluteHumidity)
}
if parsedvalues[index].Temperature >= 0.0 && parsedvalues[index].Temperature <= 100.0 {
F1 = 0.33229003 * parsedvalues[index].Temperature
F2 = 0.010508257 * math.Pow(parsedvalues[index].Temperature, 2)
F3 = 0.00015035187 * math.Pow(parsedvalues[index].Temperature, 3)
F4 = 0.0000021798571 * math.Pow(parsedvalues[index].Temperature, 4)
F5 = 0.000000008613191 * math.Pow(parsedvalues[index].Temperature, 5)
VS = 4.8559296 + F1 + F2 + F3 + F4 + F5
V1 := (VS * parsedvalues[index].RelativeHumidity) / 100
parsedvalues[index].AbsoluteHumidity = fmt.Sprintf("%.2f", V1)
}
parsedvalues[index].Time = receivedtime.Add(time.Duration((-15)*index) * time.Minute)
}
default:
return nil
}
return parsedvalues
}
func publishOY1110Data(dev device, entry loradata, parsedvalues []onyielddata) {
loradatabytes, err := json.Marshal(entry)
if err != nil {
fmt.Println("Failed to encode message", err)
return
}
if !dev.RawData {
var decodeddata decoded1100data
if err := json.Unmarshal([]byte(loradatabytes), &decodeddata); err != nil {
fmt.Println("Failed to encode message", err) //This error is ok as the format of data is different
}
decodeddata.Data = append(decodeddata.Data, parsedvalues...)
loradecodeddatabytes, err := json.Marshal(decodeddata)
if err != nil {
fmt.Println("Failed to encode message", err)
return
}
fmt.Println("Data sent: ", string(loradecodeddatabytes))
transferDatatoEndPoint(loradecodeddatabytes, dev)
} else {
transferDatatoEndPoint(loradatabytes, dev)
}
}