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parse.go
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parse.go
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package serial
import (
"log"
"strconv"
"strings"
)
func parseTemperature(b string) (TemperatureData, error) {
sep := strings.Split(b, "= ")
if len(sep) < 2 {
return TemperatureData(ParseErrorCodeDLPTH1C), DataMissingError()
}
temperatureStr := strings.Split(sep[1], "\xb0C")[0]
temperature, err := strconv.ParseFloat(temperatureStr, 64)
if err != nil {
log.Print(b)
return TemperatureData(ParseErrorCodeDLPTH1C), err
}
return TemperatureData(temperature), nil
}
func parseHumidity(b string) (HumidityData, error) {
sep := strings.Split(b, "= ")
if len(sep) < 2 {
log.Print(b)
return HumidityData(ParseErrorCodeDLPTH1C), DataMissingError()
}
humidityStr := strings.Split(sep[1], "%")[0]
humidity, err := strconv.ParseFloat(humidityStr, 64)
if err != nil {
log.Print(b)
return HumidityData(ParseErrorCodeDLPTH1C), err
}
return HumidityData(humidity), nil
}
func parsePressure(b string) (PressureData, error) {
sep := strings.Split(b, "= ")
if len(sep) < 2 {
log.Print(b)
return PressureData(ParseErrorCodeDLPTH1C), DataMissingError()
}
pressureStr := strings.TrimSpace(strings.Split(strings.Split(sep[1], "\r")[0], "\x00")[0])
pressure, err := strconv.ParseFloat(pressureStr, 64)
if err != nil {
log.Print(b)
return PressureData(ParseErrorCodeDLPTH1C), err
}
return PressureData(pressure), nil
}
func parseTilt(b string) (tilt *TiltData, err error) {
// make new tilt for return
tilt = new(TiltData)
sep := strings.Split(b, ":")
if len(sep) < 4 {
log.Print(b)
return nil, DataMissingError()
}
xAxisStr := strings.TrimSpace(strings.Split(strings.Split(sep[1], " ")[0], "\r")[0])
yAxisStr := strings.TrimSpace(strings.Split(strings.Split(sep[2], " ")[0], "\r")[0])
zAxisStr := strings.TrimSpace(strings.Split(strings.Split(sep[3], " ")[0], "\r")[0])
xAxis, err := strconv.ParseInt(xAxisStr, 10, 64)
if err != nil {
log.Print(b)
return nil, err
}
yAxis, err := strconv.ParseInt(yAxisStr, 10, 64)
if err != nil {
log.Print(b)
return nil, err
}
zAxis, err := strconv.ParseInt(zAxisStr, 10, 64)
if err != nil {
log.Print(b)
return nil, err
}
// assign into struct's member value
tilt.XAxis = xAxis
tilt.YAxis = yAxis
tilt.ZAxis = zAxis
return tilt, nil
}
func parseVibration(cmd byte, b string) (vibration *VibrationData, err error) {
// string parsing
lines := strings.Split(b, "\n")
if len(lines) < 7 {
log.Print(b)
return nil, DataMissingError()
}
// create new VibrationData pointer type variable
vibration = new(VibrationData)
// Ignore few lines('\n') by filter (explained below).
// If the length is not 3 when split based on the letter ':', it will be considered a meaningless line.
// (DLP-TH1C returns meaningless byte '\n' within a response of vibration request)
i := 0
for _, line := range lines {
// string parsing
sep := strings.Split(line, ":")
if len(sep) != 3 {
continue
}
peakStr := strings.Split(sep[1], "Hz")[0]
peakStr = strings.TrimLeft(peakStr, " ")
peak, err := strconv.ParseInt(peakStr, 10, 64)
if err != nil {
log.Print(b)
return nil, err
}
ampStr := strings.Split(strings.Split(sep[2], "\r")[0], "\x00")[0]
amp, err := strconv.ParseFloat(ampStr, 64)
if err != nil {
log.Print(b)
return nil, err
}
// set value into response struct
vibration.Axis = cmd
vibration.Peak[i] = peak
vibration.Amp[i] = amp
i++
if i > 5 {
return vibration, nil
}
}
log.Print(b)
return nil, DataMissingError()
}
func parseLight(b string) (LightData, error) {
sep := strings.Split(b, ": ")
if len(sep) < 2 {
log.Print(b)
return LightData(ParseErrorCodeDLPTH1C), DataMissingError()
}
lightStr := strings.Split(strings.Split(strings.Split(sep[1], "\r")[0], "\n")[0], "\x00")[0]
light64, err := strconv.ParseInt(lightStr, 10, 8)
if err != nil {
log.Print(b)
return LightData(ParseErrorCodeDLPTH1C), err
}
// light value consists of 8 bits (according to dlpdesing.com that made DLP-TH1C)
return LightData(light64), nil
}
func parseSound(b string) (sound *SoundData, err error) {
sound = new(SoundData)
lines := strings.Split(b, "\n")
if len(lines) < 7 {
log.Print(b)
return nil, DataMissingError()
}
// Ignore few lines('\n') by filter (explained below).
// If the length is not 3 when split based on the letter ':', it will be considered a meaningless line.
// (DLP-TH1C returns meaningless byte '\n' within a response of vibration request)
i := 0
for _, line := range lines {
sep := strings.Split(line, ":")
if len(sep) != 3 {
continue
}
peakStr := strings.Split(sep[1], "Hz")[0]
peakStr = strings.TrimLeft(peakStr, " ")
peak, err := strconv.ParseInt(peakStr, 10, 64)
if err != nil {
log.Print(b)
return nil, err
}
ampStr := strings.Split(strings.Split(sep[2], "\r")[0], "\x00")[0]
amp, err := strconv.ParseFloat(ampStr, 64)
if err != nil {
log.Print(b)
return nil, err
}
// set value into the response struct
sound.Peak[i] = peak
sound.Amp[i] = amp
i++
if i > 5 {
return sound, nil
}
}
log.Print(b)
return nil, DataMissingError()
}
func parseBroadband(b string) (BroadbandData, error) {
sep := strings.Split(b, ": ")
if len(sep) < 2 {
return BroadbandData(ParseErrorCodeDLPTH1C), DataMissingError()
}
broadbandStr := strings.Split(strings.Split(strings.Split(sep[1], "\r")[0], "\n")[0], "\x00")[0]
broadband, err := strconv.ParseFloat(broadbandStr, 64)
if err != nil {
log.Print(b)
return BroadbandData(ParseErrorCodeDLPTH1C), err
}
return BroadbandData(broadband), nil
}