63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
package gps
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import (
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"fmt"
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"strconv"
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"strings"
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)
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type Status struct {
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GotResponses bool `json:"gotResponses"`
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FoundSatelitesCount int `json:"foundSatelitesCount"`
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ActiveSatelitesCounte int `json:"activeSatelitesCount"`
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}
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var StatusNil = Status{
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GotResponses: false,
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FoundSatelitesCount: 0,
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ActiveSatelitesCounte: 0,
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}
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func (g *gps) GetStatus() (Status, error) {
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// Provides more information about signal and possible problems using NMEA reports
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// Collect reports
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reports, err := g.collectNmeaReports(nmeaFlagsAll) // Now minimum
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if err != nil {
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return StatusNil, fmt.Errorf("collect nmea reports: %w", err)
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}
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// Annalise
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st := Status{}
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checkLoop:
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for _, s := range reports {
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// Check for NMEA format
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if len(s) < 1 || s[0] != '$' {
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continue checkLoop
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}
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st.GotResponses = true
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g.logger.Println("NMEA check:", s)
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values := strings.Split(s, ",")
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if len(values[0]) != 6 {
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return StatusNil, fmt.Errorf("nmea invalid sentence: %s", s)
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}
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switch values[0][3:] { // Switch by content
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case "gsv":
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if len(values) < 17 {
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g.logger.Println("GSV too small values")
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continue checkLoop
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}
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c, err := strconv.Atoi(values[4])
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if err != nil {
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g.logger.Println("GSV too small values")
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continue checkLoop
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}
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st.FoundSatelitesCount += c
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}
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}
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return st, nil
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}
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