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package nmea
import "strings"
const (
// TypeTXT type for TXT sentences for the transmission of text messages
TypeTXT = "TXT"
)
// TXT is sentence for the transmission of short text messages, longer text messages may be transmitted by using
// multiple sentences. This sentence is intended to convey human readable textual information for display purposes.
// The TXT sentence shall not be used for sending commands and making device configuration changes.
// https://www.nmea.org/Assets/20160520%20txt%20amendment.pdf
//
// Format: $--TXT,xx,xx,xx,c-c*hh<CR><LF>
// Example: $GNTXT,01,01,02,u-blox AG - www.u-blox.com*4E
type TXT struct {
BaseSentence
TotalNumber int64 // total number of sentences, 01 to 99
Number int64 // number of current sentences, 01 to 99
ID int64 // identifier of the text message, 01 to 99
// Message contains ASCII characters, and code delimiters if needed, up to the maximum permitted sentence length
// (i.e., up to 61 characters including any code delimiters)
Message string
}
// newTXT constructor
func newTXT(s BaseSentence) (Sentence, error) {
p := NewParser(s)
p.AssertType(TypeTXT)
m := TXT{
BaseSentence: s,
TotalNumber: p.Int64(0, "total number of sentences"),
Number: p.Int64(1, "sentence number"),
ID: p.Int64(2, "sentence identifier"),
Message: strings.Join(p.Fields[3:], FieldSep),
}
return m, p.Err()
}
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