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46 lines
768 B
46 lines
768 B
package sutron
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import (
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"fmt"
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)
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type SutronB struct {
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Block byte
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Group byte
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Delta byte
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Data []byte
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Voltage byte
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}
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func (s SutronB) GroupString() string {
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switch s.Group {
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case '1':
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return "Scheduled Transmission"
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case '2':
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return "Alarm Transmission"
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case '3':
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return "Forced Transmission"
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default:
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return ""
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}
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}
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func ParseSutronB(raw []byte) (*SutronB, error) {
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raw_len := len(raw)
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if raw_len < 5 {
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return nil, fmt.Errorf("message structure too short: %d bytes",
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len(raw))
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}
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if raw[0] != 'B' {
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return nil, fmt.Errorf("wrong sutron format: %s", raw[0])
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}
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data := SutronB{}
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data.Block = raw[0]
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data.Group = raw[1]
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data.Delta = raw[2]
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data.Data = raw[3 : raw_len-1]
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data.Voltage = raw[raw_len-1]
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return &data, nil
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}
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