Function AppendMACPayload

pkg/encoding/lorawan/messages.go:140–153

AppendMACPayload appends encoded msg to dst.

(dst []byte, msg *ttnpb.MACPayload, isUplink bool)

// AppendMACPayload appends encoded msg to dst.
func AppendMACPayload(dst []byte, msg *ttnpb.MACPayload, isUplink bool) ([]byte, error) {
	dst, err := AppendFHDR(dst, msg.FHdr, isUplink)
	if err != nil {
		return nil, errFailedEncoding("FHDR").WithCause(err)
	}
	if msg.FPort > math.MaxUint8 {
		return nil, errExpectedLowerOrEqual("FPort", math.MaxUint8)(msg.FPort)
	}
	if len(msg.FrmPayload) > 0 || msg.FPort != 0 {
		dst = append(dst, byte(msg.FPort))
	}
	dst = append(dst, msg.FrmPayload...)
	return dst, nil
}

// MarshalMACPayload returns encoded msg.
func MarshalMACPayload(msg *ttnpb.MACPayload, isUplink bool) ([]byte, error) {