package protocol

var _ Packet = (*RTUPacket)(nil)

type (
	RTUPacket struct {
		*ModbusHeader
		Data []byte // 数据
		CRC  uint16 // CRC校验码
	}
)

func (p *RTUPacket) Copy() Packet {
	c := *p
	return &c
}

func NewRTUPacket() *RTUPacket {
	return &RTUPacket{ModbusHeader: &ModbusHeader{}}
}

func (p *RTUPacket) GetHeader() interface{} {
	return p.ModbusHeader
}

func (p *RTUPacket) GetLen() uint64 {
	return uint64(len(p.Data))
}

func (p *RTUPacket) GetBody() []byte {
	return p.Data
}

func (p *RTUPacket) GetFunction() uint8 {
	return p.Function
}

func (p *RTUPacket) GetAddress() uint8 {
	return p.Address
}

func (p *RTUPacket) SetBody(data []byte) {
	p.Data = data
}

func (p *RTUPacket) SetError(err *MError) {
	p.Function = p.Function | 0x80
	p.Data = []byte{byte(*err)}
}