package org.yzh.protocol.t808.T8900Lock;
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import io.github.yezhihao.protostar.annotation.Field;
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import lombok.Data;
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@Data
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public class T8900ReadDeviceID {
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@Field(index = 0, length = 2, desc = "读锁ID命令")
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private byte[] lockId = {(byte) 0xFF, (byte) 0xFF};
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@Field(index = 2, length = 1, desc = "命令类型")
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private byte commandType = 0x09;
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@Field(index = 3, length = 1, desc = "校验码")
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private byte checksum;
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/**
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* 计算校验和：(aa + aa + 02 + cc) & 0xFF
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*/
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public byte calculateChecksum() {
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int sum = lockId[0] & 0xFF;
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sum += lockId[1] & 0xFF;
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sum += commandType & 0xFF;
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this.checksum = (byte) (sum & 0xFF);
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return this.checksum;// (byte) (sum & 0xFF); // 取低8位
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}
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}
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