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const { crc16 } = require('./crc16'); // 引入上面的文件
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/**
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*
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* @param {*} buffer
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* @returns 解析数据包
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*/
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function toModel(buffer) {
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const parsedData = {};
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// 跳过前两个字节（0xAA和0xBB）
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let offset = 2;
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// CRC16
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parsedData.CRC16 = buffer.readUInt16LE(offset);
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offset += 2;
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// 其他字段
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parsedData.治疗剩余时间 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.当前已超滤量 = buffer.readUInt16LE(offset)/1000;
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offset += 2;
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parsedData.超滤率 = buffer.readUInt16LE(offset)/1000;
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offset += 2;
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parsedData.超滤目标 = buffer.readUInt16LE(offset)/1000;
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offset += 2;
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parsedData.设定血流量 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.实际血流量 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.静脉压 = buffer.readInt16LE(offset);
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offset += 2;
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parsedData.动脉压 = buffer.readInt16LE(offset);
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offset += 2;
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parsedData.跨膜压 = buffer.readInt16LE(offset);
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offset += 2;
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parsedData.电导度 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.透析液实际流量 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.透析液实际温度 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.肝素速率 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.肝素停止时间 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.追加量 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.前补液总量 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.前已补液量 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.后补液总量 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.后已补液量 = buffer.readUInt16LE(offset) / 10;
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offset += 2;
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parsedData.血压计收缩血压 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.血压计舒张血压 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.血压计脉搏 = buffer.readUInt16LE(offset);
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offset += 1;
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console.log(offset);
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parsedData.模式 = buffer.readUInt8(offset+1);
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offset +=1;
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parsedData.KtV = buffer.readUInt8(offset+1)/10;
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offset += 2;
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parsedData.清除率 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.相对血容量 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.设备编号前16位 = buffer.readUInt32LE(offset);
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offset += 2;
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parsedData.设备编号后16位 = buffer.readUInt32LE(offset);
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offset += 2;
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parsedData.血压计平均血压 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.血氧参数Spo2值 = buffer.readUInt16LE(offset);
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offset += 2;
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parsedData.血氧参数脉率 = buffer.readUInt16LE(offset);
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console.log(parsedData);
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return parsedData;
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}
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function add0(m) { return m < 10 ? '0' + m : m }
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function format(shijianchuo) {
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//shijianchuo是整数，否则要parseInt转换
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var time = new Date(shijianchuo);
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var y = time.getFullYear();
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var m = time.getMonth() + 1;
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var d = time.getDate();
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var h = time.getHours();
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var mm = time.getMinutes();
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var s = time.getSeconds();
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return y + '-' + add0(m) + '-' + add0(d) + ' ' + add0(h) + ':' + add0(mm) + ':' + add0(s);
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}
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module.exports = { toModel,format };
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