node-red-contrib-symi/lib/protocols/hasskit/Climate.js

Node-RED nodes for smart home device communication with Home Assistant integration, supporting HassKit, Clowire, Alive, LF and complete Symi protocols

/**
 * HassKit协议 - 气候控制设备处理
 */

/**
 * 缓冲区数据转对象
 * @param {Buffer} data 命令缓冲
 * @param {object} obj 节点对象
 */
function buf2obj(data, obj) {
    const protocolData = _protocol(data)
    if (!protocolData) return null
    
    protocolData.uid = obj.entity_id
    if (obj.uid === protocolData.id)
        return protocolData
    else
        return null
}

/**
 * 协议解析
 * @param {Buffer} data 
 */
function _protocol(data) {
    if(!data) return;
    
    let obj = {}
    obj.id = data[1]  // HassKit协议中设备ID在第2字节
    
    // 根据命令字节判断设备类型和操作
    switch (data[3]) {
        case 0x01: // 温度设置
            obj.type = 'setTemperature'
            obj.val = data[4]
            break
        case 0x02: // 模式设置
            obj.type = 'mode'
            obj.val = _getModeFromValue(data[4])
            break
        case 0x03: // 电源控制
            obj.type = 'power'
            obj.val = data[4] ? 'on' : 'off'
            break
        default:
            return null
    }
    
    return obj
}

/**
 * 根据数值获取模式
 * @param {number} value 
 */
function _getModeFromValue(value) {
    const modes = ['off', 'heat', 'cool', 'auto', 'dry', 'fan_only']
    return modes[value] || 'off'
}

/**
 * 根据模式获取数值
 * @param {string} mode 
 */
function _getValueFromMode(mode) {
    const modes = ['off', 'heat', 'cool', 'auto', 'dry', 'fan_only']
    return modes.indexOf(mode) || 0
}

/**
 * 对象转缓冲区
 * @param {object} obj HA状态对象
 * @param {object} obj1 节点对象
 */
function obj2buf(obj, obj1) {
    if (obj1.entity_id === obj.entity_id) {
        let commands = []
        
        // 温度设置
        if (obj.attributes && obj.attributes.temperature) {
            let buf = [0xb2, obj1.uid, 0x00, 0x01, obj.attributes.temperature, 0x00, 0x00, 0x2b]
            commands.push(buf)
        }
        
        // 模式设置
        if (obj.state) {
            let modeValue = _getValueFromMode(obj.state)
            let buf = [0xb2, obj1.uid, 0x00, 0x02, modeValue, 0x00, 0x00, 0x2b]
            commands.push(buf)
        }
        
        // 电源控制
        let powerValue = obj.state === 'off' ? 0 : 1
        let buf = [0xb2, obj1.uid, 0x00, 0x03, powerValue, 0x00, 0x00, 0x2b]
        commands.push(buf)
        
        return commands
    }
    else
        return null
}

module.exports = {
    buf2obj,
    obj2buf
};