node-red-contrib-clowire/alive/Switch.js

clowire for node-red

const states = {};
/**
 * buf数据to对象
 *
 * data 命令缓冲
 */
module.exports.buf2obj = function (data, obj) {
    if (!data) return;
    if (data[0] !== obj.uid || 
        data[3] !== 0x02 || 
        data[1] !== 0x03
        ) return;
    if(data[5] !== (1 << obj.address -1))
        return;
    return { id: obj.uid, address: obj.address, uid: obj.entity_id };
};

/**
 * obj转buf
 * @param {*} obj
 *
 */
module.exports.obj2buf = function ({ entity_id, state }, obj1) {

    if (states[obj1.uid] === undefined) states[obj1.uid] = 0; //状态暂存

    if (obj1.entity_id === entity_id) {
        let buf = [obj1.uid, 0x06, 0x10, 8, 1, 0x00];
        if (state === 'on') {
            buf[5] = states[obj1.uid] | (1 << (obj1.address - 1));
        } else {
            buf[5] = states[obj1.uid] & ~(1 << (obj1.address - 1));
        }
        states[obj1.uid] = buf[5];
        return buf;
    } else return null;
};