zigbee-herdsman
Version:
An open source ZigBee gateway solution with node.js.
92 lines • 3.37 kB
JavaScript
;
/* v8 ignore start */
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.Writer = void 0;
const stream = __importStar(require("node:stream"));
const logger_1 = require("../../../utils/logger");
const consts = __importStar(require("./consts"));
const utils_1 = require("./utils");
const NS = "zh:ezsp:uart";
class Writer extends stream.Readable {
writeBuffer(buffer) {
logger_1.logger.debug(`--> [${buffer.toString("hex")}]`, NS);
this.push(buffer);
}
_read() { }
sendACK(ackNum) {
/* Construct a acknowledgement frame */
const ackFrame = this.makeFrame(0b10000000 | ackNum);
this.writeBuffer(ackFrame);
}
sendNAK(ackNum) {
/* Construct a negative acknowledgement frame */
const nakFrame = this.makeFrame(0b10100000 | ackNum);
this.writeBuffer(nakFrame);
}
sendReset() {
/* Construct a reset frame */
const rstFrame = Buffer.concat([Buffer.from([consts.CANCEL]), this.makeFrame(0xc0)]);
this.writeBuffer(rstFrame);
}
sendData(data, seq, rxmit, ackSeq) {
/* Construct a data frame */
const control = (seq << 4) | (rxmit << 3) | ackSeq;
const dataFrame = this.makeFrame(control, data);
this.writeBuffer(dataFrame);
}
*stuff(buffer) {
/* Byte stuff (escape) a string for transmission */
for (const byte of buffer) {
if (consts.RESERVED.includes(byte)) {
yield consts.ESCAPE;
yield byte ^ consts.STUFF;
}
else {
yield byte;
}
}
}
makeFrame(control, data) {
/* Construct a frame */
const frm = [control, ...(data || [])];
const crc = (0, utils_1.crc16ccitt)(frm, 65535);
frm.push(crc >> 8);
frm.push(crc % 256);
return Buffer.from([...this.stuff(frm), consts.FLAG]);
}
}
exports.Writer = Writer;
//# sourceMappingURL=writer.js.map