knxnetjs
Version:
A TypeScript library for KNXnet/IP communication
103 lines • 3.88 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.KNXHIDReport = void 0;
class KNXHIDReport {
constructor(body, reportId = 1, sequenceCounter = 1, packageType = 3) {
if (body.length > KNXHIDReport.MAX_BODY_LENGTH) {
throw new Error(`Body length ${body.length} exceeds maximum of ${KNXHIDReport.MAX_BODY_LENGTH} bytes`);
}
if (reportId < 0 || reportId > 255) {
throw new Error(`Report ID ${reportId} must be between 0 and 255`);
}
if (sequenceCounter < 0 || sequenceCounter > 15) {
throw new Error(`Sequence counter ${sequenceCounter} must be between 0 and 15`);
}
if (packageType < 0 || packageType > 15) {
throw new Error(`Package type ${packageType} must be between 0 and 15`);
}
this.reportId = reportId;
this.sequenceCounter = sequenceCounter & 0x0f;
this.packageType = packageType & 0x0f;
this.bodyLength = body.length;
this.body = Buffer.from(body);
}
static fromBuffer(buffer) {
if (buffer.length < 3) {
throw new Error("Buffer too short for KNX HID report");
}
const reportId = buffer[0];
const sequenceAndType = buffer[1];
const sequenceCounter = (sequenceAndType >> 4) & 0x0f;
const packageType = sequenceAndType & 0x0f;
const bodyLength = buffer[2];
if (buffer.length < 3 + bodyLength) {
throw new Error(`Buffer too short for declared body length ${bodyLength}`);
}
const body = buffer.subarray(3, 3 + bodyLength);
return new KNXHIDReport(body, reportId, sequenceCounter, packageType);
}
toBuffer() {
const buffer = Buffer.alloc(KNXHIDReport.REPORT_SIZE);
// Report ID (8 bits)
buffer[0] = this.reportId;
// Sequence counter (4 bits) + Package type (4 bits)
buffer[1] = (this.sequenceCounter << 4) | this.packageType;
// Body length (8 bits)
buffer[2] = this.bodyLength;
// Body data
this.body.copy(buffer, 3);
// Remaining bytes are already zero from Buffer.alloc()
return buffer;
}
getReportId() {
return this.reportId;
}
setReportId(reportId) {
if (reportId < 0 || reportId > 255) {
throw new Error(`Report ID ${reportId} must be between 0 and 255`);
}
this.reportId = reportId;
}
getSequenceCounter() {
return this.sequenceCounter;
}
setSequenceCounter(counter) {
if (counter < 0 || counter > 15) {
throw new Error(`Sequence counter ${counter} must be between 0 and 15`);
}
this.sequenceCounter = counter & 0x0f;
}
getPackageType() {
return this.packageType;
}
setPackageType(type) {
if (type < 0 || type > 15) {
throw new Error(`Package type ${type} must be between 0 and 15`);
}
this.packageType = type & 0x0f;
}
getBodyLength() {
return this.bodyLength;
}
getBody() {
return Buffer.from(this.body);
}
setBody(body) {
if (body.length > KNXHIDReport.MAX_BODY_LENGTH) {
throw new Error(`Body length ${body.length} exceeds maximum of ${KNXHIDReport.MAX_BODY_LENGTH} bytes`);
}
this.body = Buffer.from(body);
this.bodyLength = body.length;
}
toString() {
return (`KNXHIDReport { reportId: 0x${this.reportId
.toString(16)
.padStart(2, "0")}, ` +
`seq: ${this.sequenceCounter}, type: ${this.packageType}, ` +
`bodyLen: ${this.bodyLength}, body: ${this.body.toString("hex")} }`);
}
}
exports.KNXHIDReport = KNXHIDReport;
KNXHIDReport.MAX_BODY_LENGTH = 61;
KNXHIDReport.REPORT_SIZE = 64;
//# sourceMappingURL=knx-hid-report.js.map