@halsystems/red-bacnet
Version:
NodeRED BACnet IP client
43 lines (42 loc) • 1.64 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.decode = exports.encode = void 0;
const baAsn1 = require("../asn1");
const encode = (buffer, alarms) => {
alarms.forEach((alarm) => {
baAsn1.encodeContextObjectId(buffer, 12, alarm.objectId.type, alarm.objectId.instance);
baAsn1.encodeContextEnumerated(buffer, 9, alarm.alarmState);
baAsn1.encodeContextBitstring(buffer, 8, alarm.acknowledgedTransitions);
});
};
exports.encode = encode;
const decode = (buffer, offset, apduLen) => {
let len = 0;
let result;
let decodedValue;
const alarms = [];
while ((apduLen - 3 - len) > 0) {
const value = {};
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeObjectId(buffer, offset + len);
len += decodedValue.len;
value.objectId = { type: decodedValue.objectType, instance: decodedValue.instance };
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeEnumerated(buffer, offset + len, result.value);
len += decodedValue.len;
value.alarmState = decodedValue.value;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeBitstring(buffer, offset + len, result.value);
len += decodedValue.len;
value.acknowledgedTransitions = decodedValue.value;
alarms.push(value);
}
return {
len: len,
alarms: alarms
};
};
exports.decode = decode;