w1temp/dist/lib/getSensorsUids.js

Measure temperature through DS18B20 sensor connected to 1wire to Raspberry PI with node.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = getSensorsUids;

var _fs = require('fs');

var _fs2 = _interopRequireDefault(_fs);

var _fileExistsWait = require('./fileExistsWait');

var _fileExistsWait2 = _interopRequireDefault(_fileExistsWait);

var _constants = require('./constants');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function getSensorsUids(masterBusId) {
  if (typeof masterBusId !== 'number') {
    masterBusId = 1;
  }

  return new Promise(function (resolve, reject) {
    var file = '/sys/bus/w1/devices/w1_bus_master' + masterBusId + '/w1_master_slaves';

    (0, _fileExistsWait2.default)(file).then(function () {
      var data = _fs2.default.readFileSync(file, 'utf8');
      var list = data.split('\n').filter(function (line) {
        return _constants.SENSOR_UID_REGEXP.test(line);
      });

      resolve(list);
    }).catch(function () {
      reject(new Error('Cant get list of sensors'));
    });
  });
}