node-red-smithtek-hysteresis/node/smithtek_node_red_threshold_formatter.js

Adds hysteresis function to node-red

module.exports = function (RED) {
  function ThresholdFormatter(config) {
    RED.nodes.createNode(this, config);
    this.ThresholdType = config.ThresholdType || "upper";

    var node = this;

    node.on("input", function (msg) {
      let value = msg.payload;
      let outdata = {};
      if (this.ThresholdType === "upper") {
        outdata = {
          high: value
        };
      } else if (this.ThresholdType === "lower") {
        outdata = {
          low: value
        };
      }
      msg.payload = outdata;
      node.send(msg);
    });
  }

  RED.nodes.registerType("smithtek_node_red_threshold_formatter", ThresholdFormatter);
};