node-red-mpb10/nodes/mpb10-4axis.js

Nodes para processamento MPB10

module.exports = function(RED) {
  function MPB104AxisNode(config) {
      RED.nodes.createNode(this, config);
      const node = this;

      node.on('input', function(msg) {

        const binaryToFloat = bin => {
          const buffer = Buffer.alloc(4);
          buffer.writeUInt32BE(parseInt(bin, 2), 0);
          return buffer.readFloatBE(0);
      };
          try {
              const rawData = msg.payload.slice(10, -2).split(',').slice(0, 16);
              const bytes = rawData.map(b => 
                  parseInt(b,10).toString(2).padStart(8,'0')
              );
              
              const axis = [
                  bytes.slice(0,4),
                  bytes.slice(4,8),
                  bytes.slice(8,12),
                  bytes.slice(12,16)
              ].map(group => group.join(''));
              
              const outputs = axis.map((bin, idx) => {
                  const newMsg = RED.util.cloneMessage(msg);
                  newMsg.payload = binaryToFloat(bin);
                  newMsg.topic = ['X','Y','Z','A'][idx];
                  return newMsg;
              });
              
              node.send(outputs);
          } catch (err) {
              node.error("Erro: " + err);
          }
      });
  }
  RED.nodes.registerType("mpb10-4axis", MPB104AxisNode);
}