radxa-rock/examples/web/lib/pins.js

GPIO interface for the Radxa Rock

var CONST = require('../../../index').CONST;
var reIsPort = /^J\d{1,2}_P\d{1,2}$/;
var keys = Object.keys(CONST);
var pins = {};
var pinNumber = 0;
var rock = require('./rock');

var getStatus = function(pinNumber){
  return function(callback){
    return rock.get(pinNumber, callback);
  };
};

var setStatus = function(pinNumber){
  return function(value, callback){
    return rock.set(pinNumber, value, callback);
  };
};

var mode = function(pinNumber){
  return function(mode, callback){
    return rock.pinMode(pinNumber, mode, callback);
  };
};

keys.forEach(function(key){
  pinNumber = CONST[key];
  if(pinNumber === -1){
    return;
  }
  if(!pins[pinNumber]){
    pins[pinNumber] = {
        pin: pinNumber,
        keys: [],
        get: getStatus(pinNumber),
        set: setStatus(pinNumber),
        mode: mode(pinNumber)
      };
  }
  pins[pinNumber].keys.push(key);
  pins[key] = pins[pinNumber];
});

module.exports = pins;