4 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
5 * Copyright (c) 2014 Intel Corporation.
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice shall be
16 * included in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 var m = require('mraa'); //require mraa
29 // helper function to go from hex val to dec
30 function char(x) { return parseInt(x, 16); }
36 if (x.readReg(char('0xd0')) != char('0x55')) {
40 // we want to read temperature so write 0x2e into control reg
41 x.writeReg(char('0xf4'), char('0x2e'))
43 // read a 16bit reg, obviously it's uncalibrated so mostly a useless value :)
44 console.log(x.readWordReg(char('0xf6')))
46 // and we can do the same thing with the read()/write() calls if we wished
47 // thought I'd really not recommend it!
51 console.log(buf.toString('hex'))
54 x.writeByte(char('0xf6'))