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      1 /*
      2  * Author: Eugene Bolshakov <pub (at) relvarsoft.com>
      3  * Copyright (c) 2015 Eugene Bolshakov
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining
      6  * a copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sublicense, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be
     14  * included in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 var m = require('mraa'); //require mraa
     26 console.log('MRAA Version: ' + m.getVersion());
     27 u = new m.Uart(0)
     28 
     29 console.log("Note: connect Rx and Tx of UART with a wire before use");
     30 
     31 function sleep(delay) {
     32   delay += new Date().getTime();
     33   while (new Date() < delay) { }
     34 }
     35 
     36 console.log("Set UART parameters");
     37 
     38 u.setBaudRate(115200);
     39 u.setMode(8, 0, 1);
     40 u.setFlowcontrol(false, false);
     41 sleep(200);
     42 
     43 console.log("First write-read circle:");
     44 
     45 u.writeStr("test\n");
     46 sleep(200);
     47 console.log(u.readStr(6));
     48 sleep(200);
     49 
     50 console.log("Second write-read circle:");
     51 
     52 u.writeStr("2nd test\n");
     53 sleep(200);
     54 console.log(u.readStr(10));
     55