1/* 2* Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com> 3* Copyright (c) 2015 Intel Corporation. 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// Some vars 26var colon = true; 27var interval; 28 29// Load display 30var tm1637 = require('jsupm_tm1637'); 31 32// Instantiate on pins 0 (Clk) and 1 (Dio) 33var display = new tm1637.TM1637(0, 1); 34 35// Get the current time 36var now = new Date(); 37console.log("System time: " + now.getHours() + ":" + ("0" + now.getMinutes()).slice(-2)); 38console.log("Time zone can be changed by setting the TZ environment variable."); 39 40// Display and time update function 41function update(){ 42 now = new Date(); 43 var time = now.getHours().toString() + ("0" + now.getMinutes().toString()).slice(-2); 44 display.writeString(time); 45 display.setColon(colon = !colon); 46} 47 48// Start with a 7-segment encoded box on the display 49display.write(0x39, 0x09, 0x09, 0x0f); 50 51// Start displaying the clock after 3 seconds 52setTimeout(function(){ 53 // And update every second thereafter 54 interval = setInterval(update, 1000); 55}, 3000) 56 57// Exit handler 58process.on('SIGINT', function() 59{ 60 clearInterval(interval); 61 display = null; 62 tm1637.cleanUp(); 63 tm1637 = null; 64 console.log("Interrupt received, exiting..."); 65 process.exit(0); 66}); 67