1 /* 2 * Author: Mihai Tudor Panu <mihai.tudor.panu (at) 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 #include "tm1637.h" 26 #include <signal.h> 27 #include <unistd.h> 28 #include <sstream> 29 #include <time.h> 30 31 using namespace std; 32 using namespace upm; 33 34 bool run = true; 35 36 void sig_handler(int signo) 37 { 38 if (signo == SIGINT) 39 run = false; 40 } 41 42 int 43 main(int argc, char** argv) 44 { 45 //! [Interesting] 46 bool point = true; 47 int timezone = -7; // Your UTC offset 48 time_t rawtime; 49 struct tm * gmt; 50 char myTime[5]; 51 52 fprintf(stdout, "TM1637 Display Example\n"); 53 signal(SIGINT, sig_handler); 54 55 TM1637 myDisplay = TM1637(0, 1); // TM1637 on pins 0 (clk) and 1 (dio) 56 myDisplay.write(0x39, 0x09, 0x09); // Start a box using 7-segment encoding 57 myDisplay.writeAt(3, ']'); // Finish box using writeAt function 58 sleep(3); // Wait 3 seconds 59 60 while(run) 61 { 62 time(&rawtime); // Update raw time 63 gmt = gmtime(&rawtime); // Get current time 64 65 int hour = (gmt) ? gmt->tm_hour : 0; 66 int min = (gmt) ? gmt->tm_min : 0; 67 // Format and store the time in 24 hour format 68 snprintf(myTime, 5, "%2d%02d", (hour + timezone + 24) % 24, min); 69 70 myDisplay.write(myTime); // Write to display as string 71 myDisplay.setColon(point ^= true); // Toggle the dots on the display 72 sleep(1); // Only update once every second 73 } 74 75 //! [Interesting] 76 return 0; 77 } 78 79 80
