
Freedom Seeed Grove 4-Digit Display Example
Dependencies: DigitDisplay mbed
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main.cpp
00001 #include "mbed.h" 00002 #include "DigitDisplay.h" 00003 00004 DigitalOut myled(LED1); 00005 00006 DigitDisplay display(D2, D3); 00007 00008 Ticker tick; 00009 00010 uint8_t hour = 20; 00011 uint8_t minute = 14; 00012 uint8_t second = 0; 00013 00014 void beat() 00015 { 00016 static uint8_t colon = 0; 00017 00018 display.setColon(colon); 00019 if (colon) { 00020 second++; 00021 if (second >= 60) { 00022 second = 0; 00023 minute++; 00024 if (minute >= 60) { 00025 minute = 0; 00026 00027 hour++; 00028 if (hour >= 24) { 00029 hour = 0; 00030 } 00031 display.write(0, hour / 10); 00032 display.write(1, hour % 10); 00033 } 00034 display.write(2, minute / 10); 00035 display.write(3, minute % 10); 00036 } 00037 } 00038 colon = 1 - colon; 00039 } 00040 00041 int main() { 00042 display.write(0, hour / 10); 00043 display.write(1, hour % 10); 00044 display.write(2, minute / 10); 00045 display.write(3, minute % 10); 00046 display.setColon(true); 00047 tick.attach(&beat, 0.5); 00048 while(1) { 00049 myled = 1; 00050 wait(0.5); 00051 myled = 0; 00052 wait(0.5); 00053 } 00054 }
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