Yihui Xiong / Mbed 2 deprecated clock

A clock with Grove - 4 Digit Display

Dependencies:   DigitDisplay mbed

main.cpp@0:99516934afee, 2014-04-28 (annotated)

Committer:
yihui
Date:
Mon Apr 28 03:05:15 2014 +0000
Revision:
0:99516934afee
initial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:99516934afee 1 #include "mbed.h"
yihui 0:99516934afee 2 #include "DigitDisplay.h"
yihui 0:99516934afee 3
yihui 0:99516934afee 4 DigitDisplay display(P1_14, P1_13); // 4-Digit Display connected to UART Grove connector
yihui 0:99516934afee 5 DigitalOut led(LED1);
yihui 0:99516934afee 6 DigitalOut led2(LED2);
yihui 0:99516934afee 7 Ticker tick;
yihui 0:99516934afee 8 uint8_t hour = 0;
yihui 0:99516934afee 9 uint8_t minute = 0;
yihui 0:99516934afee 10 uint8_t second = 0;
yihui 0:99516934afee 11 uint8_t colon = 0;
yihui 0:99516934afee 12
yihui 0:99516934afee 13 uint8_t display_buffer[4] = {0, 0, 0, 0};
yihui 0:99516934afee 14
yihui 0:99516934afee 15 void handler(void)
yihui 0:99516934afee 16 {
yihui 0:99516934afee 17 display.setColon(colon);
yihui 0:99516934afee 18 led2 = !led2;
yihui 0:99516934afee 19 if (colon) {
yihui 0:99516934afee 20 colon = 0;
yihui 0:99516934afee 21
yihui 0:99516934afee 22 second++;
yihui 0:99516934afee 23 if (second >= 60) {
yihui 0:99516934afee 24 second = 0;
yihui 0:99516934afee 25
yihui 0:99516934afee 26 minute++;
yihui 0:99516934afee 27 if (minute >= 60) {
yihui 0:99516934afee 28 minute = 0;
yihui 0:99516934afee 29
yihui 0:99516934afee 30 hour++;
yihui 0:99516934afee 31 if (hour >= 24) {
yihui 0:99516934afee 32 hour = 0;
yihui 0:99516934afee 33 }
yihui 0:99516934afee 34 }
yihui 0:99516934afee 35
yihui 0:99516934afee 36
yihui 0:99516934afee 37 display_buffer[0] = hour / 10;
yihui 0:99516934afee 38 display_buffer[1] = hour % 10;
yihui 0:99516934afee 39
yihui 0:99516934afee 40 display_buffer[2] = minute / 10;
yihui 0:99516934afee 41 display_buffer[3] = minute % 10;
yihui 0:99516934afee 42
yihui 0:99516934afee 43 display.write(display_buffer);
yihui 0:99516934afee 44 }
yihui 0:99516934afee 45 } else {
yihui 0:99516934afee 46 colon = 1;
yihui 0:99516934afee 47 }
yihui 0:99516934afee 48 }
yihui 0:99516934afee 49
yihui 0:99516934afee 50 int main() {
yihui 0:99516934afee 51 display.write(display_buffer);
yihui 0:99516934afee 52 tick.attach(handler, 0.5);
yihui 0:99516934afee 53 while(1) {
yihui 0:99516934afee 54 led = !led;
yihui 0:99516934afee 55 wait(0.5);
yihui 0:99516934afee 56 }
yihui 0:99516934afee 57 }