Krishna Kaushal Panduru
a program to display timer in hh:mm:ss format. revisions will be made to set-up timer, alarm etc.
main.cpp@0:3330756dbb42, 2011-03-28 (annotated)
- Committer:
- kaushalpkk
- Date:
- Mon Mar 28 15:51:48 2011 +0000
- Revision:
- 0:3330756dbb42
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| kaushalpkk | 0:3330756dbb42 | 1 | #include "mbed.h" |
| kaushalpkk | 0:3330756dbb42 | 2 | |
| kaushalpkk | 0:3330756dbb42 | 3 | //LEDs to indicate key presses |
| kaushalpkk | 0:3330756dbb42 | 4 | DigitalOut myled1(LED1); |
| kaushalpkk | 0:3330756dbb42 | 5 | DigitalOut myled2(LED2); |
| kaushalpkk | 0:3330756dbb42 | 6 | DigitalOut myled3(LED3); |
| kaushalpkk | 0:3330756dbb42 | 7 | |
| kaushalpkk | 0:3330756dbb42 | 8 | //init serial trx throught USB |
| kaushalpkk | 0:3330756dbb42 | 9 | Serial pc(USBTX, USBRX); |
| kaushalpkk | 0:3330756dbb42 | 10 | |
| kaushalpkk | 0:3330756dbb42 | 11 | //init 1 sec timer |
| kaushalpkk | 0:3330756dbb42 | 12 | Ticker secs; |
| kaushalpkk | 0:3330756dbb42 | 13 | |
| kaushalpkk | 0:3330756dbb42 | 14 | //variables |
| kaushalpkk | 0:3330756dbb42 | 15 | char x,y,z,t,u,min = 0,sec = 0,hr = 0; |
| kaushalpkk | 0:3330756dbb42 | 16 | |
| kaushalpkk | 0:3330756dbb42 | 17 | //mytick give a second of delay and print the time out. |
| kaushalpkk | 0:3330756dbb42 | 18 | void mytick() { |
| kaushalpkk | 0:3330756dbb42 | 19 | sec++; |
| kaushalpkk | 0:3330756dbb42 | 20 | if (sec >= 59) { |
| kaushalpkk | 0:3330756dbb42 | 21 | sec = 0; |
| kaushalpkk | 0:3330756dbb42 | 22 | min ++; |
| kaushalpkk | 0:3330756dbb42 | 23 | if (min >= 59) { |
| kaushalpkk | 0:3330756dbb42 | 24 | min = 0; |
| kaushalpkk | 0:3330756dbb42 | 25 | hr ++; |
| kaushalpkk | 0:3330756dbb42 | 26 | if (hr >= 23) { |
| kaushalpkk | 0:3330756dbb42 | 27 | hr = 0; |
| kaushalpkk | 0:3330756dbb42 | 28 | } |
| kaushalpkk | 0:3330756dbb42 | 29 | } |
| kaushalpkk | 0:3330756dbb42 | 30 | } |
| kaushalpkk | 0:3330756dbb42 | 31 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 32 | } |
| kaushalpkk | 0:3330756dbb42 | 33 | |
| kaushalpkk | 0:3330756dbb42 | 34 | //software entry point |
| kaushalpkk | 0:3330756dbb42 | 35 | void main(void){ |
| kaushalpkk | 0:3330756dbb42 | 36 | //print general details |
| kaushalpkk | 0:3330756dbb42 | 37 | pc.printf("hour up/down = q/a\n\r"); |
| kaushalpkk | 0:3330756dbb42 | 38 | pc.printf("minute up/down = w/s\n\r"); |
| kaushalpkk | 0:3330756dbb42 | 39 | pc.printf("second up/down = e/d\r\n\n\n"); |
| kaushalpkk | 0:3330756dbb42 | 40 | //activate the timer |
| kaushalpkk | 0:3330756dbb42 | 41 | secs.attach(&mytick,1); |
| kaushalpkk | 0:3330756dbb42 | 42 | |
| kaushalpkk | 0:3330756dbb42 | 43 | //do forever |
| kaushalpkk | 0:3330756dbb42 | 44 | while (1) { |
| kaushalpkk | 0:3330756dbb42 | 45 | |
| kaushalpkk | 0:3330756dbb42 | 46 | myled1 = 0; |
| kaushalpkk | 0:3330756dbb42 | 47 | myled2 = 0; |
| kaushalpkk | 0:3330756dbb42 | 48 | myled3 = 0; |
| kaushalpkk | 0:3330756dbb42 | 49 | //if any key is pressed, enter this portion of code |
| kaushalpkk | 0:3330756dbb42 | 50 | if (pc.readable() == 1) { |
| kaushalpkk | 0:3330756dbb42 | 51 | //get the character |
| kaushalpkk | 0:3330756dbb42 | 52 | char ch = pc.getc(); |
| kaushalpkk | 0:3330756dbb42 | 53 | switch (ch) { |
| kaushalpkk | 0:3330756dbb42 | 54 | case 'q': |
| kaushalpkk | 0:3330756dbb42 | 55 | if (hr >= 23) |
| kaushalpkk | 0:3330756dbb42 | 56 | hr =0; |
| kaushalpkk | 0:3330756dbb42 | 57 | myled1 = 1; |
| kaushalpkk | 0:3330756dbb42 | 58 | hr++; |
| kaushalpkk | 0:3330756dbb42 | 59 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 60 | break; |
| kaushalpkk | 0:3330756dbb42 | 61 | case 'a': |
| kaushalpkk | 0:3330756dbb42 | 62 | if (hr >= 23) |
| kaushalpkk | 0:3330756dbb42 | 63 | hr =0; |
| kaushalpkk | 0:3330756dbb42 | 64 | myled1 = 1; |
| kaushalpkk | 0:3330756dbb42 | 65 | hr--; |
| kaushalpkk | 0:3330756dbb42 | 66 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 67 | break; |
| kaushalpkk | 0:3330756dbb42 | 68 | case 'w': |
| kaushalpkk | 0:3330756dbb42 | 69 | if (min >= 59) |
| kaushalpkk | 0:3330756dbb42 | 70 | min =0; |
| kaushalpkk | 0:3330756dbb42 | 71 | myled2 = 1; |
| kaushalpkk | 0:3330756dbb42 | 72 | min++; |
| kaushalpkk | 0:3330756dbb42 | 73 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 74 | break; |
| kaushalpkk | 0:3330756dbb42 | 75 | case 's': |
| kaushalpkk | 0:3330756dbb42 | 76 | if (min >= 59) |
| kaushalpkk | 0:3330756dbb42 | 77 | min =0; |
| kaushalpkk | 0:3330756dbb42 | 78 | myled2 = 1; |
| kaushalpkk | 0:3330756dbb42 | 79 | min--; |
| kaushalpkk | 0:3330756dbb42 | 80 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 81 | break; |
| kaushalpkk | 0:3330756dbb42 | 82 | case 'e': |
| kaushalpkk | 0:3330756dbb42 | 83 | if (sec >= 59) |
| kaushalpkk | 0:3330756dbb42 | 84 | sec =0; |
| kaushalpkk | 0:3330756dbb42 | 85 | myled3 = 1; |
| kaushalpkk | 0:3330756dbb42 | 86 | sec++; |
| kaushalpkk | 0:3330756dbb42 | 87 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 88 | break; |
| kaushalpkk | 0:3330756dbb42 | 89 | case 'd': |
| kaushalpkk | 0:3330756dbb42 | 90 | if (sec >= 59) |
| kaushalpkk | 0:3330756dbb42 | 91 | sec =0; |
| kaushalpkk | 0:3330756dbb42 | 92 | myled3 = 1; |
| kaushalpkk | 0:3330756dbb42 | 93 | sec--; |
| kaushalpkk | 0:3330756dbb42 | 94 | pc.printf(" %d:%d:%d \r",hr,min,sec); |
| kaushalpkk | 0:3330756dbb42 | 95 | break; |
| kaushalpkk | 0:3330756dbb42 | 96 | } |
| kaushalpkk | 0:3330756dbb42 | 97 | } |
| kaushalpkk | 0:3330756dbb42 | 98 | } |
| kaushalpkk | 0:3330756dbb42 | 99 | } |