fork of seeed studio 4-digit display for st nucleo board
Dependencies: Data_Clock_Pair Seeed_Chainable_LED Seeed_Four_Digit_Disp Seeed_IR_Temp_Sensor Seeed_Led_Bar
Fork of Seeed_Grove_4_Digit_Display_Clock by
main.cpp@1:f45925081128, 2014-08-20 (annotated)
- Committer:
- yihui
- Date:
- Wed Aug 20 08:35:13 2014 +0000
- Revision:
- 1:f45925081128
- Parent:
- 0:89330707469d
- Child:
- 2:1ae739c15893
Digital Clock
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
yihui | 0:89330707469d | 1 | #include "mbed.h" |
yihui | 0:89330707469d | 2 | #include "DigitDisplay.h" |
yihui | 0:89330707469d | 3 | |
yihui | 0:89330707469d | 4 | DigitDisplay display(P1_14, P1_13); // 4-Digit Display connected to UART Grove connector |
yihui | 0:89330707469d | 5 | DigitalOut led(LED1); |
yihui | 0:89330707469d | 6 | |
yihui | 1:f45925081128 | 7 | Ticker ticker; |
yihui | 1:f45925081128 | 8 | volatile uint8_t second = 0; |
yihui | 1:f45925081128 | 9 | volatile uint8_t minute = 0; |
yihui | 1:f45925081128 | 10 | volatile uint8_t hour = 12; |
yihui | 1:f45925081128 | 11 | volatile bool colon_enable = false; |
yihui | 1:f45925081128 | 12 | |
yihui | 1:f45925081128 | 13 | void tick() |
yihui | 1:f45925081128 | 14 | { |
yihui | 1:f45925081128 | 15 | colon_enable = !colon_enable; |
yihui | 1:f45925081128 | 16 | display.setColon(colon_enable); |
yihui | 1:f45925081128 | 17 | |
yihui | 1:f45925081128 | 18 | if (colon_enable) { |
yihui | 1:f45925081128 | 19 | second++; |
yihui | 1:f45925081128 | 20 | if (second >= 60) { |
yihui | 1:f45925081128 | 21 | second = 0; |
yihui | 1:f45925081128 | 22 | minute++; |
yihui | 1:f45925081128 | 23 | if (minute >= 60) { |
yihui | 1:f45925081128 | 24 | minute = 0; |
yihui | 1:f45925081128 | 25 | hour++; |
yihui | 1:f45925081128 | 26 | if (hour >= 24) { |
yihui | 1:f45925081128 | 27 | hour = 0; |
yihui | 1:f45925081128 | 28 | } |
yihui | 1:f45925081128 | 29 | } |
yihui | 1:f45925081128 | 30 | |
yihui | 1:f45925081128 | 31 | display.write(hour * 100 + minute); |
yihui | 1:f45925081128 | 32 | } |
yihui | 0:89330707469d | 33 | } |
yihui | 0:89330707469d | 34 | } |
yihui | 1:f45925081128 | 35 | |
yihui | 1:f45925081128 | 36 | int main() { |
yihui | 1:f45925081128 | 37 | display.write(hour * 100 + minute); |
yihui | 1:f45925081128 | 38 | ticker.attach(tick, 0.5); |
yihui | 1:f45925081128 | 39 | while(1) { |
yihui | 1:f45925081128 | 40 | led = !led; |
yihui | 1:f45925081128 | 41 | wait(0.5); |
yihui | 1:f45925081128 | 42 | } |
yihui | 1:f45925081128 | 43 | } |