Sven Erik Knop
main.cpp@0:b3b916d72b56, 2009-11-26 (annotated)
- Committer:
- sknop
- Date:
- Thu Nov 26 11:05:33 2009 +0000
- Revision:
- 0:b3b916d72b56
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| sknop | 0:b3b916d72b56 | 1 | #include "mbed.h" |
| sknop | 0:b3b916d72b56 | 2 | |
| sknop | 0:b3b916d72b56 | 3 | DigitalOut myled1(LED1); |
| sknop | 0:b3b916d72b56 | 4 | DigitalOut myled2(LED2); |
| sknop | 0:b3b916d72b56 | 5 | DigitalOut myled3(LED3); |
| sknop | 0:b3b916d72b56 | 6 | DigitalOut myled4(LED4); |
| sknop | 0:b3b916d72b56 | 7 | |
| sknop | 0:b3b916d72b56 | 8 | DigitalOut * leds[4]; |
| sknop | 0:b3b916d72b56 | 9 | |
| sknop | 0:b3b916d72b56 | 10 | class Dimmer { |
| sknop | 0:b3b916d72b56 | 11 | public: |
| sknop | 0:b3b916d72b56 | 12 | Dimmer() { |
| sknop | 0:b3b916d72b56 | 13 | counter = 0; |
| sknop | 0:b3b916d72b56 | 14 | level = 0; |
| sknop | 0:b3b916d72b56 | 15 | which = 0; |
| sknop | 0:b3b916d72b56 | 16 | } |
| sknop | 0:b3b916d72b56 | 17 | |
| sknop | 0:b3b916d72b56 | 18 | void led_dim() { |
| sknop | 0:b3b916d72b56 | 19 | *(leds[which]) = ( counter <= level ) ? 1 : 0; |
| sknop | 0:b3b916d72b56 | 20 | |
| sknop | 0:b3b916d72b56 | 21 | counter++; |
| sknop | 0:b3b916d72b56 | 22 | if( counter > 100 ) { |
| sknop | 0:b3b916d72b56 | 23 | counter = 0; |
| sknop | 0:b3b916d72b56 | 24 | } |
| sknop | 0:b3b916d72b56 | 25 | } |
| sknop | 0:b3b916d72b56 | 26 | |
| sknop | 0:b3b916d72b56 | 27 | void setLevel(int l) { level = l; } |
| sknop | 0:b3b916d72b56 | 28 | void setWhich(int w) { which = w; } |
| sknop | 0:b3b916d72b56 | 29 | |
| sknop | 0:b3b916d72b56 | 30 | private: |
| sknop | 0:b3b916d72b56 | 31 | int counter; |
| sknop | 0:b3b916d72b56 | 32 | int level; |
| sknop | 0:b3b916d72b56 | 33 | int which; |
| sknop | 0:b3b916d72b56 | 34 | }; |
| sknop | 0:b3b916d72b56 | 35 | |
| sknop | 0:b3b916d72b56 | 36 | int main() { |
| sknop | 0:b3b916d72b56 | 37 | leds[0] = &myled1; |
| sknop | 0:b3b916d72b56 | 38 | leds[1] = &myled2; |
| sknop | 0:b3b916d72b56 | 39 | leds[2] = &myled3; |
| sknop | 0:b3b916d72b56 | 40 | leds[3] = &myled4; |
| sknop | 0:b3b916d72b56 | 41 | |
| sknop | 0:b3b916d72b56 | 42 | int level = 0; |
| sknop | 0:b3b916d72b56 | 43 | int increment = 1; |
| sknop | 0:b3b916d72b56 | 44 | int which = 0; |
| sknop | 0:b3b916d72b56 | 45 | |
| sknop | 0:b3b916d72b56 | 46 | Dimmer dimmer; |
| sknop | 0:b3b916d72b56 | 47 | Ticker timer; |
| sknop | 0:b3b916d72b56 | 48 | |
| sknop | 0:b3b916d72b56 | 49 | timer.attach_us(&dimmer, &Dimmer::led_dim, 20); |
| sknop | 0:b3b916d72b56 | 50 | |
| sknop | 0:b3b916d72b56 | 51 | while(1) { |
| sknop | 0:b3b916d72b56 | 52 | level += increment; |
| sknop | 0:b3b916d72b56 | 53 | |
| sknop | 0:b3b916d72b56 | 54 | if( level >= 100 ) { |
| sknop | 0:b3b916d72b56 | 55 | which++; |
| sknop | 0:b3b916d72b56 | 56 | if( which > 3 ) { |
| sknop | 0:b3b916d72b56 | 57 | which = 3; |
| sknop | 0:b3b916d72b56 | 58 | increment = -1; |
| sknop | 0:b3b916d72b56 | 59 | } |
| sknop | 0:b3b916d72b56 | 60 | else { |
| sknop | 0:b3b916d72b56 | 61 | level = 0; |
| sknop | 0:b3b916d72b56 | 62 | } |
| sknop | 0:b3b916d72b56 | 63 | dimmer.setWhich( which ); |
| sknop | 0:b3b916d72b56 | 64 | } |
| sknop | 0:b3b916d72b56 | 65 | else if( level <= 0 ) { |
| sknop | 0:b3b916d72b56 | 66 | which--; |
| sknop | 0:b3b916d72b56 | 67 | if( which < 0 ) { |
| sknop | 0:b3b916d72b56 | 68 | which = 0; |
| sknop | 0:b3b916d72b56 | 69 | increment = 1; |
| sknop | 0:b3b916d72b56 | 70 | } |
| sknop | 0:b3b916d72b56 | 71 | else { |
| sknop | 0:b3b916d72b56 | 72 | level = 100; |
| sknop | 0:b3b916d72b56 | 73 | } |
| sknop | 0:b3b916d72b56 | 74 | dimmer.setWhich( which ); |
| sknop | 0:b3b916d72b56 | 75 | } |
| sknop | 0:b3b916d72b56 | 76 | |
| sknop | 0:b3b916d72b56 | 77 | dimmer.setLevel(level); |
| sknop | 0:b3b916d72b56 | 78 | wait(0.01); |
| sknop | 0:b3b916d72b56 | 79 | } |
| sknop | 0:b3b916d72b56 | 80 | } |