1 | #define F_CPU 8000000UL
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2 | #include <avr/io.h>
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3 | #include <avr/interrupt.h>
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4 | volatile uint8_t counter = 0;
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5 | volatile uint8_t time_sec_ein;
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6 | volatile uint8_t time_sec_zehn;
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7 | volatile uint8_t time_min_ein;
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8 | volatile uint8_t time_min_zehn;
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9 | volatile uint8_t time_min_set;
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10 |
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11 |
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12 | ISR (TIMER0_OVF_vect)
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13 | {
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14 | counter++;
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15 |
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16 | }
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17 | int sec_ein()
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18 | {
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19 | if (counter==50)
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20 | {
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21 | time_sec_ein++;
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22 | counter = 0;
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23 | }
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24 | if (time_sec_ein == 10)
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25 | {
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26 | time_sec_ein = 0;
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27 | }
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28 |
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29 | }
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30 |
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31 |
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32 | int main(void)
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33 | {
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34 |
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35 | DDRA = 0xff;
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36 | DDRC = 0xff;
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37 |
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38 | TIMSK |= (1 << TOIE0);
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39 | TCCR0 |= (1<< CS00) | (1<< CS01);
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40 | sei();
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41 |
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42 | while(1)
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43 | {
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44 | switch (time_sec_zehn)
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45 | {
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46 | case 1: PORTC |= (1<<PC4);break;
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47 | case 2: PORTC |= (1<<PC6);break;
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48 | case 3: PORTC |= (1<<PC4)|(1<<PC6);break;
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49 | case 4: PORTC |= (1<<PC7);break;
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50 | case 5: PORTC |= (1<<PC7)|(1<<PC4);break;
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51 | case 6: PORTC |= (1<<PC7)|(1<<PC6);break;
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52 | case 7: PORTC |= (1<<PC7)|(1<<PC6)|(1<<PC4);break;
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53 | case 8: PORTC |= (1<<PC5);break;
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54 | case 9: PORTC |= (1<<PC5)|(1<<PC4);break;
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55 |
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56 | }
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57 |
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58 | switch (time_sec_ein)
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59 | {
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60 | case 1: PORTC |= (1<<PC3);break;
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61 | case 2: PORTC |= (1<<PC1);break;
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62 | case 3: PORTC |= (1<<PC3)|(1<<PC1);break;
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63 | case 4: PORTC |= (1<<PC0);break;
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64 | case 5: PORTC |= (1<<PC0)|(1<<PC3);break;
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65 | case 6: PORTC |= (1<<PC0)|(1<<PC1);break;
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66 | case 7: PORTC |= (1<<PC0)|(1<<PC1)|(1<<PC3);break;
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67 | case 8: PORTC |= (1<<PC2);break;
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68 | case 9: PORTC |= (1<<PC2)|(1<<PC3);break;
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69 | }
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70 |
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71 |
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72 | switch (time_min_zehn)
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73 | {
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74 | case 1: PORTA |= (1<<PA3);break;
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75 | case 2: PORTA |= (1<<PA1);break;
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76 | case 3: PORTA |= (1<<PA3)|(1<<PA1);break;
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77 | case 4: PORTA |= (1<<PA0);break;
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78 | case 5: PORTA |= (1<<PA0)|(1<<PA3);break;
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79 | case 6: PORTA |= (1<<PA0)|(1<<PA1);break;
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80 | case 7: PORTA |= (1<<PA0)|(1<<PA1)|(1<<PA3);break;
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81 | case 8: PORTA |= (1<<PA2);break;
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82 | case 9: PORTA |= (1<<PA2)|(1<<PA3);break;
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83 | }
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84 |
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85 | switch (time_min_ein)
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86 | {
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87 | case 1: PORTA |= (1<<PA4);break;
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88 | case 2: PORTA |= (1<<PA6);break;
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89 | case 3: PORTA |= (1<<PA4)|(1<<PA6);break;
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90 | case 4: PORTA |= (1<<PA7);break;
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91 | case 5: PORTA |= (1<<PA7)|(1<<PA4);break;
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92 | case 6: PORTA |= (1<<PA7)|(1<<PA6);break;
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93 | case 7: PORTA |= (1<<PA7)|(1<<PA6)|(1<<PA4);break;
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94 | case 8: PORTA |= (1<<PA5);break;
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95 | case 9: PORTA |= (1<<PA5)|(1<<PA4);break;
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96 | }
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97 |
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98 | }
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99 | }
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