1 | #include <c8051f020.h> // SFR declarations
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2 | // Global CONSTANTS-------------------------------------------
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3 | #define SYSCLK 2000000 // approximate SYSCLK frequency in Hz
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4 |
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5 | unsigned char n = 0;
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6 | unsigned char t1 = 0;
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7 | unsigned char t2 = 1;
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8 | sbit SW2 = P3^7;
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9 |
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10 | //Hex-Werte für jede einzelne LED auf dem Board - 29.04.2013-----
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11 | //LED Blau-Lauflicht
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12 | unsigned char code L_LED_Blau2[9] = {0x00,0x01,0x08,0x40,0x00,...,0x00};
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13 | unsigned char code L_LED_Blau3[9] = {0x00,...,0x04,0x20,0x00,0x00,0x00};
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14 |
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15 | // MAIN Routine------------------------------------------------
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16 | void main (void)
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17 | {
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18 | // disable watchdog timer
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19 | WDTCN = 0xde;
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20 | WDTCN = 0xad;
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21 | PORT2_Init ();
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22 | PORT3_Init ();
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23 | Timer3_Init (SYSCLK / 12 / 10); // Init Timer3 to generate interrupts
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24 | // at a 10Hz rate.
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25 | EA =1;
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26 | while (1) { // spin forever
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27 | }
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28 | }
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29 | // PORT_Init - ??? bei Port 3 ???--------------
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30 | void PORT3_Init (void)
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31 | {
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32 | XBR2 = 0x40; // Enable crossbar and weak pull-ups
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33 | P3MDOUT = 0x7f; // enable Port3 Pin1-7 as push-pull output
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34 | // Pin8 ist der Taster dran SW2 = P3^7 ????
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35 | // somit eig. Open Drain
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36 | }
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37 | // Timer3_ISR-----------------------------------------------
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38 | void Timer3_ISR (void) interrupt 14
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39 | {
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40 | TMR3CN &= ~(0x80); // clear TF3
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41 |
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42 | t1 = t1 + 1; //generieren von 1Hz-Taktrate
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43 | if(t1>10)
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44 | {
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45 | n = n + 1; //Zaehlvariablen n für Hex-Array-Stellen
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46 | if(n>8)
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47 | {
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48 | n = 0;
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49 | if (SW2 == 1)
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50 | {
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51 | t2= t2+4;
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52 | if(t2>=23) t2 = 1;
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53 | }
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54 | else
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55 | {
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56 | t2= t2+1;
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57 | if(t2>=23) t2 = 1;
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58 | }
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59 |
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60 | B_LED_P2 = 0; //Variable loeschen
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61 | B_LED_P3 = 0;
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62 | }
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63 |
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64 | if (t2<23)
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65 | {
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66 | switch ( t2 )
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67 | {
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68 | case 1 :
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69 | B_LED_P2 = L_LED_Blau2[0] | L_LED_Rot2[0] | L_LED_Gruen2[0];
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70 | B_LED_P3 = L_LED_Blau3[0] | L_LED_Rot3[0] | L_LED_Gruen3[0];
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71 |
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72 | P2 = B_LED_P2;
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73 | P3 = B_LED_P3;
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74 | break;
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75 |
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76 | case 2 :
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77 | B_LED_P2 = L_LED_Blau2[0] | L_LED_Rot2[0] | L_LED_Gruen2[0];
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78 | B_LED_P3 = L_LED_Blau3[0] | L_LED_Rot3[0] | L_LED_Gruen3[0];
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79 |
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80 | //Port's negierte Variable übergeben, AUS wird zu EIN
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81 | P2 = ~B_LED_P2;
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82 | P3 = ~B_LED_P3;
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83 | break;
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84 |
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85 | case 3 : //Blau-An - Hex-Wert der Arrays mit ODER verknüpft
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86 | B_LED_P2 = L_LED_Blau2[6] | L_LED_Blau2[7];
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87 | B_LED_P3 = L_LED_Blau3[8];
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88 |
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89 | P2 = B_LED_P2;
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90 | P3 = B_LED_P3;
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91 | break;
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92 |
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93 | case 9 : //Blau-Lauflicht - "n" zaehlt von 0-8
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94 | P2 = L_LED_Blau2[n];
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95 | P3 = L_LED_Blau3[n];
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96 | break;
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97 | }
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98 | }
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99 | t1 = 0;
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100 | }
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101 | }
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