Hallo,
hab nun mein erstes Mikrokontrollerprojekt
(Beitrag "AVR Atmega8 Binär Uhr Schaltplan") zusammengelötet und bin
dabei es mittels USBprog zu programmieren. Nun hab ich das Problem, das
die Verbindung manchmal funktioniert und manchmal nicht. Zudem bleibt
mein erstes Program manchmal hängen, bzw. es leuchten nicht alle LEDs
die eigentlich leuchten sollten, läuft dann aber urplötzlich normal
weiter.
Es liegt wohl irgendwie an der Elektronik, trotzdem poste ich mal den
C-Code. Meine Vermutung ist, das der Quarz aus dem Takt kommt, aber
ehrlich gesagt hab ich keine Ahnung.
1 | #include <avr/io.h>
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2 |
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3 |
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4 | #define F_CPU 1000000UL
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5 |
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6 | #include <util/delay.h>
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7 |
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8 |
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9 | int main()
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10 | {
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11 |
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12 | uint8_t i;
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13 | uint8_t k;
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14 |
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15 | i = 0;
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16 | k = 20;
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17 |
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18 | // Initialisierung IO-Ports
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19 | // 1 = Ausgang; 0 = Eingang
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20 |
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21 | DDRC = 0b00111111; // 00111111 PC0-PC5 Ausgang
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22 | PORTC = 0b00000000; // 00000000
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23 |
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24 | DDRB = 0b00000001; // 00000001 PB0 Ausgang
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25 | PORTB = 0b00000000; // 00000000
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26 |
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27 | DDRD = 0b11111011; // 11111011 PD3-PD7 Ausgang
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28 | PORTD = 0b01111011; // 01111011 PD0+PD1+PD3-PD6 Ein
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29 |
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30 |
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31 | while(1) // Unendlich lang wiederholen
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32 | {
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33 | while(i < k)
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34 | {
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35 | i++;
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36 |
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37 | PORTD = 0b01111010;
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38 | PORTC = 0b00111111;
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39 | _delay_ms(10);
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40 |
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41 | PORTD = 0b01111001;
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42 | PORTC = 0b00000001;
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43 | _delay_ms(10);
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44 |
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45 | PORTD = 0b01110011;
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46 | PORTC = 0b00000001;
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47 | _delay_ms(10);
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48 |
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49 | PORTD = 0b01101011;
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50 | PORTC = 0b00000001;
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51 | _delay_ms(10);
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52 |
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53 | PORTD = 0b01011011;
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54 | PORTC = 0b00000001;
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55 | _delay_ms(10);
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56 |
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57 | PORTD = 0b00111011;
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58 | PORTC = 0b00100001;
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59 | _delay_ms(10);
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60 | }
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61 | i = 0;
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62 | while(i < k)
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63 | {
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64 | i++;
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65 |
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66 | PORTD = 0b01111010;
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67 | PORTC = 0b00000000;
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68 | _delay_ms(10);
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69 |
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70 | PORTD = 0b01111001;
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71 | PORTC = 0b00111110;
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72 | _delay_ms(10);
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73 |
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74 | PORTD = 0b01110011;
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75 | PORTC = 0b00000010;
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76 | _delay_ms(10);
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77 |
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78 | PORTD = 0b01101011;
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79 | PORTC = 0b00000010;
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80 | _delay_ms(10);
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81 |
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82 | PORTD = 0b01011011;
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83 | PORTC = 0b00000010;
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84 | _delay_ms(10);
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85 |
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86 | PORTD = 0b00111011;
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87 | PORTC = 0b00000010;
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88 | _delay_ms(10);
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89 | }
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90 | i = 0;
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91 | while(i < k)
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92 | {
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93 | i++;
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94 |
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95 | PORTD = 0b01111010;
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96 | PORTC = 0b00000000;
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97 | _delay_ms(10);
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98 |
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99 | PORTD = 0b01111001;
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100 | PORTC = 0b00000000;
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101 | _delay_ms(10);
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102 |
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103 | PORTD = 0b01110011;
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104 | PORTC = 0b00111100;
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105 | _delay_ms(10);
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106 |
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107 | PORTD = 0b01101011;
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108 | PORTC = 0b00000100;
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109 | _delay_ms(10);
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110 |
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111 | PORTD = 0b01011011;
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112 | PORTC = 0b00000100;
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113 | _delay_ms(10);
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114 |
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115 | PORTD = 0b00111011;
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116 | PORTC = 0b00000100;
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117 | _delay_ms(10);
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118 | }
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119 | i = 0;
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120 | while(i < k)
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121 | {
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122 | i++;
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123 |
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124 | PORTD = 0b01111010;
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125 | PORTC = 0b00000000;
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126 | _delay_ms(10);
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127 |
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128 | PORTD = 0b01111001;
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129 | PORTC = 0b00000000;
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130 | _delay_ms(10);
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131 |
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132 | PORTD = 0b01110011;
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133 | PORTC = 0b00000000;
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134 | _delay_ms(10);
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135 |
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136 | PORTD = 0b01101011;
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137 | PORTC = 0b00111000;
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138 | _delay_ms(10);
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139 |
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140 | PORTD = 0b01011011;
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141 | PORTC = 0b00001000;
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142 | _delay_ms(10);
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143 |
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144 | PORTD = 0b00111011;
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145 | PORTC = 0b00001000;
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146 | _delay_ms(10);
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147 | }
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148 | i = 0;
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149 | while(i < k)
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150 | {
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151 | i++;
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152 |
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153 | PORTD = 0b01111010;
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154 | PORTC = 0b00000000;
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155 | _delay_ms(10);
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156 |
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157 | PORTD = 0b01111001;
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158 | PORTC = 0b00000000;
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159 | _delay_ms(10);
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160 |
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161 | PORTD = 0b01110011;
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162 | PORTC = 0b00000000;
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163 | _delay_ms(10);
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164 |
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165 | PORTD = 0b01101011;
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166 | PORTC = 0b00000000;
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167 | _delay_ms(10);
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168 |
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169 | PORTD = 0b01011011;
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170 | PORTC = 0b00110000;
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171 | _delay_ms(10);
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172 |
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173 | PORTD = 0b00111011;
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174 | PORTC = 0b00010000;
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175 | _delay_ms(10);
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176 | }
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177 | i = 0;
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178 | }
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179 | }
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