Auch auf die Gefahr hin, dass ich einen Preis für den schäbigsten Code
bekomme, möchte ich hier in diesem (älteren) Thread meinen Code posten,
der es mir zusammen mit einem Atmega328 (20 MhZ) gerade ermöglicht hat,
wieder auf den HC06 zugreifen zu können, indem der UART "einfach"
manuell programmiert wurde. Zunächst hatte ich vor, die ganze Sache in
Assembler zu implementieren, aber der Compiler hat aus dem C-Code einen
ausreichend genauen Code (für 20 MhZ(!)) basteln können.
1 | void uart_reparatur(void)
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2 | {
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3 | DDRD |= (1<<PD1); //TXD=Ausgang
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4 |
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5 | //Startbit
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6 | PORTD &=~ (1<<PD1); //0
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7 | _delay_us(1);
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8 | //A 65 0100 0001
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9 | PORTD |= (1<<PD1); //1
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10 | _delay_us(1);
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11 | PORTD &=~ (1<<PD1); //0
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12 | _delay_us(1);
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13 | PORTD &=~ (1<<PD1); //0
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14 | _delay_us(1);
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15 | PORTD &=~ (1<<PD1); //0
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16 | _delay_us(1);
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17 | PORTD &=~ (1<<PD1); //0
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18 | _delay_us(1);
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19 | PORTD &=~ (1<<PD1); //0
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20 | _delay_us(1);
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21 | PORTD |= (1<<PD1); //1
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22 | _delay_us(1);
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23 | PORTD &=~ (1<<PD1); //0
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24 | _delay_us(1);
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25 | //Stopbit
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26 | PORTD |= (1<<PD1); //1
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27 | _delay_us(1);
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28 |
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29 | _delay_us(5);
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30 |
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31 |
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32 | //Startbit
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33 | PORTD &=~ (1<<PD1); //0
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34 | _delay_us(1);
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35 | //T 84 0101 0100
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36 | PORTD &=~ (1<<PD1); //0
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37 | _delay_us(1);
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38 | PORTD &=~ (1<<PD1); //0
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39 | _delay_us(1);
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40 | PORTD |= (1<<PD1); //1
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41 | _delay_us(1);
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42 | PORTD &=~ (1<<PD1); //0
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43 | _delay_us(1);
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44 | PORTD |= (1<<PD1); //1
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45 | _delay_us(1);
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46 | PORTD &=~ (1<<PD1); //0
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47 | _delay_us(1);
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48 | PORTD |= (1<<PD1); //1
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49 | _delay_us(1);
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50 | PORTD &=~ (1<<PD1); //0
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51 | _delay_us(1);
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52 | //Stopbit
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53 | PORTD |= (1<<PD1); //1
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54 | _delay_us(1);
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55 |
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56 | _delay_us(5);
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57 |
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58 | //Startbit
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59 | PORTD &=~ (1<<PD1); //0
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60 | _delay_us(1);
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61 | //+ 43 0010 1011
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62 | PORTD |= (1<<PD1); //1
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63 | _delay_us(1);
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64 | PORTD |= (1<<PD1); //1
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65 | _delay_us(1);
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66 | PORTD &=~ (1<<PD1); //0
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67 | _delay_us(1);
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68 | PORTD |= (1<<PD1); //1
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69 | _delay_us(1);
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70 | PORTD &=~ (1<<PD1); //0
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71 | _delay_us(1);
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72 | PORTD |= (1<<PD1); //1
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73 | _delay_us(1);
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74 | PORTD &=~ (1<<PD1); //0
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75 | _delay_us(1);
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76 | PORTD &=~ (1<<PD1); //0
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77 | _delay_us(1);
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78 | //Stopbit
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79 | PORTD |= (1<<PD1); //1
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80 | _delay_us(1);
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81 |
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82 | _delay_us(5);
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83 |
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84 |
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85 | //Startbit
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86 | PORTD &=~ (1<<PD1); //0
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87 | _delay_us(1);
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88 | //B 66 0100 0010
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89 | PORTD &=~ (1<<PD1); //0
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90 | _delay_us(1);
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91 | PORTD |= (1<<PD1); //1
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92 | _delay_us(1);
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93 | PORTD &=~ (1<<PD1); //0
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94 | _delay_us(1);
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95 | PORTD &=~ (1<<PD1); //0
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96 | _delay_us(1);
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97 | PORTD &=~ (1<<PD1); //0
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98 | _delay_us(1);
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99 | PORTD &=~ (1<<PD1); //0
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100 | _delay_us(1);
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101 | PORTD |= (1<<PD1); //1
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102 | _delay_us(1);
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103 | PORTD &=~ (1<<PD1); //0
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104 | _delay_us(1);
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105 | //Stopbit
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106 | PORTD |= (1<<PD1); //1
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107 | _delay_us(1);
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108 |
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109 |
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110 | _delay_us(5);
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111 |
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112 | //Startbit
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113 | PORTD &=~ (1<<PD1); //0
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114 | _delay_us(1);
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115 | //A 65 0100 0001
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116 | PORTD |= (1<<PD1); //1
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117 | _delay_us(1);
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118 | PORTD &=~ (1<<PD1); //0
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119 | _delay_us(1);
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120 | PORTD &=~ (1<<PD1); //0
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121 | _delay_us(1);
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122 | PORTD &=~ (1<<PD1); //0
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123 | _delay_us(1);
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124 | PORTD &=~ (1<<PD1); //0
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125 | _delay_us(1);
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126 | PORTD &=~ (1<<PD1); //0
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127 | _delay_us(1);
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128 | PORTD |= (1<<PD1); //1
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129 | _delay_us(1);
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130 | PORTD &=~ (1<<PD1); //0
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131 | _delay_us(1);
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132 | //Stopbit
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133 | PORTD |= (1<<PD1); //1
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134 | _delay_us(1);
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135 |
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136 |
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137 | _delay_us(5);
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138 |
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139 | //Startbit
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140 | PORTD &=~ (1<<PD1); //0
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141 | _delay_us(1);
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142 | //U 85 0101 0101
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143 | PORTD |= (1<<PD1); //1
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144 | _delay_us(1);
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145 | PORTD &=~ (1<<PD1); //0
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146 | _delay_us(1);
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147 | PORTD |= (1<<PD1); //1
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148 | _delay_us(1);
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149 | PORTD &=~ (1<<PD1); //0
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150 | _delay_us(1);
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151 | PORTD |= (1<<PD1); //1
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152 | _delay_us(1);
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153 | PORTD &=~ (1<<PD1); //0
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154 | _delay_us(1);
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155 | PORTD |= (1<<PD1); //1
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156 | _delay_us(1);
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157 | PORTD &=~ (1<<PD1); //0
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158 | _delay_us(1);
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159 | //Stopbit
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160 | PORTD |= (1<<PD1); //1
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161 | _delay_us(1);
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162 |
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163 |
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164 | _delay_us(5);
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165 |
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166 | //Startbit
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167 | PORTD &=~ (1<<PD1); //0
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168 | _delay_us(1);
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169 | //D 68 0100 0100
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170 | PORTD &=~ (1<<PD1); //0
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171 | _delay_us(1);
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172 | PORTD &=~ (1<<PD1); //0
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173 | _delay_us(1);
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174 | PORTD |= (1<<PD1); //1
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175 | _delay_us(1);
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176 | PORTD &=~ (1<<PD1); //0
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177 | _delay_us(1);
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178 | PORTD &=~ (1<<PD1); //0
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179 | _delay_us(1);
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180 | PORTD &=~ (1<<PD1); //0
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181 | _delay_us(1);
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182 | PORTD |= (1<<PD1); //1
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183 | _delay_us(1);
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184 | PORTD &=~ (1<<PD1); //0
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185 | _delay_us(1);
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186 | //Stopbit
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187 | PORTD |= (1<<PD1); //1
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188 | _delay_us(1);
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189 |
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190 |
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191 | _delay_us(5);
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192 |
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193 |
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194 | //Startbit
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195 | PORTD &=~ (1<<PD1); //0
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196 | _delay_us(1);
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197 | //8 56 0011 1000
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198 | PORTD &=~ (1<<PD1); //0
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199 | _delay_us(1);
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200 | PORTD &=~ (1<<PD1); //0
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201 | _delay_us(1);
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202 | PORTD &=~ (1<<PD1); //0
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203 | _delay_us(1);
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204 | PORTD |= (1<<PD1); //1
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205 | _delay_us(1);
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206 | PORTD |= (1<<PD1); //1
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207 | _delay_us(1);
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208 | PORTD |= (1<<PD1); //1
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209 | _delay_us(1);
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210 | PORTD &=~ (1<<PD1); //0
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211 | _delay_us(1);
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212 | PORTD &=~ (1<<PD1); //0
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213 | _delay_us(1);
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214 | //Stopbit
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215 | PORTD |= (1<<PD1); //1
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216 | _delay_us(1);
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217 |
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218 |
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219 | }
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