1 | #include <p18cxxx.h>
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2 | #include <delays.h>
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3 |
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4 |
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5 | void lcd_init(void);
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6 | void OutLcdControl(unsigned char Daten);
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7 | void OutLcdDaten(unsigned char Daten);
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8 | void DelayFor18TCY(void);
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9 | void Delay_30m(void);
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10 | void Delay_5m(void);
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11 | void Delay_100u(void);
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12 | void Delay_1m(void);
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13 | void Delay_50m(void);
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14 |
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15 |
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16 | #define enable LATBbits.LATB3
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17 | #define rs LATBbits.LATB2
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18 | #define rw LATBbits.LATB1
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19 |
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20 |
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21 | void lcd_init (void)
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22 | {
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23 | Delay_50m(); //laaaange Warten
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24 | Delay_50m();
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25 | Delay_50m();
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26 | Delay_50m();
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27 | Delay_50m();
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28 | Delay_50m();
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29 | Delay_50m();
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30 | Delay_50m();
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31 | Delay_50m();
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32 | Delay_50m();
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33 |
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34 | LATB = 0b00110000; //1
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35 | enable = 1;
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36 | DelayFor18TCY();
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37 | enable = 0;
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38 |
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39 | Delay_5m();
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40 |
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41 | LATB = 0b00110000; //2
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42 | enable = 1;
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43 | DelayFor18TCY();
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44 | enable = 0;
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45 |
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46 | Delay_5m();
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47 |
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48 | LATB = 0b00110000; //3
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49 | enable = 1;
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50 | DelayFor18TCY();
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51 | enable = 0;
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52 |
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53 | Delay_5m();
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54 |
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55 | LATB = 0b00100000; //4
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56 | enable = 1;
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57 | DelayFor18TCY();
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58 | enable = 0;
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59 |
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60 | Delay_5m();
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61 |
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62 | OutLcdControl(0b00000001); //löschen und cusor home
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63 | Delay_5m();
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64 | OutLcdControl(0b00101000); //5 function set, 4-bit 2-zeilig, 5x7
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65 | Delay_5m();
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66 | OutLcdControl(0b00001000); //6 display off
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67 | Delay_5m();
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68 | OutLcdControl(0b00000110); //7 entry mode, increment, disable display-shift
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69 | Delay_5m();
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70 | OutLcdControl(0b00000011); //8 cursor home, cursor home
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71 | Delay_5m();
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72 | OutLcdControl(0b00001111); //9 display on
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73 | Delay_5m();
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74 |
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75 | return;
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76 |
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77 | // OutLcdDaten('A');
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78 |
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79 | }
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80 |
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81 | void OutLcdControl(unsigned char Daten)
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82 | {
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83 | Delay_5m(); //warten bis Display bereit ist
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84 | LATB = Daten & 0xF0;
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85 |
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86 | enable = 1; //Daten senden
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87 | Delay_1m(); //DelayFor18TCY();
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88 | enable = 0;
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89 |
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90 | Delay_1m(); //DelayFor18TCY(); //warten
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91 |
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92 | Daten = Daten << 4; //untere Daten an Position schiebebn
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93 |
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94 | LATB = Daten & 0xF0;
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95 |
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96 | enable = 1; // Daten senden
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97 | Delay_1m(); //DelayFor18TCY()
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98 | enable = 0;
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99 |
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100 | Delay_1m(); //DelayFor18TCY(); //warten
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101 | //fertig
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102 | }
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103 | //====================================================================
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104 | void OutLcdDaten(unsigned char Daten)
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105 | {
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106 | DelayFor18TCY(); //warten bis Display bereit ist
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107 | LATB = Daten & 0xF0;
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108 | rs = 1; //Daten senden
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109 |
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110 | enable = 1; //Daten senden
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111 | DelayFor18TCY();
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112 | enable = 0;
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113 |
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114 | Delay_5m(); //warten
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115 |
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116 | Daten = Daten << 4; //untere Daten an Position schiebebn
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117 |
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118 | LATB = Daten & 0xF0;
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119 | rs = 1; //Daten senden
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120 |
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121 | enable = 1; // Daten senden
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122 | DelayFor18TCY();
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123 | enable = 0;
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124 |
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125 | Delay_5m(); //warten
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126 | //fertig
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127 | }
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128 | //====================================================================
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129 |
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130 |
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131 |
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132 |
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133 |
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134 | void DelayFor18TCY(void)
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135 | {
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136 | Nop();
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137 | Nop();
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138 | Nop();
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139 | Nop();
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140 | Nop();
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141 | Nop();
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142 | Nop();
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143 | Nop();
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144 | Nop();
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145 | Nop();
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146 | Nop();
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147 | Nop();
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148 | Nop();
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149 | Nop();
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150 | }
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151 |
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152 | void Delay_30m(void)
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153 | {
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154 | Delay1KTCYx(56); //Delay of 15ms
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155 | return;
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156 | }
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157 | void Delay_5m(void)
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158 | {
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159 | Delay1KTCYx(28); //Delay 5ms
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160 | return;
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161 | }
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162 | void Delay_100u(void)
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163 | {
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164 | Delay100TCYx(36); //100µs
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165 | }
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166 | void Delay_1m(void)
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167 | {
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168 | Delay1KTCYx(36); //1ms
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169 | }
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170 | void Delay_50m(void)
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171 | {
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172 | Delay1KTCYx(180); //Delay of 50ms
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173 | return;
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174 | }
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