Ist zwar schon etwas älter hier aber egal..
Ich kenne mich zwar nicht mit deinem Chip aus aber versuch mal so:
1 | #include "sfr29.h"
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2 | #include "main.h"
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3 |
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4 | void wait(void)
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5 | {
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6 | unsigned int i=0;
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7 |
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8 | for(i=0;i<=100;i++)
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9 | {
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10 | asm("nop");
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11 | }
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12 |
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13 | }
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14 |
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15 | void lcd_enable(void)
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16 | {
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17 | p3_2 = 1; //Enable high
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18 | wait();
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19 | p3_2 = 0; //Enable low
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20 | }
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21 |
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22 | void lcd_writecom(char com) //Routine für Instruction Befehle
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23 | {
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24 | p3_1=1; //RS high
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25 | p3_3=0; //RW low
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26 | wait();
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27 | p0=com;
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28 | wait();
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29 | lcd_enable();
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30 | }
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31 |
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32 | void lcd_writedat(unsigned char data) //Routine für Instruction Daten
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33 | {
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34 | p3_1=0; //RS low
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35 | p3_3=0; //RW low
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36 | wait();
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37 | p0=data;
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38 | wait();
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39 | lcd_enable();
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40 | }
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41 |
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42 | void lcd_init(void)
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43 | {
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44 | p3_0 = 0; //Reset low
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45 | p3_2 = 0; //Enable low
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46 | p3_1 = 0; //RS low
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47 | wait();
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48 | p3_0 = 1; //Reset high
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49 |
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50 | lcd_writecom(0x00); // mode con
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51 | wait();
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52 | lcd_writedat(0x3C); // display on
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53 | wait();
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54 |
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55 | lcd_writecom(0x01); // character pitch
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56 | wait();
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57 | lcd_writedat(0x77); // 8x8 chars
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58 | wait();
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59 |
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60 | lcd_writecom(0x02); // characters per line
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61 | wait();
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62 | lcd_writedat(19); // 20
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63 | wait();
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64 |
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65 | lcd_writecom(0x03); // set duty
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66 | wait();
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67 | lcd_writedat(0x4F); // 1/80
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68 | wait();
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69 |
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70 | lcd_writecom(0x04); // set cursor position
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71 | wait();
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72 | lcd_writedat(0x07); // Cp=8
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73 | wait();
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74 |
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75 | lcd_writecom(0x08); // startadress low
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76 | wait();
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77 | lcd_writedat(0x00); // 0
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78 | wait();
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79 |
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80 | lcd_writecom(0x09); // startadress high
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81 | wait();
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82 | lcd_writedat(0x00); // 0
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83 | wait();
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84 |
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85 | lcd_writecom(0x0A); // startadress high
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86 | wait();
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87 | lcd_writedat(0x00); // 0
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88 | wait();
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89 |
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90 | lcd_writecom(0x0B); // startadress high
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91 | wait();
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92 | lcd_writedat(0x00); // 0
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93 | wait();
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94 | }
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95 |
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96 | void lcd_writebyte(unsigned char byte)
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97 | {
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98 | lcd_writecom(0x0C);
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99 | lcd_writedat(byte);
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100 | }
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101 |
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102 | void lcd_setadress( unsigned char x, unsigned char y )
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103 | {
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104 | unsigned int adress;
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105 | adress = y*20+x;
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106 | lcd_writecom(0x0A); // writeadress low
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107 | lcd_writedat(adress&255);
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108 | lcd_writecom(0x0B); // writeadress high
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109 | lcd_writedat(adress/256);
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110 | }
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111 |
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112 | void lcd_clear( void )
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113 | {
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114 | unsigned int i;
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115 | lcd_setadress( 0,0 );
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116 | for (i=0; i<160/8*80; i++)
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117 | lcd_writebyte( 0 );
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118 |
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119 | }
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120 |
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121 |
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122 | void main(void)
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123 | {
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124 | //Port deklaration für GLCD
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125 | prcr = 0x04;
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126 | /* Set to 80 pin chip */
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127 | pacr = 0x03;
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128 |
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129 | pd0=0xFF; //Data
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130 | pd3_0=1; //Reset
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131 | pd3_1=1; //RS
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132 | pd3_2=1; //Enable
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133 | pd3_3=1; //R/W
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134 | pd3_4=1; //Chip Enable
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135 |
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136 |
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137 | lcd_init();
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138 | lcd_clear();
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139 | lcd_setadress(0,0);
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140 | lcd_writebyte(0x55);
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141 |
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142 | while(1)
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143 | {
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144 |
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145 | }
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146 | }
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Und sicher, dass Ausgänge mit "1" aktiviert sind? Bei AVR ist es glaub
so.. Ich weiß nur, dass bei PICs "1" Eingang konfiguriert.
LG Nico
