1 | // lcd.h
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2 | typedef void (*TPF)(void);
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3 | typedef void (*TPFu8)(u8 data);
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4 |
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5 | typedef struct
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6 | {
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7 | TPF lcdinit;
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8 | TPFu8 lcdcommand;
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9 | TPFu8 lcddata;
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10 | u8 zeilenadr[4];
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11 | } display_t;
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12 |
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13 | // lcd.c
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14 | void lcd_init( display_t *lcd )
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15 | {
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16 | (lcd->lcdinit)();
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17 | }
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18 |
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19 | void lcd_command( uint8_t data, display_t *lcd){
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20 | (lcd->lcdcommand)(data);
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21 | _delay_us(LCD_COMMAND_US );
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22 | }
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23 |
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24 | void lcd_data( uint8_t data, display_t *lcd){
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25 | (lcd->lcddata)(data);
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26 | _delay_us( LCD_WRITEDATA_US );
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27 | }
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28 |
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29 | // * * *
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30 |
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31 | void lcd_string_P( PGM_P data, display_t *lcd ){
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32 | uint8_t tmp;
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33 |
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34 | tmp=pgm_read_byte(data);
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35 | while( tmp != '\0' ) {
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36 | (lcd->lcddata)(tmp);
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37 | _delay_us( LCD_WRITEDATA_US );
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38 | data++;
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39 | tmp = pgm_read_byte(data);
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40 | }
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41 | }
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42 |
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43 | // lcd_dip203g.h
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44 | #define LCD_ZEICHEN_PRO_ZEILE 20
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45 | #define LCD_DDADR_LINE1 0x00
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46 | #define LCD_DDADR_LINE2 (LCD_DDADR_LINE1 + LCD_ZEICHEN_PRO_ZEILE)
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47 | #define LCD_DDADR_LINE3 0x40
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48 | #define LCD_DDADR_LINE4 (LCD_DDADR_LINE3 + LCD_ZEICHEN_PRO_ZEILE)
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49 |
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50 | #define BIT_RS 0
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51 | #define BIT_E 1
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52 |
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53 | extern display_t dip203g;
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54 | static inline void lcd_dip203g_out( u8 data, u8 rs )
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55 | {
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56 | u8 a;
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57 | lcd_adrmode();
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58 |
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59 | a = (data & 0xf0);
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60 | if(rs) a |= (1<<BIT_RS);
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61 |
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62 |
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63 | spi_master_transmit(a);
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64 | spi_intern_start();
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65 | asm volatile("lpm");
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66 | spi_intern_stop();
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67 | asm volatile("lpm");
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68 |
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69 | spi_master_transmit(a | (1<<BIT_E));
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70 | spi_intern_start();
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71 | asm volatile("lpm");
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72 | spi_intern_stop();
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73 | asm volatile("lpm");
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74 |
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75 | spi_master_transmit(a);
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76 | spi_intern_start();
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77 | asm volatile("lpm");
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78 | spi_intern_stop();
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79 | asm volatile("lpm");
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80 | }
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81 |
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82 | // lcd_dip203g.c
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83 | display_t dip203g;
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84 |
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85 | void lcd_dip203g_structinit(void){
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86 | dip203g.lcdinit = lcd_dip203g_init;
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87 | dip203g.lcdcommand = lcd_dip203g_command;
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88 | dip203g.lcddata = lcd_dip203g_data;
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89 | dip203g.zeilenadr[0] = LCD_DDADR_LINE1;
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90 | dip203g.zeilenadr[1] = LCD_DDADR_LINE2;
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91 | dip203g.zeilenadr[2] = LCD_DDADR_LINE3;
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92 | dip203g.zeilenadr[3] = LCD_DDADR_LINE4;
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93 | }
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94 |
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95 | void lcd_dip203g_init(void){
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96 | _delay_ms( LCD_BOOTUP_MS );
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97 |
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98 | lcd_dip203g_out( LCD_SOFT_RESET,0 ); // 0x30
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99 |
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100 | _delay_ms( LCD_SOFT_RESET_MS1 ); // 5 ms
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101 |
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102 | lcd_dip203g_out( LCD_SOFT_RESET,0 ); // 0x30
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103 |
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104 | _delay_ms( LCD_SOFT_RESET_MS2 ); // 1 ms
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105 |
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106 | lcd_dip203g_out( LCD_SOFT_RESET,0 ); // 0x30
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107 |
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108 | // * * *
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109 | }
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110 |
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111 | void lcd_dip203g_command(u8 data){
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112 | lcd_dip203g_out( data,0 );
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113 | lcd_dip203g_out( data<<4,0);
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114 | }
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115 |
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116 | void lcd_dip203g_data(u8 data){
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117 | lcd_dip203g_out( data,1);
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118 | lcd_dip203g_out( data<<4,1);
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119 | }
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