root / demos / hunter_prey / lib / src / libdragonfly / lcd.c @ 1828
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1 | 1828 | emullini | /**
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2 | * Copyright (c) 2007 Colony Project
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3 | *
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4 | * Permission is hereby granted, free of charge, to any person
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5 | * obtaining a copy of this software and associated documentation
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6 | * files (the "Software"), to deal in the Software without
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7 | * restriction, including without limitation the rights to use,
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8 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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9 | * copies of the Software, and to permit persons to whom the
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10 | * Software is furnished to do so, subject to the following
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11 | * conditions:
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12 | *
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13 | * The above copyright notice and this permission notice shall be
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14 | * included in all copies or substantial portions of the Software.
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15 | *
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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18 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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19 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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20 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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21 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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22 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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23 | * OTHER DEALINGS IN THE SOFTWARE.
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24 | **/
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25 | |||
26 | |||
27 | /**
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28 | * @file lcd.c
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29 | * @brief LCD
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30 | *
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31 | * Implementation of functions for using the LCD.
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32 | *
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33 | * @author Colony Project, CMU Robotics Club
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34 | **/
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35 | #include <avr/io.h> |
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36 | #include <avr/pgmspace.h> |
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37 | |||
38 | #include "lcd.h" |
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39 | #include "time.h" |
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40 | |||
41 | //LCD defines
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42 | #define RST _BV(4) // pd4 (GPIO) |
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43 | #define SCE _BV(0) // pb0 (~SS) |
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44 | #define D_C _BV(5) // pd5 (GPIO?) |
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45 | #define SDI _BV(2) // pb2 (MOSI) |
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46 | #define SCK _BV(1) // pb1 (SCK) |
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47 | |||
48 | #define LCDPORT PORTB
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49 | #define LCDDDR DDRB
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50 | |||
51 | #define LCDRESETPORT PORTD
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52 | #define LCDRESETDDR DDRD
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53 | |||
54 | void lcd_putbyte(unsigned char b); |
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55 | |||
56 | |||
57 | //**************************************Old shit below!*****************
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58 | /*
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59 | FontLookup - a lookup table for all characters
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60 | */
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61 | static const unsigned char FontLookup [][5] PROGMEM = |
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62 | { |
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63 | { 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp |
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64 | { 0x00, 0x00, 0x5f, 0x00, 0x00 }, // ! |
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65 | { 0x00, 0x07, 0x00, 0x07, 0x00 }, // " |
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66 | { 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # |
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67 | { 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ |
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68 | { 0x23, 0x13, 0x08, 0x64, 0x62 }, // % |
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69 | { 0x36, 0x49, 0x55, 0x22, 0x50 }, // & |
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70 | { 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' |
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71 | { 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( |
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72 | { 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) |
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73 | { 0x14, 0x08, 0x3E, 0x08, 0x14 }, // * |
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74 | { 0x08, 0x08, 0x3E, 0x08, 0x08 }, // + |
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75 | { 0x00, 0x00, 0x50, 0x30, 0x00 }, // , |
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76 | { 0x10, 0x10, 0x10, 0x10, 0x10 }, // - |
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77 | { 0x00, 0x60, 0x60, 0x00, 0x00 }, // . |
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78 | { 0x20, 0x10, 0x08, 0x04, 0x02 }, // / |
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79 | { 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0 |
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80 | { 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1 |
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81 | { 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 |
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82 | { 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3 |
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83 | { 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4 |
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84 | { 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 |
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85 | { 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6 |
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86 | { 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 |
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87 | { 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 |
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88 | { 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9 |
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89 | { 0x00, 0x36, 0x36, 0x00, 0x00 }, // : |
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90 | { 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; |
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91 | { 0x08, 0x14, 0x22, 0x41, 0x00 }, // < |
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92 | { 0x14, 0x14, 0x14, 0x14, 0x14 }, // = |
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93 | { 0x00, 0x41, 0x22, 0x14, 0x08 }, // > |
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94 | { 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? |
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95 | { 0x32, 0x49, 0x59, 0x51, 0x3E }, // @ |
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96 | { 0x7E, 0x11, 0x11, 0x11, 0x7E }, // A |
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97 | { 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B |
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98 | { 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C |
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99 | { 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D |
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100 | { 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E |
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101 | { 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F |
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102 | { 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G |
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103 | { 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H |
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104 | { 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I |
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105 | { 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J |
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106 | { 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K |
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107 | { 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L |
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108 | { 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M |
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109 | { 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N |
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110 | { 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O |
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111 | { 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P |
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112 | { 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q |
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113 | { 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R |
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114 | { 0x46, 0x49, 0x49, 0x49, 0x31 }, // S |
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115 | { 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T |
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116 | { 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U |
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117 | { 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V |
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118 | { 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W |
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119 | { 0x63, 0x14, 0x08, 0x14, 0x63 }, // X |
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120 | { 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y |
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121 | { 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z |
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122 | { 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [ |
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123 | { 0x02, 0x04, 0x08, 0x10, 0x20 }, // backslash |
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124 | { 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ] |
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125 | { 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ |
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126 | { 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ |
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127 | { 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' |
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128 | { 0x20, 0x54, 0x54, 0x54, 0x78 }, // a |
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129 | { 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b |
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130 | { 0x38, 0x44, 0x44, 0x44, 0x20 }, // c |
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131 | { 0x38, 0x44, 0x44, 0x48, 0x7F }, // d |
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132 | { 0x38, 0x54, 0x54, 0x54, 0x18 }, // e |
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133 | { 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f |
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134 | { 0x0C, 0x52, 0x52, 0x52, 0x3E }, // g |
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135 | { 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h |
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136 | { 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i |
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137 | { 0x20, 0x40, 0x44, 0x3D, 0x00 }, // j |
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138 | { 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k |
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139 | { 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l |
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140 | { 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m |
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141 | { 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n |
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142 | { 0x38, 0x44, 0x44, 0x44, 0x38 }, // o |
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143 | { 0x7C, 0x14, 0x14, 0x14, 0x08 }, // p |
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144 | { 0x08, 0x14, 0x14, 0x18, 0x7C }, // q |
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145 | { 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r |
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146 | { 0x48, 0x54, 0x54, 0x54, 0x20 }, // s |
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147 | { 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t |
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148 | { 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u |
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149 | { 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v |
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150 | { 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w |
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151 | { 0x44, 0x28, 0x10, 0x28, 0x44 }, // x |
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152 | { 0x0C, 0x50, 0x50, 0x50, 0x3C }, // y |
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153 | { 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z |
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154 | { 0x00, 0x08, 0x36, 0x41, 0x41 }, // { |
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155 | { 0x00, 0x00, 0x7F, 0x00, 0x00 }, // | |
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156 | { 0x41, 0x41, 0x36, 0x08, 0x00 }, // } |
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157 | { 0x02, 0x01, 0x01, 0x02, 0x01 }, // ~ |
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158 | { 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // del |
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159 | }; |
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160 | |||
161 | |||
162 | /**
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163 | * @defgroup lcd LCD
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164 | * @brief Functions for the LCD
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165 | * Functions for writing to the LCD.
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166 | * All functions may be found in lcd.h.
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167 | *
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168 | * @{
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169 | **/
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170 | |||
171 | /**
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172 | * Initializes the LCD. Must be called before any other
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173 | * LCD functions.
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174 | **/
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175 | void lcd_init(void) { |
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176 | LCDDDR |= (SCE | SDI | SCK); |
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177 | LCDRESETDDR |= (RST|D_C); |
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178 | |||
179 | LCDPORT &= ~( SCE | SDI | SCK); |
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180 | LCDRESETPORT &=~(D_C); |
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181 | |||
182 | SPCR |= 0x50;//0b01010000; // no SPI int, SPI en, Master, sample on rising edge, fosc/2 |
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183 | SPSR |= 0x01; // a continuation of the above |
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184 | |||
185 | LCDRESETPORT |= RST; |
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186 | delay_ms(10);
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187 | LCDRESETPORT &= (~RST); |
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188 | delay_ms(100);
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189 | LCDRESETPORT |= RST; |
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190 | |||
191 | lcd_putbyte( 0x21 ); // LCD Extended Commands. |
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192 | lcd_putbyte( 0xC8 ); // Set LCD Vop (Contrast). |
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193 | lcd_putbyte( 0x06 ); // Set Temp coefficent. |
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194 | lcd_putbyte( 0x13 ); // LCD bias mode 1:48. |
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195 | lcd_putbyte( 0x20 ); // LCD Standard Commands, Horizontal addressing mode. |
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196 | lcd_putbyte( 0x0C ); // LCD in normal mode. |
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197 | |||
198 | LCDRESETPORT |= D_C; //put it in init instead of main
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199 | |||
200 | lcd_clear_screen(); |
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201 | } |
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202 | |||
203 | /**
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204 | * Clears the LCD screen. lcd_init must be called first.
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205 | *
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206 | * @see lcd_init
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207 | **/
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208 | void lcd_clear_screen( void ) { |
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209 | int i;
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210 | for (i = 0; i < 504; i++) |
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211 | lcd_putbyte(0x0);
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212 | |||
213 | lcd_gotoxy(0,0); |
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214 | } |
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215 | |||
216 | /**
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217 | * Prints a character on the LCD screen. lcd_init
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218 | * must be called before this function may be used.
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219 | *
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220 | * Note: pgm_read_byte() is untested
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221 | *
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222 | * @param c the character to print
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223 | *
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224 | * @see lcd_init
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225 | **/
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226 | void lcd_putc(char c) { |
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227 | int i;
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228 | |||
229 | for (i = 0; i < 5; i++) |
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230 | lcd_putbyte(pgm_read_byte(&(FontLookup[c-32][i])));
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231 | lcd_putbyte(0);
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232 | } |
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233 | |||
234 | /*
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235 | print an entire string to the lcd
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236 | */
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237 | void lcd_puts(char *s) { |
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238 | char *t = s;
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239 | while (*t != 0) { |
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240 | lcd_putc(*t); |
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241 | t++; |
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242 | } |
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243 | } |
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244 | |||
245 | /*
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246 | go to coordinate x, y
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247 | y: vertically - 1 char
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248 | x: horizontally - 1 pixel
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249 | |||
250 | multiply x by 6 if want to move 1 entire character
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251 | |||
252 | origin (0,0) is at top left corner of lcd screen
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253 | */
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254 | |||
255 | /**
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256 | * Move the current cursor position to the one specified.
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257 | * lcd_init must be called before this function may be used.
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258 | *
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259 | * @param x The x coordinate of the new position
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260 | * @param y The y coordinate of the new position
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261 | *
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262 | * @see lcd_init
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263 | **/
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264 | void lcd_gotoxy(int x, int y) { |
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265 | LCDRESETPORT &= ~(D_C); |
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266 | lcd_putbyte(0x40 | (y & 0x07)); |
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267 | lcd_putbyte(0x80 | (x & 0x7f)); |
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268 | LCDRESETPORT |= D_C; |
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269 | } |
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270 | |||
271 | /*
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272 | prints an int to the lcd
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273 | |||
274 | code adapted from Chris Efstathiou's code (hendrix@otenet.gr)
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275 | */
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276 | |||
277 | /**
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278 | * Print an integer to the LCD screen.
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279 | * lcd_init must be called before this function may be used.
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280 | *
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281 | * @param value the integer to print
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282 | *
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283 | * @see lcd_init
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284 | **/
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285 | void lcd_puti(int value ) { |
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286 | unsigned char lcd_data[6]={'0','0','0','0','0','0' }, position=sizeof(lcd_data), radix=10; |
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287 | |||
288 | /* convert int to ascii */
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289 | if(value<0) { |
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290 | lcd_putc('-');
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291 | value=-value; |
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292 | } |
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293 | do {
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294 | position--; |
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295 | *(lcd_data+position)=(value%radix)+'0';
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296 | value/=radix; |
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297 | } while(value);
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298 | |||
299 | |||
300 | /* start displaying the number */
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301 | for(;position<=(sizeof(lcd_data)-1);position++) |
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302 | lcd_putc(lcd_data[position]); |
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303 | |||
304 | return;
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305 | } |
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306 | |||
307 | /** @} **/ //end defgroup |
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308 | |||
309 | void lcd_putbyte(unsigned char b) { |
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310 | SPDR = b; |
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311 | while (!(SPSR & 0x80)); /* Wait until SPI transaction is complete */ |
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312 | } |