Shinichiro Nakamura
SG12864A
Dependents: SG12864A_TestProgram
SG12864A.cpp@0:238f2d048222, 2010-07-19 (annotated)
- Committer:
- shintamainjp
- Date:
- Mon Jul 19 12:43:25 2010 +0000
- Revision:
- 0:238f2d048222
- Child:
- 1:aacd73a4e7ee
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| shintamainjp | 0:238f2d048222 | 1 | /** |
| shintamainjp | 0:238f2d048222 | 2 | * SG12864A Graphics LCD module driver class (Version 0.0.1) |
| shintamainjp | 0:238f2d048222 | 3 | * |
| shintamainjp | 0:238f2d048222 | 4 | * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems) |
| shintamainjp | 0:238f2d048222 | 5 | * http://shinta.main.jp/ |
| shintamainjp | 0:238f2d048222 | 6 | */ |
| shintamainjp | 0:238f2d048222 | 7 | |
| shintamainjp | 0:238f2d048222 | 8 | #include "SG12864A.h" |
| shintamainjp | 0:238f2d048222 | 9 | |
| shintamainjp | 0:238f2d048222 | 10 | SG12864A::SG12864A(PinName di, |
| shintamainjp | 0:238f2d048222 | 11 | PinName rw, |
| shintamainjp | 0:238f2d048222 | 12 | PinName en, |
| shintamainjp | 0:238f2d048222 | 13 | PinName db0, |
| shintamainjp | 0:238f2d048222 | 14 | PinName db1, |
| shintamainjp | 0:238f2d048222 | 15 | PinName db2, |
| shintamainjp | 0:238f2d048222 | 16 | PinName db3, |
| shintamainjp | 0:238f2d048222 | 17 | PinName db4, |
| shintamainjp | 0:238f2d048222 | 18 | PinName db5, |
| shintamainjp | 0:238f2d048222 | 19 | PinName db6, |
| shintamainjp | 0:238f2d048222 | 20 | PinName db7, |
| shintamainjp | 0:238f2d048222 | 21 | PinName cs1, |
| shintamainjp | 0:238f2d048222 | 22 | PinName cs2, |
| shintamainjp | 0:238f2d048222 | 23 | PinName res) |
| shintamainjp | 0:238f2d048222 | 24 | : |
| shintamainjp | 0:238f2d048222 | 25 | ioDI(di), |
| shintamainjp | 0:238f2d048222 | 26 | ioRW(rw), |
| shintamainjp | 0:238f2d048222 | 27 | ioEN(en), |
| shintamainjp | 0:238f2d048222 | 28 | ioDB(db0, db1, db2, db3, db4, db5, db6, db7), |
| shintamainjp | 0:238f2d048222 | 29 | ioCS1(cs1), |
| shintamainjp | 0:238f2d048222 | 30 | ioCS2(cs2), |
| shintamainjp | 0:238f2d048222 | 31 | ioRES(res) { |
| shintamainjp | 0:238f2d048222 | 32 | setDirectionToWrite(); |
| shintamainjp | 0:238f2d048222 | 33 | } |
| shintamainjp | 0:238f2d048222 | 34 | |
| shintamainjp | 0:238f2d048222 | 35 | SG12864A::~SG12864A() { |
| shintamainjp | 0:238f2d048222 | 36 | } |
| shintamainjp | 0:238f2d048222 | 37 | |
| shintamainjp | 0:238f2d048222 | 38 | /** |
| shintamainjp | 0:238f2d048222 | 39 | * High Level Interface. |
| shintamainjp | 0:238f2d048222 | 40 | * |
| shintamainjp | 0:238f2d048222 | 41 | * Reset display module. |
| shintamainjp | 0:238f2d048222 | 42 | */ |
| shintamainjp | 0:238f2d048222 | 43 | void SG12864A::reset(void) { |
| shintamainjp | 0:238f2d048222 | 44 | setDisplayOnOff(SG12864A::CS1, false); |
| shintamainjp | 0:238f2d048222 | 45 | setDisplayOnOff(SG12864A::CS2, false); |
| shintamainjp | 0:238f2d048222 | 46 | clear(); |
| shintamainjp | 0:238f2d048222 | 47 | |
| shintamainjp | 0:238f2d048222 | 48 | reset(true); |
| shintamainjp | 0:238f2d048222 | 49 | wait_ms(200); |
| shintamainjp | 0:238f2d048222 | 50 | reset(false); |
| shintamainjp | 0:238f2d048222 | 51 | wait_ms(200); |
| shintamainjp | 0:238f2d048222 | 52 | |
| shintamainjp | 0:238f2d048222 | 53 | setDisplayOnOff(SG12864A::CS1, true); |
| shintamainjp | 0:238f2d048222 | 54 | setDisplayOnOff(SG12864A::CS2, true); |
| shintamainjp | 0:238f2d048222 | 55 | setDisplayStartLine(SG12864A::CS1, 0); |
| shintamainjp | 0:238f2d048222 | 56 | setDisplayStartLine(SG12864A::CS2, 0); |
| shintamainjp | 0:238f2d048222 | 57 | setPageAddress(SG12864A::CS1, 0); |
| shintamainjp | 0:238f2d048222 | 58 | setPageAddress(SG12864A::CS2, 0); |
| shintamainjp | 0:238f2d048222 | 59 | setColumnAddress(SG12864A::CS1, 0); |
| shintamainjp | 0:238f2d048222 | 60 | setColumnAddress(SG12864A::CS2, 0); |
| shintamainjp | 0:238f2d048222 | 61 | } |
| shintamainjp | 0:238f2d048222 | 62 | |
| shintamainjp | 0:238f2d048222 | 63 | /** |
| shintamainjp | 0:238f2d048222 | 64 | * High Level Interface. |
| shintamainjp | 0:238f2d048222 | 65 | * |
| shintamainjp | 0:238f2d048222 | 66 | * Clear display module. |
| shintamainjp | 0:238f2d048222 | 67 | */ |
| shintamainjp | 0:238f2d048222 | 68 | void SG12864A::clear(void) { |
| shintamainjp | 0:238f2d048222 | 69 | for (uint8_t page = 0; page < PAGES; page++) { |
| shintamainjp | 0:238f2d048222 | 70 | for (uint8_t column = 0; column < COLUMNS; column++) { |
| shintamainjp | 0:238f2d048222 | 71 | // CS1 |
| shintamainjp | 0:238f2d048222 | 72 | setPageAddress(SG12864A::CS1, page); |
| shintamainjp | 0:238f2d048222 | 73 | setColumnAddress(SG12864A::CS1, column); |
| shintamainjp | 0:238f2d048222 | 74 | writeData(CS1, 0x00); |
| shintamainjp | 0:238f2d048222 | 75 | // CS2 |
| shintamainjp | 0:238f2d048222 | 76 | setPageAddress(SG12864A::CS2, page); |
| shintamainjp | 0:238f2d048222 | 77 | setColumnAddress(SG12864A::CS2, column); |
| shintamainjp | 0:238f2d048222 | 78 | writeData(CS2, 0x00); |
| shintamainjp | 0:238f2d048222 | 79 | } |
| shintamainjp | 0:238f2d048222 | 80 | } |
| shintamainjp | 0:238f2d048222 | 81 | // CS1 |
| shintamainjp | 0:238f2d048222 | 82 | setPageAddress(SG12864A::CS1, 0); |
| shintamainjp | 0:238f2d048222 | 83 | setColumnAddress(SG12864A::CS1, 0); |
| shintamainjp | 0:238f2d048222 | 84 | writeData(CS1, 0x00); |
| shintamainjp | 0:238f2d048222 | 85 | // CS2 |
| shintamainjp | 0:238f2d048222 | 86 | setPageAddress(SG12864A::CS2, 0); |
| shintamainjp | 0:238f2d048222 | 87 | setColumnAddress(SG12864A::CS2, 0); |
| shintamainjp | 0:238f2d048222 | 88 | writeData(CS2, 0x00); |
| shintamainjp | 0:238f2d048222 | 89 | } |
| shintamainjp | 0:238f2d048222 | 90 | |
| shintamainjp | 0:238f2d048222 | 91 | /** |
| shintamainjp | 0:238f2d048222 | 92 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 93 | * |
| shintamainjp | 0:238f2d048222 | 94 | * Set display on/off. |
| shintamainjp | 0:238f2d048222 | 95 | * |
| shintamainjp | 0:238f2d048222 | 96 | * @param t Target (CS1, CS2). |
| shintamainjp | 0:238f2d048222 | 97 | * @param on ON/OFF (true, false). |
| shintamainjp | 0:238f2d048222 | 98 | */ |
| shintamainjp | 0:238f2d048222 | 99 | void SG12864A::setDisplayOnOff(Target t, bool on) { |
| shintamainjp | 0:238f2d048222 | 100 | setDirectionToWrite(); |
| shintamainjp | 0:238f2d048222 | 101 | uint8_t c = 0x3e | (on ? 0x01 : 0x00); |
| shintamainjp | 0:238f2d048222 | 102 | write(t, SG12864A::Instruction, c); |
| shintamainjp | 0:238f2d048222 | 103 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 104 | } |
| shintamainjp | 0:238f2d048222 | 105 | |
| shintamainjp | 0:238f2d048222 | 106 | /** |
| shintamainjp | 0:238f2d048222 | 107 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 108 | * |
| shintamainjp | 0:238f2d048222 | 109 | * Set display start line. |
| shintamainjp | 0:238f2d048222 | 110 | * |
| shintamainjp | 0:238f2d048222 | 111 | * @param t Target (CS1, CS2). |
| shintamainjp | 0:238f2d048222 | 112 | * @param addr Display start line (0-63). |
| shintamainjp | 0:238f2d048222 | 113 | */ |
| shintamainjp | 0:238f2d048222 | 114 | void SG12864A::setDisplayStartLine(Target t, uint8_t addr) { |
| shintamainjp | 0:238f2d048222 | 115 | setDirectionToWrite(); |
| shintamainjp | 0:238f2d048222 | 116 | uint8_t c = 0xc0 | (addr & 0x3f); |
| shintamainjp | 0:238f2d048222 | 117 | write(t, SG12864A::Instruction, c); |
| shintamainjp | 0:238f2d048222 | 118 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 119 | } |
| shintamainjp | 0:238f2d048222 | 120 | |
| shintamainjp | 0:238f2d048222 | 121 | /** |
| shintamainjp | 0:238f2d048222 | 122 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 123 | * |
| shintamainjp | 0:238f2d048222 | 124 | * Set page address. |
| shintamainjp | 0:238f2d048222 | 125 | * |
| shintamainjp | 0:238f2d048222 | 126 | * @param t Target (CS1, CS2). |
| shintamainjp | 0:238f2d048222 | 127 | * @param addr Page address(0-7). |
| shintamainjp | 0:238f2d048222 | 128 | */ |
| shintamainjp | 0:238f2d048222 | 129 | void SG12864A::setPageAddress(Target t, uint8_t addr) { |
| shintamainjp | 0:238f2d048222 | 130 | setDirectionToWrite(); |
| shintamainjp | 0:238f2d048222 | 131 | uint8_t c = 0xb8 | (addr & 0x07); |
| shintamainjp | 0:238f2d048222 | 132 | write(t, SG12864A::Instruction, c); |
| shintamainjp | 0:238f2d048222 | 133 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 134 | } |
| shintamainjp | 0:238f2d048222 | 135 | |
| shintamainjp | 0:238f2d048222 | 136 | /** |
| shintamainjp | 0:238f2d048222 | 137 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 138 | * |
| shintamainjp | 0:238f2d048222 | 139 | * Set column address. |
| shintamainjp | 0:238f2d048222 | 140 | * |
| shintamainjp | 0:238f2d048222 | 141 | * @param t Target. (CS1, CS2) |
| shintamainjp | 0:238f2d048222 | 142 | * @param addr Column address (0-63). |
| shintamainjp | 0:238f2d048222 | 143 | */ |
| shintamainjp | 0:238f2d048222 | 144 | void SG12864A::setColumnAddress(Target t, uint8_t addr) { |
| shintamainjp | 0:238f2d048222 | 145 | setDirectionToWrite(); |
| shintamainjp | 0:238f2d048222 | 146 | uint8_t c = 0x40 | (addr & 0x3f); |
| shintamainjp | 0:238f2d048222 | 147 | write(t, SG12864A::Instruction, c); |
| shintamainjp | 0:238f2d048222 | 148 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 149 | } |
| shintamainjp | 0:238f2d048222 | 150 | |
| shintamainjp | 0:238f2d048222 | 151 | /** |
| shintamainjp | 0:238f2d048222 | 152 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 153 | */ |
| shintamainjp | 0:238f2d048222 | 154 | void SG12864A::readStatus(Target t, uint8_t *c) { |
| shintamainjp | 0:238f2d048222 | 155 | setDirectionToRead(); |
| shintamainjp | 0:238f2d048222 | 156 | read(t, SG12864A::Instruction, c); |
| shintamainjp | 0:238f2d048222 | 157 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 158 | } |
| shintamainjp | 0:238f2d048222 | 159 | |
| shintamainjp | 0:238f2d048222 | 160 | /** |
| shintamainjp | 0:238f2d048222 | 161 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 162 | */ |
| shintamainjp | 0:238f2d048222 | 163 | void SG12864A::writeData(Target t, uint8_t c) { |
| shintamainjp | 0:238f2d048222 | 164 | setDirectionToWrite(); |
| shintamainjp | 0:238f2d048222 | 165 | write(t, SG12864A::Data, c); |
| shintamainjp | 0:238f2d048222 | 166 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 167 | } |
| shintamainjp | 0:238f2d048222 | 168 | |
| shintamainjp | 0:238f2d048222 | 169 | /** |
| shintamainjp | 0:238f2d048222 | 170 | * Middle Level Interface. |
| shintamainjp | 0:238f2d048222 | 171 | */ |
| shintamainjp | 0:238f2d048222 | 172 | void SG12864A::readData(Target t, uint8_t *c) { |
| shintamainjp | 0:238f2d048222 | 173 | setDirectionToRead(); |
| shintamainjp | 0:238f2d048222 | 174 | read(t, SG12864A::Data, c); |
| shintamainjp | 0:238f2d048222 | 175 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 176 | } |
| shintamainjp | 0:238f2d048222 | 177 | |
| shintamainjp | 0:238f2d048222 | 178 | /** |
| shintamainjp | 0:238f2d048222 | 179 | * Low Level Interface. |
| shintamainjp | 0:238f2d048222 | 180 | */ |
| shintamainjp | 0:238f2d048222 | 181 | void SG12864A::setDirectionToRead() { |
| shintamainjp | 0:238f2d048222 | 182 | ioDB.input(); |
| shintamainjp | 0:238f2d048222 | 183 | ioRW = 1; |
| shintamainjp | 0:238f2d048222 | 184 | } |
| shintamainjp | 0:238f2d048222 | 185 | |
| shintamainjp | 0:238f2d048222 | 186 | /** |
| shintamainjp | 0:238f2d048222 | 187 | * Low Level Interface. |
| shintamainjp | 0:238f2d048222 | 188 | */ |
| shintamainjp | 0:238f2d048222 | 189 | void SG12864A::setDirectionToWrite() { |
| shintamainjp | 0:238f2d048222 | 190 | ioDB.output(); |
| shintamainjp | 0:238f2d048222 | 191 | ioRW = 0; |
| shintamainjp | 0:238f2d048222 | 192 | } |
| shintamainjp | 0:238f2d048222 | 193 | |
| shintamainjp | 0:238f2d048222 | 194 | /** |
| shintamainjp | 0:238f2d048222 | 195 | * Low Level Interface. |
| shintamainjp | 0:238f2d048222 | 196 | */ |
| shintamainjp | 0:238f2d048222 | 197 | void SG12864A::write(Target t, Mode m, uint8_t c) { |
| shintamainjp | 0:238f2d048222 | 198 | switch (t) { |
| shintamainjp | 0:238f2d048222 | 199 | case CS1: |
| shintamainjp | 0:238f2d048222 | 200 | ioCS1 = 1; |
| shintamainjp | 0:238f2d048222 | 201 | ioCS2 = 0; |
| shintamainjp | 0:238f2d048222 | 202 | break; |
| shintamainjp | 0:238f2d048222 | 203 | case CS2: |
| shintamainjp | 0:238f2d048222 | 204 | ioCS1 = 0; |
| shintamainjp | 0:238f2d048222 | 205 | ioCS2 = 1; |
| shintamainjp | 0:238f2d048222 | 206 | break; |
| shintamainjp | 0:238f2d048222 | 207 | } |
| shintamainjp | 0:238f2d048222 | 208 | switch (m) { |
| shintamainjp | 0:238f2d048222 | 209 | case Data: |
| shintamainjp | 0:238f2d048222 | 210 | ioDI = 1; |
| shintamainjp | 0:238f2d048222 | 211 | break; |
| shintamainjp | 0:238f2d048222 | 212 | case Instruction: |
| shintamainjp | 0:238f2d048222 | 213 | ioDI = 0; |
| shintamainjp | 0:238f2d048222 | 214 | break; |
| shintamainjp | 0:238f2d048222 | 215 | } |
| shintamainjp | 0:238f2d048222 | 216 | ioDB = c; |
| shintamainjp | 0:238f2d048222 | 217 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 218 | ioEN = 1; |
| shintamainjp | 0:238f2d048222 | 219 | wait_us(1); |
| shintamainjp | 0:238f2d048222 | 220 | ioEN = 0; |
| shintamainjp | 0:238f2d048222 | 221 | wait_us(5); |
| shintamainjp | 0:238f2d048222 | 222 | } |
| shintamainjp | 0:238f2d048222 | 223 | |
| shintamainjp | 0:238f2d048222 | 224 | /** |
| shintamainjp | 0:238f2d048222 | 225 | * Low Level Interface. |
| shintamainjp | 0:238f2d048222 | 226 | */ |
| shintamainjp | 0:238f2d048222 | 227 | void SG12864A::read(Target t, Mode m, uint8_t *c) { |
| shintamainjp | 0:238f2d048222 | 228 | // TODO |
| shintamainjp | 0:238f2d048222 | 229 | } |
| shintamainjp | 0:238f2d048222 | 230 | |
| shintamainjp | 0:238f2d048222 | 231 | /** |
| shintamainjp | 0:238f2d048222 | 232 | * Low Level Interface. |
| shintamainjp | 0:238f2d048222 | 233 | */ |
| shintamainjp | 0:238f2d048222 | 234 | void SG12864A::reset(bool b) { |
| shintamainjp | 0:238f2d048222 | 235 | if (b) { |
| shintamainjp | 0:238f2d048222 | 236 | ioRES = 0; |
| shintamainjp | 0:238f2d048222 | 237 | } else { |
| shintamainjp | 0:238f2d048222 | 238 | ioRES = 1; |
| shintamainjp | 0:238f2d048222 | 239 | } |
| shintamainjp | 0:238f2d048222 | 240 | } |