Stepan Smejkal / UniGraphic

.

Protocols/PAR8.cpp@20:14daa48ffd4c, 2015-03-23 (annotated)

Committer:
Geremia
Date:
Mon Mar 23 14:08:04 2015 +0000
Revision:
20:14daa48ffd4c
Parent:
11:b842b8e332cb
Child:
25:daacdcf34e52
Add  ILI 9320/9325/9328 custom TFT932x class, parallel/spi 8/16bit, with orientation, scroll, pixelread, fastwindow.; Par8 and 16 tested, SPI not at all, needs checking if the CS toggle is necessary (see SPI8.cpp SPI16.cpp).

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 4:12ba0ecc2c1f 1 /* mbed UniGraphic library - PAR8 protocol class
Geremia 4:12ba0ecc2c1f 2 * Copyright (c) 2015 Giuliano Dianda
Geremia 4:12ba0ecc2c1f 3 * Released under the MIT License: http://mbed.org/license/mit
Geremia 4:12ba0ecc2c1f 4 *
Geremia 4:12ba0ecc2c1f 5 * Derived work of:
Geremia 4:12ba0ecc2c1f 6 *
Geremia 4:12ba0ecc2c1f 7 * mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
Geremia 4:12ba0ecc2c1f 8 * Copyright (c) 2013 Peter Drescher - DC2PD
Geremia 4:12ba0ecc2c1f 9 *
Geremia 4:12ba0ecc2c1f 10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Geremia 4:12ba0ecc2c1f 11 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Geremia 4:12ba0ecc2c1f 12 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Geremia 4:12ba0ecc2c1f 13 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Geremia 4:12ba0ecc2c1f 14 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Geremia 4:12ba0ecc2c1f 15 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Geremia 4:12ba0ecc2c1f 16 * THE SOFTWARE.
Geremia 4:12ba0ecc2c1f 17 */
Geremia 4:12ba0ecc2c1f 18
Geremia 0:75ec1b3cde17 19 #include "PAR8.h"
Geremia 0:75ec1b3cde17 20
Geremia 0:75ec1b3cde17 21 PAR8::PAR8(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD)
Geremia 0:75ec1b3cde17 22 : _port(port,0xFF), _CS(CS), _reset(reset), _DC(DC), _WR(WR), _RD(RD)
Geremia 0:75ec1b3cde17 23 {
Geremia 0:75ec1b3cde17 24 _reset = 1;
Geremia 0:75ec1b3cde17 25 _DC=1;
Geremia 0:75ec1b3cde17 26 _WR=1;
Geremia 0:75ec1b3cde17 27 _RD=1;
Geremia 0:75ec1b3cde17 28 _CS=1;
Geremia 0:75ec1b3cde17 29 _port.mode(PullNone);
Geremia 0:75ec1b3cde17 30 _port.output(); // will re-enable our GPIO port
Geremia 0:75ec1b3cde17 31 hw_reset();
Geremia 0:75ec1b3cde17 32 }
Geremia 0:75ec1b3cde17 33
Geremia 1:ff019d22b275 34 void PAR8::wr_cmd8(unsigned char cmd)
Geremia 20:14daa48ffd4c 35 {
Geremia 0:75ec1b3cde17 36 _DC = 0; // 0=cmd
Geremia 20:14daa48ffd4c 37 _port.write(cmd); // write 8bit
Geremia 0:75ec1b3cde17 38 _WR=0;
Geremia 0:75ec1b3cde17 39 _WR=1;
Geremia 20:14daa48ffd4c 40 _DC = 1; // 1=data next
Geremia 0:75ec1b3cde17 41 }
Geremia 1:ff019d22b275 42 void PAR8::wr_data8(unsigned char data)
Geremia 0:75ec1b3cde17 43 {
Geremia 20:14daa48ffd4c 44 _port.write(data); // write 8bit
Geremia 0:75ec1b3cde17 45 _WR=0;
Geremia 0:75ec1b3cde17 46 _WR=1;
Geremia 0:75ec1b3cde17 47 }
Geremia 1:ff019d22b275 48 void PAR8::wr_cmd16(unsigned short cmd)
Geremia 20:14daa48ffd4c 49 {
Geremia 1:ff019d22b275 50 _DC = 0; // 0=cmd
Geremia 1:ff019d22b275 51 _port.write(cmd>>8); // write 8bit
Geremia 1:ff019d22b275 52 _WR=0;
Geremia 1:ff019d22b275 53 _WR=1;
Geremia 20:14daa48ffd4c 54 _port.write(cmd&0xFF); // write 8bit
Geremia 20:14daa48ffd4c 55 _WR=0;
Geremia 20:14daa48ffd4c 56 _WR=1;
Geremia 20:14daa48ffd4c 57 _DC = 1; // 1=data next
Geremia 1:ff019d22b275 58 }
Geremia 1:ff019d22b275 59 void PAR8::wr_data16(unsigned short data)
Geremia 1:ff019d22b275 60 {
Geremia 20:14daa48ffd4c 61 _port.write(data>>8); // write 8bit
Geremia 1:ff019d22b275 62 _WR=0;
Geremia 1:ff019d22b275 63 _WR=1;
Geremia 20:14daa48ffd4c 64 _port.write(data&0xFF); // write 8bit
Geremia 1:ff019d22b275 65 _WR=0;
Geremia 1:ff019d22b275 66 _WR=1;
Geremia 1:ff019d22b275 67 }
Geremia 4:12ba0ecc2c1f 68 void PAR8::wr_gram(unsigned short data)
Geremia 4:12ba0ecc2c1f 69 {
Geremia 20:14daa48ffd4c 70 _port.write(data>>8); // write 8bit
Geremia 4:12ba0ecc2c1f 71 _WR=0;
Geremia 4:12ba0ecc2c1f 72 _WR=1;
Geremia 20:14daa48ffd4c 73 _port.write(data&0xFF); // write 8bit
Geremia 4:12ba0ecc2c1f 74 _WR=0;
Geremia 4:12ba0ecc2c1f 75 _WR=1;
Geremia 4:12ba0ecc2c1f 76 }
Geremia 4:12ba0ecc2c1f 77 void PAR8::wr_gram(unsigned short data, unsigned int count)
Geremia 1:ff019d22b275 78 {
Geremia 1:ff019d22b275 79 if((data>>8)==(data&0xFF))
Geremia 1:ff019d22b275 80 {
Geremia 1:ff019d22b275 81 count<<=1;
Geremia 20:14daa48ffd4c 82 // _port.write(data); // write 8bit
Geremia 1:ff019d22b275 83 while(count)
Geremia 1:ff019d22b275 84 {
Geremia 20:14daa48ffd4c 85 _port.write(data); // rewrite even if same data, otherwise too much fast
Geremia 1:ff019d22b275 86 _WR=0;
Geremia 1:ff019d22b275 87 _WR=1;
Geremia 1:ff019d22b275 88 count--;
Geremia 1:ff019d22b275 89 }
Geremia 1:ff019d22b275 90 }
Geremia 1:ff019d22b275 91 else
Geremia 1:ff019d22b275 92 {
Geremia 1:ff019d22b275 93 while(count)
Geremia 1:ff019d22b275 94 {
Geremia 20:14daa48ffd4c 95 _port.write(data>>8); // write 8bit
Geremia 1:ff019d22b275 96 _WR=0;
Geremia 1:ff019d22b275 97 _WR=1;
Geremia 20:14daa48ffd4c 98 _port.write(data&0xFF); // write 8bit
Geremia 1:ff019d22b275 99 _WR=0;
Geremia 1:ff019d22b275 100 _WR=1;
Geremia 1:ff019d22b275 101 count--;
Geremia 1:ff019d22b275 102 }
Geremia 1:ff019d22b275 103 }
Geremia 1:ff019d22b275 104 }
Geremia 4:12ba0ecc2c1f 105 void PAR8::wr_grambuf(unsigned short* data, unsigned int lenght)
Geremia 1:ff019d22b275 106 {
Geremia 1:ff019d22b275 107 while(lenght)
Geremia 1:ff019d22b275 108 {
Geremia 20:14daa48ffd4c 109 _port.write((*data)>>8); // write 8bit
Geremia 1:ff019d22b275 110 _WR=0;
Geremia 1:ff019d22b275 111 _WR=1;
Geremia 20:14daa48ffd4c 112 _port.write((*data)&0xFF); // write 8bit
Geremia 1:ff019d22b275 113 _WR=0;
Geremia 1:ff019d22b275 114 _WR=1;
Geremia 1:ff019d22b275 115 data++;
Geremia 1:ff019d22b275 116 lenght--;
Geremia 1:ff019d22b275 117 }
Geremia 1:ff019d22b275 118 }
Geremia 11:b842b8e332cb 119 unsigned short PAR8::rd_gram(bool convert)
Geremia 5:b222a9461d6b 120 {
Geremia 11:b842b8e332cb 121 unsigned int r=0;
Geremia 7:bb0383b91104 122 _port.input();
Geremia 7:bb0383b91104 123
Geremia 7:bb0383b91104 124 _RD = 0;
Geremia 20:14daa48ffd4c 125 _RD = 0; // add wait
Geremia 7:bb0383b91104 126 _port.read(); //dummy read
Geremia 7:bb0383b91104 127 _RD = 1;
Geremia 7:bb0383b91104 128
Geremia 7:bb0383b91104 129 _RD = 0;
Geremia 20:14daa48ffd4c 130 _RD = 0; // add wait
Geremia 20:14daa48ffd4c 131 r |= _port.read();
Geremia 20:14daa48ffd4c 132 _RD = 1;
Geremia 7:bb0383b91104 133 r <<= 8;
Geremia 7:bb0383b91104 134
Geremia 7:bb0383b91104 135 _RD = 0;
Geremia 20:14daa48ffd4c 136 _RD = 0; // add wait
Geremia 20:14daa48ffd4c 137 r |= _port.read();
Geremia 7:bb0383b91104 138 _RD = 1;
Geremia 11:b842b8e332cb 139 if(convert)
Geremia 11:b842b8e332cb 140 {
Geremia 11:b842b8e332cb 141 r <<= 8;
Geremia 11:b842b8e332cb 142 _RD = 0;
Geremia 11:b842b8e332cb 143 // _RD = 0; // add wait
Geremia 11:b842b8e332cb 144 r |= _port.read();
Geremia 11:b842b8e332cb 145 _RD = 1;
Geremia 11:b842b8e332cb 146 // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
Geremia 11:b842b8e332cb 147 // during reading, you read the raw 18bit gram
Geremia 11:b842b8e332cb 148 r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
Geremia 11:b842b8e332cb 149 }
Geremia 7:bb0383b91104 150 _port.output();
Geremia 11:b842b8e332cb 151 return (unsigned short)r;
Geremia 7:bb0383b91104 152 }
Geremia 7:bb0383b91104 153 unsigned int PAR8::rd_reg_data32(unsigned char reg)
Geremia 7:bb0383b91104 154 {
Geremia 7:bb0383b91104 155 wr_cmd8(reg);
Geremia 5:b222a9461d6b 156 unsigned int r=0;
Geremia 5:b222a9461d6b 157 _port.input();
Geremia 5:b222a9461d6b 158
Geremia 5:b222a9461d6b 159 _RD = 0;
Geremia 5:b222a9461d6b 160 _port.read(); //dummy read
Geremia 5:b222a9461d6b 161 _RD = 1;
Geremia 5:b222a9461d6b 162
Geremia 5:b222a9461d6b 163 _RD = 0;
Geremia 5:b222a9461d6b 164 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 165 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 166 r <<= 8;
Geremia 5:b222a9461d6b 167 _RD = 1;
Geremia 5:b222a9461d6b 168
Geremia 5:b222a9461d6b 169 _RD = 0;
Geremia 5:b222a9461d6b 170 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 171 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 172 r <<= 8;
Geremia 5:b222a9461d6b 173 _RD = 1;
Geremia 5:b222a9461d6b 174
Geremia 5:b222a9461d6b 175 _RD = 0;
Geremia 5:b222a9461d6b 176 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 177 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 178 r <<= 8;
Geremia 5:b222a9461d6b 179 _RD = 1;
Geremia 5:b222a9461d6b 180
Geremia 5:b222a9461d6b 181 _RD = 0;
Geremia 5:b222a9461d6b 182 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 183 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 184 _RD = 1;
Geremia 5:b222a9461d6b 185
Geremia 5:b222a9461d6b 186 _CS = 1; // force CS HIG to interupt the cmd in case was not supported
Geremia 5:b222a9461d6b 187 _CS = 0;
Geremia 5:b222a9461d6b 188 _port.output();
Geremia 5:b222a9461d6b 189 return r;
Geremia 5:b222a9461d6b 190 }
Geremia 7:bb0383b91104 191 // in Par mode EXTC regs (0xB0-0xFF) can be directly read
Geremia 7:bb0383b91104 192 unsigned int PAR8::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
Geremia 5:b222a9461d6b 193 {
Geremia 7:bb0383b91104 194 return rd_reg_data32(reg);
Geremia 5:b222a9461d6b 195 }
Geremia 20:14daa48ffd4c 196 // ILI932x specific
Geremia 20:14daa48ffd4c 197 void PAR8::dummyread()
Geremia 20:14daa48ffd4c 198 {
Geremia 20:14daa48ffd4c 199 _port.input();
Geremia 20:14daa48ffd4c 200 _RD=0;
Geremia 20:14daa48ffd4c 201 _RD=0; // add wait
Geremia 20:14daa48ffd4c 202 _port.read(); // dummy read
Geremia 20:14daa48ffd4c 203 _RD=1;
Geremia 20:14daa48ffd4c 204 // _port.output();
Geremia 20:14daa48ffd4c 205 }
Geremia 20:14daa48ffd4c 206 // ILI932x specific
Geremia 20:14daa48ffd4c 207 void PAR8::reg_select(unsigned char reg, bool forread)
Geremia 20:14daa48ffd4c 208 {
Geremia 20:14daa48ffd4c 209 _DC = 0;
Geremia 20:14daa48ffd4c 210 _port.write(0); // write MSB
Geremia 20:14daa48ffd4c 211 _WR=0;
Geremia 20:14daa48ffd4c 212 _WR=1;
Geremia 20:14daa48ffd4c 213 _port.write(reg); // write LSB
Geremia 20:14daa48ffd4c 214 _WR=0;
Geremia 20:14daa48ffd4c 215 _WR=1;
Geremia 20:14daa48ffd4c 216 _DC = 1; // 1=data next
Geremia 20:14daa48ffd4c 217 }
Geremia 20:14daa48ffd4c 218 // ILI932x specific
Geremia 20:14daa48ffd4c 219 void PAR8::reg_write(unsigned char reg, unsigned short data)
Geremia 20:14daa48ffd4c 220 {
Geremia 20:14daa48ffd4c 221 _DC = 0;
Geremia 20:14daa48ffd4c 222 _port.write(0); // write MSB
Geremia 20:14daa48ffd4c 223 _WR=0;
Geremia 20:14daa48ffd4c 224 _WR=1;
Geremia 20:14daa48ffd4c 225 _port.write(reg); // write MSB
Geremia 20:14daa48ffd4c 226 _WR=0;
Geremia 20:14daa48ffd4c 227 _WR=1;
Geremia 20:14daa48ffd4c 228 _DC = 1;
Geremia 20:14daa48ffd4c 229 _port.write(data>>8);
Geremia 20:14daa48ffd4c 230 _WR=0;
Geremia 20:14daa48ffd4c 231 _WR=1;
Geremia 20:14daa48ffd4c 232 _port.write(data&0xFF);
Geremia 20:14daa48ffd4c 233 _WR=0;
Geremia 20:14daa48ffd4c 234 _WR=1;
Geremia 20:14daa48ffd4c 235 }
Geremia 20:14daa48ffd4c 236 // ILI932x specific
Geremia 20:14daa48ffd4c 237 unsigned short PAR8::reg_read(unsigned char reg)
Geremia 20:14daa48ffd4c 238 {
Geremia 20:14daa48ffd4c 239 unsigned short r=0;
Geremia 20:14daa48ffd4c 240 _DC = 0;
Geremia 20:14daa48ffd4c 241 _port.write(0);
Geremia 20:14daa48ffd4c 242 _WR=0;
Geremia 20:14daa48ffd4c 243 _WR=1;
Geremia 20:14daa48ffd4c 244 _port.write(reg);
Geremia 20:14daa48ffd4c 245 _WR=0;
Geremia 20:14daa48ffd4c 246 _WR=1;
Geremia 20:14daa48ffd4c 247 _DC = 1;
Geremia 20:14daa48ffd4c 248 _port.input();
Geremia 20:14daa48ffd4c 249 _RD=0;
Geremia 20:14daa48ffd4c 250 r |= _port.read(); // read 8bit
Geremia 20:14daa48ffd4c 251 _RD=1;
Geremia 20:14daa48ffd4c 252 r <<= 8;
Geremia 20:14daa48ffd4c 253 _RD=0;
Geremia 20:14daa48ffd4c 254 r |= _port.read(); // read 8bit
Geremia 20:14daa48ffd4c 255 _RD=1;
Geremia 20:14daa48ffd4c 256 _port.output();
Geremia 20:14daa48ffd4c 257
Geremia 20:14daa48ffd4c 258 return r;
Geremia 20:14daa48ffd4c 259 }
Geremia 0:75ec1b3cde17 260 void PAR8::hw_reset()
Geremia 0:75ec1b3cde17 261 {
Geremia 0:75ec1b3cde17 262 wait_ms(15);
Geremia 0:75ec1b3cde17 263 _DC = 1;
Geremia 0:75ec1b3cde17 264 _CS = 1;
Geremia 0:75ec1b3cde17 265 _WR = 1;
Geremia 0:75ec1b3cde17 266 _RD = 1;
Geremia 0:75ec1b3cde17 267 _reset = 0; // display reset
Geremia 20:14daa48ffd4c 268 wait_ms(2);
Geremia 0:75ec1b3cde17 269 _reset = 1; // end reset
Geremia 20:14daa48ffd4c 270 wait_ms(100);
Geremia 0:75ec1b3cde17 271 }
Geremia 0:75ec1b3cde17 272 void PAR8::BusEnable(bool enable)
Geremia 0:75ec1b3cde17 273 {
Geremia 0:75ec1b3cde17 274 _CS = enable ? 0:1;
Geremia 0:75ec1b3cde17 275 }