Stepan Smejkal / UniGraphic

.

Protocols/PAR8.cpp@25:daacdcf34e52, 2015-10-18 (annotated)

Committer:
dreschpe
Date:
Sun Oct 18 13:53:20 2015 +0000
Revision:
25:daacdcf34e52
Parent:
20:14daa48ffd4c
Child:
27:acb2594b8aa4
Add check if platform supports par port mode

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 */
dreschpe 25:daacdcf34e52 18 #if DEVICE_PORTINOUT
Geremia 4:12ba0ecc2c1f 19
Geremia 0:75ec1b3cde17 20 #include "PAR8.h"
Geremia 0:75ec1b3cde17 21
Geremia 0:75ec1b3cde17 22 PAR8::PAR8(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD)
Geremia 0:75ec1b3cde17 23 : _port(port,0xFF), _CS(CS), _reset(reset), _DC(DC), _WR(WR), _RD(RD)
Geremia 0:75ec1b3cde17 24 {
Geremia 0:75ec1b3cde17 25 _reset = 1;
Geremia 0:75ec1b3cde17 26 _DC=1;
Geremia 0:75ec1b3cde17 27 _WR=1;
Geremia 0:75ec1b3cde17 28 _RD=1;
Geremia 0:75ec1b3cde17 29 _CS=1;
Geremia 0:75ec1b3cde17 30 _port.mode(PullNone);
Geremia 0:75ec1b3cde17 31 _port.output(); // will re-enable our GPIO port
Geremia 0:75ec1b3cde17 32 hw_reset();
Geremia 0:75ec1b3cde17 33 }
Geremia 0:75ec1b3cde17 34
Geremia 1:ff019d22b275 35 void PAR8::wr_cmd8(unsigned char cmd)
Geremia 20:14daa48ffd4c 36 {
Geremia 0:75ec1b3cde17 37 _DC = 0; // 0=cmd
Geremia 20:14daa48ffd4c 38 _port.write(cmd); // write 8bit
Geremia 0:75ec1b3cde17 39 _WR=0;
Geremia 0:75ec1b3cde17 40 _WR=1;
Geremia 20:14daa48ffd4c 41 _DC = 1; // 1=data next
Geremia 0:75ec1b3cde17 42 }
Geremia 1:ff019d22b275 43 void PAR8::wr_data8(unsigned char data)
Geremia 0:75ec1b3cde17 44 {
Geremia 20:14daa48ffd4c 45 _port.write(data); // write 8bit
Geremia 0:75ec1b3cde17 46 _WR=0;
Geremia 0:75ec1b3cde17 47 _WR=1;
Geremia 0:75ec1b3cde17 48 }
Geremia 1:ff019d22b275 49 void PAR8::wr_cmd16(unsigned short cmd)
Geremia 20:14daa48ffd4c 50 {
Geremia 1:ff019d22b275 51 _DC = 0; // 0=cmd
Geremia 1:ff019d22b275 52 _port.write(cmd>>8); // write 8bit
Geremia 1:ff019d22b275 53 _WR=0;
Geremia 1:ff019d22b275 54 _WR=1;
Geremia 20:14daa48ffd4c 55 _port.write(cmd&0xFF); // write 8bit
Geremia 20:14daa48ffd4c 56 _WR=0;
Geremia 20:14daa48ffd4c 57 _WR=1;
Geremia 20:14daa48ffd4c 58 _DC = 1; // 1=data next
Geremia 1:ff019d22b275 59 }
Geremia 1:ff019d22b275 60 void PAR8::wr_data16(unsigned short data)
Geremia 1:ff019d22b275 61 {
Geremia 20:14daa48ffd4c 62 _port.write(data>>8); // write 8bit
Geremia 1:ff019d22b275 63 _WR=0;
Geremia 1:ff019d22b275 64 _WR=1;
Geremia 20:14daa48ffd4c 65 _port.write(data&0xFF); // write 8bit
Geremia 1:ff019d22b275 66 _WR=0;
Geremia 1:ff019d22b275 67 _WR=1;
Geremia 1:ff019d22b275 68 }
Geremia 4:12ba0ecc2c1f 69 void PAR8::wr_gram(unsigned short data)
Geremia 4:12ba0ecc2c1f 70 {
Geremia 20:14daa48ffd4c 71 _port.write(data>>8); // write 8bit
Geremia 4:12ba0ecc2c1f 72 _WR=0;
Geremia 4:12ba0ecc2c1f 73 _WR=1;
Geremia 20:14daa48ffd4c 74 _port.write(data&0xFF); // write 8bit
Geremia 4:12ba0ecc2c1f 75 _WR=0;
Geremia 4:12ba0ecc2c1f 76 _WR=1;
Geremia 4:12ba0ecc2c1f 77 }
Geremia 4:12ba0ecc2c1f 78 void PAR8::wr_gram(unsigned short data, unsigned int count)
Geremia 1:ff019d22b275 79 {
Geremia 1:ff019d22b275 80 if((data>>8)==(data&0xFF))
Geremia 1:ff019d22b275 81 {
Geremia 1:ff019d22b275 82 count<<=1;
Geremia 20:14daa48ffd4c 83 // _port.write(data); // write 8bit
Geremia 1:ff019d22b275 84 while(count)
Geremia 1:ff019d22b275 85 {
Geremia 20:14daa48ffd4c 86 _port.write(data); // rewrite even if same data, otherwise too much fast
Geremia 1:ff019d22b275 87 _WR=0;
Geremia 1:ff019d22b275 88 _WR=1;
Geremia 1:ff019d22b275 89 count--;
Geremia 1:ff019d22b275 90 }
Geremia 1:ff019d22b275 91 }
Geremia 1:ff019d22b275 92 else
Geremia 1:ff019d22b275 93 {
Geremia 1:ff019d22b275 94 while(count)
Geremia 1:ff019d22b275 95 {
Geremia 20:14daa48ffd4c 96 _port.write(data>>8); // write 8bit
Geremia 1:ff019d22b275 97 _WR=0;
Geremia 1:ff019d22b275 98 _WR=1;
Geremia 20:14daa48ffd4c 99 _port.write(data&0xFF); // write 8bit
Geremia 1:ff019d22b275 100 _WR=0;
Geremia 1:ff019d22b275 101 _WR=1;
Geremia 1:ff019d22b275 102 count--;
Geremia 1:ff019d22b275 103 }
Geremia 1:ff019d22b275 104 }
Geremia 1:ff019d22b275 105 }
Geremia 4:12ba0ecc2c1f 106 void PAR8::wr_grambuf(unsigned short* data, unsigned int lenght)
Geremia 1:ff019d22b275 107 {
Geremia 1:ff019d22b275 108 while(lenght)
Geremia 1:ff019d22b275 109 {
Geremia 20:14daa48ffd4c 110 _port.write((*data)>>8); // write 8bit
Geremia 1:ff019d22b275 111 _WR=0;
Geremia 1:ff019d22b275 112 _WR=1;
Geremia 20:14daa48ffd4c 113 _port.write((*data)&0xFF); // write 8bit
Geremia 1:ff019d22b275 114 _WR=0;
Geremia 1:ff019d22b275 115 _WR=1;
Geremia 1:ff019d22b275 116 data++;
Geremia 1:ff019d22b275 117 lenght--;
Geremia 1:ff019d22b275 118 }
Geremia 1:ff019d22b275 119 }
Geremia 11:b842b8e332cb 120 unsigned short PAR8::rd_gram(bool convert)
Geremia 5:b222a9461d6b 121 {
Geremia 11:b842b8e332cb 122 unsigned int r=0;
Geremia 7:bb0383b91104 123 _port.input();
Geremia 7:bb0383b91104 124
Geremia 7:bb0383b91104 125 _RD = 0;
Geremia 20:14daa48ffd4c 126 _RD = 0; // add wait
Geremia 7:bb0383b91104 127 _port.read(); //dummy read
Geremia 7:bb0383b91104 128 _RD = 1;
Geremia 7:bb0383b91104 129
Geremia 7:bb0383b91104 130 _RD = 0;
Geremia 20:14daa48ffd4c 131 _RD = 0; // add wait
Geremia 20:14daa48ffd4c 132 r |= _port.read();
Geremia 20:14daa48ffd4c 133 _RD = 1;
Geremia 7:bb0383b91104 134 r <<= 8;
Geremia 7:bb0383b91104 135
Geremia 7:bb0383b91104 136 _RD = 0;
Geremia 20:14daa48ffd4c 137 _RD = 0; // add wait
Geremia 20:14daa48ffd4c 138 r |= _port.read();
Geremia 7:bb0383b91104 139 _RD = 1;
Geremia 11:b842b8e332cb 140 if(convert)
Geremia 11:b842b8e332cb 141 {
Geremia 11:b842b8e332cb 142 r <<= 8;
Geremia 11:b842b8e332cb 143 _RD = 0;
Geremia 11:b842b8e332cb 144 // _RD = 0; // add wait
Geremia 11:b842b8e332cb 145 r |= _port.read();
Geremia 11:b842b8e332cb 146 _RD = 1;
Geremia 11:b842b8e332cb 147 // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
Geremia 11:b842b8e332cb 148 // during reading, you read the raw 18bit gram
Geremia 11:b842b8e332cb 149 r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
Geremia 11:b842b8e332cb 150 }
Geremia 7:bb0383b91104 151 _port.output();
Geremia 11:b842b8e332cb 152 return (unsigned short)r;
Geremia 7:bb0383b91104 153 }
Geremia 7:bb0383b91104 154 unsigned int PAR8::rd_reg_data32(unsigned char reg)
Geremia 7:bb0383b91104 155 {
Geremia 7:bb0383b91104 156 wr_cmd8(reg);
Geremia 5:b222a9461d6b 157 unsigned int r=0;
Geremia 5:b222a9461d6b 158 _port.input();
Geremia 5:b222a9461d6b 159
Geremia 5:b222a9461d6b 160 _RD = 0;
Geremia 5:b222a9461d6b 161 _port.read(); //dummy read
Geremia 5:b222a9461d6b 162 _RD = 1;
Geremia 5:b222a9461d6b 163
Geremia 5:b222a9461d6b 164 _RD = 0;
Geremia 5:b222a9461d6b 165 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 166 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 167 r <<= 8;
Geremia 5:b222a9461d6b 168 _RD = 1;
Geremia 5:b222a9461d6b 169
Geremia 5:b222a9461d6b 170 _RD = 0;
Geremia 5:b222a9461d6b 171 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 172 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 173 r <<= 8;
Geremia 5:b222a9461d6b 174 _RD = 1;
Geremia 5:b222a9461d6b 175
Geremia 5:b222a9461d6b 176 _RD = 0;
Geremia 5:b222a9461d6b 177 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 178 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 179 r <<= 8;
Geremia 5:b222a9461d6b 180 _RD = 1;
Geremia 5:b222a9461d6b 181
Geremia 5:b222a9461d6b 182 _RD = 0;
Geremia 5:b222a9461d6b 183 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 184 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 185 _RD = 1;
Geremia 5:b222a9461d6b 186
Geremia 5:b222a9461d6b 187 _CS = 1; // force CS HIG to interupt the cmd in case was not supported
Geremia 5:b222a9461d6b 188 _CS = 0;
Geremia 5:b222a9461d6b 189 _port.output();
Geremia 5:b222a9461d6b 190 return r;
Geremia 5:b222a9461d6b 191 }
Geremia 7:bb0383b91104 192 // in Par mode EXTC regs (0xB0-0xFF) can be directly read
Geremia 7:bb0383b91104 193 unsigned int PAR8::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
Geremia 5:b222a9461d6b 194 {
Geremia 7:bb0383b91104 195 return rd_reg_data32(reg);
Geremia 5:b222a9461d6b 196 }
Geremia 20:14daa48ffd4c 197 // ILI932x specific
Geremia 20:14daa48ffd4c 198 void PAR8::dummyread()
Geremia 20:14daa48ffd4c 199 {
Geremia 20:14daa48ffd4c 200 _port.input();
Geremia 20:14daa48ffd4c 201 _RD=0;
Geremia 20:14daa48ffd4c 202 _RD=0; // add wait
Geremia 20:14daa48ffd4c 203 _port.read(); // dummy read
Geremia 20:14daa48ffd4c 204 _RD=1;
Geremia 20:14daa48ffd4c 205 // _port.output();
Geremia 20:14daa48ffd4c 206 }
Geremia 20:14daa48ffd4c 207 // ILI932x specific
Geremia 20:14daa48ffd4c 208 void PAR8::reg_select(unsigned char reg, bool forread)
Geremia 20:14daa48ffd4c 209 {
Geremia 20:14daa48ffd4c 210 _DC = 0;
Geremia 20:14daa48ffd4c 211 _port.write(0); // write MSB
Geremia 20:14daa48ffd4c 212 _WR=0;
Geremia 20:14daa48ffd4c 213 _WR=1;
Geremia 20:14daa48ffd4c 214 _port.write(reg); // write LSB
Geremia 20:14daa48ffd4c 215 _WR=0;
Geremia 20:14daa48ffd4c 216 _WR=1;
Geremia 20:14daa48ffd4c 217 _DC = 1; // 1=data next
Geremia 20:14daa48ffd4c 218 }
Geremia 20:14daa48ffd4c 219 // ILI932x specific
Geremia 20:14daa48ffd4c 220 void PAR8::reg_write(unsigned char reg, unsigned short data)
Geremia 20:14daa48ffd4c 221 {
Geremia 20:14daa48ffd4c 222 _DC = 0;
Geremia 20:14daa48ffd4c 223 _port.write(0); // write MSB
Geremia 20:14daa48ffd4c 224 _WR=0;
Geremia 20:14daa48ffd4c 225 _WR=1;
Geremia 20:14daa48ffd4c 226 _port.write(reg); // write MSB
Geremia 20:14daa48ffd4c 227 _WR=0;
Geremia 20:14daa48ffd4c 228 _WR=1;
Geremia 20:14daa48ffd4c 229 _DC = 1;
Geremia 20:14daa48ffd4c 230 _port.write(data>>8);
Geremia 20:14daa48ffd4c 231 _WR=0;
Geremia 20:14daa48ffd4c 232 _WR=1;
Geremia 20:14daa48ffd4c 233 _port.write(data&0xFF);
Geremia 20:14daa48ffd4c 234 _WR=0;
Geremia 20:14daa48ffd4c 235 _WR=1;
Geremia 20:14daa48ffd4c 236 }
Geremia 20:14daa48ffd4c 237 // ILI932x specific
Geremia 20:14daa48ffd4c 238 unsigned short PAR8::reg_read(unsigned char reg)
Geremia 20:14daa48ffd4c 239 {
Geremia 20:14daa48ffd4c 240 unsigned short r=0;
Geremia 20:14daa48ffd4c 241 _DC = 0;
Geremia 20:14daa48ffd4c 242 _port.write(0);
Geremia 20:14daa48ffd4c 243 _WR=0;
Geremia 20:14daa48ffd4c 244 _WR=1;
Geremia 20:14daa48ffd4c 245 _port.write(reg);
Geremia 20:14daa48ffd4c 246 _WR=0;
Geremia 20:14daa48ffd4c 247 _WR=1;
Geremia 20:14daa48ffd4c 248 _DC = 1;
Geremia 20:14daa48ffd4c 249 _port.input();
Geremia 20:14daa48ffd4c 250 _RD=0;
Geremia 20:14daa48ffd4c 251 r |= _port.read(); // read 8bit
Geremia 20:14daa48ffd4c 252 _RD=1;
Geremia 20:14daa48ffd4c 253 r <<= 8;
Geremia 20:14daa48ffd4c 254 _RD=0;
Geremia 20:14daa48ffd4c 255 r |= _port.read(); // read 8bit
Geremia 20:14daa48ffd4c 256 _RD=1;
Geremia 20:14daa48ffd4c 257 _port.output();
Geremia 20:14daa48ffd4c 258
Geremia 20:14daa48ffd4c 259 return r;
Geremia 20:14daa48ffd4c 260 }
Geremia 0:75ec1b3cde17 261 void PAR8::hw_reset()
Geremia 0:75ec1b3cde17 262 {
Geremia 0:75ec1b3cde17 263 wait_ms(15);
Geremia 0:75ec1b3cde17 264 _DC = 1;
Geremia 0:75ec1b3cde17 265 _CS = 1;
Geremia 0:75ec1b3cde17 266 _WR = 1;
Geremia 0:75ec1b3cde17 267 _RD = 1;
Geremia 0:75ec1b3cde17 268 _reset = 0; // display reset
Geremia 20:14daa48ffd4c 269 wait_ms(2);
Geremia 0:75ec1b3cde17 270 _reset = 1; // end reset
Geremia 20:14daa48ffd4c 271 wait_ms(100);
Geremia 0:75ec1b3cde17 272 }
Geremia 0:75ec1b3cde17 273 void PAR8::BusEnable(bool enable)
Geremia 0:75ec1b3cde17 274 {
Geremia 0:75ec1b3cde17 275 _CS = enable ? 0:1;
dreschpe 25:daacdcf34e52 276 }
dreschpe 25:daacdcf34e52 277
dreschpe 25:daacdcf34e52 278 #endif