Stepan Smejkal / UniGraphic

.

Protocols/PAR16.cpp@11:b842b8e332cb, 2015-02-20 (annotated)

Committer:
Geremia
Date:
Fri Feb 20 21:32:25 2015 +0000
Revision:
11:b842b8e332cb
Parent:
7:bb0383b91104
Child:
20:14daa48ffd4c
added auto_gram_read_format() to TFt inits. Even if write is set to 16bit RGB color, for some controllers the read cmd outputs 18bit BGR. Now that function will autodetect and set internal flags accordingly, so pixelread() is always correct.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 4:12ba0ecc2c1f 1 /* mbed UniGraphic library - PAR16 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 #include "PAR16.h"
Geremia 4:12ba0ecc2c1f 19
Geremia 4:12ba0ecc2c1f 20 PAR16::PAR16(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD)
Geremia 4:12ba0ecc2c1f 21 : _port(port,0xFFFF), _CS(CS), _reset(reset), _DC(DC), _WR(WR), _RD(RD)
Geremia 4:12ba0ecc2c1f 22 {
Geremia 4:12ba0ecc2c1f 23 _reset = 1;
Geremia 4:12ba0ecc2c1f 24 _DC=1;
Geremia 4:12ba0ecc2c1f 25 _WR=1;
Geremia 4:12ba0ecc2c1f 26 _RD=1;
Geremia 4:12ba0ecc2c1f 27 _CS=1;
Geremia 4:12ba0ecc2c1f 28 #ifdef STMPORTDEBUG
Geremia 4:12ba0ecc2c1f 29 findport(port); //on return, GPIO get disabled
Geremia 4:12ba0ecc2c1f 30 #endif
Geremia 4:12ba0ecc2c1f 31 _port.mode(PullNone);
Geremia 4:12ba0ecc2c1f 32 _port.output(); // will re-enable our GPIO port
Geremia 4:12ba0ecc2c1f 33 hw_reset();
Geremia 4:12ba0ecc2c1f 34 }
Geremia 4:12ba0ecc2c1f 35
Geremia 4:12ba0ecc2c1f 36 #ifdef STMPORTDEBUG
Geremia 4:12ba0ecc2c1f 37 // create a port obj with STM HAL drivers, just to collect memorymapped regs
Geremia 4:12ba0ecc2c1f 38 void PAR16::findport(PortName port)
Geremia 4:12ba0ecc2c1f 39 {
Geremia 4:12ba0ecc2c1f 40 port_t tempport;
Geremia 4:12ba0ecc2c1f 41 port_init(&tempport, port, 0xFF, PIN_INPUT);
Geremia 4:12ba0ecc2c1f 42 outreg = tempport.reg_out;
Geremia 4:12ba0ecc2c1f 43 inreg = tempport.reg_in;
Geremia 4:12ba0ecc2c1f 44 // debug("out 0x%.8X in 0x%.8X\r\n", outreg, inreg);
Geremia 4:12ba0ecc2c1f 45 }
Geremia 4:12ba0ecc2c1f 46 #endif
Geremia 4:12ba0ecc2c1f 47 void PAR16::wr_cmd8(unsigned char cmd)
Geremia 4:12ba0ecc2c1f 48 {
Geremia 4:12ba0ecc2c1f 49 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 50 _CS = 0;
Geremia 4:12ba0ecc2c1f 51 #endif
Geremia 4:12ba0ecc2c1f 52 _DC = 0; // 0=cmd
Geremia 4:12ba0ecc2c1f 53 _port.write(cmd); // write 8bit
Geremia 4:12ba0ecc2c1f 54 _WR=0;
Geremia 4:12ba0ecc2c1f 55 _WR=1;
Geremia 4:12ba0ecc2c1f 56 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 57 _CS = 1;
Geremia 4:12ba0ecc2c1f 58 #endif
Geremia 4:12ba0ecc2c1f 59 }
Geremia 4:12ba0ecc2c1f 60 void PAR16::wr_data8(unsigned char data)
Geremia 4:12ba0ecc2c1f 61 {
Geremia 4:12ba0ecc2c1f 62 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 63 _CS = 0;
Geremia 4:12ba0ecc2c1f 64 #endif
Geremia 4:12ba0ecc2c1f 65 _DC = 1; // 1=data
Geremia 4:12ba0ecc2c1f 66 _port.write(data); // write 8bit
Geremia 4:12ba0ecc2c1f 67 _WR=0;
Geremia 4:12ba0ecc2c1f 68 _WR=1;
Geremia 4:12ba0ecc2c1f 69 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 70 _CS = 1;
Geremia 4:12ba0ecc2c1f 71 #endif
Geremia 4:12ba0ecc2c1f 72 }
Geremia 4:12ba0ecc2c1f 73 void PAR16::wr_cmd16(unsigned short cmd)
Geremia 4:12ba0ecc2c1f 74 {
Geremia 4:12ba0ecc2c1f 75 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 76 _CS = 0;
Geremia 4:12ba0ecc2c1f 77 #endif
Geremia 4:12ba0ecc2c1f 78 _DC = 0; // 0=cmd
Geremia 4:12ba0ecc2c1f 79 _port.write(cmd>>8); // write 8bit
Geremia 4:12ba0ecc2c1f 80 _WR=0;
Geremia 4:12ba0ecc2c1f 81 _WR=1;
Geremia 4:12ba0ecc2c1f 82 _port.write(cmd&0xFF); // write 8bit
Geremia 4:12ba0ecc2c1f 83 _WR=0;
Geremia 4:12ba0ecc2c1f 84 _WR=1;
Geremia 4:12ba0ecc2c1f 85 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 86 _CS = 1;
Geremia 4:12ba0ecc2c1f 87 #endif
Geremia 4:12ba0ecc2c1f 88 }
Geremia 4:12ba0ecc2c1f 89 void PAR16::wr_data16(unsigned short data)
Geremia 4:12ba0ecc2c1f 90 {
Geremia 4:12ba0ecc2c1f 91 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 92 _CS = 0;
Geremia 4:12ba0ecc2c1f 93 #endif
Geremia 4:12ba0ecc2c1f 94 _DC = 1; // 1=data
Geremia 4:12ba0ecc2c1f 95 _port.write(data>>8); // write 8bit
Geremia 4:12ba0ecc2c1f 96 _WR=0;
Geremia 4:12ba0ecc2c1f 97 _WR=1;
Geremia 4:12ba0ecc2c1f 98 _port.write(data&0xFF); // write 8bit
Geremia 4:12ba0ecc2c1f 99 _WR=0;
Geremia 4:12ba0ecc2c1f 100 _WR=1;
Geremia 4:12ba0ecc2c1f 101 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 102 _CS = 1;
Geremia 4:12ba0ecc2c1f 103 #endif
Geremia 4:12ba0ecc2c1f 104 }
Geremia 4:12ba0ecc2c1f 105 void PAR16::wr_gram(unsigned short data)
Geremia 4:12ba0ecc2c1f 106 {
Geremia 4:12ba0ecc2c1f 107 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 108 _CS = 0;
Geremia 4:12ba0ecc2c1f 109 #endif
Geremia 4:12ba0ecc2c1f 110 _DC = 1; // 1=data
Geremia 4:12ba0ecc2c1f 111 _port.write(data); // write 16bit
Geremia 4:12ba0ecc2c1f 112 _WR=0;
Geremia 4:12ba0ecc2c1f 113 _WR=1;
Geremia 4:12ba0ecc2c1f 114 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 115 _CS = 1;
Geremia 4:12ba0ecc2c1f 116 #endif
Geremia 4:12ba0ecc2c1f 117 }
Geremia 4:12ba0ecc2c1f 118 void PAR16::wr_gram(unsigned short data, unsigned int count)
Geremia 4:12ba0ecc2c1f 119 {
Geremia 4:12ba0ecc2c1f 120 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 121 _CS = 0;
Geremia 4:12ba0ecc2c1f 122 #endif
Geremia 4:12ba0ecc2c1f 123 _DC = 1; // 1=data
Geremia 4:12ba0ecc2c1f 124 while(count)
Geremia 4:12ba0ecc2c1f 125 {
Geremia 4:12ba0ecc2c1f 126 _port.write(data); // write 16bit
Geremia 4:12ba0ecc2c1f 127 _WR=0;
Geremia 4:12ba0ecc2c1f 128 _WR=1;
Geremia 4:12ba0ecc2c1f 129 count--;
Geremia 4:12ba0ecc2c1f 130 }
Geremia 4:12ba0ecc2c1f 131 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 132 _CS = 1;
Geremia 4:12ba0ecc2c1f 133 #endif
Geremia 4:12ba0ecc2c1f 134 }
Geremia 4:12ba0ecc2c1f 135 void PAR16::wr_grambuf(unsigned short* data, unsigned int lenght)
Geremia 4:12ba0ecc2c1f 136 {
Geremia 4:12ba0ecc2c1f 137 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 138 _CS = 0;
Geremia 4:12ba0ecc2c1f 139 #endif
Geremia 4:12ba0ecc2c1f 140 _DC = 1; // 1=data
Geremia 4:12ba0ecc2c1f 141 while(lenght)
Geremia 4:12ba0ecc2c1f 142 {
Geremia 4:12ba0ecc2c1f 143 _port.write(*data); // write 16bit
Geremia 4:12ba0ecc2c1f 144 _WR=0;
Geremia 4:12ba0ecc2c1f 145 _WR=1;
Geremia 4:12ba0ecc2c1f 146 data++;
Geremia 4:12ba0ecc2c1f 147 lenght--;
Geremia 4:12ba0ecc2c1f 148 }
Geremia 4:12ba0ecc2c1f 149 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 150 _CS = 1;
Geremia 4:12ba0ecc2c1f 151 #endif
Geremia 4:12ba0ecc2c1f 152 }
Geremia 11:b842b8e332cb 153 unsigned short PAR16::rd_gram(bool convert)
Geremia 5:b222a9461d6b 154 {
Geremia 5:b222a9461d6b 155 #ifdef USE_CS
Geremia 5:b222a9461d6b 156 _CS = 0;
Geremia 5:b222a9461d6b 157 #endif
Geremia 11:b842b8e332cb 158 unsigned int r=0;
Geremia 7:bb0383b91104 159 _DC = 1; // 1=data
Geremia 7:bb0383b91104 160 _port.input();
Geremia 7:bb0383b91104 161
Geremia 7:bb0383b91104 162 _RD = 0;
Geremia 7:bb0383b91104 163 _port.read(); //dummy read
Geremia 7:bb0383b91104 164 _RD = 1;
Geremia 7:bb0383b91104 165
Geremia 7:bb0383b91104 166 _RD = 0;
Geremia 7:bb0383b91104 167 // _RD = 0; // add wait
Geremia 7:bb0383b91104 168 r |= _port.read();
Geremia 7:bb0383b91104 169 _RD = 1;
Geremia 11:b842b8e332cb 170 if(convert)
Geremia 11:b842b8e332cb 171 {
Geremia 11:b842b8e332cb 172 r <<= 8;
Geremia 11:b842b8e332cb 173 _RD = 0;
Geremia 11:b842b8e332cb 174 // _RD = 0; // add wait
Geremia 11:b842b8e332cb 175 r |= _port.read()>>8; //MSB of port read is blue, LSB is red of next pixel
Geremia 11:b842b8e332cb 176 _RD = 1;
Geremia 11:b842b8e332cb 177 // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
Geremia 11:b842b8e332cb 178 // during reading, you read the raw 18bit gram
Geremia 11:b842b8e332cb 179 r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
Geremia 11:b842b8e332cb 180 }
Geremia 7:bb0383b91104 181 #ifdef USE_CS
Geremia 7:bb0383b91104 182 _CS = 1;
Geremia 7:bb0383b91104 183 #endif
Geremia 7:bb0383b91104 184 _port.output();
Geremia 11:b842b8e332cb 185 return (unsigned short)r;
Geremia 7:bb0383b91104 186 }
Geremia 7:bb0383b91104 187 unsigned int PAR16::rd_reg_data32(unsigned char reg)
Geremia 7:bb0383b91104 188 {
Geremia 7:bb0383b91104 189 #ifdef USE_CS
Geremia 7:bb0383b91104 190 _CS = 0;
Geremia 7:bb0383b91104 191 #endif
Geremia 7:bb0383b91104 192 wr_cmd8(reg);
Geremia 5:b222a9461d6b 193 unsigned int r=0;
Geremia 5:b222a9461d6b 194 _DC = 1; // 1=data
Geremia 5:b222a9461d6b 195 _port.input();
Geremia 5:b222a9461d6b 196
Geremia 5:b222a9461d6b 197 _RD = 0;
Geremia 5:b222a9461d6b 198 _port.read(); //dummy read
Geremia 5:b222a9461d6b 199 _RD = 1;
Geremia 5:b222a9461d6b 200
Geremia 5:b222a9461d6b 201 _RD = 0;
Geremia 5:b222a9461d6b 202 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 203 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 204 r <<= 8;
Geremia 5:b222a9461d6b 205 _RD = 1;
Geremia 5:b222a9461d6b 206
Geremia 5:b222a9461d6b 207 _RD = 0;
Geremia 5:b222a9461d6b 208 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 209 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 210 r <<= 8;
Geremia 5:b222a9461d6b 211 _RD = 1;
Geremia 5:b222a9461d6b 212
Geremia 5:b222a9461d6b 213 _RD = 0;
Geremia 5:b222a9461d6b 214 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 215 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 216 r <<= 8;
Geremia 5:b222a9461d6b 217 _RD = 1;
Geremia 5:b222a9461d6b 218
Geremia 5:b222a9461d6b 219 _RD = 0;
Geremia 5:b222a9461d6b 220 // _RD = 0; // add wait
Geremia 5:b222a9461d6b 221 r |= (_port.read()&0xFF);
Geremia 5:b222a9461d6b 222 _RD = 1;
Geremia 5:b222a9461d6b 223
Geremia 5:b222a9461d6b 224 _CS = 1; // force CS HIG to interupt the cmd in case was not supported
Geremia 5:b222a9461d6b 225 #ifndef USE_CS //if CS is not used, force fixed LOW again
Geremia 5:b222a9461d6b 226 _CS = 0;
Geremia 5:b222a9461d6b 227 #endif
Geremia 5:b222a9461d6b 228 _port.output();
Geremia 5:b222a9461d6b 229 return r;
Geremia 5:b222a9461d6b 230 }
Geremia 7:bb0383b91104 231 // in Par mode EXTC regs (0xB0-0xFF) can be directly read
Geremia 7:bb0383b91104 232 unsigned int PAR16::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
Geremia 5:b222a9461d6b 233 {
Geremia 7:bb0383b91104 234 return rd_reg_data32(reg);
Geremia 5:b222a9461d6b 235 }
Geremia 4:12ba0ecc2c1f 236 void PAR16::hw_reset()
Geremia 4:12ba0ecc2c1f 237 {
Geremia 4:12ba0ecc2c1f 238 wait_ms(15);
Geremia 4:12ba0ecc2c1f 239 _DC = 1;
Geremia 4:12ba0ecc2c1f 240 _CS = 1;
Geremia 4:12ba0ecc2c1f 241 _WR = 1;
Geremia 4:12ba0ecc2c1f 242 _RD = 1;
Geremia 4:12ba0ecc2c1f 243 _reset = 0; // display reset
Geremia 4:12ba0ecc2c1f 244 wait_us(50);
Geremia 4:12ba0ecc2c1f 245 _reset = 1; // end reset
Geremia 4:12ba0ecc2c1f 246 wait_ms(15);
Geremia 4:12ba0ecc2c1f 247 #ifndef USE_CS
Geremia 4:12ba0ecc2c1f 248 _CS=0; // put CS low now and forever
Geremia 4:12ba0ecc2c1f 249 #endif
Geremia 4:12ba0ecc2c1f 250 }
Geremia 4:12ba0ecc2c1f 251 void PAR16::BusEnable(bool enable)
Geremia 4:12ba0ecc2c1f 252 {
Geremia 4:12ba0ecc2c1f 253 _CS = enable ? 0:1;
Geremia 4:12ba0ecc2c1f 254 }