GraphicsDisplay / UniGraphic

Basically i glued Peter Drescher and Simon Ford libs in a GraphicsDisplay class, then derived TFT or LCD class (which inherits Protocols class), then the most derived ones (Inits), which are per-display and are the only part needed to be adapted to diff hw.

Dependents:   testUniGraphic_150217 maze_TFT_MMA8451Q TFT_test_frdm-kl25z TFT_test_NUCLEO-F411RE ... more

Display/TFT932x.cpp@34:c66986d80f72, 2022-01-25 (annotated)

Committer:
Geremia
Date:
Tue Jan 25 17:57:55 2022 +0000
Revision:
34:c66986d80f72
Parent:
30:87855d03d91a 
align attribute fixed to gcc style, updated to OS6 then got bored

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 20:14daa48ffd4c 1 /* mbed UniGraphic library - custom TFT driver class, ILI932x specific
Geremia 20:14daa48ffd4c 2 * Copyright (c) 2015 Giuliano Dianda
Geremia 20:14daa48ffd4c 3 * Released under the MIT License: http://mbed.org/license/mit
Geremia 20:14daa48ffd4c 4 */
dreschpe 27:acb2594b8aa4 5
dreschpe 27:acb2594b8aa4 6 #include "platform.h"
dreschpe 27:acb2594b8aa4 7 #include "TFT932x.h"
Geremia 20:14daa48ffd4c 8
dreschpe 27:acb2594b8aa4 9 #if DEVICE_PORTINOUT
dreschpe 27:acb2594b8aa4 10 #include "PAR8.h"
dreschpe 27:acb2594b8aa4 11 #include "PAR16.h"
dreschpe 27:acb2594b8aa4 12 #endif
Geremia 20:14daa48ffd4c 13
Geremia 20:14daa48ffd4c 14 //#include "mbed_debug.h"
Geremia 20:14daa48ffd4c 15
Geremia 20:14daa48ffd4c 16 #define SWAP(a, b) { a ^= b; b ^= a; a ^= b; }
Geremia 20:14daa48ffd4c 17
dreschpe 25:daacdcf34e52 18 #if DEVICE_PORTINOUT
Geremia 20:14daa48ffd4c 19 TFT932x::TFT932x(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const char *name)
Geremia 20:14daa48ffd4c 20 : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y)
Geremia 20:14daa48ffd4c 21 {
Geremia 20:14daa48ffd4c 22 if(displayproto==PAR_8)
Geremia 20:14daa48ffd4c 23 {
Geremia 20:14daa48ffd4c 24 proto = new PAR8(port, CS, reset, DC, WR, RD);
Geremia 20:14daa48ffd4c 25 dummycycles=1;
Geremia 20:14daa48ffd4c 26 }
Geremia 20:14daa48ffd4c 27 else if(displayproto==PAR_16)
Geremia 20:14daa48ffd4c 28 {
Geremia 20:14daa48ffd4c 29 proto = new PAR16(port, CS, reset, DC, WR, RD);
Geremia 20:14daa48ffd4c 30 dummycycles=0;
Geremia 20:14daa48ffd4c 31 }
Geremia 20:14daa48ffd4c 32 // set_orientation(0);
Geremia 20:14daa48ffd4c 33 foreground(White);
Geremia 20:14daa48ffd4c 34 background(Black);
Geremia 20:14daa48ffd4c 35 set_auto_up(false); //we don't have framebuffer
Geremia 20:14daa48ffd4c 36 usefastwindow=false;
Geremia 20:14daa48ffd4c 37 fastwindowready=false;
Geremia 20:14daa48ffd4c 38 is18bit=false;
Geremia 20:14daa48ffd4c 39 isBGR=false;
Geremia 30:87855d03d91a 40 flipped=0;
Geremia 20:14daa48ffd4c 41 // cls();
Geremia 20:14daa48ffd4c 42 // locate(0,0);
Geremia 20:14daa48ffd4c 43 }
dreschpe 25:daacdcf34e52 44 #endif
dreschpe 27:acb2594b8aa4 45
Geremia 21:ae0a4eedfc90 46 TFT932x::TFT932x(proto_t displayproto, PinName* buspins, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const char *name)
Geremia 21:ae0a4eedfc90 47 : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y)
Geremia 21:ae0a4eedfc90 48 {
Geremia 21:ae0a4eedfc90 49 if(displayproto==BUS_8)
Geremia 21:ae0a4eedfc90 50 {
Geremia 21:ae0a4eedfc90 51 PinName pins[16];
Geremia 21:ae0a4eedfc90 52 for(int i=0; i<16; i++) pins[i]=NC;
Geremia 21:ae0a4eedfc90 53 for(int i=0; i<8; i++) pins[i]=buspins[i];
Geremia 21:ae0a4eedfc90 54 proto = new BUS8(pins, CS, reset, DC, WR, RD);
Geremia 21:ae0a4eedfc90 55 dummycycles=1;
Geremia 21:ae0a4eedfc90 56 }
Geremia 21:ae0a4eedfc90 57 else if(displayproto==BUS_16)
Geremia 21:ae0a4eedfc90 58 {
Geremia 21:ae0a4eedfc90 59 proto = new BUS16(buspins, CS, reset, DC, WR, RD);
Geremia 21:ae0a4eedfc90 60 dummycycles=0;
Geremia 21:ae0a4eedfc90 61 }
Geremia 21:ae0a4eedfc90 62 // set_orientation(0);
Geremia 21:ae0a4eedfc90 63 foreground(White);
Geremia 21:ae0a4eedfc90 64 background(Black);
Geremia 21:ae0a4eedfc90 65 set_auto_up(false); //we don't have framebuffer
Geremia 21:ae0a4eedfc90 66 usefastwindow=false;
Geremia 21:ae0a4eedfc90 67 fastwindowready=false;
Geremia 21:ae0a4eedfc90 68 is18bit=false;
Geremia 21:ae0a4eedfc90 69 isBGR=false;
Geremia 30:87855d03d91a 70 flipped=0;
Geremia 21:ae0a4eedfc90 71 // cls();
Geremia 21:ae0a4eedfc90 72 // locate(0,0);
Geremia 21:ae0a4eedfc90 73 }
Geremia 20:14daa48ffd4c 74 TFT932x::TFT932x(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, const int lcdsize_x, const int lcdsize_y, const char *name)
Geremia 20:14daa48ffd4c 75 : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y)
Geremia 20:14daa48ffd4c 76 {
Geremia 20:14daa48ffd4c 77 if(displayproto==SPI_8)
Geremia 20:14daa48ffd4c 78 {
Geremia 20:14daa48ffd4c 79 proto = new SPI8(Hz, mosi, miso, sclk, CS, reset);
Geremia 20:14daa48ffd4c 80 dummycycles=4;
Geremia 20:14daa48ffd4c 81 }
Geremia 20:14daa48ffd4c 82 else if(displayproto==SPI_16)
Geremia 20:14daa48ffd4c 83 {
Geremia 20:14daa48ffd4c 84 proto = new SPI16(Hz, mosi, miso, sclk, CS, reset);
Geremia 20:14daa48ffd4c 85 dummycycles=2;
Geremia 20:14daa48ffd4c 86 }
Geremia 20:14daa48ffd4c 87 // set_orientation(0);
Geremia 20:14daa48ffd4c 88 foreground(White);
Geremia 20:14daa48ffd4c 89 background(Black);
Geremia 20:14daa48ffd4c 90 set_auto_up(false);
Geremia 20:14daa48ffd4c 91 usefastwindow=false;
Geremia 20:14daa48ffd4c 92 fastwindowready=false;
Geremia 20:14daa48ffd4c 93 is18bit=false;
Geremia 20:14daa48ffd4c 94 isBGR=false;
Geremia 30:87855d03d91a 95 flipped=0;
Geremia 20:14daa48ffd4c 96 // locate(0,0);
Geremia 20:14daa48ffd4c 97 }
Geremia 20:14daa48ffd4c 98 // dummy read needed before read gram
Geremia 20:14daa48ffd4c 99 // read gram protocol function does 1 dymmy read as for MIPI standard, but ILI932x needs more and protocol specific number of cycles
Geremia 20:14daa48ffd4c 100 // for example in spi mode, 5 dummy byte read needed, so for SPI16 2x16bit clocks done here and the 5th dummy will be handled by read gram function
Geremia 20:14daa48ffd4c 101 void TFT932x::dummyread()
Geremia 20:14daa48ffd4c 102 {
Geremia 20:14daa48ffd4c 103 for(unsigned int i=0; i<dummycycles; i++) proto->dummyread();
Geremia 20:14daa48ffd4c 104 }
Geremia 20:14daa48ffd4c 105 void TFT932x::reg_select(unsigned char reg, bool forread)
Geremia 20:14daa48ffd4c 106 {
Geremia 20:14daa48ffd4c 107 proto->reg_select(reg, forread);
Geremia 20:14daa48ffd4c 108 }
Geremia 20:14daa48ffd4c 109 void TFT932x::reg_write(unsigned char reg, unsigned short data)
Geremia 20:14daa48ffd4c 110 {
Geremia 20:14daa48ffd4c 111 proto->reg_write(reg, data);
Geremia 20:14daa48ffd4c 112 }
Geremia 20:14daa48ffd4c 113 unsigned short TFT932x::reg_read(unsigned char reg)
Geremia 20:14daa48ffd4c 114 {
Geremia 20:14daa48ffd4c 115 return proto->reg_read(reg);
Geremia 20:14daa48ffd4c 116 }
Geremia 20:14daa48ffd4c 117 void TFT932x::wr_gram(unsigned short data)
Geremia 20:14daa48ffd4c 118 {
Geremia 20:14daa48ffd4c 119 proto->wr_gram(data);
Geremia 20:14daa48ffd4c 120 }
Geremia 20:14daa48ffd4c 121 void TFT932x::wr_gram(unsigned short data, unsigned int count)
Geremia 20:14daa48ffd4c 122 {
Geremia 20:14daa48ffd4c 123 proto->wr_gram(data, count);
Geremia 20:14daa48ffd4c 124 }
Geremia 20:14daa48ffd4c 125 void TFT932x::wr_grambuf(unsigned short* data, unsigned int lenght)
Geremia 20:14daa48ffd4c 126 {
Geremia 20:14daa48ffd4c 127 proto->wr_grambuf(data, lenght);
Geremia 20:14daa48ffd4c 128 }
Geremia 20:14daa48ffd4c 129 unsigned short TFT932x::rd_gram()
Geremia 20:14daa48ffd4c 130 {
Geremia 20:14daa48ffd4c 131 return proto->rd_gram(is18bit); // protocol will handle 18to16 bit conversion
Geremia 20:14daa48ffd4c 132
Geremia 20:14daa48ffd4c 133 }
Geremia 20:14daa48ffd4c 134 //for TFT, just send data, position counters are in hw
Geremia 20:14daa48ffd4c 135 void TFT932x::window_pushpixel(unsigned short color)
Geremia 20:14daa48ffd4c 136 {
Geremia 20:14daa48ffd4c 137 proto->wr_gram(color);
Geremia 20:14daa48ffd4c 138 }
Geremia 20:14daa48ffd4c 139 void TFT932x::window_pushpixel(unsigned short color, unsigned int count)
Geremia 20:14daa48ffd4c 140 {
Geremia 20:14daa48ffd4c 141 proto->wr_gram(color, count);
Geremia 20:14daa48ffd4c 142 }
Geremia 20:14daa48ffd4c 143 void TFT932x::window_pushpixelbuf(unsigned short* color, unsigned int lenght)
Geremia 20:14daa48ffd4c 144 {
Geremia 20:14daa48ffd4c 145 proto->wr_grambuf(color, lenght);
Geremia 20:14daa48ffd4c 146 }
Geremia 20:14daa48ffd4c 147 void TFT932x::hw_reset()
Geremia 20:14daa48ffd4c 148 {
Geremia 20:14daa48ffd4c 149 proto->hw_reset();
Geremia 20:14daa48ffd4c 150 BusEnable(true);
Geremia 20:14daa48ffd4c 151 }
Geremia 20:14daa48ffd4c 152 void TFT932x::BusEnable(bool enable)
Geremia 20:14daa48ffd4c 153 {
Geremia 20:14daa48ffd4c 154 proto->BusEnable(enable);
Geremia 20:14daa48ffd4c 155 }
Geremia 20:14daa48ffd4c 156 // ILI932x can't rotate in hw (swap raw<->columns) for landscape views,
Geremia 20:14daa48ffd4c 157 // but can change the way address counter is auto incremented/decremented
Geremia 20:14daa48ffd4c 158 void TFT932x::set_orientation(int o)
Geremia 20:14daa48ffd4c 159 {
Geremia 20:14daa48ffd4c 160 // if(orientation == o) return;
Geremia 20:14daa48ffd4c 161 orientation = o;
Geremia 20:14daa48ffd4c 162 switch (orientation)
Geremia 20:14daa48ffd4c 163 // BGR bit set for all modes, seems most TFT are like that, in case override set_orientation() in init
Geremia 20:14daa48ffd4c 164 // ORG bit set for all modes
Geremia 20:14daa48ffd4c 165 {
Geremia 20:14daa48ffd4c 166 case 0:// default, portrait view 0°
Geremia 30:87855d03d91a 167 reg_write(0x0001,((flipped&FLIP_X)==0) ? 0x0100:0x0000); // S720toS1 or S1toS720
Geremia 30:87855d03d91a 168 reg_write(0x0060,((flipped&FLIP_Y)==0) ? 0xA700:0x2700); // G320toG1 or G1toG320
Geremia 20:14daa48ffd4c 169 reg_write(0x03, 0x10B0);
Geremia 20:14daa48ffd4c 170 set_width(screensize_X);
Geremia 20:14daa48ffd4c 171 set_height(screensize_Y);
Geremia 20:14daa48ffd4c 172 break;
Geremia 20:14daa48ffd4c 173 case 1:// landscape view +90°
Geremia 30:87855d03d91a 174 reg_write(0x0001,((flipped&FLIP_X)==0) ? 0x0000:0x0100); // S1toS720 or S720toS1
Geremia 30:87855d03d91a 175 reg_write(0x0060,((flipped&FLIP_Y)==0) ? 0xA700:0x2700); // G320toG1 or G1toG320
Geremia 20:14daa48ffd4c 176 reg_write(0x03, 0x10B8); // AM=1 increase addr ctr first vertically then horizontally
Geremia 20:14daa48ffd4c 177 set_width(screensize_Y);
Geremia 20:14daa48ffd4c 178 set_height(screensize_X);
Geremia 20:14daa48ffd4c 179 break;
Geremia 20:14daa48ffd4c 180 case 2:// portrait view +180°
Geremia 30:87855d03d91a 181 reg_write(0x0001,((flipped&FLIP_X)==0) ? 0x0000:0x0100); // S1toS720 or S720toS1
Geremia 30:87855d03d91a 182 reg_write(0x0060,((flipped&FLIP_Y)==0) ? 0x2700:0xA700); // G1toG320 or G320toG1
Geremia 20:14daa48ffd4c 183 reg_write(0x03, 0x10B0);
Geremia 20:14daa48ffd4c 184 set_width(screensize_X);
Geremia 20:14daa48ffd4c 185 set_height(screensize_Y);
Geremia 20:14daa48ffd4c 186 break;
Geremia 20:14daa48ffd4c 187 case 3:// landscape view -90°
Geremia 30:87855d03d91a 188 reg_write(0x0001,((flipped&FLIP_X)==0) ? 0x0100:0x0000); // S720toS1 or S1toS720
Geremia 30:87855d03d91a 189 reg_write(0x0060,((flipped&FLIP_Y)==0) ? 0x2700:0xA700); // G1toG320 or G320toG1
Geremia 20:14daa48ffd4c 190 reg_write(0x03, 0x10B8); // AM=1 increase addr ctr first vertically then horizontally
Geremia 20:14daa48ffd4c 191 set_width(screensize_Y);
Geremia 20:14daa48ffd4c 192 set_height(screensize_X);
Geremia 20:14daa48ffd4c 193 break;
Geremia 20:14daa48ffd4c 194 }
Geremia 20:14daa48ffd4c 195 }
Geremia 20:14daa48ffd4c 196 void TFT932x::invert(unsigned char o)
Geremia 20:14daa48ffd4c 197 {
Geremia 20:14daa48ffd4c 198 unsigned short oldreg = reg_read(0x61);
Geremia 20:14daa48ffd4c 199 if(o == 0) reg_write(0x61, oldreg|1); // seems most TFT have REV bit enabled for normal display
Geremia 20:14daa48ffd4c 200 else reg_write(0x61, oldreg&0xFFFE);
Geremia 20:14daa48ffd4c 201 }
Geremia 20:14daa48ffd4c 202 void TFT932x::FastWindow(bool enable)
Geremia 20:14daa48ffd4c 203 {
Geremia 20:14daa48ffd4c 204 usefastwindow=enable;
Geremia 20:14daa48ffd4c 205 }
Geremia 20:14daa48ffd4c 206 // TFT have both column and raw autoincrement inside a window, with internal counters
Geremia 20:14daa48ffd4c 207 void TFT932x::window(int x, int y, int w, int h)
Geremia 20:14daa48ffd4c 208 {
Geremia 20:14daa48ffd4c 209 if(orientation==1 || orientation==3)
Geremia 20:14daa48ffd4c 210 {
Geremia 20:14daa48ffd4c 211 SWAP(x,y);
Geremia 20:14daa48ffd4c 212 SWAP(w,h);
Geremia 20:14daa48ffd4c 213 }
Geremia 20:14daa48ffd4c 214 fastwindowready=false; // end raw/column going to be set to lower value than bottom-right corner
Geremia 20:14daa48ffd4c 215 reg_write(0x50, x);//start column
Geremia 20:14daa48ffd4c 216 reg_write(0x51, x+w-1);//end column
Geremia 20:14daa48ffd4c 217 reg_write(0x52, y);//start page
Geremia 20:14daa48ffd4c 218 reg_write(0x53, y+h-1);//end page
Geremia 20:14daa48ffd4c 219
Geremia 20:14daa48ffd4c 220 reg_write(0x20, 0); // since ORG bit is set, address is windows relative, so should be set always to 0000
Geremia 20:14daa48ffd4c 221 reg_write(0x21, 0);
Geremia 20:14daa48ffd4c 222
Geremia 20:14daa48ffd4c 223 reg_select(0x22, false); //write mem, just write gram next
Geremia 20:14daa48ffd4c 224 }
Geremia 20:14daa48ffd4c 225 void TFT932x::window4read(int x, int y, int w, int h)
Geremia 20:14daa48ffd4c 226 {
Geremia 20:14daa48ffd4c 227 if(orientation==1 || orientation==3)
Geremia 20:14daa48ffd4c 228 {
Geremia 20:14daa48ffd4c 229 SWAP(x,y);
Geremia 20:14daa48ffd4c 230 SWAP(w,h);
Geremia 20:14daa48ffd4c 231 }
Geremia 20:14daa48ffd4c 232 fastwindowready=false; // end raw/column going to be set to lower value than bottom-right corner
Geremia 20:14daa48ffd4c 233 reg_write(0x50, x);//start column
Geremia 20:14daa48ffd4c 234 reg_write(0x51, x+w-1);//end column
Geremia 20:14daa48ffd4c 235 reg_write(0x52, y);//start page
Geremia 20:14daa48ffd4c 236 reg_write(0x53, y+h-1);//end page
Geremia 20:14daa48ffd4c 237
Geremia 20:14daa48ffd4c 238 reg_write(0x20, 0); // since ORG bit is set, address is windows relative, so should be set always to 0000
Geremia 20:14daa48ffd4c 239 reg_write(0x21, 0);
Geremia 20:14daa48ffd4c 240
Geremia 20:14daa48ffd4c 241 reg_select(0x22, true); //read mem, just read gram next
Geremia 20:14daa48ffd4c 242 dummyread();
Geremia 20:14daa48ffd4c 243 }
Geremia 20:14daa48ffd4c 244 void TFT932x::pixel(int x, int y, unsigned short color)
Geremia 20:14daa48ffd4c 245 {
Geremia 20:14daa48ffd4c 246 if(usefastwindow)
Geremia 20:14daa48ffd4c 247 {
Geremia 20:14daa48ffd4c 248 if(fastwindowready) //setting only start column/page does speedup, but needs end raw/column previously set to bottom-right corner
Geremia 20:14daa48ffd4c 249 {
Geremia 20:14daa48ffd4c 250 if(orientation==1 || orientation==3) SWAP(x,y);
Geremia 20:14daa48ffd4c 251 reg_write(0x50, x);//start column only
Geremia 20:14daa48ffd4c 252 reg_write(0x52, y);//start page only
Geremia 20:14daa48ffd4c 253 reg_write(0x20, 0); // since ORG bit is set, address is window relative, so should be set always to 0000
Geremia 20:14daa48ffd4c 254 reg_write(0x21, 0);
Geremia 20:14daa48ffd4c 255 reg_select(0x22, false); //write mem, just write gram next
Geremia 20:14daa48ffd4c 256 }
Geremia 20:14daa48ffd4c 257 else
Geremia 20:14daa48ffd4c 258 {
Geremia 20:14daa48ffd4c 259 window(x,y,width()-x,height()-y); // set also end raw/column to bottom-right corner
Geremia 20:14daa48ffd4c 260 fastwindowready=true;
Geremia 20:14daa48ffd4c 261 }
Geremia 20:14daa48ffd4c 262 }
Geremia 20:14daa48ffd4c 263 else window(x,y,1,1);
Geremia 20:14daa48ffd4c 264 wr_gram(color);
Geremia 20:14daa48ffd4c 265 }
Geremia 20:14daa48ffd4c 266 unsigned short TFT932x::pixelread(int x, int y)
Geremia 20:14daa48ffd4c 267 {
Geremia 20:14daa48ffd4c 268 /* if(usefastwindow) // for ILI9325 fastwindows for reading works only in PAR16
Geremia 20:14daa48ffd4c 269 {
Geremia 20:14daa48ffd4c 270 if(fastwindowready) //setting only start column/page does speedup, but needs end raw/column previously set to bottom-right corner
Geremia 20:14daa48ffd4c 271 {
Geremia 20:14daa48ffd4c 272 if(orientation==1 || orientation==3) SWAP(x,y);
Geremia 20:14daa48ffd4c 273 reg_write(0x50, x);//start column only
Geremia 20:14daa48ffd4c 274 reg_write(0x52, y);//start page only
Geremia 20:14daa48ffd4c 275 reg_write(0x20, 0); // since ORG bit is set, address is window relative, so should be set always to 0000
Geremia 20:14daa48ffd4c 276 reg_write(0x21, 0);
Geremia 20:14daa48ffd4c 277 reg_select(0x22, true); //read mem, just read gram next
Geremia 20:14daa48ffd4c 278 }
Geremia 20:14daa48ffd4c 279 else
Geremia 20:14daa48ffd4c 280 {
Geremia 20:14daa48ffd4c 281 window4read(x,y,width()-x,height()-y); // set also end raw/column to bottom-right corner
Geremia 20:14daa48ffd4c 282 fastwindowready=true;
Geremia 20:14daa48ffd4c 283 }
Geremia 20:14daa48ffd4c 284 }
Geremia 20:14daa48ffd4c 285 else*/
Geremia 20:14daa48ffd4c 286 window4read(x,y,1,1);
Geremia 20:14daa48ffd4c 287
Geremia 20:14daa48ffd4c 288 unsigned short color;
Geremia 20:14daa48ffd4c 289 color = rd_gram();
Geremia 20:14daa48ffd4c 290 if(isBGR) color = BGR2RGB(color); // in case, convert BGR to RGB
Geremia 20:14daa48ffd4c 291 return color;
Geremia 20:14daa48ffd4c 292 }
Geremia 20:14daa48ffd4c 293 void TFT932x::setscrollarea (int startY, int areasize) // ie 0,480 for whole screen
Geremia 20:14daa48ffd4c 294 {
Geremia 20:14daa48ffd4c 295 // ILI932x allows only ful lscreen scrolling
Geremia 20:14daa48ffd4c 296 unsigned short oldreg = reg_read(0x61);
Geremia 20:14daa48ffd4c 297 reg_write(0x61, oldreg|2); // enable scroll
Geremia 20:14daa48ffd4c 298 }
Geremia 20:14daa48ffd4c 299 void TFT932x::scroll (int lines) // ie 1= scrollup 1, 479= scrolldown 1
Geremia 20:14daa48ffd4c 300 {
Geremia 20:14daa48ffd4c 301 reg_write(0x6A, lines%screensize_Y); // select the (absolute)line which will be displayed as first line
Geremia 20:14daa48ffd4c 302 }
Geremia 20:14daa48ffd4c 303 void TFT932x::scrollreset()
Geremia 20:14daa48ffd4c 304 {
Geremia 20:14daa48ffd4c 305 unsigned short oldreg = reg_read(0x61);
Geremia 20:14daa48ffd4c 306 // reg_write(0x61, oldreg&0xFFFD); // disable scroll
Geremia 20:14daa48ffd4c 307 reg_write(0x6A, 0);
Geremia 20:14daa48ffd4c 308 }
Geremia 20:14daa48ffd4c 309 void TFT932x::cls (void)
Geremia 20:14daa48ffd4c 310 {
Geremia 20:14daa48ffd4c 311 WindowMax();
Geremia 20:14daa48ffd4c 312 wr_gram(_background,screensize_X*screensize_Y);
Geremia 20:14daa48ffd4c 313 }
Geremia 20:14daa48ffd4c 314 // try to get read gram pixel format, could be 16bit or 18bit, RGB or BGR
Geremia 20:14daa48ffd4c 315 void TFT932x::auto_gram_read_format()
Geremia 20:14daa48ffd4c 316 {
Geremia 20:14daa48ffd4c 317 unsigned short px=0xCDB1;
Geremia 20:14daa48ffd4c 318 unsigned short rback, rback18;
Geremia 20:14daa48ffd4c 319 pixel(0,0,px);
Geremia 20:14daa48ffd4c 320 window4read(0,0,1,1);
Geremia 20:14daa48ffd4c 321 rback=proto->rd_gram(0); // try 16bit
Geremia 20:14daa48ffd4c 322 window4read(0,0,1,1);
Geremia 20:14daa48ffd4c 323 rback18=proto->rd_gram(1); // try 18bit converted to 16
Geremia 20:14daa48ffd4c 324 if((rback18==px) || (BGR2RGB(rback18)==px))
Geremia 20:14daa48ffd4c 325 {
Geremia 20:14daa48ffd4c 326 is18bit=true;
Geremia 20:14daa48ffd4c 327 if(BGR2RGB(rback18)==px) isBGR=true;
Geremia 20:14daa48ffd4c 328 }
Geremia 20:14daa48ffd4c 329 else if((rback==px) || (BGR2RGB(rback)==px))
Geremia 20:14daa48ffd4c 330 {
Geremia 20:14daa48ffd4c 331 if(BGR2RGB(rback)==px) isBGR=true;
Geremia 20:14daa48ffd4c 332 }
Geremia 20:14daa48ffd4c 333 // debug("\r\nIdentify gram read color format,\r\nsent %.4X read16 %.4X(bgr%.4X) read18 %.4X(bgr%.4X)", px, rback, BGR2RGB(rback), rback18, BGR2RGB(rback18));
Geremia 20:14daa48ffd4c 334 }
Geremia 20:14daa48ffd4c 335 // try to identify display controller
Geremia 20:14daa48ffd4c 336 void TFT932x::identify()
Geremia 20:14daa48ffd4c 337 {
Geremia 20:14daa48ffd4c 338 tftID = reg_read(0x00);
Geremia 20:14daa48ffd4c 339 hw_reset(); // in case wrong cmd messed up important settings
Geremia 20:14daa48ffd4c 340 }
Geremia 20:14daa48ffd4c 341 int TFT932x::sizeX()
Geremia 20:14daa48ffd4c 342 {
Geremia 20:14daa48ffd4c 343 return screensize_X;
Geremia 20:14daa48ffd4c 344 }
Geremia 20:14daa48ffd4c 345 int TFT932x::sizeY()
Geremia 20:14daa48ffd4c 346 {
Geremia 20:14daa48ffd4c 347 return screensize_Y;
Geremia 20:14daa48ffd4c 348 }