Radu Radoveneanu / 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.

Fork of UniGraphic by GraphicsDisplay

Display/LCD.cpp@1:ff019d22b275, 2015-02-13 (annotated)

Committer:
Geremia
Date:
Fri Feb 13 15:25:10 2015 +0000
Revision:
1:ff019d22b275
Parent:
0:75ec1b3cde17
Child:
2:713844a55c4e
Added SPI_16, LCD done

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 0:75ec1b3cde17 1 #include "LCD.h"
Geremia 0:75ec1b3cde17 2
Geremia 0:75ec1b3cde17 3 //#include "mbed_debug.h"
Geremia 0:75ec1b3cde17 4 //#define LCDPAGES (LCDSIZE_Y>>3) // 8raws per page
Geremia 0:75ec1b3cde17 5 //#define IC_PAGES (IC_Y_COMS>>3) // max pages in IC ddram, 8raws per page
Geremia 0:75ec1b3cde17 6 #define SWAP(a, b) { a ^= b; b ^= a; a ^= b; }
Geremia 1:ff019d22b275 7 //#define USEFRAMEBUFFER
Geremia 1:ff019d22b275 8 #define NOPCMD 0xE300
Geremia 0:75ec1b3cde17 9 //#define FRAMEBUFSIZE (LCDSIZE_X*LCDPAGES)
Geremia 0:75ec1b3cde17 10 Protocols* proto;
Geremia 0:75ec1b3cde17 11
Geremia 0:75ec1b3cde17 12 LCD::LCD(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char *name)
Geremia 0:75ec1b3cde17 13 : /*PAR8(port, CS, reset, DC, WR, RD),*/ GraphicsDisplay(name), LCDSIZE_X(lcdsize_x), LCDSIZE_Y(lcdsize_y), LCDPAGES(lcdsize_y>>3), IC_X_SEGS(ic_x_segs), IC_Y_COMS(ic_y_coms), IC_PAGES(ic_y_coms>>3)
Geremia 0:75ec1b3cde17 14 {
Geremia 0:75ec1b3cde17 15 // LCDPAGES = LCDSIZE_Y>>3;
Geremia 0:75ec1b3cde17 16 // IC_PAGES = IC_Y_COMS>>3;
Geremia 0:75ec1b3cde17 17 // buffer = new unsigned char [LCDSIZE_X*LCDPAGES];
Geremia 0:75ec1b3cde17 18 // PAR8 par8proto(port, CS, reset, DC, WR, RD);
Geremia 0:75ec1b3cde17 19 if(displayproto==PAR_8) proto = new PAR8(port, CS, reset, DC, WR, RD);
Geremia 1:ff019d22b275 20 useNOP=false;
Geremia 0:75ec1b3cde17 21 buffer = (unsigned char*) malloc (LCDSIZE_X*LCDPAGES);
Geremia 1:ff019d22b275 22 buffer16 = (unsigned short*)buffer;
Geremia 0:75ec1b3cde17 23 draw_mode = NORMAL;
Geremia 0:75ec1b3cde17 24 set_orientation(1);
Geremia 0:75ec1b3cde17 25 // cls();
Geremia 0:75ec1b3cde17 26 // locate(0,0);
Geremia 0:75ec1b3cde17 27 }
Geremia 1:ff019d22b275 28 LCD::LCD(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char *name)
Geremia 0:75ec1b3cde17 29 : GraphicsDisplay(name), LCDSIZE_X(lcdsize_x), LCDSIZE_Y(lcdsize_y), LCDPAGES(lcdsize_y>>3), IC_X_SEGS(ic_x_segs), IC_Y_COMS(ic_y_coms), IC_PAGES(ic_y_coms>>3)
Geremia 0:75ec1b3cde17 30 {
Geremia 0:75ec1b3cde17 31 // LCDPAGES = LCDSIZE_Y>>3;
Geremia 0:75ec1b3cde17 32 // IC_PAGES = IC_Y_COMS>>3;
Geremia 0:75ec1b3cde17 33 // buffer = new unsigned char [LCDSIZE_X*LCDPAGES];
Geremia 0:75ec1b3cde17 34 // PAR8 par8proto(port, CS, reset, DC, WR, RD);
Geremia 1:ff019d22b275 35 if(displayproto==SPI_8)
Geremia 1:ff019d22b275 36 {
Geremia 1:ff019d22b275 37 proto = new SPI8(Hz, mosi, miso, sclk, CS, reset, DC);
Geremia 1:ff019d22b275 38 useNOP=false;
Geremia 1:ff019d22b275 39 }
Geremia 1:ff019d22b275 40 else if(displayproto==SPI_16)
Geremia 1:ff019d22b275 41 {
Geremia 1:ff019d22b275 42 proto = new SPI16(Hz, mosi, miso, sclk, CS, reset, DC);
Geremia 1:ff019d22b275 43 useNOP=true;
Geremia 1:ff019d22b275 44 }
Geremia 0:75ec1b3cde17 45 buffer = (unsigned char*) malloc (LCDSIZE_X*LCDPAGES);
Geremia 1:ff019d22b275 46 buffer16 = (unsigned short*)buffer;
Geremia 0:75ec1b3cde17 47 draw_mode = NORMAL;
Geremia 0:75ec1b3cde17 48 // cls();
Geremia 0:75ec1b3cde17 49 set_orientation(1);
Geremia 0:75ec1b3cde17 50 // locate(0,0);
Geremia 1:ff019d22b275 51
Geremia 0:75ec1b3cde17 52 }
Geremia 0:75ec1b3cde17 53 LCD::~LCD()
Geremia 0:75ec1b3cde17 54 {
Geremia 0:75ec1b3cde17 55 free(buffer);
Geremia 0:75ec1b3cde17 56 }
Geremia 0:75ec1b3cde17 57
Geremia 1:ff019d22b275 58 void LCD::wr_cmd8(unsigned char cmd)
Geremia 0:75ec1b3cde17 59 {
Geremia 1:ff019d22b275 60 if(useNOP) proto->wr_cmd16(NOPCMD|cmd);
Geremia 1:ff019d22b275 61 else proto->wr_cmd8(cmd);
Geremia 0:75ec1b3cde17 62 }
Geremia 1:ff019d22b275 63 void LCD::wr_data8(unsigned char data)
Geremia 0:75ec1b3cde17 64 {
Geremia 1:ff019d22b275 65 proto->wr_data8(data);
Geremia 1:ff019d22b275 66 }
Geremia 1:ff019d22b275 67 void LCD::wr_data8(unsigned char data, unsigned int count)
Geremia 1:ff019d22b275 68 {
Geremia 1:ff019d22b275 69 proto->wr_data8(data, count);
Geremia 0:75ec1b3cde17 70 }
Geremia 1:ff019d22b275 71 void LCD::wr_data8buf(unsigned char* data, unsigned int lenght)
Geremia 0:75ec1b3cde17 72 {
Geremia 1:ff019d22b275 73 proto->wr_data8buf(data, lenght);
Geremia 1:ff019d22b275 74 }
Geremia 1:ff019d22b275 75 void LCD::wr_cmd16(unsigned short cmd)
Geremia 1:ff019d22b275 76 {
Geremia 1:ff019d22b275 77 proto->wr_cmd16(cmd);
Geremia 0:75ec1b3cde17 78 }
Geremia 1:ff019d22b275 79 void LCD::wr_data16(unsigned short data, unsigned int count)
Geremia 0:75ec1b3cde17 80 {
Geremia 1:ff019d22b275 81 proto->wr_data16(data, count);
Geremia 1:ff019d22b275 82 }
Geremia 1:ff019d22b275 83 void LCD::wr_data16buf(unsigned short* data, unsigned int lenght)
Geremia 1:ff019d22b275 84 {
Geremia 1:ff019d22b275 85 proto->wr_data16buf(data, lenght);
Geremia 0:75ec1b3cde17 86 }
Geremia 0:75ec1b3cde17 87 void LCD::hw_reset()
Geremia 0:75ec1b3cde17 88 {
Geremia 0:75ec1b3cde17 89 proto->hw_reset();
Geremia 0:75ec1b3cde17 90 }
Geremia 0:75ec1b3cde17 91 void LCD::BusEnable(bool enable)
Geremia 0:75ec1b3cde17 92 {
Geremia 0:75ec1b3cde17 93 proto->BusEnable(enable);
Geremia 0:75ec1b3cde17 94 }
Geremia 0:75ec1b3cde17 95
Geremia 0:75ec1b3cde17 96
Geremia 0:75ec1b3cde17 97
Geremia 0:75ec1b3cde17 98 // monochrome LCD driver ICs does not have ram rotate in hw (swap raw<->columns) like TFT displays
Geremia 0:75ec1b3cde17 99 // for portrait views, XY swap will be done in sw in pixel() function
Geremia 0:75ec1b3cde17 100 void LCD::set_orientation(int o)
Geremia 0:75ec1b3cde17 101 {
Geremia 0:75ec1b3cde17 102 orientation = o;
Geremia 0:75ec1b3cde17 103 switch (o) {
Geremia 0:75ec1b3cde17 104 case (0):// portrait view -90°
Geremia 0:75ec1b3cde17 105 mirrorXY(Y);
Geremia 0:75ec1b3cde17 106 col_offset = 0;
Geremia 0:75ec1b3cde17 107 page_offset = IC_PAGES-LCDPAGES;
Geremia 0:75ec1b3cde17 108 set_width(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 109 set_height(LCDSIZE_X);
Geremia 0:75ec1b3cde17 110 // portrait = true;
Geremia 0:75ec1b3cde17 111 break;
Geremia 0:75ec1b3cde17 112 case (1): // default, landscape view 0°
Geremia 0:75ec1b3cde17 113 mirrorXY(NONE);
Geremia 0:75ec1b3cde17 114 col_offset = 0;
Geremia 0:75ec1b3cde17 115 page_offset = 0;
Geremia 0:75ec1b3cde17 116 set_width(LCDSIZE_X);
Geremia 0:75ec1b3cde17 117 set_height(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 118 // portrait = false;
Geremia 0:75ec1b3cde17 119 break;
Geremia 0:75ec1b3cde17 120 case (2):// portrait view +90°
Geremia 0:75ec1b3cde17 121 mirrorXY(X);
Geremia 0:75ec1b3cde17 122 col_offset = IC_X_SEGS-LCDSIZE_X; // some displays have less pixels than IC ram
Geremia 0:75ec1b3cde17 123 page_offset = 0;
Geremia 0:75ec1b3cde17 124 set_width(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 125 set_height(LCDSIZE_X);
Geremia 0:75ec1b3cde17 126 // portrait = true;
Geremia 0:75ec1b3cde17 127 break;
Geremia 0:75ec1b3cde17 128 case (3):// landscape view +180°
Geremia 0:75ec1b3cde17 129 mirrorXY(XY);
Geremia 0:75ec1b3cde17 130 col_offset = IC_X_SEGS-LCDSIZE_X;
Geremia 0:75ec1b3cde17 131 page_offset = IC_PAGES-LCDPAGES;
Geremia 0:75ec1b3cde17 132 set_width(LCDSIZE_X);
Geremia 0:75ec1b3cde17 133 set_height(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 134 // portrait = false;
Geremia 0:75ec1b3cde17 135 break;
Geremia 0:75ec1b3cde17 136 }
Geremia 0:75ec1b3cde17 137 }
Geremia 0:75ec1b3cde17 138 void LCD::mirrorXY(mirror_t mode)
Geremia 0:75ec1b3cde17 139 {
Geremia 0:75ec1b3cde17 140 switch (mode)
Geremia 0:75ec1b3cde17 141 {
Geremia 0:75ec1b3cde17 142 case(NONE):
Geremia 1:ff019d22b275 143 // wr_cmd8(0xA0);
Geremia 1:ff019d22b275 144 wr_cmd16(0xA0C8); // this is in real Y mirror command, but seems most displays have COMs wired inverted, so assume this is the default no-y-mirror
Geremia 0:75ec1b3cde17 145 break;
Geremia 0:75ec1b3cde17 146 case(X):
Geremia 1:ff019d22b275 147 // wr_cmd8(0xA1);
Geremia 1:ff019d22b275 148 wr_cmd16(0xA1C8);
Geremia 0:75ec1b3cde17 149 break;
Geremia 0:75ec1b3cde17 150 case(Y):
Geremia 1:ff019d22b275 151 // wr_cmd8(0xA0);
Geremia 1:ff019d22b275 152 wr_cmd16(0xA0C0);
Geremia 0:75ec1b3cde17 153 break;
Geremia 0:75ec1b3cde17 154 case(XY):
Geremia 1:ff019d22b275 155 // wr_cmd8(0xA1);
Geremia 1:ff019d22b275 156 wr_cmd16(0xA1C0);
Geremia 0:75ec1b3cde17 157 break;
Geremia 0:75ec1b3cde17 158 }
Geremia 0:75ec1b3cde17 159 }
Geremia 0:75ec1b3cde17 160 void LCD::invert(unsigned char o)
Geremia 0:75ec1b3cde17 161 {
Geremia 1:ff019d22b275 162 if(o == 0) wr_cmd8(0xA6);
Geremia 1:ff019d22b275 163 else wr_cmd8(0xA7);
Geremia 0:75ec1b3cde17 164 }
Geremia 0:75ec1b3cde17 165
Geremia 0:75ec1b3cde17 166 void LCD::set_contrast(int o)
Geremia 0:75ec1b3cde17 167 {
Geremia 0:75ec1b3cde17 168 contrast = o;
Geremia 1:ff019d22b275 169 // wr_cmd8(0x81); // set volume
Geremia 1:ff019d22b275 170 wr_cmd16(0x8100|(o&0x3F));
Geremia 0:75ec1b3cde17 171 }
Geremia 0:75ec1b3cde17 172 void LCD::set_auto_up(bool up)
Geremia 0:75ec1b3cde17 173 {
Geremia 0:75ec1b3cde17 174 if(up) auto_up = true;
Geremia 0:75ec1b3cde17 175 else auto_up = false;
Geremia 0:75ec1b3cde17 176 }
Geremia 0:75ec1b3cde17 177 bool LCD::get_auto_up(void)
Geremia 0:75ec1b3cde17 178 {
Geremia 0:75ec1b3cde17 179 return (auto_up);
Geremia 0:75ec1b3cde17 180 }
Geremia 0:75ec1b3cde17 181 int LCD::get_contrast(void)
Geremia 0:75ec1b3cde17 182 {
Geremia 0:75ec1b3cde17 183 return(contrast);
Geremia 0:75ec1b3cde17 184 }
Geremia 0:75ec1b3cde17 185 void LCD::window(int x, int y, int w, int h) {
Geremia 0:75ec1b3cde17 186 // current pixel location
Geremia 0:75ec1b3cde17 187 cur_x = x;
Geremia 0:75ec1b3cde17 188 cur_y = y;
Geremia 0:75ec1b3cde17 189 // window settings
Geremia 0:75ec1b3cde17 190 win_x1 = x;
Geremia 0:75ec1b3cde17 191 win_x2 = x + w - 1;
Geremia 0:75ec1b3cde17 192 win_y1 = y;
Geremia 0:75ec1b3cde17 193 win_y2 = y + h - 1;
Geremia 0:75ec1b3cde17 194 }
Geremia 0:75ec1b3cde17 195 void LCD::window_pushpixel(unsigned short color) {
Geremia 0:75ec1b3cde17 196 pixel(cur_x, cur_y, color);
Geremia 0:75ec1b3cde17 197 cur_x++;
Geremia 0:75ec1b3cde17 198 if(cur_x > win_x2) {
Geremia 0:75ec1b3cde17 199 cur_x = win_x1;
Geremia 0:75ec1b3cde17 200 cur_y++;
Geremia 0:75ec1b3cde17 201 if(cur_y > win_y2) {
Geremia 0:75ec1b3cde17 202 cur_y = win_y1;
Geremia 0:75ec1b3cde17 203 }
Geremia 0:75ec1b3cde17 204 }
Geremia 0:75ec1b3cde17 205 }
Geremia 0:75ec1b3cde17 206 void LCD::pixel(int x, int y, unsigned short color)
Geremia 0:75ec1b3cde17 207 {
Geremia 0:75ec1b3cde17 208 if(!(orientation&1)) SWAP(x,y);
Geremia 0:75ec1b3cde17 209 // first check parameter
Geremia 0:75ec1b3cde17 210 if((x >= LCDSIZE_X) || (y >= LCDSIZE_Y)) return;
Geremia 0:75ec1b3cde17 211
Geremia 0:75ec1b3cde17 212 // if(draw_mode == NORMAL)
Geremia 0:75ec1b3cde17 213 // {
Geremia 1:ff019d22b275 214 if(color == 0) buffer[(x + ((y>>3)*LCDSIZE_X))^1] &= ~(1 << (y&7)); // erase pixel
Geremia 1:ff019d22b275 215 else buffer[(x + ((y>>3)*LCDSIZE_X))^1] |= (1 << (y&7)); // set pixel
Geremia 0:75ec1b3cde17 216 // }
Geremia 0:75ec1b3cde17 217 // else
Geremia 0:75ec1b3cde17 218 // { // XOR mode
Geremia 0:75ec1b3cde17 219 // if(color == 1) buffer[x + ((y>>3) * LCDSIZE_X)] ^= (1 << (y&7)); // xor pixel
Geremia 0:75ec1b3cde17 220 // }
Geremia 0:75ec1b3cde17 221 }
Geremia 0:75ec1b3cde17 222 void LCD::copy_to_lcd(void)
Geremia 0:75ec1b3cde17 223 {
Geremia 0:75ec1b3cde17 224 unsigned short i=0;
Geremia 1:ff019d22b275 225 unsigned short setcolcmd = 0x0010 | ((col_offset&0xF)<<8) | (col_offset>>4);
Geremia 0:75ec1b3cde17 226 for(int page=0; page<LCDPAGES; page++)
Geremia 0:75ec1b3cde17 227 {
Geremia 1:ff019d22b275 228 // wr_cmd8(col_offset&0xF); // set column low nibble
Geremia 1:ff019d22b275 229 // wr_cmd8(0x10|(col_offset>>4)); // set column hi nibble
Geremia 1:ff019d22b275 230 wr_cmd16(setcolcmd);
Geremia 1:ff019d22b275 231 wr_cmd8(0xB0|(page+page_offset)); // set page
Geremia 1:ff019d22b275 232 wr_data16buf(buffer16+i, LCDSIZE_X>>1); // send whole page pixels
Geremia 1:ff019d22b275 233 i+=LCDSIZE_X>>1;
Geremia 0:75ec1b3cde17 234 }
Geremia 0:75ec1b3cde17 235 }
Geremia 0:75ec1b3cde17 236 void LCD::cls(void)
Geremia 0:75ec1b3cde17 237 {
Geremia 0:75ec1b3cde17 238 memset(buffer,0x00,LCDSIZE_X*LCDPAGES); // clear display buffer
Geremia 1:ff019d22b275 239 unsigned short setcolcmd = 0x0010 | ((col_offset&0xF)<<8) | (col_offset>>4);
Geremia 0:75ec1b3cde17 240 for(int page=0; page<LCDPAGES; page++)
Geremia 0:75ec1b3cde17 241 {
Geremia 1:ff019d22b275 242 // wr_cmd8((unsigned char)col_offset&0xF); // set column low nibble
Geremia 1:ff019d22b275 243 // wr_cmd8(0x10|(col_offset>>4)); // set column hi nibble
Geremia 1:ff019d22b275 244 wr_cmd16(setcolcmd);
Geremia 1:ff019d22b275 245 wr_cmd8(0xB0|(page+page_offset)); // set page
Geremia 1:ff019d22b275 246 wr_data16(0, LCDSIZE_X>>1); // send whole page pixels =0
Geremia 0:75ec1b3cde17 247 }
Geremia 0:75ec1b3cde17 248 }