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@0:75ec1b3cde17, 2015-02-12 (annotated)

Committer:
Geremia
Date:
Thu Feb 12 22:22:47 2015 +0000
Revision:
0:75ec1b3cde17
Child:
1:ff019d22b275
Initial tests, LCD par and spi ok

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 0:75ec1b3cde17 7 #define USEFRAMEBUFFER
Geremia 0:75ec1b3cde17 8 //#define FRAMEBUFSIZE (LCDSIZE_X*LCDPAGES)
Geremia 0:75ec1b3cde17 9 Protocols* proto;
Geremia 0:75ec1b3cde17 10
Geremia 0:75ec1b3cde17 11 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 12 : /*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 13 {
Geremia 0:75ec1b3cde17 14 // LCDPAGES = LCDSIZE_Y>>3;
Geremia 0:75ec1b3cde17 15 // IC_PAGES = IC_Y_COMS>>3;
Geremia 0:75ec1b3cde17 16 // buffer = new unsigned char [LCDSIZE_X*LCDPAGES];
Geremia 0:75ec1b3cde17 17 // PAR8 par8proto(port, CS, reset, DC, WR, RD);
Geremia 0:75ec1b3cde17 18 if(displayproto==PAR_8) proto = new PAR8(port, CS, reset, DC, WR, RD);
Geremia 0:75ec1b3cde17 19 buffer = (unsigned char*) malloc (LCDSIZE_X*LCDPAGES);
Geremia 0:75ec1b3cde17 20 draw_mode = NORMAL;
Geremia 0:75ec1b3cde17 21 set_orientation(1);
Geremia 0:75ec1b3cde17 22 // cls();
Geremia 0:75ec1b3cde17 23 // locate(0,0);
Geremia 0:75ec1b3cde17 24 }
Geremia 0:75ec1b3cde17 25 LCD::LCD(proto_t displayproto,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 26 : 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 27 {
Geremia 0:75ec1b3cde17 28 // LCDPAGES = LCDSIZE_Y>>3;
Geremia 0:75ec1b3cde17 29 // IC_PAGES = IC_Y_COMS>>3;
Geremia 0:75ec1b3cde17 30 // buffer = new unsigned char [LCDSIZE_X*LCDPAGES];
Geremia 0:75ec1b3cde17 31 // PAR8 par8proto(port, CS, reset, DC, WR, RD);
Geremia 0:75ec1b3cde17 32 if(displayproto==SPI_8) proto = new SPI8(mosi, miso, sclk, CS, reset, DC);
Geremia 0:75ec1b3cde17 33 buffer = (unsigned char*) malloc (LCDSIZE_X*LCDPAGES);
Geremia 0:75ec1b3cde17 34 draw_mode = NORMAL;
Geremia 0:75ec1b3cde17 35 // cls();
Geremia 0:75ec1b3cde17 36 set_orientation(1);
Geremia 0:75ec1b3cde17 37 // locate(0,0);
Geremia 0:75ec1b3cde17 38 }
Geremia 0:75ec1b3cde17 39 LCD::~LCD()
Geremia 0:75ec1b3cde17 40 {
Geremia 0:75ec1b3cde17 41 free(buffer);
Geremia 0:75ec1b3cde17 42 }
Geremia 0:75ec1b3cde17 43
Geremia 0:75ec1b3cde17 44 void LCD::wr_cmd(unsigned char cmd)
Geremia 0:75ec1b3cde17 45 {
Geremia 0:75ec1b3cde17 46 proto->wr_cmd(cmd);
Geremia 0:75ec1b3cde17 47 }
Geremia 0:75ec1b3cde17 48 void LCD::wr_data8(unsigned char data8)
Geremia 0:75ec1b3cde17 49 {
Geremia 0:75ec1b3cde17 50 proto->wr_data8(data8);
Geremia 0:75ec1b3cde17 51 }
Geremia 0:75ec1b3cde17 52 void LCD::wr_data8(unsigned char data8, unsigned int count)
Geremia 0:75ec1b3cde17 53 {
Geremia 0:75ec1b3cde17 54 proto->wr_data8(data8, count);
Geremia 0:75ec1b3cde17 55 }
Geremia 0:75ec1b3cde17 56 void LCD::wr_data8buf(unsigned char* data8, unsigned int lenght)
Geremia 0:75ec1b3cde17 57 {
Geremia 0:75ec1b3cde17 58 proto->wr_data8buf(data8, lenght);
Geremia 0:75ec1b3cde17 59 }
Geremia 0:75ec1b3cde17 60 void LCD::hw_reset()
Geremia 0:75ec1b3cde17 61 {
Geremia 0:75ec1b3cde17 62 proto->hw_reset();
Geremia 0:75ec1b3cde17 63 }
Geremia 0:75ec1b3cde17 64 void LCD::BusEnable(bool enable)
Geremia 0:75ec1b3cde17 65 {
Geremia 0:75ec1b3cde17 66 proto->BusEnable(enable);
Geremia 0:75ec1b3cde17 67 }
Geremia 0:75ec1b3cde17 68
Geremia 0:75ec1b3cde17 69
Geremia 0:75ec1b3cde17 70
Geremia 0:75ec1b3cde17 71 // monochrome LCD driver ICs does not have ram rotate in hw (swap raw<->columns) like TFT displays
Geremia 0:75ec1b3cde17 72 // for portrait views, XY swap will be done in sw in pixel() function
Geremia 0:75ec1b3cde17 73 void LCD::set_orientation(int o)
Geremia 0:75ec1b3cde17 74 {
Geremia 0:75ec1b3cde17 75 orientation = o;
Geremia 0:75ec1b3cde17 76 switch (o) {
Geremia 0:75ec1b3cde17 77 case (0):// portrait view -90°
Geremia 0:75ec1b3cde17 78 mirrorXY(Y);
Geremia 0:75ec1b3cde17 79 col_offset = 0;
Geremia 0:75ec1b3cde17 80 page_offset = IC_PAGES-LCDPAGES;
Geremia 0:75ec1b3cde17 81 set_width(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 82 set_height(LCDSIZE_X);
Geremia 0:75ec1b3cde17 83 // portrait = true;
Geremia 0:75ec1b3cde17 84 break;
Geremia 0:75ec1b3cde17 85 case (1): // default, landscape view 0°
Geremia 0:75ec1b3cde17 86 mirrorXY(NONE);
Geremia 0:75ec1b3cde17 87 col_offset = 0;
Geremia 0:75ec1b3cde17 88 page_offset = 0;
Geremia 0:75ec1b3cde17 89 set_width(LCDSIZE_X);
Geremia 0:75ec1b3cde17 90 set_height(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 91 // portrait = false;
Geremia 0:75ec1b3cde17 92 break;
Geremia 0:75ec1b3cde17 93 case (2):// portrait view +90°
Geremia 0:75ec1b3cde17 94 mirrorXY(X);
Geremia 0:75ec1b3cde17 95 col_offset = IC_X_SEGS-LCDSIZE_X; // some displays have less pixels than IC ram
Geremia 0:75ec1b3cde17 96 page_offset = 0;
Geremia 0:75ec1b3cde17 97 set_width(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 98 set_height(LCDSIZE_X);
Geremia 0:75ec1b3cde17 99 // portrait = true;
Geremia 0:75ec1b3cde17 100 break;
Geremia 0:75ec1b3cde17 101 case (3):// landscape view +180°
Geremia 0:75ec1b3cde17 102 mirrorXY(XY);
Geremia 0:75ec1b3cde17 103 col_offset = IC_X_SEGS-LCDSIZE_X;
Geremia 0:75ec1b3cde17 104 page_offset = IC_PAGES-LCDPAGES;
Geremia 0:75ec1b3cde17 105 set_width(LCDSIZE_X);
Geremia 0:75ec1b3cde17 106 set_height(LCDSIZE_Y);
Geremia 0:75ec1b3cde17 107 // portrait = false;
Geremia 0:75ec1b3cde17 108 break;
Geremia 0:75ec1b3cde17 109 }
Geremia 0:75ec1b3cde17 110 }
Geremia 0:75ec1b3cde17 111 void LCD::mirrorXY(mirror_t mode)
Geremia 0:75ec1b3cde17 112 {
Geremia 0:75ec1b3cde17 113 switch (mode)
Geremia 0:75ec1b3cde17 114 {
Geremia 0:75ec1b3cde17 115 case(NONE):
Geremia 0:75ec1b3cde17 116 wr_cmd(0xA0);
Geremia 0:75ec1b3cde17 117 wr_cmd(0xC8); // 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 118 break;
Geremia 0:75ec1b3cde17 119 case(X):
Geremia 0:75ec1b3cde17 120 wr_cmd(0xA1);
Geremia 0:75ec1b3cde17 121 wr_cmd(0xC8);
Geremia 0:75ec1b3cde17 122 break;
Geremia 0:75ec1b3cde17 123 case(Y):
Geremia 0:75ec1b3cde17 124 wr_cmd(0xA0);
Geremia 0:75ec1b3cde17 125 wr_cmd(0xC0);
Geremia 0:75ec1b3cde17 126 break;
Geremia 0:75ec1b3cde17 127 case(XY):
Geremia 0:75ec1b3cde17 128 wr_cmd(0xA1);
Geremia 0:75ec1b3cde17 129 wr_cmd(0xC0);
Geremia 0:75ec1b3cde17 130 break;
Geremia 0:75ec1b3cde17 131 }
Geremia 0:75ec1b3cde17 132 }
Geremia 0:75ec1b3cde17 133 void LCD::invert(unsigned char o)
Geremia 0:75ec1b3cde17 134 {
Geremia 0:75ec1b3cde17 135 if(o == 0) wr_cmd(0xA6);
Geremia 0:75ec1b3cde17 136 else wr_cmd(0xA7);
Geremia 0:75ec1b3cde17 137 }
Geremia 0:75ec1b3cde17 138
Geremia 0:75ec1b3cde17 139 void LCD::set_contrast(int o)
Geremia 0:75ec1b3cde17 140 {
Geremia 0:75ec1b3cde17 141 contrast = o;
Geremia 0:75ec1b3cde17 142 wr_cmd(0x81); // set volume
Geremia 0:75ec1b3cde17 143 wr_cmd(o & 0x3F);
Geremia 0:75ec1b3cde17 144 }
Geremia 0:75ec1b3cde17 145 void LCD::set_auto_up(bool up)
Geremia 0:75ec1b3cde17 146 {
Geremia 0:75ec1b3cde17 147 if(up) auto_up = true;
Geremia 0:75ec1b3cde17 148 else auto_up = false;
Geremia 0:75ec1b3cde17 149 }
Geremia 0:75ec1b3cde17 150 bool LCD::get_auto_up(void)
Geremia 0:75ec1b3cde17 151 {
Geremia 0:75ec1b3cde17 152 return (auto_up);
Geremia 0:75ec1b3cde17 153 }
Geremia 0:75ec1b3cde17 154 int LCD::get_contrast(void)
Geremia 0:75ec1b3cde17 155 {
Geremia 0:75ec1b3cde17 156 return(contrast);
Geremia 0:75ec1b3cde17 157 }
Geremia 0:75ec1b3cde17 158 void LCD::window(int x, int y, int w, int h) {
Geremia 0:75ec1b3cde17 159 // current pixel location
Geremia 0:75ec1b3cde17 160 cur_x = x;
Geremia 0:75ec1b3cde17 161 cur_y = y;
Geremia 0:75ec1b3cde17 162 // window settings
Geremia 0:75ec1b3cde17 163 win_x1 = x;
Geremia 0:75ec1b3cde17 164 win_x2 = x + w - 1;
Geremia 0:75ec1b3cde17 165 win_y1 = y;
Geremia 0:75ec1b3cde17 166 win_y2 = y + h - 1;
Geremia 0:75ec1b3cde17 167 }
Geremia 0:75ec1b3cde17 168 void LCD::window_pushpixel(unsigned short color) {
Geremia 0:75ec1b3cde17 169 pixel(cur_x, cur_y, color);
Geremia 0:75ec1b3cde17 170 cur_x++;
Geremia 0:75ec1b3cde17 171 if(cur_x > win_x2) {
Geremia 0:75ec1b3cde17 172 cur_x = win_x1;
Geremia 0:75ec1b3cde17 173 cur_y++;
Geremia 0:75ec1b3cde17 174 if(cur_y > win_y2) {
Geremia 0:75ec1b3cde17 175 cur_y = win_y1;
Geremia 0:75ec1b3cde17 176 }
Geremia 0:75ec1b3cde17 177 }
Geremia 0:75ec1b3cde17 178 }
Geremia 0:75ec1b3cde17 179 void LCD::pixel(int x, int y, unsigned short color)
Geremia 0:75ec1b3cde17 180 {
Geremia 0:75ec1b3cde17 181 if(!(orientation&1)) SWAP(x,y);
Geremia 0:75ec1b3cde17 182 // first check parameter
Geremia 0:75ec1b3cde17 183 if((x >= LCDSIZE_X) || (y >= LCDSIZE_Y)) return;
Geremia 0:75ec1b3cde17 184
Geremia 0:75ec1b3cde17 185 // if(draw_mode == NORMAL)
Geremia 0:75ec1b3cde17 186 // {
Geremia 0:75ec1b3cde17 187 if(color == 0) buffer[x + ((y>>3) * LCDSIZE_X)] &= ~(1 << (y&7)); // erase pixel
Geremia 0:75ec1b3cde17 188 else buffer[x + ((y>>3) * LCDSIZE_X)] |= (1 << (y&7)); // set pixel
Geremia 0:75ec1b3cde17 189 // }
Geremia 0:75ec1b3cde17 190 // else
Geremia 0:75ec1b3cde17 191 // { // XOR mode
Geremia 0:75ec1b3cde17 192 // if(color == 1) buffer[x + ((y>>3) * LCDSIZE_X)] ^= (1 << (y&7)); // xor pixel
Geremia 0:75ec1b3cde17 193 // }
Geremia 0:75ec1b3cde17 194 }
Geremia 0:75ec1b3cde17 195 void LCD::copy_to_lcd(void)
Geremia 0:75ec1b3cde17 196 {
Geremia 0:75ec1b3cde17 197 unsigned short i=0;
Geremia 0:75ec1b3cde17 198 for(int page=0; page<LCDPAGES; page++)
Geremia 0:75ec1b3cde17 199 {
Geremia 0:75ec1b3cde17 200 wr_cmd((unsigned char)col_offset&0xF); // set column low nibble
Geremia 0:75ec1b3cde17 201 wr_cmd(0x10|(col_offset>>4)); // set column hi nibble
Geremia 0:75ec1b3cde17 202 wr_cmd(0xB0|(page+page_offset)); // set page
Geremia 0:75ec1b3cde17 203 wr_data8buf(buffer+i, LCDSIZE_X); // send whole page pixels
Geremia 0:75ec1b3cde17 204 i+=LCDSIZE_X;
Geremia 0:75ec1b3cde17 205 }
Geremia 0:75ec1b3cde17 206 }
Geremia 0:75ec1b3cde17 207 void LCD::cls(void)
Geremia 0:75ec1b3cde17 208 {
Geremia 0:75ec1b3cde17 209 memset(buffer,0x00,LCDSIZE_X*LCDPAGES); // clear display buffer
Geremia 0:75ec1b3cde17 210 for(int page=0; page<LCDPAGES; page++)
Geremia 0:75ec1b3cde17 211 {
Geremia 0:75ec1b3cde17 212 wr_cmd((unsigned char)col_offset&0xF); // set column low nibble
Geremia 0:75ec1b3cde17 213 wr_cmd(0x10|(col_offset>>4)); // set column hi nibble
Geremia 0:75ec1b3cde17 214 wr_cmd(0xB0|(page+page_offset)); // set page
Geremia 0:75ec1b3cde17 215 wr_data8(0, LCDSIZE_X); // send whole page pixels =0
Geremia 0:75ec1b3cde17 216 }
Geremia 0:75ec1b3cde17 217 }