SparkFun Electronics / 4DGL-uLCD-SE

Fork of the 4DGL-uLCD-SE library by Jim Hamblen.

Dependents:   ulcd_demo ulcd_accel internet_clock 4180_Final_Project ... more

Fork of 4DGL-uLCD-SE by jim hamblen

uLCD_4DGL_Graphics.cpp@3:9ba47197d94f, 2013-11-18 (annotated)

Committer:
4180_1
Date:
Mon Nov 18 03:05:40 2013 +0000
Revision:
3:9ba47197d94f
Parent:
1:8b656995301f
Child:
4:74df7fc26fef
ver 1.02

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 1:8b656995301f 1 //
4180_1 1:8b656995301f 2 // uLCD_4DGL is a class to drive 4D Systems TFT touch screens
4180_1 1:8b656995301f 3 //
4180_1 1:8b656995301f 4 // Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
4180_1 1:8b656995301f 5 //
4180_1 1:8b656995301f 6 // uLCD_4DGL is free software: you can redistribute it and/or modify
4180_1 1:8b656995301f 7 // it under the terms of the GNU General Public License as published by
4180_1 1:8b656995301f 8 // the Free Software Foundation, either version 3 of the License, or
4180_1 1:8b656995301f 9 // (at your option) any later version.
4180_1 1:8b656995301f 10 //
4180_1 1:8b656995301f 11 // uLCD_4DGL is distributed in the hope that it will be useful,
4180_1 1:8b656995301f 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
4180_1 1:8b656995301f 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4180_1 1:8b656995301f 14 // GNU General Public License for more details.
4180_1 1:8b656995301f 15 //
4180_1 1:8b656995301f 16 // You should have received a copy of the GNU General Public License
4180_1 1:8b656995301f 17 // along with uLCD_4DGL. If not, see <http://www.gnu.org/licenses/>.
4180_1 1:8b656995301f 18
4180_1 1:8b656995301f 19 #include "mbed.h"
4180_1 1:8b656995301f 20 #include "uLCD_4DGL.h"
4180_1 1:8b656995301f 21
4180_1 1:8b656995301f 22 #define ARRAY_SIZE(X) sizeof(X)/sizeof(X[0])
4180_1 1:8b656995301f 23
4180_1 1:8b656995301f 24 //****************************************************************************************************
4180_1 3:9ba47197d94f 25 void uLCD_4DGL :: circle(int x, int y , int radius, int color) // draw a circle in (x,y)
4180_1 3:9ba47197d94f 26 {
4180_1 1:8b656995301f 27 char command[9]= "";
4180_1 1:8b656995301f 28
4180_1 1:8b656995301f 29 command[0] = CIRCLE;
4180_1 1:8b656995301f 30
4180_1 1:8b656995301f 31 command[1] = (x >> 8) & 0xFF;
4180_1 1:8b656995301f 32 command[2] = x & 0xFF;
4180_1 1:8b656995301f 33
4180_1 1:8b656995301f 34 command[3] = (y >> 8) & 0xFF;
4180_1 1:8b656995301f 35 command[4] = y & 0xFF;
4180_1 1:8b656995301f 36
4180_1 1:8b656995301f 37 command[5] = (radius >> 8) & 0xFF;
4180_1 1:8b656995301f 38 command[6] = radius & 0xFF;
4180_1 1:8b656995301f 39
4180_1 1:8b656995301f 40 int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 1:8b656995301f 41 int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 1:8b656995301f 42 int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 1:8b656995301f 43
4180_1 1:8b656995301f 44 command[7] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
4180_1 1:8b656995301f 45 command[8] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
4180_1 1:8b656995301f 46
4180_1 1:8b656995301f 47 writeCOMMAND(command, 9);
4180_1 1:8b656995301f 48 }
4180_1 1:8b656995301f 49
4180_1 1:8b656995301f 50 //****************************************************************************************************
4180_1 3:9ba47197d94f 51 void uLCD_4DGL :: triangle(int x1, int y1 , int x2, int y2, int x3, int y3, int color) // draw a traingle
4180_1 3:9ba47197d94f 52 {
4180_1 1:8b656995301f 53 char command[15]= "";
4180_1 1:8b656995301f 54
4180_1 1:8b656995301f 55 command[0] = TRIANGLE;
4180_1 1:8b656995301f 56
4180_1 1:8b656995301f 57 command[1] = (x1 >> 8) & 0xFF;
4180_1 1:8b656995301f 58 command[2] = x1 & 0xFF;
4180_1 1:8b656995301f 59
4180_1 1:8b656995301f 60 command[3] = (y1 >> 8) & 0xFF;
4180_1 1:8b656995301f 61 command[4] = y1 & 0xFF;
4180_1 1:8b656995301f 62
4180_1 1:8b656995301f 63 command[5] = (x2 >> 8) & 0xFF;
4180_1 1:8b656995301f 64 command[6] = x2 & 0xFF;
4180_1 1:8b656995301f 65
4180_1 1:8b656995301f 66 command[7] = (y2 >> 8) & 0xFF;
4180_1 1:8b656995301f 67 command[8] = y2 & 0xFF;
4180_1 1:8b656995301f 68
4180_1 1:8b656995301f 69 command[9] = (x3 >> 8) & 0xFF;
4180_1 1:8b656995301f 70 command[10] = x3 & 0xFF;
4180_1 1:8b656995301f 71
4180_1 1:8b656995301f 72 command[11] = (y3 >> 8) & 0xFF;
4180_1 1:8b656995301f 73 command[12] = y3 & 0xFF;
4180_1 1:8b656995301f 74
4180_1 1:8b656995301f 75 int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 1:8b656995301f 76 int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 1:8b656995301f 77 int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 1:8b656995301f 78
4180_1 1:8b656995301f 79 command[13] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
4180_1 1:8b656995301f 80 command[14] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
4180_1 1:8b656995301f 81
4180_1 1:8b656995301f 82 writeCOMMAND(command, 15);
4180_1 1:8b656995301f 83 }
4180_1 1:8b656995301f 84
4180_1 1:8b656995301f 85 //****************************************************************************************************
4180_1 3:9ba47197d94f 86 void uLCD_4DGL :: line(int x1, int y1 , int x2, int y2, int color) // draw a line
4180_1 3:9ba47197d94f 87 {
4180_1 1:8b656995301f 88 char command[11]= "";
4180_1 1:8b656995301f 89
4180_1 1:8b656995301f 90 command[0] = LINE;
4180_1 1:8b656995301f 91
4180_1 1:8b656995301f 92 command[1] = (x1 >> 8) & 0xFF;
4180_1 1:8b656995301f 93 command[2] = x1 & 0xFF;
4180_1 1:8b656995301f 94
4180_1 1:8b656995301f 95 command[3] = (y1 >> 8) & 0xFF;
4180_1 1:8b656995301f 96 command[4] = y1 & 0xFF;
4180_1 1:8b656995301f 97
4180_1 1:8b656995301f 98 command[5] = (x2 >> 8) & 0xFF;
4180_1 1:8b656995301f 99 command[6] = x2 & 0xFF;
4180_1 1:8b656995301f 100
4180_1 1:8b656995301f 101 command[7] = (y2 >> 8) & 0xFF;
4180_1 1:8b656995301f 102 command[8] = y2 & 0xFF;
4180_1 1:8b656995301f 103
4180_1 1:8b656995301f 104 int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 1:8b656995301f 105 int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 1:8b656995301f 106 int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 1:8b656995301f 107
4180_1 1:8b656995301f 108 command[9] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
4180_1 1:8b656995301f 109 command[10] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
4180_1 1:8b656995301f 110
4180_1 1:8b656995301f 111 writeCOMMAND(command, 11);
4180_1 1:8b656995301f 112 }
4180_1 1:8b656995301f 113
4180_1 1:8b656995301f 114 //****************************************************************************************************
4180_1 3:9ba47197d94f 115 void uLCD_4DGL :: rectangle(int x1, int y1 , int x2, int y2, int color) // draw a rectangle
4180_1 3:9ba47197d94f 116 {
4180_1 1:8b656995301f 117 char command[11]= "";
4180_1 1:8b656995301f 118
4180_1 1:8b656995301f 119 command[0] = RECTANGLE;
4180_1 1:8b656995301f 120
4180_1 1:8b656995301f 121 command[1] = (x1 >> 8) & 0xFF;
4180_1 1:8b656995301f 122 command[2] = x1 & 0xFF;
4180_1 1:8b656995301f 123
4180_1 1:8b656995301f 124 command[3] = (y1 >> 8) & 0xFF;
4180_1 1:8b656995301f 125 command[4] = y1 & 0xFF;
4180_1 1:8b656995301f 126
4180_1 1:8b656995301f 127 command[5] = (x2 >> 8) & 0xFF;
4180_1 1:8b656995301f 128 command[6] = x2 & 0xFF;
4180_1 1:8b656995301f 129
4180_1 1:8b656995301f 130 command[7] = (y2 >> 8) & 0xFF;
4180_1 1:8b656995301f 131 command[8] = y2 & 0xFF;
4180_1 1:8b656995301f 132
4180_1 1:8b656995301f 133 int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 1:8b656995301f 134 int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 1:8b656995301f 135 int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 1:8b656995301f 136
4180_1 1:8b656995301f 137 command[9] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
4180_1 1:8b656995301f 138 command[10] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
4180_1 1:8b656995301f 139
4180_1 1:8b656995301f 140 writeCOMMAND(command, 11);
4180_1 1:8b656995301f 141 }
4180_1 1:8b656995301f 142
4180_1 1:8b656995301f 143 //****************************************************************************************************
4180_1 3:9ba47197d94f 144 void uLCD_4DGL :: ellipse(int x, int y , int radius_x, int radius_y, int color) // draw an ellipse
4180_1 3:9ba47197d94f 145 {
4180_1 1:8b656995301f 146 char command[11]= "";
4180_1 1:8b656995301f 147
4180_1 1:8b656995301f 148 command[0] = ELLIPSE;
4180_1 1:8b656995301f 149
4180_1 1:8b656995301f 150 command[1] = (x >> 8) & 0xFF;
4180_1 1:8b656995301f 151 command[2] = x & 0xFF;
4180_1 1:8b656995301f 152
4180_1 1:8b656995301f 153 command[3] = (y >> 8) & 0xFF;
4180_1 1:8b656995301f 154 command[4] = y & 0xFF;
4180_1 1:8b656995301f 155
4180_1 1:8b656995301f 156 command[5] = (radius_x >> 8) & 0xFF;
4180_1 1:8b656995301f 157 command[6] = radius_x & 0xFF;
4180_1 1:8b656995301f 158
4180_1 1:8b656995301f 159 command[7] = (radius_y >> 8) & 0xFF;
4180_1 1:8b656995301f 160 command[8] = radius_y & 0xFF;
4180_1 1:8b656995301f 161
4180_1 1:8b656995301f 162 int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 1:8b656995301f 163 int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 1:8b656995301f 164 int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 1:8b656995301f 165
4180_1 1:8b656995301f 166 command[9] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
4180_1 1:8b656995301f 167 command[10] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
4180_1 1:8b656995301f 168
4180_1 1:8b656995301f 169 writeCOMMAND(command, 11);
4180_1 1:8b656995301f 170 }
4180_1 1:8b656995301f 171
4180_1 1:8b656995301f 172 //****************************************************************************************************
4180_1 3:9ba47197d94f 173 void uLCD_4DGL :: pixel(int x, int y, int color) // draw a pixel
4180_1 3:9ba47197d94f 174 {
4180_1 1:8b656995301f 175 char command[7]= "";
4180_1 1:8b656995301f 176
4180_1 1:8b656995301f 177 command[0] = PIXEL;
4180_1 1:8b656995301f 178
4180_1 1:8b656995301f 179 command[1] = (x >> 8) & 0xFF;
4180_1 1:8b656995301f 180 command[2] = x & 0xFF;
4180_1 1:8b656995301f 181
4180_1 1:8b656995301f 182 command[3] = (y >> 8) & 0xFF;
4180_1 1:8b656995301f 183 command[4] = y & 0xFF;
4180_1 1:8b656995301f 184
4180_1 1:8b656995301f 185 int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 1:8b656995301f 186 int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 1:8b656995301f 187 int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 1:8b656995301f 188
4180_1 1:8b656995301f 189 command[5] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
4180_1 1:8b656995301f 190 command[6] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
4180_1 1:8b656995301f 191
4180_1 1:8b656995301f 192 writeCOMMAND(command, 7);
4180_1 1:8b656995301f 193 }
4180_1 3:9ba47197d94f 194 //****************************************************************************************************
4180_1 3:9ba47197d94f 195 void uLCD_4DGL :: BLIT(int x, int y, int w, int h, int *colors) // draw a block of pixels
4180_1 3:9ba47197d94f 196 {
4180_1 3:9ba47197d94f 197 int red5, green6, blue5;
4180_1 3:9ba47197d94f 198 writeBYTE('\x00');
4180_1 3:9ba47197d94f 199 writeBYTE(BLITCOM);
4180_1 3:9ba47197d94f 200 writeBYTE((x >> 8) & 0xFF);
4180_1 3:9ba47197d94f 201 writeBYTE(x & 0xFF);
4180_1 3:9ba47197d94f 202 writeBYTE((y >> 8) & 0xFF);
4180_1 3:9ba47197d94f 203 writeBYTE(y & 0xFF);
4180_1 3:9ba47197d94f 204 writeBYTE((w >> 8) & 0xFF);
4180_1 3:9ba47197d94f 205 writeBYTE(w & 0xFF);
4180_1 3:9ba47197d94f 206 writeBYTE((h >> 8) & 0xFF);
4180_1 3:9ba47197d94f 207 writeBYTE(h & 0xFF);
4180_1 3:9ba47197d94f 208 for (int i=0; i<w*h; i++) {
4180_1 3:9ba47197d94f 209 red5 = (colors[i] >> (16 + 3)) & 0x1F; // get red on 5 bits
4180_1 3:9ba47197d94f 210 green6 = (colors[i] >> (8 + 2)) & 0x3F; // get green on 6 bits
4180_1 3:9ba47197d94f 211 blue5 = (colors[i] >> (0 + 3)) & 0x1F; // get blue on 5 bits
4180_1 3:9ba47197d94f 212 writeBYTE(((red5 << 3) + (green6 >> 3)) & 0xFF); // first part of 16 bits color
4180_1 3:9ba47197d94f 213 writeBYTE(((green6 << 5) + (blue5 >> 0)) & 0xFF); // second part of 16 bits color
4180_1 3:9ba47197d94f 214 }
4180_1 3:9ba47197d94f 215 int resp=0;
4180_1 3:9ba47197d94f 216 while (!_cmd.readable()) wait_ms(TEMPO); // wait for screen answer
4180_1 3:9ba47197d94f 217 if (_cmd.readable()) resp = _cmd.getc(); // read response if any
4180_1 3:9ba47197d94f 218 switch (resp) {
4180_1 3:9ba47197d94f 219 case ACK : // if OK return 1
4180_1 3:9ba47197d94f 220 resp = 1;
4180_1 3:9ba47197d94f 221 break;
4180_1 3:9ba47197d94f 222 case NAK : // if NOK return -1
4180_1 3:9ba47197d94f 223 resp = -1;
4180_1 3:9ba47197d94f 224 break;
4180_1 3:9ba47197d94f 225 default :
4180_1 3:9ba47197d94f 226 resp = 0; // else return 0
4180_1 3:9ba47197d94f 227 break;
4180_1 3:9ba47197d94f 228 }
4180_1 3:9ba47197d94f 229 #if DEBUGMODE
4180_1 3:9ba47197d94f 230 pc.printf(" Answer received : %d\n",resp);
4180_1 3:9ba47197d94f 231 #endif
4180_1 1:8b656995301f 232
4180_1 3:9ba47197d94f 233 }
4180_1 1:8b656995301f 234 //******************************************************************************************************
4180_1 3:9ba47197d94f 235 int uLCD_4DGL :: read_pixel(int x, int y) // read screen info and populate data
4180_1 3:9ba47197d94f 236 {
4180_1 1:8b656995301f 237
4180_1 1:8b656995301f 238 char command[6]= "";
4180_1 1:8b656995301f 239 command[0] = 0xFF;
4180_1 1:8b656995301f 240 command[1] = READPIXEL;
4180_1 1:8b656995301f 241
4180_1 1:8b656995301f 242 command[2] = (x >> 8) & 0xFF;
4180_1 1:8b656995301f 243 command[3] = x & 0xFF;
4180_1 1:8b656995301f 244
4180_1 1:8b656995301f 245 command[4] = (y >> 8) & 0xFF;
4180_1 1:8b656995301f 246 command[5] = y & 0xFF;
4180_1 1:8b656995301f 247
4180_1 1:8b656995301f 248 int i, temp = 0, color = 0, resp = 0;
4180_1 1:8b656995301f 249 char response[2] = "";
4180_1 1:8b656995301f 250
4180_1 1:8b656995301f 251 freeBUFFER();
4180_1 1:8b656995301f 252
4180_1 1:8b656995301f 253 for (i = 0; i < 6; i++) { // send all chars to serial port
4180_1 1:8b656995301f 254 writeBYTE(command[i]);
4180_1 1:8b656995301f 255 }
4180_1 1:8b656995301f 256
4180_1 1:8b656995301f 257 while (!_cmd.readable()) wait_ms(TEMPO); // wait for screen answer
4180_1 1:8b656995301f 258
4180_1 1:8b656995301f 259 while (_cmd.readable() && resp < ARRAY_SIZE(response)) {
4180_1 1:8b656995301f 260 temp = _cmd.getc();
4180_1 1:8b656995301f 261 response[resp++] = (char)temp;
4180_1 1:8b656995301f 262 }
4180_1 1:8b656995301f 263
4180_1 1:8b656995301f 264 color = ((response[0] << 8) + response[1]);
4180_1 1:8b656995301f 265
4180_1 1:8b656995301f 266 return color; // WARNING : this is 16bits color, not 24bits... need to be fixed
4180_1 1:8b656995301f 267 }
4180_1 1:8b656995301f 268
4180_1 1:8b656995301f 269 //******************************************************************************************************
4180_1 3:9ba47197d94f 270 void uLCD_4DGL :: screen_copy(int xs, int ys , int xd, int yd , int width, int height)
4180_1 3:9ba47197d94f 271 {
4180_1 1:8b656995301f 272
4180_1 1:8b656995301f 273 char command[13]= "";
4180_1 1:8b656995301f 274
4180_1 1:8b656995301f 275 command[0] = SCREENCOPY;
4180_1 1:8b656995301f 276
4180_1 1:8b656995301f 277 command[1] = (xs >> 8) & 0xFF;
4180_1 1:8b656995301f 278 command[2] = xs & 0xFF;
4180_1 1:8b656995301f 279
4180_1 1:8b656995301f 280 command[3] = (ys >> 8) & 0xFF;
4180_1 1:8b656995301f 281 command[4] = ys & 0xFF;
4180_1 1:8b656995301f 282
4180_1 1:8b656995301f 283 command[5] = (xd >> 8) & 0xFF;
4180_1 1:8b656995301f 284 command[6] = xd & 0xFF;
4180_1 1:8b656995301f 285
4180_1 1:8b656995301f 286 command[7] = (yd >> 8) & 0xFF;
4180_1 1:8b656995301f 287 command[8] = yd & 0xFF;
4180_1 1:8b656995301f 288
4180_1 1:8b656995301f 289 command[9] = (width >> 8) & 0xFF;
4180_1 1:8b656995301f 290 command[10] = width & 0xFF;
4180_1 1:8b656995301f 291
4180_1 1:8b656995301f 292 command[11] = (height >> 8) & 0xFF;
4180_1 1:8b656995301f 293 command[12] = height & 0xFF;
4180_1 1:8b656995301f 294
4180_1 1:8b656995301f 295 writeCOMMAND(command, 13);
4180_1 1:8b656995301f 296 }
4180_1 1:8b656995301f 297
4180_1 1:8b656995301f 298 //****************************************************************************************************
4180_1 3:9ba47197d94f 299 void uLCD_4DGL :: pen_size(char mode) // set pen to SOLID or WIREFRAME
4180_1 3:9ba47197d94f 300 {
4180_1 1:8b656995301f 301 char command[2]= "";
4180_1 1:8b656995301f 302
4180_1 1:8b656995301f 303 command[0] = PENSIZE;
4180_1 1:8b656995301f 304 command[1] = mode;
4180_1 1:8b656995301f 305
4180_1 1:8b656995301f 306 writeCOMMAND(command, 2);
4180_1 1:8b656995301f 307 }