Tim Dennis / C12832_lcd2

Lib for the LCD display on mbed lab Board

C12832_lcd.cpp@1:66dd8afbfd06, 2012-10-16 (annotated)

Committer:
dreschpe
Date:
Tue Oct 16 17:50:37 2012 +0000
Revision:
1:66dd8afbfd06
Parent:
0:4bbc531be6e2
Child:
2:bdc53502af17
add get_contrast to read contrast setting

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 0:4bbc531be6e2 1 /* mbed library for the mbed Lab Board 128*32 pixel LCD
dreschpe 0:4bbc531be6e2 2 * use C12832 controller
dreschpe 0:4bbc531be6e2 3 * Copyright (c) 2012 Peter Drescher - DC2PD
dreschpe 0:4bbc531be6e2 4 * Released under the MIT License: http://mbed.org/license/mit
dreschpe 0:4bbc531be6e2 5 *
dreschpe 0:4bbc531be6e2 6 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dreschpe 0:4bbc531be6e2 7 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dreschpe 0:4bbc531be6e2 8 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dreschpe 0:4bbc531be6e2 9 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dreschpe 0:4bbc531be6e2 10 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dreschpe 0:4bbc531be6e2 11 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
dreschpe 0:4bbc531be6e2 12 * THE SOFTWARE.
dreschpe 0:4bbc531be6e2 13 */
dreschpe 0:4bbc531be6e2 14
dreschpe 0:4bbc531be6e2 15 // 13.10.12 initial design
dreschpe 0:4bbc531be6e2 16 // optional defines :
dreschpe 0:4bbc531be6e2 17 #define debug_lcd 1
dreschpe 0:4bbc531be6e2 18
dreschpe 0:4bbc531be6e2 19 #include "C12832_lcd.h"
dreschpe 0:4bbc531be6e2 20 #include "mbed.h"
dreschpe 0:4bbc531be6e2 21 #include "stdio.h"
dreschpe 0:4bbc531be6e2 22
dreschpe 0:4bbc531be6e2 23 #define BPP 1 // Bits per pixel
dreschpe 0:4bbc531be6e2 24
dreschpe 0:4bbc531be6e2 25 C12832_LCD::C12832_LCD(const char* name)
dreschpe 0:4bbc531be6e2 26 : _spi(p5,NC,p7),_reset(p6),_A0(p8),_CS(p11),GraphicsDisplay(name)
dreschpe 0:4bbc531be6e2 27 {
dreschpe 0:4bbc531be6e2 28 orientation = 1;
dreschpe 0:4bbc531be6e2 29 draw_mode = NORMAL;
dreschpe 0:4bbc531be6e2 30 char_x = 0;
dreschpe 0:4bbc531be6e2 31 lcd_reset();
dreschpe 0:4bbc531be6e2 32 }
dreschpe 0:4bbc531be6e2 33
dreschpe 0:4bbc531be6e2 34 int C12832_LCD::width()
dreschpe 0:4bbc531be6e2 35 {
dreschpe 0:4bbc531be6e2 36 if (orientation == 0 || orientation == 2) return 32;
dreschpe 0:4bbc531be6e2 37 else return 128;
dreschpe 0:4bbc531be6e2 38 }
dreschpe 0:4bbc531be6e2 39
dreschpe 0:4bbc531be6e2 40 int C12832_LCD::height()
dreschpe 0:4bbc531be6e2 41 {
dreschpe 0:4bbc531be6e2 42 if (orientation == 0 || orientation == 2) return 128;
dreschpe 0:4bbc531be6e2 43 else return 32;
dreschpe 0:4bbc531be6e2 44 }
dreschpe 0:4bbc531be6e2 45
dreschpe 0:4bbc531be6e2 46
dreschpe 1:66dd8afbfd06 47 /*void C12832_LCD::set_orientation(unsigned int o)
dreschpe 0:4bbc531be6e2 48 {
dreschpe 0:4bbc531be6e2 49 orientation = o;
dreschpe 0:4bbc531be6e2 50 switch (o) {
dreschpe 0:4bbc531be6e2 51 case (0):
dreschpe 0:4bbc531be6e2 52 wr_cmd(0xA0);
dreschpe 0:4bbc531be6e2 53 wr_cmd(0xC0);
dreschpe 0:4bbc531be6e2 54 break;
dreschpe 0:4bbc531be6e2 55 case (1):
dreschpe 0:4bbc531be6e2 56 wr_cmd(0xA0);
dreschpe 0:4bbc531be6e2 57 wr_cmd(0xC8);
dreschpe 0:4bbc531be6e2 58 break;
dreschpe 0:4bbc531be6e2 59 case (2):
dreschpe 0:4bbc531be6e2 60 wr_cmd(0xA1);
dreschpe 0:4bbc531be6e2 61 wr_cmd(0xC8);
dreschpe 0:4bbc531be6e2 62 break;
dreschpe 0:4bbc531be6e2 63 case (3):
dreschpe 0:4bbc531be6e2 64 wr_cmd(0xA1);
dreschpe 0:4bbc531be6e2 65 wr_cmd(0xC0);
dreschpe 0:4bbc531be6e2 66 break;
dreschpe 0:4bbc531be6e2 67 }
dreschpe 0:4bbc531be6e2 68 }
dreschpe 0:4bbc531be6e2 69
dreschpe 1:66dd8afbfd06 70 */
dreschpe 1:66dd8afbfd06 71
dreschpe 0:4bbc531be6e2 72 void C12832_LCD::invert(unsigned int o)
dreschpe 0:4bbc531be6e2 73 {
dreschpe 0:4bbc531be6e2 74 if(o == 0) wr_cmd(0xA6);
dreschpe 0:4bbc531be6e2 75 else wr_cmd(0xA7);
dreschpe 0:4bbc531be6e2 76 }
dreschpe 0:4bbc531be6e2 77
dreschpe 0:4bbc531be6e2 78
dreschpe 0:4bbc531be6e2 79 void C12832_LCD::set_contrast(unsigned int o)
dreschpe 0:4bbc531be6e2 80 {
dreschpe 1:66dd8afbfd06 81 contrast = o;
dreschpe 0:4bbc531be6e2 82 wr_cmd(0x81); // set volume
dreschpe 0:4bbc531be6e2 83 wr_cmd(o & 0x2F);
dreschpe 0:4bbc531be6e2 84 }
dreschpe 0:4bbc531be6e2 85
dreschpe 1:66dd8afbfd06 86 unsigned int C12832_LCD::get_contrast(void)
dreschpe 1:66dd8afbfd06 87 {
dreschpe 1:66dd8afbfd06 88 return(contrast);
dreschpe 1:66dd8afbfd06 89 }
dreschpe 1:66dd8afbfd06 90
dreschpe 0:4bbc531be6e2 91
dreschpe 0:4bbc531be6e2 92 // write command to lcd controller
dreschpe 0:4bbc531be6e2 93
dreschpe 0:4bbc531be6e2 94 void C12832_LCD::wr_cmd(unsigned char cmd)
dreschpe 0:4bbc531be6e2 95 {
dreschpe 0:4bbc531be6e2 96 _A0 = 0;
dreschpe 0:4bbc531be6e2 97 _CS = 0;
dreschpe 0:4bbc531be6e2 98 LPC_SSP1->DR = cmd;
dreschpe 0:4bbc531be6e2 99 do {
dreschpe 0:4bbc531be6e2 100 } while ((LPC_SSP1->SR & 0x10) == 0x10); // wait for SPI1 idle
dreschpe 0:4bbc531be6e2 101 _CS = 1;
dreschpe 0:4bbc531be6e2 102 }
dreschpe 0:4bbc531be6e2 103
dreschpe 0:4bbc531be6e2 104 // write data to lcd controller
dreschpe 0:4bbc531be6e2 105
dreschpe 0:4bbc531be6e2 106 void C12832_LCD::wr_dat(unsigned char dat)
dreschpe 0:4bbc531be6e2 107 {
dreschpe 0:4bbc531be6e2 108 _A0 = 1;
dreschpe 0:4bbc531be6e2 109 _CS = 0;
dreschpe 0:4bbc531be6e2 110 LPC_SSP1->DR = dat;
dreschpe 0:4bbc531be6e2 111 do {
dreschpe 0:4bbc531be6e2 112 } while ((LPC_SSP1->SR & 0x10) == 0x10); // wait for SPI1 idle
dreschpe 0:4bbc531be6e2 113 _CS = 1;
dreschpe 0:4bbc531be6e2 114 }
dreschpe 0:4bbc531be6e2 115
dreschpe 0:4bbc531be6e2 116 // reset and init the lcd controller
dreschpe 0:4bbc531be6e2 117
dreschpe 0:4bbc531be6e2 118 void C12832_LCD::lcd_reset()
dreschpe 0:4bbc531be6e2 119 {
dreschpe 0:4bbc531be6e2 120
dreschpe 0:4bbc531be6e2 121 _spi.format(8,3); // 8 bit spi mode 3
dreschpe 0:4bbc531be6e2 122 _spi.frequency(20000000); // 19,2 Mhz SPI clock
dreschpe 0:4bbc531be6e2 123 DigitalOut _reset(p6);
dreschpe 0:4bbc531be6e2 124 _A0 = 0;
dreschpe 0:4bbc531be6e2 125 _CS = 1;
dreschpe 0:4bbc531be6e2 126 _reset = 0; // display reset
dreschpe 0:4bbc531be6e2 127 wait_us(50);
dreschpe 0:4bbc531be6e2 128 _reset = 1; // end reset
dreschpe 0:4bbc531be6e2 129 wait_ms(5);
dreschpe 0:4bbc531be6e2 130
dreschpe 0:4bbc531be6e2 131 /* Start Initial Sequence ----------------------------------------------------*/
dreschpe 0:4bbc531be6e2 132
dreschpe 0:4bbc531be6e2 133 wr_cmd(0xAE); // display off
dreschpe 0:4bbc531be6e2 134 wr_cmd(0xA2); // bias voltage
dreschpe 0:4bbc531be6e2 135
dreschpe 0:4bbc531be6e2 136 wr_cmd(0xA0);
dreschpe 0:4bbc531be6e2 137 wr_cmd(0xC8); // colum normal
dreschpe 0:4bbc531be6e2 138
dreschpe 0:4bbc531be6e2 139 wr_cmd(0x22); // voltage resistor ratio
dreschpe 0:4bbc531be6e2 140 wr_cmd(0x2F); // power on
dreschpe 1:66dd8afbfd06 141 //wr_cmd(0xA4); // LCD display ram
dreschpe 0:4bbc531be6e2 142 wr_cmd(0x40); // start line = 0
dreschpe 0:4bbc531be6e2 143 wr_cmd(0xAF); // display ON
dreschpe 0:4bbc531be6e2 144
dreschpe 0:4bbc531be6e2 145 wr_cmd(0x81); // set contrast
dreschpe 0:4bbc531be6e2 146 wr_cmd(0x17); // set contrast
dreschpe 0:4bbc531be6e2 147
dreschpe 0:4bbc531be6e2 148 wr_cmd(0xA6); // display normal
dreschpe 0:4bbc531be6e2 149
dreschpe 0:4bbc531be6e2 150 //setup DMA channel 0
dreschpe 0:4bbc531be6e2 151 LPC_SC->PCONP |= (1UL << 29); // Power up the GPDMA
dreschpe 0:4bbc531be6e2 152 LPC_GPDMA->DMACConfig = 1; // enable DMA controller
dreschpe 0:4bbc531be6e2 153 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 0:4bbc531be6e2 154 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 0:4bbc531be6e2 155 LPC_GPDMACH0->DMACCLLI = 0;
dreschpe 0:4bbc531be6e2 156 // clear and update LCD
dreschpe 0:4bbc531be6e2 157 memset(buffer,0x00,512); // clear display buffer
dreschpe 0:4bbc531be6e2 158 copy_to_lcd();
dreschpe 0:4bbc531be6e2 159 }
dreschpe 0:4bbc531be6e2 160
dreschpe 0:4bbc531be6e2 161 // set one pixel in buffer
dreschpe 0:4bbc531be6e2 162
dreschpe 0:4bbc531be6e2 163 void C12832_LCD::pixel(int x, int y, int color)
dreschpe 0:4bbc531be6e2 164 {
dreschpe 0:4bbc531be6e2 165 // first check parameter
dreschpe 0:4bbc531be6e2 166 if(x > 128 || y > 32 || x < 0 || y < 0) return;
dreschpe 0:4bbc531be6e2 167
dreschpe 0:4bbc531be6e2 168 if(draw_mode == NORMAL) {
dreschpe 0:4bbc531be6e2 169 if(color == 0)
dreschpe 0:4bbc531be6e2 170 buffer[x + ((y/8) * 128)] &= ~(1 << (y%8)); // erase pixel
dreschpe 0:4bbc531be6e2 171 else
dreschpe 0:4bbc531be6e2 172 buffer[x + ((y/8) * 128)] |= (1 << (y%8)); // set pixel
dreschpe 0:4bbc531be6e2 173 } else { // XOR mode
dreschpe 0:4bbc531be6e2 174 if(color == 1)
dreschpe 0:4bbc531be6e2 175 buffer[x + ((y/8) * 128)] ^= (1 << (y%8)); // xor pixel
dreschpe 0:4bbc531be6e2 176 }
dreschpe 0:4bbc531be6e2 177 }
dreschpe 0:4bbc531be6e2 178
dreschpe 0:4bbc531be6e2 179 // update lcd
dreschpe 0:4bbc531be6e2 180
dreschpe 0:4bbc531be6e2 181 void C12832_LCD::copy_to_lcd(void)
dreschpe 0:4bbc531be6e2 182 {
dreschpe 0:4bbc531be6e2 183 //page 0
dreschpe 0:4bbc531be6e2 184 wr_cmd(0x00); // set column low nibble 0
dreschpe 0:4bbc531be6e2 185 wr_cmd(0x10); // set column hi nibble 0
dreschpe 0:4bbc531be6e2 186 wr_cmd(0xB0); // set page address 0
dreschpe 0:4bbc531be6e2 187 _CS = 0;
dreschpe 0:4bbc531be6e2 188 _A0 = 1;
dreschpe 0:4bbc531be6e2 189 // start 128 byte DMA transfer to SPI1
dreschpe 0:4bbc531be6e2 190 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
dreschpe 0:4bbc531be6e2 191 LPC_SSP1->DMACR = 0x2; // Enable SSP1 for DMA.
dreschpe 0:4bbc531be6e2 192 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 0:4bbc531be6e2 193 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 0:4bbc531be6e2 194 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer);
dreschpe 0:4bbc531be6e2 195 LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt
dreschpe 0:4bbc531be6e2 196 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX;
dreschpe 0:4bbc531be6e2 197 LPC_GPDMA->DMACSoftSReq = 0x1;
dreschpe 0:4bbc531be6e2 198 do {
dreschpe 0:4bbc531be6e2 199 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running
dreschpe 0:4bbc531be6e2 200 do {
dreschpe 0:4bbc531be6e2 201 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle
dreschpe 0:4bbc531be6e2 202 _CS = 1;
dreschpe 0:4bbc531be6e2 203
dreschpe 0:4bbc531be6e2 204 // page 1
dreschpe 0:4bbc531be6e2 205 wr_cmd(0x00); // set column low nibble 0
dreschpe 0:4bbc531be6e2 206 wr_cmd(0x10); // set column hi nibble 0
dreschpe 0:4bbc531be6e2 207 wr_cmd(0xB1); // set page address 1
dreschpe 0:4bbc531be6e2 208 _CS = 0;
dreschpe 0:4bbc531be6e2 209 _A0 = 1;
dreschpe 0:4bbc531be6e2 210 // start 128 byte DMA transfer to SPI1
dreschpe 0:4bbc531be6e2 211 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 0:4bbc531be6e2 212 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 0:4bbc531be6e2 213 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + 128);
dreschpe 0:4bbc531be6e2 214 LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt
dreschpe 0:4bbc531be6e2 215 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX;
dreschpe 0:4bbc531be6e2 216 LPC_GPDMA->DMACSoftSReq = 0x1;
dreschpe 0:4bbc531be6e2 217 do {
dreschpe 0:4bbc531be6e2 218 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running
dreschpe 0:4bbc531be6e2 219 do {
dreschpe 0:4bbc531be6e2 220 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle
dreschpe 0:4bbc531be6e2 221 _CS = 1;
dreschpe 0:4bbc531be6e2 222
dreschpe 0:4bbc531be6e2 223 //page 2
dreschpe 0:4bbc531be6e2 224 wr_cmd(0x00); // set column low nibble 0
dreschpe 0:4bbc531be6e2 225 wr_cmd(0x10); // set column hi nibble 0
dreschpe 0:4bbc531be6e2 226 wr_cmd(0xB2); // set page address 2
dreschpe 0:4bbc531be6e2 227 _CS = 0;
dreschpe 0:4bbc531be6e2 228 _A0 = 1;
dreschpe 0:4bbc531be6e2 229 // start 128 byte DMA transfer to SPI1
dreschpe 0:4bbc531be6e2 230 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 0:4bbc531be6e2 231 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 0:4bbc531be6e2 232 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + 256);
dreschpe 0:4bbc531be6e2 233 LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt
dreschpe 0:4bbc531be6e2 234 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX ;
dreschpe 0:4bbc531be6e2 235 LPC_GPDMA->DMACSoftSReq = 0x1;
dreschpe 0:4bbc531be6e2 236 do {
dreschpe 0:4bbc531be6e2 237 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running
dreschpe 0:4bbc531be6e2 238 do {
dreschpe 0:4bbc531be6e2 239 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle
dreschpe 0:4bbc531be6e2 240 _CS = 1;
dreschpe 0:4bbc531be6e2 241
dreschpe 0:4bbc531be6e2 242 //page 3
dreschpe 0:4bbc531be6e2 243 wr_cmd(0x00); // set column low nibble 0
dreschpe 0:4bbc531be6e2 244 wr_cmd(0x10); // set column hi nibble 0
dreschpe 0:4bbc531be6e2 245 wr_cmd(0xB3); // set page address 3
dreschpe 0:4bbc531be6e2 246 _CS = 0;
dreschpe 0:4bbc531be6e2 247 _A0 = 1;
dreschpe 0:4bbc531be6e2 248 // start 128 byte DMA transfer to SPI1
dreschpe 0:4bbc531be6e2 249 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 0:4bbc531be6e2 250 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 0:4bbc531be6e2 251 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + 384);
dreschpe 0:4bbc531be6e2 252 LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt
dreschpe 0:4bbc531be6e2 253 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX;
dreschpe 0:4bbc531be6e2 254 LPC_GPDMA->DMACSoftSReq = 0x1;
dreschpe 0:4bbc531be6e2 255 do {
dreschpe 0:4bbc531be6e2 256 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running
dreschpe 0:4bbc531be6e2 257 do {
dreschpe 0:4bbc531be6e2 258 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle
dreschpe 0:4bbc531be6e2 259 _CS = 1;
dreschpe 0:4bbc531be6e2 260 }
dreschpe 0:4bbc531be6e2 261
dreschpe 0:4bbc531be6e2 262 void C12832_LCD::cls(void)
dreschpe 0:4bbc531be6e2 263 {
dreschpe 0:4bbc531be6e2 264 memset(buffer,0x00,512); // clear display buffer
dreschpe 0:4bbc531be6e2 265 copy_to_lcd();
dreschpe 0:4bbc531be6e2 266 }
dreschpe 0:4bbc531be6e2 267
dreschpe 0:4bbc531be6e2 268
dreschpe 0:4bbc531be6e2 269 void C12832_LCD::line(int x0, int y0, int x1, int y1, int color)
dreschpe 0:4bbc531be6e2 270 {
dreschpe 0:4bbc531be6e2 271 int dx = 0, dy = 0;
dreschpe 0:4bbc531be6e2 272 int dx_sym = 0, dy_sym = 0;
dreschpe 0:4bbc531be6e2 273 int dx_x2 = 0, dy_x2 = 0;
dreschpe 0:4bbc531be6e2 274 int di = 0;
dreschpe 0:4bbc531be6e2 275
dreschpe 0:4bbc531be6e2 276 dx = x1-x0;
dreschpe 0:4bbc531be6e2 277 dy = y1-y0;
dreschpe 0:4bbc531be6e2 278
dreschpe 0:4bbc531be6e2 279 // if (dx == 0) { /* vertical line */
dreschpe 0:4bbc531be6e2 280 // if (y1 > y0) vline(x0,y0,y1,color);
dreschpe 0:4bbc531be6e2 281 // else vline(x0,y1,y0,color);
dreschpe 0:4bbc531be6e2 282 // return;
dreschpe 0:4bbc531be6e2 283 // }
dreschpe 0:4bbc531be6e2 284
dreschpe 0:4bbc531be6e2 285 if (dx > 0) {
dreschpe 0:4bbc531be6e2 286 dx_sym = 1;
dreschpe 0:4bbc531be6e2 287 } else {
dreschpe 0:4bbc531be6e2 288 dx_sym = -1;
dreschpe 0:4bbc531be6e2 289 }
dreschpe 0:4bbc531be6e2 290 // if (dy == 0) { /* horizontal line */
dreschpe 0:4bbc531be6e2 291 // if (x1 > x0) hline(x0,x1,y0,color);
dreschpe 0:4bbc531be6e2 292 // else hline(x1,x0,y0,color);
dreschpe 0:4bbc531be6e2 293 // return;
dreschpe 0:4bbc531be6e2 294 // }
dreschpe 0:4bbc531be6e2 295
dreschpe 0:4bbc531be6e2 296 if (dy > 0) {
dreschpe 0:4bbc531be6e2 297 dy_sym = 1;
dreschpe 0:4bbc531be6e2 298 } else {
dreschpe 0:4bbc531be6e2 299 dy_sym = -1;
dreschpe 0:4bbc531be6e2 300 }
dreschpe 0:4bbc531be6e2 301
dreschpe 0:4bbc531be6e2 302 dx = dx_sym*dx;
dreschpe 0:4bbc531be6e2 303 dy = dy_sym*dy;
dreschpe 0:4bbc531be6e2 304
dreschpe 0:4bbc531be6e2 305 dx_x2 = dx*2;
dreschpe 0:4bbc531be6e2 306 dy_x2 = dy*2;
dreschpe 0:4bbc531be6e2 307
dreschpe 0:4bbc531be6e2 308 if (dx >= dy) {
dreschpe 0:4bbc531be6e2 309 di = dy_x2 - dx;
dreschpe 0:4bbc531be6e2 310 while (x0 != x1) {
dreschpe 0:4bbc531be6e2 311
dreschpe 0:4bbc531be6e2 312 pixel(x0, y0, color);
dreschpe 0:4bbc531be6e2 313 x0 += dx_sym;
dreschpe 0:4bbc531be6e2 314 if (di<0) {
dreschpe 0:4bbc531be6e2 315 di += dy_x2;
dreschpe 0:4bbc531be6e2 316 } else {
dreschpe 0:4bbc531be6e2 317 di += dy_x2 - dx_x2;
dreschpe 0:4bbc531be6e2 318 y0 += dy_sym;
dreschpe 0:4bbc531be6e2 319 }
dreschpe 0:4bbc531be6e2 320 }
dreschpe 0:4bbc531be6e2 321 pixel(x0, y0, color);
dreschpe 0:4bbc531be6e2 322 } else {
dreschpe 0:4bbc531be6e2 323 di = dx_x2 - dy;
dreschpe 0:4bbc531be6e2 324 while (y0 != y1) {
dreschpe 0:4bbc531be6e2 325 pixel(x0, y0, color);
dreschpe 0:4bbc531be6e2 326 y0 += dy_sym;
dreschpe 0:4bbc531be6e2 327 if (di < 0) {
dreschpe 0:4bbc531be6e2 328 di += dx_x2;
dreschpe 0:4bbc531be6e2 329 } else {
dreschpe 0:4bbc531be6e2 330 di += dx_x2 - dy_x2;
dreschpe 0:4bbc531be6e2 331 x0 += dx_sym;
dreschpe 0:4bbc531be6e2 332 }
dreschpe 0:4bbc531be6e2 333 }
dreschpe 0:4bbc531be6e2 334 pixel(x0, y0, color);
dreschpe 0:4bbc531be6e2 335 }
dreschpe 0:4bbc531be6e2 336 return;
dreschpe 0:4bbc531be6e2 337 }
dreschpe 0:4bbc531be6e2 338
dreschpe 0:4bbc531be6e2 339 void C12832_LCD::rect(int x0, int y0, int x1, int y1, int color)
dreschpe 0:4bbc531be6e2 340 {
dreschpe 0:4bbc531be6e2 341
dreschpe 0:4bbc531be6e2 342 if (x1 > x0) line(x0,y0,x1,y0,color);
dreschpe 0:4bbc531be6e2 343 else line(x1,y0,x0,y0,color);
dreschpe 0:4bbc531be6e2 344
dreschpe 0:4bbc531be6e2 345 if (y1 > y0) line(x0,y0,x0,y1,color);
dreschpe 0:4bbc531be6e2 346 else line(x0,y1,x0,y0,color);
dreschpe 0:4bbc531be6e2 347
dreschpe 0:4bbc531be6e2 348 if (x1 > x0) line(x0,y1,x1,y1,color);
dreschpe 0:4bbc531be6e2 349 else line(x1,y1,x0,y1,color);
dreschpe 0:4bbc531be6e2 350
dreschpe 0:4bbc531be6e2 351 if (y1 > y0) line(x1,y0,x1,y1,color);
dreschpe 0:4bbc531be6e2 352 else line(x1,y1,x1,y0,color);
dreschpe 0:4bbc531be6e2 353
dreschpe 0:4bbc531be6e2 354 return;
dreschpe 0:4bbc531be6e2 355 }
dreschpe 0:4bbc531be6e2 356
dreschpe 0:4bbc531be6e2 357 void C12832_LCD::fillrect(int x0, int y0, int x1, int y1, int color)
dreschpe 0:4bbc531be6e2 358 {
dreschpe 0:4bbc531be6e2 359 int l,c,i;
dreschpe 0:4bbc531be6e2 360 if(x0 > x1) {
dreschpe 0:4bbc531be6e2 361 i = x0;
dreschpe 0:4bbc531be6e2 362 x0 = x1;
dreschpe 0:4bbc531be6e2 363 x1 = i;
dreschpe 0:4bbc531be6e2 364 }
dreschpe 0:4bbc531be6e2 365
dreschpe 0:4bbc531be6e2 366 if(y0 > y1) {
dreschpe 0:4bbc531be6e2 367 i = y0;
dreschpe 0:4bbc531be6e2 368 y0 = y1;
dreschpe 0:4bbc531be6e2 369 y1 = i;
dreschpe 0:4bbc531be6e2 370 }
dreschpe 0:4bbc531be6e2 371
dreschpe 0:4bbc531be6e2 372 for(l = x0; l<= x1; l ++) {
dreschpe 0:4bbc531be6e2 373 for(c = y0; c<= y1; c++) {
dreschpe 0:4bbc531be6e2 374 pixel(l,c,color);
dreschpe 0:4bbc531be6e2 375 }
dreschpe 0:4bbc531be6e2 376 }
dreschpe 0:4bbc531be6e2 377 }
dreschpe 0:4bbc531be6e2 378
dreschpe 0:4bbc531be6e2 379
dreschpe 0:4bbc531be6e2 380
dreschpe 0:4bbc531be6e2 381 void C12832_LCD::circle(int x0, int y0, int r, int color)
dreschpe 0:4bbc531be6e2 382 {
dreschpe 0:4bbc531be6e2 383
dreschpe 0:4bbc531be6e2 384 int draw_x0, draw_y0;
dreschpe 0:4bbc531be6e2 385 int draw_x1, draw_y1;
dreschpe 0:4bbc531be6e2 386 int draw_x2, draw_y2;
dreschpe 0:4bbc531be6e2 387 int draw_x3, draw_y3;
dreschpe 0:4bbc531be6e2 388 int draw_x4, draw_y4;
dreschpe 0:4bbc531be6e2 389 int draw_x5, draw_y5;
dreschpe 0:4bbc531be6e2 390 int draw_x6, draw_y6;
dreschpe 0:4bbc531be6e2 391 int draw_x7, draw_y7;
dreschpe 0:4bbc531be6e2 392 int xx, yy;
dreschpe 0:4bbc531be6e2 393 int di;
dreschpe 0:4bbc531be6e2 394 //WindowMax();
dreschpe 0:4bbc531be6e2 395 if (r == 0) { /* no radius */
dreschpe 0:4bbc531be6e2 396 return;
dreschpe 0:4bbc531be6e2 397 }
dreschpe 0:4bbc531be6e2 398
dreschpe 0:4bbc531be6e2 399 draw_x0 = draw_x1 = x0;
dreschpe 0:4bbc531be6e2 400 draw_y0 = draw_y1 = y0 + r;
dreschpe 0:4bbc531be6e2 401 if (draw_y0 < height()) {
dreschpe 0:4bbc531be6e2 402 pixel(draw_x0, draw_y0, color); /* 90 degree */
dreschpe 0:4bbc531be6e2 403 }
dreschpe 0:4bbc531be6e2 404
dreschpe 0:4bbc531be6e2 405 draw_x2 = draw_x3 = x0;
dreschpe 0:4bbc531be6e2 406 draw_y2 = draw_y3 = y0 - r;
dreschpe 0:4bbc531be6e2 407 if (draw_y2 >= 0) {
dreschpe 0:4bbc531be6e2 408 pixel(draw_x2, draw_y2, color); /* 270 degree */
dreschpe 0:4bbc531be6e2 409 }
dreschpe 0:4bbc531be6e2 410
dreschpe 0:4bbc531be6e2 411 draw_x4 = draw_x6 = x0 + r;
dreschpe 0:4bbc531be6e2 412 draw_y4 = draw_y6 = y0;
dreschpe 0:4bbc531be6e2 413 if (draw_x4 < width()) {
dreschpe 0:4bbc531be6e2 414 pixel(draw_x4, draw_y4, color); /* 0 degree */
dreschpe 0:4bbc531be6e2 415 }
dreschpe 0:4bbc531be6e2 416
dreschpe 0:4bbc531be6e2 417 draw_x5 = draw_x7 = x0 - r;
dreschpe 0:4bbc531be6e2 418 draw_y5 = draw_y7 = y0;
dreschpe 0:4bbc531be6e2 419 if (draw_x5>=0) {
dreschpe 0:4bbc531be6e2 420 pixel(draw_x5, draw_y5, color); /* 180 degree */
dreschpe 0:4bbc531be6e2 421 }
dreschpe 0:4bbc531be6e2 422
dreschpe 0:4bbc531be6e2 423 if (r == 1) {
dreschpe 0:4bbc531be6e2 424 return;
dreschpe 0:4bbc531be6e2 425 }
dreschpe 0:4bbc531be6e2 426
dreschpe 0:4bbc531be6e2 427 di = 3 - 2*r;
dreschpe 0:4bbc531be6e2 428 xx = 0;
dreschpe 0:4bbc531be6e2 429 yy = r;
dreschpe 0:4bbc531be6e2 430 while (xx < yy) {
dreschpe 0:4bbc531be6e2 431
dreschpe 0:4bbc531be6e2 432 if (di < 0) {
dreschpe 0:4bbc531be6e2 433 di += 4*xx + 6;
dreschpe 0:4bbc531be6e2 434 } else {
dreschpe 0:4bbc531be6e2 435 di += 4*(xx - yy) + 10;
dreschpe 0:4bbc531be6e2 436 yy--;
dreschpe 0:4bbc531be6e2 437 draw_y0--;
dreschpe 0:4bbc531be6e2 438 draw_y1--;
dreschpe 0:4bbc531be6e2 439 draw_y2++;
dreschpe 0:4bbc531be6e2 440 draw_y3++;
dreschpe 0:4bbc531be6e2 441 draw_x4--;
dreschpe 0:4bbc531be6e2 442 draw_x5++;
dreschpe 0:4bbc531be6e2 443 draw_x6--;
dreschpe 0:4bbc531be6e2 444 draw_x7++;
dreschpe 0:4bbc531be6e2 445 }
dreschpe 0:4bbc531be6e2 446 xx++;
dreschpe 0:4bbc531be6e2 447 draw_x0++;
dreschpe 0:4bbc531be6e2 448 draw_x1--;
dreschpe 0:4bbc531be6e2 449 draw_x2++;
dreschpe 0:4bbc531be6e2 450 draw_x3--;
dreschpe 0:4bbc531be6e2 451 draw_y4++;
dreschpe 0:4bbc531be6e2 452 draw_y5++;
dreschpe 0:4bbc531be6e2 453 draw_y6--;
dreschpe 0:4bbc531be6e2 454 draw_y7--;
dreschpe 0:4bbc531be6e2 455
dreschpe 0:4bbc531be6e2 456 if ( (draw_x0 <= width()) && (draw_y0>=0) ) {
dreschpe 0:4bbc531be6e2 457 pixel(draw_x0, draw_y0, color);
dreschpe 0:4bbc531be6e2 458 }
dreschpe 0:4bbc531be6e2 459
dreschpe 0:4bbc531be6e2 460 if ( (draw_x1 >= 0) && (draw_y1 >= 0) ) {
dreschpe 0:4bbc531be6e2 461 pixel(draw_x1, draw_y1, color);
dreschpe 0:4bbc531be6e2 462 }
dreschpe 0:4bbc531be6e2 463
dreschpe 0:4bbc531be6e2 464 if ( (draw_x2 <= width()) && (draw_y2 <= height()) ) {
dreschpe 0:4bbc531be6e2 465 pixel(draw_x2, draw_y2, color);
dreschpe 0:4bbc531be6e2 466 }
dreschpe 0:4bbc531be6e2 467
dreschpe 0:4bbc531be6e2 468 if ( (draw_x3 >=0 ) && (draw_y3 <= height()) ) {
dreschpe 0:4bbc531be6e2 469 pixel(draw_x3, draw_y3, color);
dreschpe 0:4bbc531be6e2 470 }
dreschpe 0:4bbc531be6e2 471
dreschpe 0:4bbc531be6e2 472 if ( (draw_x4 <= width()) && (draw_y4 >= 0) ) {
dreschpe 0:4bbc531be6e2 473 pixel(draw_x4, draw_y4, color);
dreschpe 0:4bbc531be6e2 474 }
dreschpe 0:4bbc531be6e2 475
dreschpe 0:4bbc531be6e2 476 if ( (draw_x5 >= 0) && (draw_y5 >= 0) ) {
dreschpe 0:4bbc531be6e2 477 pixel(draw_x5, draw_y5, color);
dreschpe 0:4bbc531be6e2 478 }
dreschpe 0:4bbc531be6e2 479 if ( (draw_x6 <=width()) && (draw_y6 <= height()) ) {
dreschpe 0:4bbc531be6e2 480 pixel(draw_x6, draw_y6, color);
dreschpe 0:4bbc531be6e2 481 }
dreschpe 0:4bbc531be6e2 482 if ( (draw_x7 >= 0) && (draw_y7 <= height()) ) {
dreschpe 0:4bbc531be6e2 483 pixel(draw_x7, draw_y7, color);
dreschpe 0:4bbc531be6e2 484 }
dreschpe 0:4bbc531be6e2 485 }
dreschpe 0:4bbc531be6e2 486 return;
dreschpe 0:4bbc531be6e2 487 }
dreschpe 0:4bbc531be6e2 488
dreschpe 0:4bbc531be6e2 489 void C12832_LCD::fillcircle(int x, int y, int r, int color)
dreschpe 0:4bbc531be6e2 490 {
dreschpe 0:4bbc531be6e2 491 int i;
dreschpe 0:4bbc531be6e2 492 for (i = 0; i <= r; i++)
dreschpe 0:4bbc531be6e2 493 circle(x,y,i,color);
dreschpe 0:4bbc531be6e2 494 }
dreschpe 0:4bbc531be6e2 495
dreschpe 0:4bbc531be6e2 496 void C12832_LCD::setmode(int mode)
dreschpe 0:4bbc531be6e2 497 {
dreschpe 0:4bbc531be6e2 498 draw_mode = mode;
dreschpe 0:4bbc531be6e2 499 }
dreschpe 0:4bbc531be6e2 500
dreschpe 0:4bbc531be6e2 501 void C12832_LCD::locate(int x, int y)
dreschpe 0:4bbc531be6e2 502 {
dreschpe 0:4bbc531be6e2 503 char_x = x;
dreschpe 0:4bbc531be6e2 504 char_y = y;
dreschpe 0:4bbc531be6e2 505 }
dreschpe 0:4bbc531be6e2 506
dreschpe 0:4bbc531be6e2 507
dreschpe 0:4bbc531be6e2 508
dreschpe 0:4bbc531be6e2 509 int C12832_LCD::columns()
dreschpe 0:4bbc531be6e2 510 {
dreschpe 0:4bbc531be6e2 511 return width() / font[1];
dreschpe 0:4bbc531be6e2 512 }
dreschpe 0:4bbc531be6e2 513
dreschpe 0:4bbc531be6e2 514
dreschpe 0:4bbc531be6e2 515
dreschpe 0:4bbc531be6e2 516 int C12832_LCD::rows()
dreschpe 0:4bbc531be6e2 517 {
dreschpe 0:4bbc531be6e2 518 return height() / font[2];
dreschpe 0:4bbc531be6e2 519 }
dreschpe 0:4bbc531be6e2 520
dreschpe 0:4bbc531be6e2 521
dreschpe 0:4bbc531be6e2 522
dreschpe 0:4bbc531be6e2 523 int C12832_LCD::_putc(int value)
dreschpe 0:4bbc531be6e2 524 {
dreschpe 0:4bbc531be6e2 525 if (value == '\n') { // new line
dreschpe 0:4bbc531be6e2 526 char_x = 0;
dreschpe 0:4bbc531be6e2 527 char_y = char_y + font[2];
dreschpe 0:4bbc531be6e2 528 if (char_y >= height() - font[2]) {
dreschpe 0:4bbc531be6e2 529 char_y = 0;
dreschpe 0:4bbc531be6e2 530 }
dreschpe 0:4bbc531be6e2 531 } else {
dreschpe 0:4bbc531be6e2 532 character(char_x, char_y, value);
dreschpe 0:4bbc531be6e2 533 }
dreschpe 0:4bbc531be6e2 534 return value;
dreschpe 0:4bbc531be6e2 535 }
dreschpe 0:4bbc531be6e2 536
dreschpe 0:4bbc531be6e2 537 void C12832_LCD::character(int x, int y, int c)
dreschpe 0:4bbc531be6e2 538 {
dreschpe 0:4bbc531be6e2 539 unsigned int hor,vert,offset,bpl,j,i,b;
dreschpe 0:4bbc531be6e2 540 unsigned char* zeichen;
dreschpe 0:4bbc531be6e2 541 unsigned char z,w;
dreschpe 0:4bbc531be6e2 542
dreschpe 0:4bbc531be6e2 543 if ((c < 31) || (c > 127)) return; // test char range
dreschpe 0:4bbc531be6e2 544
dreschpe 0:4bbc531be6e2 545 // read font parameter from start of array
dreschpe 0:4bbc531be6e2 546 offset = font[0]; // bytes / char
dreschpe 0:4bbc531be6e2 547 hor = font[1]; // get hor size of font
dreschpe 0:4bbc531be6e2 548 vert = font[2]; // get vert size of font
dreschpe 0:4bbc531be6e2 549 bpl = font[3]; // bytes per line
dreschpe 0:4bbc531be6e2 550
dreschpe 0:4bbc531be6e2 551 if (char_x + hor > width()) {
dreschpe 0:4bbc531be6e2 552 char_x = 0;
dreschpe 0:4bbc531be6e2 553 char_y = char_y + vert;
dreschpe 0:4bbc531be6e2 554 if (char_y >= height() - font[2]) {
dreschpe 0:4bbc531be6e2 555 char_y = 0;
dreschpe 0:4bbc531be6e2 556 }
dreschpe 0:4bbc531be6e2 557 }
dreschpe 0:4bbc531be6e2 558
dreschpe 0:4bbc531be6e2 559 zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap
dreschpe 0:4bbc531be6e2 560 w = zeichen[0]; // width of actual char
dreschpe 0:4bbc531be6e2 561 // construct the char into the buffer
dreschpe 0:4bbc531be6e2 562 for (j=0; j<vert; j++) { // vert line
dreschpe 0:4bbc531be6e2 563 for (i=0; i<hor; i++) { // horz line
dreschpe 0:4bbc531be6e2 564 z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1];
dreschpe 0:4bbc531be6e2 565 b = 1 << (j & 0x07);
dreschpe 0:4bbc531be6e2 566 if (( z & b ) == 0x00) {
dreschpe 0:4bbc531be6e2 567 pixel(x+i,y+j,0);
dreschpe 0:4bbc531be6e2 568 } else {
dreschpe 0:4bbc531be6e2 569 pixel(x+i,y+j,1);
dreschpe 0:4bbc531be6e2 570 }
dreschpe 0:4bbc531be6e2 571
dreschpe 0:4bbc531be6e2 572 }
dreschpe 0:4bbc531be6e2 573 }
dreschpe 0:4bbc531be6e2 574
dreschpe 0:4bbc531be6e2 575 char_x += w;
dreschpe 0:4bbc531be6e2 576 }
dreschpe 0:4bbc531be6e2 577
dreschpe 0:4bbc531be6e2 578
dreschpe 0:4bbc531be6e2 579 void C12832_LCD::set_font(unsigned char* f)
dreschpe 0:4bbc531be6e2 580 {
dreschpe 0:4bbc531be6e2 581 font = f;
dreschpe 0:4bbc531be6e2 582 }
dreschpe 0:4bbc531be6e2 583
dreschpe 0:4bbc531be6e2 584
dreschpe 0:4bbc531be6e2 585