ELEC2645 (2018/19) / Mbed 2 deprecated el17yfk

Game codes for Pokemon Academy Yiu Fai Kwok - 201198802 I have read the University Regulations on Plagiarism and state that the work covered by this declaration is my own and does not contain any unacknowledged work from other sources.

Dependencies:   mbed FXOS8700CQ mbed-rtos

N5110/N5110.cpp@34:3ddfaa217eca, 2019-05-09 (annotated)

Committer:
yfkwok
Date:
Thu May 09 00:41:05 2019 +0000
Revision:
34:3ddfaa217eca
Parent:
0:1da4db5de653 
09/05/2019 - Last commit before submission

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yfkwok 0:1da4db5de653 1 #include "mbed.h"
yfkwok 0:1da4db5de653 2 #include "N5110.h"
yfkwok 0:1da4db5de653 3
yfkwok 0:1da4db5de653 4 // overloaded constructor includes power pin - LCD Vcc connected to GPIO pin
yfkwok 0:1da4db5de653 5 // this constructor works fine with LPC1768 - enough current sourced from GPIO
yfkwok 0:1da4db5de653 6 // to power LCD. Doesn't work well with K64F.
yfkwok 0:1da4db5de653 7 N5110::N5110(PinName const pwrPin,
yfkwok 0:1da4db5de653 8 PinName const scePin,
yfkwok 0:1da4db5de653 9 PinName const rstPin,
yfkwok 0:1da4db5de653 10 PinName const dcPin,
yfkwok 0:1da4db5de653 11 PinName const mosiPin,
yfkwok 0:1da4db5de653 12 PinName const sclkPin,
yfkwok 0:1da4db5de653 13 PinName const ledPin)
yfkwok 0:1da4db5de653 14 :
yfkwok 0:1da4db5de653 15 _spi(new SPI(mosiPin,NC,sclkPin)), // create new SPI instance and initialise
yfkwok 0:1da4db5de653 16 _led(new PwmOut(ledPin)),
yfkwok 0:1da4db5de653 17 _pwr(new DigitalOut(pwrPin)),
yfkwok 0:1da4db5de653 18 _sce(new DigitalOut(scePin)),
yfkwok 0:1da4db5de653 19 _rst(new DigitalOut(rstPin)),
yfkwok 0:1da4db5de653 20 _dc(new DigitalOut(dcPin))
yfkwok 0:1da4db5de653 21 {}
yfkwok 0:1da4db5de653 22
yfkwok 0:1da4db5de653 23 // overloaded constructor does not include power pin - LCD Vcc must be tied to +3V3
yfkwok 0:1da4db5de653 24 // Best to use this with K64F as the GPIO hasn't sufficient output current to reliably
yfkwok 0:1da4db5de653 25 // drive the LCD.
yfkwok 0:1da4db5de653 26 N5110::N5110(PinName const scePin,
yfkwok 0:1da4db5de653 27 PinName const rstPin,
yfkwok 0:1da4db5de653 28 PinName const dcPin,
yfkwok 0:1da4db5de653 29 PinName const mosiPin,
yfkwok 0:1da4db5de653 30 PinName const sclkPin,
yfkwok 0:1da4db5de653 31 PinName const ledPin)
yfkwok 0:1da4db5de653 32 :
yfkwok 0:1da4db5de653 33 _spi(new SPI(mosiPin,NC,sclkPin)), // create new SPI instance and initialise
yfkwok 0:1da4db5de653 34 _led(new PwmOut(ledPin)),
yfkwok 0:1da4db5de653 35 _pwr(NULL), // pwr not needed so null it to be safe
yfkwok 0:1da4db5de653 36 _sce(new DigitalOut(scePin)),
yfkwok 0:1da4db5de653 37 _rst(new DigitalOut(rstPin)),
yfkwok 0:1da4db5de653 38 _dc(new DigitalOut(dcPin))
yfkwok 0:1da4db5de653 39 {}
yfkwok 0:1da4db5de653 40
yfkwok 0:1da4db5de653 41 N5110::~N5110()
yfkwok 0:1da4db5de653 42 {
yfkwok 0:1da4db5de653 43 delete _spi;
yfkwok 0:1da4db5de653 44
yfkwok 0:1da4db5de653 45 if(_pwr) {
yfkwok 0:1da4db5de653 46 delete _pwr;
yfkwok 0:1da4db5de653 47 }
yfkwok 0:1da4db5de653 48
yfkwok 0:1da4db5de653 49 delete _led;
yfkwok 0:1da4db5de653 50 delete _sce;
yfkwok 0:1da4db5de653 51 delete _rst;
yfkwok 0:1da4db5de653 52 delete _dc;
yfkwok 0:1da4db5de653 53 }
yfkwok 0:1da4db5de653 54
yfkwok 0:1da4db5de653 55 // initialise function - powers up and sends the initialisation commands
yfkwok 0:1da4db5de653 56 void N5110::init()
yfkwok 0:1da4db5de653 57 {
yfkwok 0:1da4db5de653 58 turnOn(); // power up
yfkwok 0:1da4db5de653 59 reset(); // reset LCD - must be done within 100 ms
yfkwok 0:1da4db5de653 60 initSPI();
yfkwok 0:1da4db5de653 61
yfkwok 0:1da4db5de653 62 setContrast(0.55); // this may need tuning (say 0.4 to 0.6)
yfkwok 0:1da4db5de653 63 setBias(3); // datasheet - 48:1 mux - don't mess with if you don't know what you're doing! (0 to 7)
yfkwok 0:1da4db5de653 64 setTempCoefficient(0); // datasheet - may need increasing (range 0 to 3) at very low temperatures
yfkwok 0:1da4db5de653 65 normalMode(); // normal video mode by default
yfkwok 0:1da4db5de653 66
yfkwok 0:1da4db5de653 67 clearRAM(); // RAM is undefined at power-up so clear to be sure
yfkwok 0:1da4db5de653 68 clear(); // clear buffer
yfkwok 0:1da4db5de653 69 setBrightness(0.5);
yfkwok 0:1da4db5de653 70 }
yfkwok 0:1da4db5de653 71
yfkwok 0:1da4db5de653 72 // sets normal video mode (black on white)
yfkwok 0:1da4db5de653 73 void N5110::normalMode()
yfkwok 0:1da4db5de653 74 {
yfkwok 0:1da4db5de653 75 sendCommand(0b00100000); // basic instruction
yfkwok 0:1da4db5de653 76 sendCommand(0b00001100); // normal video mode- datasheet
yfkwok 0:1da4db5de653 77 }
yfkwok 0:1da4db5de653 78
yfkwok 0:1da4db5de653 79 // sets normal video mode (white on black)
yfkwok 0:1da4db5de653 80 void N5110::inverseMode()
yfkwok 0:1da4db5de653 81 {
yfkwok 0:1da4db5de653 82 sendCommand(0b00100000); // basic instruction
yfkwok 0:1da4db5de653 83 sendCommand(0b00001101); // inverse video mode - datasheet
yfkwok 0:1da4db5de653 84 }
yfkwok 0:1da4db5de653 85
yfkwok 0:1da4db5de653 86 // function to power up the LCD and backlight - only works when using GPIO to power
yfkwok 0:1da4db5de653 87 void N5110::turnOn()
yfkwok 0:1da4db5de653 88 {
yfkwok 0:1da4db5de653 89 if (_pwr != NULL) {
yfkwok 0:1da4db5de653 90 _pwr->write(1); // apply power
yfkwok 0:1da4db5de653 91 }
yfkwok 0:1da4db5de653 92 }
yfkwok 0:1da4db5de653 93
yfkwok 0:1da4db5de653 94 // function to power down LCD
yfkwok 0:1da4db5de653 95 void N5110::turnOff()
yfkwok 0:1da4db5de653 96 {
yfkwok 0:1da4db5de653 97 clear(); // clear buffer
yfkwok 0:1da4db5de653 98 refresh();
yfkwok 0:1da4db5de653 99 setBrightness(0.0); // turn backlight off
yfkwok 0:1da4db5de653 100 clearRAM(); // clear RAM to ensure specified current consumption
yfkwok 0:1da4db5de653 101 // send command to ensure we are in basic mode
yfkwok 0:1da4db5de653 102
yfkwok 0:1da4db5de653 103 sendCommand(0b00100000); // basic mode
yfkwok 0:1da4db5de653 104 sendCommand(0b00001000); // clear display
yfkwok 0:1da4db5de653 105 sendCommand(0b00100001); // extended mode
yfkwok 0:1da4db5de653 106 sendCommand(0b00100100); // power down
yfkwok 0:1da4db5de653 107
yfkwok 0:1da4db5de653 108 // if we are powering the LCD using the GPIO then make it low to turn off
yfkwok 0:1da4db5de653 109 if (_pwr != NULL) {
yfkwok 0:1da4db5de653 110 wait_ms(10); // small delay and then turn off the power pin
yfkwok 0:1da4db5de653 111 _pwr->write(0); // turn off power
yfkwok 0:1da4db5de653 112 }
yfkwok 0:1da4db5de653 113
yfkwok 0:1da4db5de653 114 }
yfkwok 0:1da4db5de653 115
yfkwok 0:1da4db5de653 116 // function to change LED backlight brightness
yfkwok 0:1da4db5de653 117 void N5110::setBrightness(float brightness)
yfkwok 0:1da4db5de653 118 {
yfkwok 0:1da4db5de653 119 // check whether brightness is within range
yfkwok 0:1da4db5de653 120 if (brightness < 0.0f)
yfkwok 0:1da4db5de653 121 brightness = 0.0f;
yfkwok 0:1da4db5de653 122 if (brightness > 1.0f)
yfkwok 0:1da4db5de653 123 brightness = 1.0f;
yfkwok 0:1da4db5de653 124 // set PWM duty cycle
yfkwok 0:1da4db5de653 125 _led->write(brightness);
yfkwok 0:1da4db5de653 126 }
yfkwok 0:1da4db5de653 127
yfkwok 0:1da4db5de653 128 void N5110::setContrast(float contrast) {
yfkwok 0:1da4db5de653 129
yfkwok 0:1da4db5de653 130 // enforce limits
yfkwok 0:1da4db5de653 131 if (contrast > 1.0f)
yfkwok 0:1da4db5de653 132 contrast = 1.0f;
yfkwok 0:1da4db5de653 133 else if (contrast < 0.0f)
yfkwok 0:1da4db5de653 134 contrast = 0.0;
yfkwok 0:1da4db5de653 135
yfkwok 0:1da4db5de653 136 // convert to char in range 0 to 127 (i.e. 6 bits)
yfkwok 0:1da4db5de653 137 char ic = char(contrast*127.0f);
yfkwok 0:1da4db5de653 138
yfkwok 0:1da4db5de653 139 sendCommand(0b00100001); // extended instruction set
yfkwok 0:1da4db5de653 140 sendCommand(0b10000000 | ic); // set Vop (which controls contrast)
yfkwok 0:1da4db5de653 141 sendCommand(0b00100000); // back to basic instruction set
yfkwok 0:1da4db5de653 142 }
yfkwok 0:1da4db5de653 143
yfkwok 0:1da4db5de653 144 void N5110::setTempCoefficient(char tc) {
yfkwok 0:1da4db5de653 145
yfkwok 0:1da4db5de653 146 // enforce limits
yfkwok 0:1da4db5de653 147 if (tc>3) {
yfkwok 0:1da4db5de653 148 tc=3;
yfkwok 0:1da4db5de653 149 }
yfkwok 0:1da4db5de653 150
yfkwok 0:1da4db5de653 151 // temperature coefficient may need increasing at low temperatures
yfkwok 0:1da4db5de653 152
yfkwok 0:1da4db5de653 153 sendCommand(0b00100001); // extended instruction set
yfkwok 0:1da4db5de653 154 sendCommand(0b00000100 | tc);
yfkwok 0:1da4db5de653 155 sendCommand(0b00100000); // back to basic instruction set
yfkwok 0:1da4db5de653 156 }
yfkwok 0:1da4db5de653 157
yfkwok 0:1da4db5de653 158 void N5110::setBias(char bias) {
yfkwok 0:1da4db5de653 159
yfkwok 0:1da4db5de653 160 // from data sheet
yfkwok 0:1da4db5de653 161 // bias mux rate
yfkwok 0:1da4db5de653 162 // 0 1:100
yfkwok 0:1da4db5de653 163 // 1 1:80
yfkwok 0:1da4db5de653 164 // 2 1:65
yfkwok 0:1da4db5de653 165 // 3 1:48 (default)
yfkwok 0:1da4db5de653 166 // 4 1:40/1:34
yfkwok 0:1da4db5de653 167 // 5 1:24
yfkwok 0:1da4db5de653 168 // 6 1:18/1:16
yfkwok 0:1da4db5de653 169 // 7 1:10/1:9/1:8
yfkwok 0:1da4db5de653 170
yfkwok 0:1da4db5de653 171 // enforce limits
yfkwok 0:1da4db5de653 172 if (bias>7) {
yfkwok 0:1da4db5de653 173 bias=7;
yfkwok 0:1da4db5de653 174 }
yfkwok 0:1da4db5de653 175
yfkwok 0:1da4db5de653 176 sendCommand(0b00100001); // extended mode instruction
yfkwok 0:1da4db5de653 177 sendCommand(0b00010000 | bias);
yfkwok 0:1da4db5de653 178 sendCommand(0b00100000); // end of extended mode instruction
yfkwok 0:1da4db5de653 179 }
yfkwok 0:1da4db5de653 180
yfkwok 0:1da4db5de653 181 // pulse the active low reset line
yfkwok 0:1da4db5de653 182 void N5110::reset()
yfkwok 0:1da4db5de653 183 {
yfkwok 0:1da4db5de653 184 _rst->write(0); // reset the LCD
yfkwok 0:1da4db5de653 185 _rst->write(1);
yfkwok 0:1da4db5de653 186 }
yfkwok 0:1da4db5de653 187
yfkwok 0:1da4db5de653 188 // function to initialise SPI peripheral
yfkwok 0:1da4db5de653 189 void N5110::initSPI()
yfkwok 0:1da4db5de653 190 {
yfkwok 0:1da4db5de653 191 _spi->format(8,1); // 8 bits, Mode 1 - polarity 0, phase 1 - base value of clock is 0, data captured on falling edge/propagated on rising edge
yfkwok 0:1da4db5de653 192 _spi->frequency(4000000); // maximum of screen is 4 MHz
yfkwok 0:1da4db5de653 193 }
yfkwok 0:1da4db5de653 194
yfkwok 0:1da4db5de653 195 // send a command to the display
yfkwok 0:1da4db5de653 196 void N5110::sendCommand(unsigned char command)
yfkwok 0:1da4db5de653 197 {
yfkwok 0:1da4db5de653 198 _dc->write(0); // set DC low for command
yfkwok 0:1da4db5de653 199 _sce->write(0); // set CE low to begin frame
yfkwok 0:1da4db5de653 200 _spi->write(command); // send command
yfkwok 0:1da4db5de653 201 _dc->write(1); // turn back to data by default
yfkwok 0:1da4db5de653 202 _sce->write(1); // set CE high to end frame (expected for transmission of single byte)
yfkwok 0:1da4db5de653 203 }
yfkwok 0:1da4db5de653 204
yfkwok 0:1da4db5de653 205 // send data to the display at the current XY address
yfkwok 0:1da4db5de653 206 // dc is set to 1 (i.e. data) after sending a command and so should
yfkwok 0:1da4db5de653 207 // be the default mode.
yfkwok 0:1da4db5de653 208 void N5110::sendData(unsigned char data)
yfkwok 0:1da4db5de653 209 {
yfkwok 0:1da4db5de653 210 _sce->write(0); // set CE low to begin frame
yfkwok 0:1da4db5de653 211 _spi->write(data);
yfkwok 0:1da4db5de653 212 _sce->write(1); // set CE high to end frame (expected for transmission of single byte)
yfkwok 0:1da4db5de653 213 }
yfkwok 0:1da4db5de653 214
yfkwok 0:1da4db5de653 215 // this function writes 0 to the 504 bytes to clear the RAM
yfkwok 0:1da4db5de653 216 void N5110::clearRAM()
yfkwok 0:1da4db5de653 217 {
yfkwok 0:1da4db5de653 218 _sce->write(0); //set CE low to begin frame
yfkwok 0:1da4db5de653 219 for(int i = 0; i < WIDTH * HEIGHT; i++) { // 48 x 84 bits = 504 bytes
yfkwok 0:1da4db5de653 220 _spi->write(0x00); // send 0's
yfkwok 0:1da4db5de653 221 }
yfkwok 0:1da4db5de653 222 _sce->write(1); // set CE high to end frame
yfkwok 0:1da4db5de653 223 }
yfkwok 0:1da4db5de653 224
yfkwok 0:1da4db5de653 225 // function to set the XY address in RAM for subsequenct data write
yfkwok 0:1da4db5de653 226 void N5110::setXYAddress(unsigned int const x,
yfkwok 0:1da4db5de653 227 unsigned int const y)
yfkwok 0:1da4db5de653 228 {
yfkwok 0:1da4db5de653 229 if (x<WIDTH && y<HEIGHT) { // check within range
yfkwok 0:1da4db5de653 230 sendCommand(0b00100000); // basic instruction
yfkwok 0:1da4db5de653 231 sendCommand(0b10000000 | x); // send addresses to display with relevant mask
yfkwok 0:1da4db5de653 232 sendCommand(0b01000000 | y);
yfkwok 0:1da4db5de653 233 }
yfkwok 0:1da4db5de653 234 }
yfkwok 0:1da4db5de653 235
yfkwok 0:1da4db5de653 236 // These functions are used to set, clear and get the value of pixels in the display
yfkwok 0:1da4db5de653 237 // Pixels are addressed in the range of 0 to 47 (y) and 0 to 83 (x). The refresh()
yfkwok 0:1da4db5de653 238 // function must be called after set and clear in order to update the display
yfkwok 0:1da4db5de653 239 void N5110::setPixel(unsigned int const x,
yfkwok 0:1da4db5de653 240 unsigned int const y,
yfkwok 0:1da4db5de653 241 bool const state)
yfkwok 0:1da4db5de653 242 {
yfkwok 0:1da4db5de653 243 if (x<WIDTH && y<HEIGHT) { // check within range
yfkwok 0:1da4db5de653 244 // calculate bank and shift 1 to required position in the data byte
yfkwok 0:1da4db5de653 245 if(state) buffer[x][y/8] |= (1 << y%8);
yfkwok 0:1da4db5de653 246 else buffer[x][y/8] &= ~(1 << y%8);
yfkwok 0:1da4db5de653 247 }
yfkwok 0:1da4db5de653 248 }
yfkwok 0:1da4db5de653 249
yfkwok 0:1da4db5de653 250 void N5110::clearPixel(unsigned int const x,
yfkwok 0:1da4db5de653 251 unsigned int const y)
yfkwok 0:1da4db5de653 252 {
yfkwok 0:1da4db5de653 253 if (x<WIDTH && y<HEIGHT) { // check within range
yfkwok 0:1da4db5de653 254 // calculate bank and shift 1 to required position (using bit clear)
yfkwok 0:1da4db5de653 255 buffer[x][y/8] &= ~(1 << y%8);
yfkwok 0:1da4db5de653 256 }
yfkwok 0:1da4db5de653 257 }
yfkwok 0:1da4db5de653 258
yfkwok 0:1da4db5de653 259 int N5110::getPixel(unsigned int const x,
yfkwok 0:1da4db5de653 260 unsigned int const y) const
yfkwok 0:1da4db5de653 261 {
yfkwok 0:1da4db5de653 262 if (x<WIDTH && y<HEIGHT) { // check within range
yfkwok 0:1da4db5de653 263 // return relevant bank and mask required bit
yfkwok 0:1da4db5de653 264
yfkwok 0:1da4db5de653 265 int pixel = (int) buffer[x][y/8] & (1 << y%8);
yfkwok 0:1da4db5de653 266
yfkwok 0:1da4db5de653 267 if (pixel)
yfkwok 0:1da4db5de653 268 return 1;
yfkwok 0:1da4db5de653 269 else
yfkwok 0:1da4db5de653 270 return 0;
yfkwok 0:1da4db5de653 271 }
yfkwok 0:1da4db5de653 272
yfkwok 0:1da4db5de653 273 return 0;
yfkwok 0:1da4db5de653 274
yfkwok 0:1da4db5de653 275 }
yfkwok 0:1da4db5de653 276
yfkwok 0:1da4db5de653 277 // function to refresh the display
yfkwok 0:1da4db5de653 278 void N5110::refresh()
yfkwok 0:1da4db5de653 279 {
yfkwok 0:1da4db5de653 280 setXYAddress(0,0); // important to set address back to 0,0 before refreshing display
yfkwok 0:1da4db5de653 281 // address auto increments after printing string, so buffer[0][0] will not coincide
yfkwok 0:1da4db5de653 282 // with top-left pixel after priting string
yfkwok 0:1da4db5de653 283
yfkwok 0:1da4db5de653 284 _sce->write(0); //set CE low to begin frame
yfkwok 0:1da4db5de653 285
yfkwok 0:1da4db5de653 286 for(int j = 0; j < BANKS; j++) { // be careful to use correct order (j,i) for horizontal addressing
yfkwok 0:1da4db5de653 287 for(int i = 0; i < WIDTH; i++) {
yfkwok 0:1da4db5de653 288 _spi->write(buffer[i][j]); // send buffer
yfkwok 0:1da4db5de653 289 }
yfkwok 0:1da4db5de653 290 }
yfkwok 0:1da4db5de653 291 _sce->write(1); // set CE high to end frame
yfkwok 0:1da4db5de653 292
yfkwok 0:1da4db5de653 293 }
yfkwok 0:1da4db5de653 294
yfkwok 0:1da4db5de653 295 // fills the buffer with random bytes. Can be used to test the display.
yfkwok 0:1da4db5de653 296 // The rand() function isn't seeded so it probably creates the same pattern everytime
yfkwok 0:1da4db5de653 297 void N5110::randomiseBuffer()
yfkwok 0:1da4db5de653 298 {
yfkwok 0:1da4db5de653 299 int i,j;
yfkwok 0:1da4db5de653 300 for(j = 0; j < BANKS; j++) { // be careful to use correct order (j,i) for horizontal addressing
yfkwok 0:1da4db5de653 301 for(i = 0; i < WIDTH; i++) {
yfkwok 0:1da4db5de653 302 buffer[i][j] = rand()%256; // generate random byte
yfkwok 0:1da4db5de653 303 }
yfkwok 0:1da4db5de653 304 }
yfkwok 0:1da4db5de653 305
yfkwok 0:1da4db5de653 306 }
yfkwok 0:1da4db5de653 307
yfkwok 0:1da4db5de653 308 // function to print 5x7 font
yfkwok 0:1da4db5de653 309 void N5110::printChar(char const c,
yfkwok 0:1da4db5de653 310 unsigned int const x,
yfkwok 0:1da4db5de653 311 unsigned int const y)
yfkwok 0:1da4db5de653 312 {
yfkwok 0:1da4db5de653 313 if (y<BANKS) { // check if printing in range of y banks
yfkwok 0:1da4db5de653 314
yfkwok 0:1da4db5de653 315 for (int i = 0; i < 5 ; i++ ) {
yfkwok 0:1da4db5de653 316 int pixel_x = x+i;
yfkwok 0:1da4db5de653 317 if (pixel_x > WIDTH-1) // ensure pixel isn't outside the buffer size (0 - 83)
yfkwok 0:1da4db5de653 318 break;
yfkwok 0:1da4db5de653 319 buffer[pixel_x][y] = font5x7[(c - 32)*5 + i];
yfkwok 0:1da4db5de653 320 // array is offset by 32 relative to ASCII, each character is 5 pixels wide
yfkwok 0:1da4db5de653 321 }
yfkwok 0:1da4db5de653 322
yfkwok 0:1da4db5de653 323 }
yfkwok 0:1da4db5de653 324 }
yfkwok 0:1da4db5de653 325
yfkwok 0:1da4db5de653 326 // function to print string at specified position
yfkwok 0:1da4db5de653 327 void N5110::printString(const char *str,
yfkwok 0:1da4db5de653 328 unsigned int const x,
yfkwok 0:1da4db5de653 329 unsigned int const y)
yfkwok 0:1da4db5de653 330 {
yfkwok 0:1da4db5de653 331 if (y<BANKS) { // check if printing in range of y banks
yfkwok 0:1da4db5de653 332
yfkwok 0:1da4db5de653 333 int n = 0 ; // counter for number of characters in string
yfkwok 0:1da4db5de653 334 // loop through string and print character
yfkwok 0:1da4db5de653 335 while(*str) {
yfkwok 0:1da4db5de653 336
yfkwok 0:1da4db5de653 337 // writes the character bitmap data to the buffer, so that
yfkwok 0:1da4db5de653 338 // text and pixels can be displayed at the same time
yfkwok 0:1da4db5de653 339 for (int i = 0; i < 5 ; i++ ) {
yfkwok 0:1da4db5de653 340 int pixel_x = x+i+n*6;
yfkwok 0:1da4db5de653 341 if (pixel_x > WIDTH-1) // ensure pixel isn't outside the buffer size (0 - 83)
yfkwok 0:1da4db5de653 342 break;
yfkwok 0:1da4db5de653 343 buffer[pixel_x][y] = font5x7[(*str - 32)*5 + i];
yfkwok 0:1da4db5de653 344 }
yfkwok 0:1da4db5de653 345 str++; // go to next character in string
yfkwok 0:1da4db5de653 346 n++; // increment index
yfkwok 0:1da4db5de653 347 }
yfkwok 0:1da4db5de653 348 }
yfkwok 0:1da4db5de653 349 }
yfkwok 0:1da4db5de653 350
yfkwok 0:1da4db5de653 351 // function to clear the screen buffer
yfkwok 0:1da4db5de653 352 void N5110::clear()
yfkwok 0:1da4db5de653 353 {
yfkwok 0:1da4db5de653 354 memset(buffer,0,sizeof(buffer));
yfkwok 0:1da4db5de653 355 }
yfkwok 0:1da4db5de653 356
yfkwok 0:1da4db5de653 357 // function to plot array on display
yfkwok 0:1da4db5de653 358 void N5110::plotArray(float const array[])
yfkwok 0:1da4db5de653 359 {
yfkwok 0:1da4db5de653 360 for (int i=0; i<WIDTH; i++) { // loop through array
yfkwok 0:1da4db5de653 361 // elements are normalised from 0.0 to 1.0, so multiply
yfkwok 0:1da4db5de653 362 // by 47 to convert to pixel range, and subtract from 47
yfkwok 0:1da4db5de653 363 // since top-left is 0,0 in the display geometry
yfkwok 0:1da4db5de653 364 setPixel(i,47 - int(array[i]*47.0f),true);
yfkwok 0:1da4db5de653 365 }
yfkwok 0:1da4db5de653 366
yfkwok 0:1da4db5de653 367 }
yfkwok 0:1da4db5de653 368
yfkwok 0:1da4db5de653 369 // function to draw circle
yfkwok 0:1da4db5de653 370 void N5110:: drawCircle(unsigned int const x0,
yfkwok 0:1da4db5de653 371 unsigned int const y0,
yfkwok 0:1da4db5de653 372 unsigned int const radius,
yfkwok 0:1da4db5de653 373 FillType const fill)
yfkwok 0:1da4db5de653 374 {
yfkwok 0:1da4db5de653 375 // from http://en.wikipedia.org/wiki/Midpoint_circle_algorithm
yfkwok 0:1da4db5de653 376 int x = radius;
yfkwok 0:1da4db5de653 377 int y = 0;
yfkwok 0:1da4db5de653 378 int radiusError = 1-x;
yfkwok 0:1da4db5de653 379
yfkwok 0:1da4db5de653 380 while(x >= y) {
yfkwok 0:1da4db5de653 381
yfkwok 0:1da4db5de653 382 // if transparent, just draw outline
yfkwok 0:1da4db5de653 383 if (fill == FILL_TRANSPARENT) {
yfkwok 0:1da4db5de653 384 setPixel( x + x0, y + y0,true);
yfkwok 0:1da4db5de653 385 setPixel(-x + x0, y + y0,true);
yfkwok 0:1da4db5de653 386 setPixel( y + x0, x + y0,true);
yfkwok 0:1da4db5de653 387 setPixel(-y + x0, x + y0,true);
yfkwok 0:1da4db5de653 388 setPixel(-y + x0, -x + y0,true);
yfkwok 0:1da4db5de653 389 setPixel( y + x0, -x + y0,true);
yfkwok 0:1da4db5de653 390 setPixel( x + x0, -y + y0,true);
yfkwok 0:1da4db5de653 391 setPixel(-x + x0, -y + y0,true);
yfkwok 0:1da4db5de653 392 } else { // drawing filled circle, so draw lines between points at same y value
yfkwok 0:1da4db5de653 393
yfkwok 0:1da4db5de653 394 int type = (fill==FILL_BLACK) ? 1:0; // black or white fill
yfkwok 0:1da4db5de653 395
yfkwok 0:1da4db5de653 396 drawLine(x+x0,y+y0,-x+x0,y+y0,type);
yfkwok 0:1da4db5de653 397 drawLine(y+x0,x+y0,-y+x0,x+y0,type);
yfkwok 0:1da4db5de653 398 drawLine(y+x0,-x+y0,-y+x0,-x+y0,type);
yfkwok 0:1da4db5de653 399 drawLine(x+x0,-y+y0,-x+x0,-y+y0,type);
yfkwok 0:1da4db5de653 400 }
yfkwok 0:1da4db5de653 401
yfkwok 0:1da4db5de653 402 y++;
yfkwok 0:1da4db5de653 403 if (radiusError<0) {
yfkwok 0:1da4db5de653 404 radiusError += 2 * y + 1;
yfkwok 0:1da4db5de653 405 } else {
yfkwok 0:1da4db5de653 406 x--;
yfkwok 0:1da4db5de653 407 radiusError += 2 * (y - x) + 1;
yfkwok 0:1da4db5de653 408 }
yfkwok 0:1da4db5de653 409 }
yfkwok 0:1da4db5de653 410
yfkwok 0:1da4db5de653 411 }
yfkwok 0:1da4db5de653 412
yfkwok 0:1da4db5de653 413 void N5110::drawLine(unsigned int const x0,
yfkwok 0:1da4db5de653 414 unsigned int const y0,
yfkwok 0:1da4db5de653 415 unsigned int const x1,
yfkwok 0:1da4db5de653 416 unsigned int const y1,
yfkwok 0:1da4db5de653 417 unsigned int const type)
yfkwok 0:1da4db5de653 418 {
yfkwok 0:1da4db5de653 419 // Note that the ranges can be negative so we have to turn the input values
yfkwok 0:1da4db5de653 420 // into signed integers first
yfkwok 0:1da4db5de653 421 int const y_range = static_cast<int>(y1) - static_cast<int>(y0);
yfkwok 0:1da4db5de653 422 int const x_range = static_cast<int>(x1) - static_cast<int>(x0);
yfkwok 0:1da4db5de653 423
yfkwok 0:1da4db5de653 424 // if dotted line, set step to 2, else step is 1
yfkwok 0:1da4db5de653 425 unsigned int const step = (type==2) ? 2:1;
yfkwok 0:1da4db5de653 426
yfkwok 0:1da4db5de653 427 // make sure we loop over the largest range to get the most pixels on the display
yfkwok 0:1da4db5de653 428 // for instance, if drawing a vertical line (x_range = 0), we need to loop down the y pixels
yfkwok 0:1da4db5de653 429 // or else we'll only end up with 1 pixel in the x column
yfkwok 0:1da4db5de653 430 if ( abs(x_range) > abs(y_range) ) {
yfkwok 0:1da4db5de653 431
yfkwok 0:1da4db5de653 432 // ensure we loop from smallest to largest or else for-loop won't run as expected
yfkwok 0:1da4db5de653 433 unsigned int const start = x_range > 0 ? x0:x1;
yfkwok 0:1da4db5de653 434 unsigned int const stop = x_range > 0 ? x1:x0;
yfkwok 0:1da4db5de653 435
yfkwok 0:1da4db5de653 436 // loop between x pixels
yfkwok 0:1da4db5de653 437 for (unsigned int x = start; x<= stop ; x+=step) {
yfkwok 0:1da4db5de653 438 // do linear interpolation
yfkwok 0:1da4db5de653 439 int const dx = static_cast<int>(x)-static_cast<int>(x0);
yfkwok 0:1da4db5de653 440 unsigned int const y = y0 + y_range * dx / x_range;
yfkwok 0:1da4db5de653 441
yfkwok 0:1da4db5de653 442 // If the line type is '0', this will clear the pixel
yfkwok 0:1da4db5de653 443 // If it is '1' or '2', the pixel will be set
yfkwok 0:1da4db5de653 444 setPixel(x,y, type);
yfkwok 0:1da4db5de653 445 }
yfkwok 0:1da4db5de653 446 } else {
yfkwok 0:1da4db5de653 447
yfkwok 0:1da4db5de653 448 // ensure we loop from smallest to largest or else for-loop won't run as expected
yfkwok 0:1da4db5de653 449 unsigned int const start = y_range > 0 ? y0:y1;
yfkwok 0:1da4db5de653 450 unsigned int const stop = y_range > 0 ? y1:y0;
yfkwok 0:1da4db5de653 451
yfkwok 0:1da4db5de653 452 for (unsigned int y = start; y<= stop ; y+=step) {
yfkwok 0:1da4db5de653 453 // do linear interpolation
yfkwok 0:1da4db5de653 454 int const dy = static_cast<int>(y)-static_cast<int>(y0);
yfkwok 0:1da4db5de653 455 unsigned int const x = x0 + x_range * dy / y_range;
yfkwok 0:1da4db5de653 456
yfkwok 0:1da4db5de653 457 // If the line type is '0', this will clear the pixel
yfkwok 0:1da4db5de653 458 // If it is '1' or '2', the pixel will be set
yfkwok 0:1da4db5de653 459 setPixel(x,y, type);
yfkwok 0:1da4db5de653 460 }
yfkwok 0:1da4db5de653 461 }
yfkwok 0:1da4db5de653 462
yfkwok 0:1da4db5de653 463 }
yfkwok 0:1da4db5de653 464
yfkwok 0:1da4db5de653 465 void N5110::drawRect(unsigned int const x0,
yfkwok 0:1da4db5de653 466 unsigned int const y0,
yfkwok 0:1da4db5de653 467 unsigned int const width,
yfkwok 0:1da4db5de653 468 unsigned int const height,
yfkwok 0:1da4db5de653 469 FillType const fill)
yfkwok 0:1da4db5de653 470 {
yfkwok 0:1da4db5de653 471 if (fill == FILL_TRANSPARENT) { // transparent, just outline
yfkwok 0:1da4db5de653 472 drawLine(x0,y0,x0+(width-1),y0,1); // top
yfkwok 0:1da4db5de653 473 drawLine(x0,y0+(height-1),x0+(width-1),y0+(height-1),1); // bottom
yfkwok 0:1da4db5de653 474 drawLine(x0,y0,x0,y0+(height-1),1); // left
yfkwok 0:1da4db5de653 475 drawLine(x0+(width-1),y0,x0+(width-1),y0+(height-1),1); // right
yfkwok 0:1da4db5de653 476 } else { // filled rectangle
yfkwok 0:1da4db5de653 477 int type = (fill==FILL_BLACK) ? 1:0; // black or white fill
yfkwok 0:1da4db5de653 478 for (int y = y0; y<y0+height; y++) { // loop through rows of rectangle
yfkwok 0:1da4db5de653 479 drawLine(x0,y,x0+(width-1),y,type); // draw line across screen
yfkwok 0:1da4db5de653 480 }
yfkwok 0:1da4db5de653 481 }
yfkwok 0:1da4db5de653 482 }
yfkwok 0:1da4db5de653 483
yfkwok 0:1da4db5de653 484 void N5110::drawSprite(int x0,
yfkwok 0:1da4db5de653 485 int y0,
yfkwok 0:1da4db5de653 486 int nrows,
yfkwok 0:1da4db5de653 487 int ncols,
yfkwok 0:1da4db5de653 488 int *sprite)
yfkwok 0:1da4db5de653 489 {
yfkwok 0:1da4db5de653 490 for (int i = 0; i < nrows; i++) {
yfkwok 0:1da4db5de653 491 for (int j = 0 ; j < ncols ; j++) {
yfkwok 0:1da4db5de653 492
yfkwok 0:1da4db5de653 493 int pixel = *((sprite+i*ncols)+j);
yfkwok 0:1da4db5de653 494 setPixel(x0+j,y0+i, pixel);
yfkwok 0:1da4db5de653 495 }
yfkwok 0:1da4db5de653 496 }
yfkwok 0:1da4db5de653 497 }