Roberta Smith / Mbed 2 deprecated ELEC2645_Project_el18rs

All there but errors need fixing

Dependencies:   mbed

Gamepad2/N5110.cpp@5:53e021832adc, 2020-05-31 (annotated)

Committer:
el18rs
Date:
Sun May 31 17:35:30 2020 +0000
Revision:
5:53e021832adc
Parent:
1:35dba0833c7d 
changes made

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el18rs 1:35dba0833c7d 1 #include "mbed.h"
el18rs 1:35dba0833c7d 2 #include "N5110.h"
el18rs 1:35dba0833c7d 3
el18rs 1:35dba0833c7d 4 // overloaded constructor includes power pin - LCD Vcc connected to GPIO pin
el18rs 1:35dba0833c7d 5 // this constructor works fine with LPC1768 - enough current sourced from GPIO
el18rs 1:35dba0833c7d 6 // to power LCD. Doesn't work well with K64F.
el18rs 1:35dba0833c7d 7 N5110::N5110(PinName const pwrPin,
el18rs 1:35dba0833c7d 8 PinName const scePin,
el18rs 1:35dba0833c7d 9 PinName const rstPin,
el18rs 1:35dba0833c7d 10 PinName const dcPin,
el18rs 1:35dba0833c7d 11 PinName const mosiPin,
el18rs 1:35dba0833c7d 12 PinName const sclkPin,
el18rs 1:35dba0833c7d 13 PinName const ledPin)
el18rs 1:35dba0833c7d 14 :
el18rs 1:35dba0833c7d 15 _spi(new SPI(mosiPin,NC,sclkPin)), // create new SPI instance and initialise
el18rs 1:35dba0833c7d 16 _led(new DigitalOut(ledPin)),
el18rs 1:35dba0833c7d 17 _pwr(new DigitalOut(pwrPin)),
el18rs 1:35dba0833c7d 18 _sce(new DigitalOut(scePin)),
el18rs 1:35dba0833c7d 19 _rst(new DigitalOut(rstPin)),
el18rs 1:35dba0833c7d 20 _dc(new DigitalOut(dcPin))
el18rs 1:35dba0833c7d 21 {}
el18rs 1:35dba0833c7d 22
el18rs 1:35dba0833c7d 23 // overloaded constructor does not include power pin - LCD Vcc must be tied to +3V3
el18rs 1:35dba0833c7d 24 // Best to use this with K64F as the GPIO hasn't sufficient output current to reliably
el18rs 1:35dba0833c7d 25 // drive the LCD.
el18rs 1:35dba0833c7d 26 N5110::N5110(PinName const scePin,
el18rs 1:35dba0833c7d 27 PinName const rstPin,
el18rs 1:35dba0833c7d 28 PinName const dcPin,
el18rs 1:35dba0833c7d 29 PinName const mosiPin,
el18rs 1:35dba0833c7d 30 PinName const sclkPin,
el18rs 1:35dba0833c7d 31 PinName const ledPin)
el18rs 1:35dba0833c7d 32 :
el18rs 1:35dba0833c7d 33 _spi(new SPI(mosiPin,NC,sclkPin)), // create new SPI instance and initialise
el18rs 1:35dba0833c7d 34 _led(new DigitalOut(ledPin)),
el18rs 1:35dba0833c7d 35 _pwr(NULL), // pwr not needed so null it to be safe
el18rs 1:35dba0833c7d 36 _sce(new DigitalOut(scePin)),
el18rs 1:35dba0833c7d 37 _rst(new DigitalOut(rstPin)),
el18rs 1:35dba0833c7d 38 _dc(new DigitalOut(dcPin))
el18rs 1:35dba0833c7d 39 {}
el18rs 1:35dba0833c7d 40 // Second overload contructor uses the New Gamepad (Rev 2.1) pin mappings
el18rs 1:35dba0833c7d 41 N5110::N5110()
el18rs 1:35dba0833c7d 42 :
el18rs 1:35dba0833c7d 43 _spi(new SPI(PTD2,NC,PTD1)), // create new SPI instance and initialise
el18rs 1:35dba0833c7d 44 _led(new DigitalOut(PTB23)),
el18rs 1:35dba0833c7d 45 _pwr(NULL), // pwr not needed so null it to be safe
el18rs 1:35dba0833c7d 46 _sce(new DigitalOut(PTB19)),
el18rs 1:35dba0833c7d 47 _rst(new DigitalOut(PTC1)),
el18rs 1:35dba0833c7d 48 _dc(new DigitalOut(PTB18))
el18rs 1:35dba0833c7d 49 {}
el18rs 1:35dba0833c7d 50
el18rs 1:35dba0833c7d 51 N5110::~N5110()
el18rs 1:35dba0833c7d 52 {
el18rs 1:35dba0833c7d 53 delete _spi;
el18rs 1:35dba0833c7d 54
el18rs 1:35dba0833c7d 55 if(_pwr) {
el18rs 1:35dba0833c7d 56 delete _pwr;
el18rs 1:35dba0833c7d 57 }
el18rs 1:35dba0833c7d 58
el18rs 1:35dba0833c7d 59 delete _led;
el18rs 1:35dba0833c7d 60 delete _sce;
el18rs 1:35dba0833c7d 61 delete _rst;
el18rs 1:35dba0833c7d 62 delete _dc;
el18rs 1:35dba0833c7d 63 }
el18rs 1:35dba0833c7d 64
el18rs 1:35dba0833c7d 65 // initialise function - powers up and sends the initialisation commands
el18rs 1:35dba0833c7d 66 void N5110::init()
el18rs 1:35dba0833c7d 67 {
el18rs 1:35dba0833c7d 68 turnOn(); // power up
el18rs 1:35dba0833c7d 69 reset(); // reset LCD - must be done within 100 ms
el18rs 1:35dba0833c7d 70 initSPI();
el18rs 1:35dba0833c7d 71
el18rs 1:35dba0833c7d 72 backLightOn();
el18rs 1:35dba0833c7d 73 setContrast(0.55); // this may need tuning (say 0.4 to 0.6)
el18rs 1:35dba0833c7d 74 setBias(3); // datasheet - 48:1 mux - don't mess with if you don't know what you're doing! (0 to 7)
el18rs 1:35dba0833c7d 75 setTempCoefficient(0); // datasheet - may need increasing (range 0 to 3) at very low temperatures
el18rs 1:35dba0833c7d 76 normalMode(); // normal video mode by default
el18rs 1:35dba0833c7d 77
el18rs 1:35dba0833c7d 78 clearRAM(); // RAM is undefined at power-up so clear to be sure
el18rs 1:35dba0833c7d 79 clear(); // clear buffer
el18rs 1:35dba0833c7d 80 }
el18rs 1:35dba0833c7d 81
el18rs 1:35dba0833c7d 82 // sets normal video mode (black on white)
el18rs 1:35dba0833c7d 83 void N5110::normalMode()
el18rs 1:35dba0833c7d 84 {
el18rs 1:35dba0833c7d 85 sendCommand(0b00100000); // basic instruction
el18rs 1:35dba0833c7d 86 sendCommand(0b00001100); // normal video mode- datasheet
el18rs 1:35dba0833c7d 87 }
el18rs 1:35dba0833c7d 88
el18rs 1:35dba0833c7d 89 // sets normal video mode (white on black)
el18rs 1:35dba0833c7d 90 void N5110::inverseMode()
el18rs 1:35dba0833c7d 91 {
el18rs 1:35dba0833c7d 92 sendCommand(0b00100000); // basic instruction
el18rs 1:35dba0833c7d 93 sendCommand(0b00001101); // inverse video mode - datasheet
el18rs 1:35dba0833c7d 94 }
el18rs 1:35dba0833c7d 95
el18rs 1:35dba0833c7d 96 // function to power up the LCD and backlight - only works when using GPIO to power
el18rs 1:35dba0833c7d 97 void N5110::turnOn()
el18rs 1:35dba0833c7d 98 {
el18rs 1:35dba0833c7d 99 if (_pwr != NULL) {
el18rs 1:35dba0833c7d 100 _pwr->write(1); // apply power
el18rs 1:35dba0833c7d 101 }
el18rs 1:35dba0833c7d 102 }
el18rs 1:35dba0833c7d 103
el18rs 1:35dba0833c7d 104 // function to power down LCD
el18rs 1:35dba0833c7d 105 void N5110::turnOff()
el18rs 1:35dba0833c7d 106 {
el18rs 1:35dba0833c7d 107 clear(); // clear buffer
el18rs 1:35dba0833c7d 108 refresh();
el18rs 1:35dba0833c7d 109 backLightOff(); // turn backlight off
el18rs 1:35dba0833c7d 110 clearRAM(); // clear RAM to ensure specified current consumption
el18rs 1:35dba0833c7d 111 // send command to ensure we are in basic mode
el18rs 1:35dba0833c7d 112
el18rs 1:35dba0833c7d 113 sendCommand(0b00100000); // basic mode
el18rs 1:35dba0833c7d 114 sendCommand(0b00001000); // clear display
el18rs 1:35dba0833c7d 115 sendCommand(0b00100001); // extended mode
el18rs 1:35dba0833c7d 116 sendCommand(0b00100100); // power down
el18rs 1:35dba0833c7d 117
el18rs 1:35dba0833c7d 118 // if we are powering the LCD using the GPIO then make it low to turn off
el18rs 1:35dba0833c7d 119 if (_pwr != NULL) {
el18rs 1:35dba0833c7d 120 wait_ms(10); // small delay and then turn off the power pin
el18rs 1:35dba0833c7d 121 _pwr->write(0); // turn off power
el18rs 1:35dba0833c7d 122 }
el18rs 1:35dba0833c7d 123
el18rs 1:35dba0833c7d 124 }
el18rs 1:35dba0833c7d 125
el18rs 1:35dba0833c7d 126 // function to change LED backlight brightness
el18rs 1:35dba0833c7d 127 void N5110::backLightOn()
el18rs 1:35dba0833c7d 128 {
el18rs 1:35dba0833c7d 129 _led->write(1);
el18rs 1:35dba0833c7d 130 }
el18rs 1:35dba0833c7d 131
el18rs 1:35dba0833c7d 132 // function to change LED backlight brightness
el18rs 1:35dba0833c7d 133 void N5110::backLightOff()
el18rs 1:35dba0833c7d 134 {
el18rs 1:35dba0833c7d 135 _led->write(0);
el18rs 1:35dba0833c7d 136 }
el18rs 1:35dba0833c7d 137
el18rs 1:35dba0833c7d 138 void N5110::setContrast(float contrast) {
el18rs 1:35dba0833c7d 139
el18rs 1:35dba0833c7d 140 // enforce limits
el18rs 1:35dba0833c7d 141 if (contrast > 1.0f)
el18rs 1:35dba0833c7d 142 contrast = 1.0f;
el18rs 1:35dba0833c7d 143 else if (contrast < 0.0f)
el18rs 1:35dba0833c7d 144 contrast = 0.0;
el18rs 1:35dba0833c7d 145
el18rs 1:35dba0833c7d 146 // convert to char in range 0 to 127 (i.e. 6 bits)
el18rs 1:35dba0833c7d 147 char ic = char(contrast*127.0f);
el18rs 1:35dba0833c7d 148
el18rs 1:35dba0833c7d 149 sendCommand(0b00100001); // extended instruction set
el18rs 1:35dba0833c7d 150 sendCommand(0b10000000 | ic); // set Vop (which controls contrast)
el18rs 1:35dba0833c7d 151 sendCommand(0b00100000); // back to basic instruction set
el18rs 1:35dba0833c7d 152 }
el18rs 1:35dba0833c7d 153
el18rs 1:35dba0833c7d 154 void N5110::setTempCoefficient(char tc) {
el18rs 1:35dba0833c7d 155
el18rs 1:35dba0833c7d 156 // enforce limits
el18rs 1:35dba0833c7d 157 if (tc>3) {
el18rs 1:35dba0833c7d 158 tc=3;
el18rs 1:35dba0833c7d 159 }
el18rs 1:35dba0833c7d 160
el18rs 1:35dba0833c7d 161 // temperature coefficient may need increasing at low temperatures
el18rs 1:35dba0833c7d 162
el18rs 1:35dba0833c7d 163 sendCommand(0b00100001); // extended instruction set
el18rs 1:35dba0833c7d 164 sendCommand(0b00000100 | tc);
el18rs 1:35dba0833c7d 165 sendCommand(0b00100000); // back to basic instruction set
el18rs 1:35dba0833c7d 166 }
el18rs 1:35dba0833c7d 167
el18rs 1:35dba0833c7d 168 void N5110::setBias(char bias) {
el18rs 1:35dba0833c7d 169
el18rs 1:35dba0833c7d 170 // from data sheet
el18rs 1:35dba0833c7d 171 // bias mux rate
el18rs 1:35dba0833c7d 172 // 0 1:100
el18rs 1:35dba0833c7d 173 // 1 1:80
el18rs 1:35dba0833c7d 174 // 2 1:65
el18rs 1:35dba0833c7d 175 // 3 1:48 (default)
el18rs 1:35dba0833c7d 176 // 4 1:40/1:34
el18rs 1:35dba0833c7d 177 // 5 1:24
el18rs 1:35dba0833c7d 178 // 6 1:18/1:16
el18rs 1:35dba0833c7d 179 // 7 1:10/1:9/1:8
el18rs 1:35dba0833c7d 180
el18rs 1:35dba0833c7d 181 // enforce limits
el18rs 1:35dba0833c7d 182 if (bias>7) {
el18rs 1:35dba0833c7d 183 bias=7;
el18rs 1:35dba0833c7d 184 }
el18rs 1:35dba0833c7d 185
el18rs 1:35dba0833c7d 186 sendCommand(0b00100001); // extended mode instruction
el18rs 1:35dba0833c7d 187 sendCommand(0b00010000 | bias);
el18rs 1:35dba0833c7d 188 sendCommand(0b00100000); // end of extended mode instruction
el18rs 1:35dba0833c7d 189 }
el18rs 1:35dba0833c7d 190
el18rs 1:35dba0833c7d 191 // pulse the active low reset line
el18rs 1:35dba0833c7d 192 void N5110::reset()
el18rs 1:35dba0833c7d 193 {
el18rs 1:35dba0833c7d 194 _rst->write(0); // reset the LCD
el18rs 1:35dba0833c7d 195 _rst->write(1);
el18rs 1:35dba0833c7d 196 }
el18rs 1:35dba0833c7d 197
el18rs 1:35dba0833c7d 198 // function to initialise SPI peripheral
el18rs 1:35dba0833c7d 199 void N5110::initSPI()
el18rs 1:35dba0833c7d 200 {
el18rs 1:35dba0833c7d 201 _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
el18rs 1:35dba0833c7d 202 _spi->frequency(4000000); // maximum of screen is 4 MHz
el18rs 1:35dba0833c7d 203 }
el18rs 1:35dba0833c7d 204
el18rs 1:35dba0833c7d 205 // send a command to the display
el18rs 1:35dba0833c7d 206 void N5110::sendCommand(unsigned char command)
el18rs 1:35dba0833c7d 207 {
el18rs 1:35dba0833c7d 208 _dc->write(0); // set DC low for command
el18rs 1:35dba0833c7d 209 _sce->write(0); // set CE low to begin frame
el18rs 1:35dba0833c7d 210 _spi->write(command); // send command
el18rs 1:35dba0833c7d 211 _dc->write(1); // turn back to data by default
el18rs 1:35dba0833c7d 212 _sce->write(1); // set CE high to end frame (expected for transmission of single byte)
el18rs 1:35dba0833c7d 213 }
el18rs 1:35dba0833c7d 214
el18rs 1:35dba0833c7d 215 // send data to the display at the current XY address
el18rs 1:35dba0833c7d 216 // dc is set to 1 (i.e. data) after sending a command and so should
el18rs 1:35dba0833c7d 217 // be the default mode.
el18rs 1:35dba0833c7d 218 void N5110::sendData(unsigned char data)
el18rs 1:35dba0833c7d 219 {
el18rs 1:35dba0833c7d 220 _sce->write(0); // set CE low to begin frame
el18rs 1:35dba0833c7d 221 _spi->write(data);
el18rs 1:35dba0833c7d 222 _sce->write(1); // set CE high to end frame (expected for transmission of single byte)
el18rs 1:35dba0833c7d 223 }
el18rs 1:35dba0833c7d 224
el18rs 1:35dba0833c7d 225 // this function writes 0 to the 504 bytes to clear the RAM
el18rs 1:35dba0833c7d 226 void N5110::clearRAM()
el18rs 1:35dba0833c7d 227 {
el18rs 1:35dba0833c7d 228 _sce->write(0); //set CE low to begin frame
el18rs 1:35dba0833c7d 229 for(int i = 0; i < WIDTH * HEIGHT; i++) { // 48 x 84 bits = 504 bytes
el18rs 1:35dba0833c7d 230 _spi->write(0x00); // send 0's
el18rs 1:35dba0833c7d 231 }
el18rs 1:35dba0833c7d 232 _sce->write(1); // set CE high to end frame
el18rs 1:35dba0833c7d 233 }
el18rs 1:35dba0833c7d 234
el18rs 1:35dba0833c7d 235 // function to set the XY address in RAM for subsequenct data write
el18rs 1:35dba0833c7d 236 void N5110::setXYAddress(unsigned int const x,
el18rs 1:35dba0833c7d 237 unsigned int const y)
el18rs 1:35dba0833c7d 238 {
el18rs 1:35dba0833c7d 239 if (x<WIDTH && y<HEIGHT) { // check within range
el18rs 1:35dba0833c7d 240 sendCommand(0b00100000); // basic instruction
el18rs 1:35dba0833c7d 241 sendCommand(0b10000000 | x); // send addresses to display with relevant mask
el18rs 1:35dba0833c7d 242 sendCommand(0b01000000 | y);
el18rs 1:35dba0833c7d 243 }
el18rs 1:35dba0833c7d 244 }
el18rs 1:35dba0833c7d 245
el18rs 1:35dba0833c7d 246 // These functions are used to set, clear and get the value of pixels in the display
el18rs 1:35dba0833c7d 247 // Pixels are addressed in the range of 0 to 47 (y) and 0 to 83 (x). The refresh()
el18rs 1:35dba0833c7d 248 // function must be called after set and clear in order to update the display
el18rs 1:35dba0833c7d 249 void N5110::setPixel(unsigned int const x,
el18rs 1:35dba0833c7d 250 unsigned int const y,
el18rs 1:35dba0833c7d 251 bool const state)
el18rs 1:35dba0833c7d 252 {
el18rs 1:35dba0833c7d 253 if (x<WIDTH && y<HEIGHT) { // check within range
el18rs 1:35dba0833c7d 254 // calculate bank and shift 1 to required position in the data byte
el18rs 1:35dba0833c7d 255 if(state) buffer[x][y/8] |= (1 << y%8);
el18rs 1:35dba0833c7d 256 else buffer[x][y/8] &= ~(1 << y%8);
el18rs 1:35dba0833c7d 257 }
el18rs 1:35dba0833c7d 258 }
el18rs 1:35dba0833c7d 259
el18rs 1:35dba0833c7d 260 void N5110::clearPixel(unsigned int const x,
el18rs 1:35dba0833c7d 261 unsigned int const y)
el18rs 1:35dba0833c7d 262 {
el18rs 1:35dba0833c7d 263 if (x<WIDTH && y<HEIGHT) { // check within range
el18rs 1:35dba0833c7d 264 // calculate bank and shift 1 to required position (using bit clear)
el18rs 1:35dba0833c7d 265 buffer[x][y/8] &= ~(1 << y%8);
el18rs 1:35dba0833c7d 266 }
el18rs 1:35dba0833c7d 267 }
el18rs 1:35dba0833c7d 268
el18rs 1:35dba0833c7d 269 int N5110::getPixel(unsigned int const x,
el18rs 1:35dba0833c7d 270 unsigned int const y) const
el18rs 1:35dba0833c7d 271 {
el18rs 1:35dba0833c7d 272 if (x<WIDTH && y<HEIGHT) { // check within range
el18rs 1:35dba0833c7d 273 // return relevant bank and mask required bit
el18rs 1:35dba0833c7d 274
el18rs 1:35dba0833c7d 275 int pixel = (int) buffer[x][y/8] & (1 << y%8);
el18rs 1:35dba0833c7d 276
el18rs 1:35dba0833c7d 277 if (pixel)
el18rs 1:35dba0833c7d 278 return 1;
el18rs 1:35dba0833c7d 279 else
el18rs 1:35dba0833c7d 280 return 0;
el18rs 1:35dba0833c7d 281 }
el18rs 1:35dba0833c7d 282
el18rs 1:35dba0833c7d 283 return 0;
el18rs 1:35dba0833c7d 284
el18rs 1:35dba0833c7d 285 }
el18rs 1:35dba0833c7d 286
el18rs 1:35dba0833c7d 287 // function to refresh the display
el18rs 1:35dba0833c7d 288 void N5110::refresh()
el18rs 1:35dba0833c7d 289 {
el18rs 1:35dba0833c7d 290 setXYAddress(0,0); // important to set address back to 0,0 before refreshing display
el18rs 1:35dba0833c7d 291 // address auto increments after printing string, so buffer[0][0] will not coincide
el18rs 1:35dba0833c7d 292 // with top-left pixel after priting string
el18rs 1:35dba0833c7d 293
el18rs 1:35dba0833c7d 294 _sce->write(0); //set CE low to begin frame
el18rs 1:35dba0833c7d 295
el18rs 1:35dba0833c7d 296 for(int j = 0; j < BANKS; j++) { // be careful to use correct order (j,i) for horizontal addressing
el18rs 1:35dba0833c7d 297 for(int i = 0; i < WIDTH; i++) {
el18rs 1:35dba0833c7d 298 _spi->write(buffer[i][j]); // send buffer
el18rs 1:35dba0833c7d 299 }
el18rs 1:35dba0833c7d 300 }
el18rs 1:35dba0833c7d 301 _sce->write(1); // set CE high to end frame
el18rs 1:35dba0833c7d 302
el18rs 1:35dba0833c7d 303 }
el18rs 1:35dba0833c7d 304
el18rs 1:35dba0833c7d 305 // fills the buffer with random bytes. Can be used to test the display.
el18rs 1:35dba0833c7d 306 // The rand() function isn't seeded so it probably creates the same pattern everytime
el18rs 1:35dba0833c7d 307 void N5110::randomiseBuffer()
el18rs 1:35dba0833c7d 308 {
el18rs 1:35dba0833c7d 309 int i,j;
el18rs 1:35dba0833c7d 310 for(j = 0; j < BANKS; j++) { // be careful to use correct order (j,i) for horizontal addressing
el18rs 1:35dba0833c7d 311 for(i = 0; i < WIDTH; i++) {
el18rs 1:35dba0833c7d 312 buffer[i][j] = rand()%256; // generate random byte
el18rs 1:35dba0833c7d 313 }
el18rs 1:35dba0833c7d 314 }
el18rs 1:35dba0833c7d 315
el18rs 1:35dba0833c7d 316 }
el18rs 1:35dba0833c7d 317
el18rs 1:35dba0833c7d 318 // function to print 5x7 font
el18rs 1:35dba0833c7d 319 void N5110::printChar(char const c,
el18rs 1:35dba0833c7d 320 unsigned int const x,
el18rs 1:35dba0833c7d 321 unsigned int const y)
el18rs 1:35dba0833c7d 322 {
el18rs 1:35dba0833c7d 323 if (y<BANKS) { // check if printing in range of y banks
el18rs 1:35dba0833c7d 324
el18rs 1:35dba0833c7d 325 for (int i = 0; i < 5 ; i++ ) {
el18rs 1:35dba0833c7d 326 int pixel_x = x+i;
el18rs 1:35dba0833c7d 327 if (pixel_x > WIDTH-1) // ensure pixel isn't outside the buffer size (0 - 83)
el18rs 1:35dba0833c7d 328 break;
el18rs 1:35dba0833c7d 329 buffer[pixel_x][y] = font5x7[(c - 32)*5 + i];
el18rs 1:35dba0833c7d 330 // array is offset by 32 relative to ASCII, each character is 5 pixels wide
el18rs 1:35dba0833c7d 331 }
el18rs 1:35dba0833c7d 332
el18rs 1:35dba0833c7d 333 }
el18rs 1:35dba0833c7d 334 }
el18rs 1:35dba0833c7d 335
el18rs 1:35dba0833c7d 336 // function to print string at specified position
el18rs 1:35dba0833c7d 337 void N5110::printString(const char *str,
el18rs 1:35dba0833c7d 338 unsigned int const x,
el18rs 1:35dba0833c7d 339 unsigned int const y)
el18rs 1:35dba0833c7d 340 {
el18rs 1:35dba0833c7d 341 if (y<BANKS) { // check if printing in range of y banks
el18rs 1:35dba0833c7d 342
el18rs 1:35dba0833c7d 343 int n = 0 ; // counter for number of characters in string
el18rs 1:35dba0833c7d 344 // loop through string and print character
el18rs 1:35dba0833c7d 345 while(*str) {
el18rs 1:35dba0833c7d 346
el18rs 1:35dba0833c7d 347 // writes the character bitmap data to the buffer, so that
el18rs 1:35dba0833c7d 348 // text and pixels can be displayed at the same time
el18rs 1:35dba0833c7d 349 for (int i = 0; i < 5 ; i++ ) {
el18rs 1:35dba0833c7d 350 int pixel_x = x+i+n*6;
el18rs 1:35dba0833c7d 351 if (pixel_x > WIDTH-1) // ensure pixel isn't outside the buffer size (0 - 83)
el18rs 1:35dba0833c7d 352 break;
el18rs 1:35dba0833c7d 353 buffer[pixel_x][y] = font5x7[(*str - 32)*5 + i];
el18rs 1:35dba0833c7d 354 }
el18rs 1:35dba0833c7d 355 str++; // go to next character in string
el18rs 1:35dba0833c7d 356 n++; // increment index
el18rs 1:35dba0833c7d 357 }
el18rs 1:35dba0833c7d 358 }
el18rs 1:35dba0833c7d 359 }
el18rs 1:35dba0833c7d 360
el18rs 1:35dba0833c7d 361 // function to clear the screen buffer
el18rs 1:35dba0833c7d 362 void N5110::clear()
el18rs 1:35dba0833c7d 363 {
el18rs 1:35dba0833c7d 364 memset(buffer,0,sizeof(buffer));
el18rs 1:35dba0833c7d 365 }
el18rs 1:35dba0833c7d 366
el18rs 1:35dba0833c7d 367 // function to plot array on display
el18rs 1:35dba0833c7d 368 void N5110::plotArray(float const array[])
el18rs 1:35dba0833c7d 369 {
el18rs 1:35dba0833c7d 370 for (int i=0; i<WIDTH; i++) { // loop through array
el18rs 1:35dba0833c7d 371 // elements are normalised from 0.0 to 1.0, so multiply
el18rs 1:35dba0833c7d 372 // by 47 to convert to pixel range, and subtract from 47
el18rs 1:35dba0833c7d 373 // since top-left is 0,0 in the display geometry
el18rs 1:35dba0833c7d 374 setPixel(i,47 - int(array[i]*47.0f),true);
el18rs 1:35dba0833c7d 375 }
el18rs 1:35dba0833c7d 376
el18rs 1:35dba0833c7d 377 }
el18rs 1:35dba0833c7d 378
el18rs 1:35dba0833c7d 379 // function to draw circle
el18rs 1:35dba0833c7d 380 void N5110:: drawCircle(unsigned int const x0,
el18rs 1:35dba0833c7d 381 unsigned int const y0,
el18rs 1:35dba0833c7d 382 unsigned int const radius,
el18rs 1:35dba0833c7d 383 FillType const fill)
el18rs 1:35dba0833c7d 384 {
el18rs 1:35dba0833c7d 385 // from http://en.wikipedia.org/wiki/Midpoint_circle_algorithm
el18rs 1:35dba0833c7d 386 int x = radius;
el18rs 1:35dba0833c7d 387 int y = 0;
el18rs 1:35dba0833c7d 388 int radiusError = 1-x;
el18rs 1:35dba0833c7d 389
el18rs 1:35dba0833c7d 390 while(x >= y) {
el18rs 1:35dba0833c7d 391
el18rs 1:35dba0833c7d 392 // if transparent, just draw outline
el18rs 1:35dba0833c7d 393 if (fill == FILL_TRANSPARENT) {
el18rs 1:35dba0833c7d 394 setPixel( x + x0, y + y0,true);
el18rs 1:35dba0833c7d 395 setPixel(-x + x0, y + y0,true);
el18rs 1:35dba0833c7d 396 setPixel( y + x0, x + y0,true);
el18rs 1:35dba0833c7d 397 setPixel(-y + x0, x + y0,true);
el18rs 1:35dba0833c7d 398 setPixel(-y + x0, -x + y0,true);
el18rs 1:35dba0833c7d 399 setPixel( y + x0, -x + y0,true);
el18rs 1:35dba0833c7d 400 setPixel( x + x0, -y + y0,true);
el18rs 1:35dba0833c7d 401 setPixel(-x + x0, -y + y0,true);
el18rs 1:35dba0833c7d 402 } else { // drawing filled circle, so draw lines between points at same y value
el18rs 1:35dba0833c7d 403
el18rs 1:35dba0833c7d 404 int type = (fill==FILL_BLACK) ? 1:0; // black or white fill
el18rs 1:35dba0833c7d 405
el18rs 1:35dba0833c7d 406 drawLine(x+x0,y+y0,-x+x0,y+y0,type);
el18rs 1:35dba0833c7d 407 drawLine(y+x0,x+y0,-y+x0,x+y0,type);
el18rs 1:35dba0833c7d 408 drawLine(y+x0,-x+y0,-y+x0,-x+y0,type);
el18rs 1:35dba0833c7d 409 drawLine(x+x0,-y+y0,-x+x0,-y+y0,type);
el18rs 1:35dba0833c7d 410 }
el18rs 1:35dba0833c7d 411
el18rs 1:35dba0833c7d 412 y++;
el18rs 1:35dba0833c7d 413 if (radiusError<0) {
el18rs 1:35dba0833c7d 414 radiusError += 2 * y + 1;
el18rs 1:35dba0833c7d 415 } else {
el18rs 1:35dba0833c7d 416 x--;
el18rs 1:35dba0833c7d 417 radiusError += 2 * (y - x) + 1;
el18rs 1:35dba0833c7d 418 }
el18rs 1:35dba0833c7d 419 }
el18rs 1:35dba0833c7d 420
el18rs 1:35dba0833c7d 421 }
el18rs 1:35dba0833c7d 422
el18rs 1:35dba0833c7d 423 void N5110::drawLine(unsigned int const x0,
el18rs 1:35dba0833c7d 424 unsigned int const y0,
el18rs 1:35dba0833c7d 425 unsigned int const x1,
el18rs 1:35dba0833c7d 426 unsigned int const y1,
el18rs 1:35dba0833c7d 427 unsigned int const type)
el18rs 1:35dba0833c7d 428 {
el18rs 1:35dba0833c7d 429 // Note that the ranges can be negative so we have to turn the input values
el18rs 1:35dba0833c7d 430 // into signed integers first
el18rs 1:35dba0833c7d 431 int const y_range = static_cast<int>(y1) - static_cast<int>(y0);
el18rs 1:35dba0833c7d 432 int const x_range = static_cast<int>(x1) - static_cast<int>(x0);
el18rs 1:35dba0833c7d 433
el18rs 1:35dba0833c7d 434 // if dotted line, set step to 2, else step is 1
el18rs 1:35dba0833c7d 435 unsigned int const step = (type==2) ? 2:1;
el18rs 1:35dba0833c7d 436
el18rs 1:35dba0833c7d 437 // make sure we loop over the largest range to get the most pixels on the display
el18rs 1:35dba0833c7d 438 // for instance, if drawing a vertical line (x_range = 0), we need to loop down the y pixels
el18rs 1:35dba0833c7d 439 // or else we'll only end up with 1 pixel in the x column
el18rs 1:35dba0833c7d 440 if ( abs(x_range) > abs(y_range) ) {
el18rs 1:35dba0833c7d 441
el18rs 1:35dba0833c7d 442 // ensure we loop from smallest to largest or else for-loop won't run as expected
el18rs 1:35dba0833c7d 443 unsigned int const start = x_range > 0 ? x0:x1;
el18rs 1:35dba0833c7d 444 unsigned int const stop = x_range > 0 ? x1:x0;
el18rs 1:35dba0833c7d 445
el18rs 1:35dba0833c7d 446 // loop between x pixels
el18rs 1:35dba0833c7d 447 for (unsigned int x = start; x<= stop ; x+=step) {
el18rs 1:35dba0833c7d 448 // do linear interpolation
el18rs 1:35dba0833c7d 449 int const dx = static_cast<int>(x)-static_cast<int>(x0);
el18rs 1:35dba0833c7d 450 unsigned int const y = y0 + y_range * dx / x_range;
el18rs 1:35dba0833c7d 451
el18rs 1:35dba0833c7d 452 // If the line type is '0', this will clear the pixel
el18rs 1:35dba0833c7d 453 // If it is '1' or '2', the pixel will be set
el18rs 1:35dba0833c7d 454 setPixel(x,y, type);
el18rs 1:35dba0833c7d 455 }
el18rs 1:35dba0833c7d 456 } else {
el18rs 1:35dba0833c7d 457
el18rs 1:35dba0833c7d 458 // ensure we loop from smallest to largest or else for-loop won't run as expected
el18rs 1:35dba0833c7d 459 unsigned int const start = y_range > 0 ? y0:y1;
el18rs 1:35dba0833c7d 460 unsigned int const stop = y_range > 0 ? y1:y0;
el18rs 1:35dba0833c7d 461
el18rs 1:35dba0833c7d 462 for (unsigned int y = start; y<= stop ; y+=step) {
el18rs 1:35dba0833c7d 463 // do linear interpolation
el18rs 1:35dba0833c7d 464 int const dy = static_cast<int>(y)-static_cast<int>(y0);
el18rs 1:35dba0833c7d 465 unsigned int const x = x0 + x_range * dy / y_range;
el18rs 1:35dba0833c7d 466
el18rs 1:35dba0833c7d 467 // If the line type is '0', this will clear the pixel
el18rs 1:35dba0833c7d 468 // If it is '1' or '2', the pixel will be set
el18rs 1:35dba0833c7d 469 setPixel(x,y, type);
el18rs 1:35dba0833c7d 470 }
el18rs 1:35dba0833c7d 471 }
el18rs 1:35dba0833c7d 472
el18rs 1:35dba0833c7d 473 }
el18rs 1:35dba0833c7d 474
el18rs 1:35dba0833c7d 475 void N5110::drawRect(unsigned int const x0,
el18rs 1:35dba0833c7d 476 unsigned int const y0,
el18rs 1:35dba0833c7d 477 unsigned int const width,
el18rs 1:35dba0833c7d 478 unsigned int const height,
el18rs 1:35dba0833c7d 479 FillType const fill)
el18rs 1:35dba0833c7d 480 {
el18rs 1:35dba0833c7d 481 if (fill == FILL_TRANSPARENT) { // transparent, just outline
el18rs 1:35dba0833c7d 482 drawLine(x0,y0,x0+(width-1),y0,1); // top
el18rs 1:35dba0833c7d 483 drawLine(x0,y0+(height-1),x0+(width-1),y0+(height-1),1); // bottom
el18rs 1:35dba0833c7d 484 drawLine(x0,y0,x0,y0+(height-1),1); // left
el18rs 1:35dba0833c7d 485 drawLine(x0+(width-1),y0,x0+(width-1),y0+(height-1),1); // right
el18rs 1:35dba0833c7d 486 } else { // filled rectangle
el18rs 1:35dba0833c7d 487 int type = (fill==FILL_BLACK) ? 1:0; // black or white fill
el18rs 1:35dba0833c7d 488 for (int y = y0; y<y0+height; y++) { // loop through rows of rectangle
el18rs 1:35dba0833c7d 489 drawLine(x0,y,x0+(width-1),y,type); // draw line across screen
el18rs 1:35dba0833c7d 490 }
el18rs 1:35dba0833c7d 491 }
el18rs 1:35dba0833c7d 492 }
el18rs 1:35dba0833c7d 493
el18rs 1:35dba0833c7d 494 void N5110::drawSprite(int x0,
el18rs 1:35dba0833c7d 495 int y0,
el18rs 1:35dba0833c7d 496 int nrows,
el18rs 1:35dba0833c7d 497 int ncols,
el18rs 1:35dba0833c7d 498 int *sprite)
el18rs 1:35dba0833c7d 499 {
el18rs 1:35dba0833c7d 500 for (int i = 0; i < nrows; i++) {
el18rs 1:35dba0833c7d 501 for (int j = 0 ; j < ncols ; j++) {
el18rs 1:35dba0833c7d 502
el18rs 1:35dba0833c7d 503 int pixel = *((sprite+i*ncols)+j);
el18rs 1:35dba0833c7d 504 setPixel(x0+j,y0+i, pixel);
el18rs 1:35dba0833c7d 505 }
el18rs 1:35dba0833c7d 506 }
el18rs 1:35dba0833c7d 507 }