Jack Cripps / N5110

Library for interfacing to Nokia 5110 LCD display (as found on the SparkFun website).

Fork of N5110 by Craig Evans

N5110.h@31:8a0c21042f82, 2017-02-16 (annotated)

Committer:
valavanisalex
Date:
Thu Feb 16 15:36:44 2017 +0000
Revision:
31:8a0c21042f82
Parent:
29:5bc91bd44c77
Child:
33:d80e568a2e18
Add a destructor to free allocated memory

Who changed what in which revision?

UserRevisionLine numberNew contents of line
eencae 25:444e55e2e419 1 #ifndef N5110_H
eencae 25:444e55e2e419 2 #define N5110_H
eencae 25:444e55e2e419 3
eencae 25:444e55e2e419 4 #include "mbed.h"
eencae 1:df68f34cd32d 5
eencae 25:444e55e2e419 6 // Command Bytes - taken from Chris Yan's library
eencae 25:444e55e2e419 7 // More information can be found in the display datasheet
eencae 25:444e55e2e419 8 // H = 0 - Basic instructions
eencae 25:444e55e2e419 9 #define CMD_DC_CLEAR_DISPLAY 0x08
eencae 25:444e55e2e419 10 #define CMD_DC_NORMAL_MODE 0x0C
eencae 25:444e55e2e419 11 #define CMD_DC_FILL_DISPLAY 0x09
eencae 25:444e55e2e419 12 #define CMD_DC_INVERT_VIDEO 0x0D
eencae 25:444e55e2e419 13 #define CMD_FS_HORIZONTAL_MODE 0x00
eencae 25:444e55e2e419 14 #define CMD_FS_VERTICAL_MODE 0x02
eencae 25:444e55e2e419 15 #define CMD_FS_BASIC_MODE 0x00
eencae 25:444e55e2e419 16 #define CMD_FS_EXTENDED_MODE 0x01
eencae 25:444e55e2e419 17 #define CMD_FS_ACTIVE_MODE 0x00
eencae 25:444e55e2e419 18 #define CMD_FS_POWER_DOWN_MODE 0x04
eencae 25:444e55e2e419 19 // H = 1 - Extended instructions
eencae 25:444e55e2e419 20 #define CMD_TC_TEMP_0 0x04
eencae 25:444e55e2e419 21 #define CMD_TC_TEMP_1 0x05
eencae 25:444e55e2e419 22 #define CMD_TC_TEMP_2 0x06
eencae 25:444e55e2e419 23 #define CMD_TC_TEMP_3 0x07
eencae 25:444e55e2e419 24 #define CMD_BI_MUX_24 0x15
eencae 25:444e55e2e419 25 #define CMD_BI_MUX_48 0x13
eencae 25:444e55e2e419 26 #define CMD_BI_MUX_100 0x10
eencae 25:444e55e2e419 27 #define CMD_VOP_6V06 0xB2
eencae 25:444e55e2e419 28 #define CMD_VOP_7V38 0xC8
eencae 25:444e55e2e419 29
eencae 25:444e55e2e419 30 // number of pixels on display
eencae 25:444e55e2e419 31 #define WIDTH 84
eencae 25:444e55e2e419 32 #define HEIGHT 48
eencae 25:444e55e2e419 33 #define BANKS 6
eencae 25:444e55e2e419 34
eencae 25:444e55e2e419 35 /** N5110 Class
eencae 24:342bdb6679a1 36 @brief Library for interfacing with Nokia 5110 LCD display (https://www.sparkfun.com/products/10168) using the hardware SPI on the mbed.
eencae 24:342bdb6679a1 37 @brief The display is powered from a GPIO pin meaning it can be controlled via software. The LED backlight is also software-controllable (via PWM pin).
eencae 24:342bdb6679a1 38 @brief Can print characters and strings to the display using the included 5x7 font.
eencae 24:342bdb6679a1 39 @brief The library also implements a screen buffer so that individual pixels on the display (84 x 48) can be set, cleared and read.
eencae 24:342bdb6679a1 40 @brief The library can print primitive shapes (lines, circles, rectangles)
eencae 24:342bdb6679a1 41 @brief Acknowledgements to Chris Yan's Nokia_5110 Library.
eencae 24:342bdb6679a1 42
eencae 24:342bdb6679a1 43 @brief Revision 1.3
eencae 24:342bdb6679a1 44
eencae 24:342bdb6679a1 45 @author Craig A. Evans
eencae 24:342bdb6679a1 46 @date 7th February 2017
eencae 24:342bdb6679a1 47
eencae 24:342bdb6679a1 48 @code
eencae 24:342bdb6679a1 49
eencae 24:342bdb6679a1 50 #include "mbed.h"
eencae 24:342bdb6679a1 51 #include "N5110.h"
eencae 24:342bdb6679a1 52
eencae 24:342bdb6679a1 53 // VCC,SCE,RST,D/C,MOSI,SCLK,LED
eencae 24:342bdb6679a1 54 //N5110 lcd(p7,p8,p9,p10,p11,p13,p21); // LPC1768 - pwr from GPIO
eencae 24:342bdb6679a1 55 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // K64F - pwr from 3V3
eencae 24:342bdb6679a1 56
eencae 24:342bdb6679a1 57 int main()
eencae 24:342bdb6679a1 58 {
eencae 24:342bdb6679a1 59 // first need to initialise display
eencae 24:342bdb6679a1 60 lcd.init();
eencae 24:342bdb6679a1 61
eencae 24:342bdb6679a1 62 while(1) {
eencae 24:342bdb6679a1 63
eencae 24:342bdb6679a1 64 // these are default settings so not strictly needed
eencae 24:342bdb6679a1 65 lcd.normalMode(); // normal colour mode
eencae 24:342bdb6679a1 66 lcd.setBrightness(0.5); // put LED backlight on 50%
eencae 24:342bdb6679a1 67
eencae 24:342bdb6679a1 68 lcd.clear(); // clear buffer at start of every loop
eencae 24:342bdb6679a1 69 // can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display)
eencae 24:342bdb6679a1 70 lcd.printString("Hello, World!",0,0);
eencae 24:342bdb6679a1 71
eencae 24:342bdb6679a1 72 char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
eencae 24:342bdb6679a1 73 // so can display a string of a maximum 14 characters in length
eencae 24:342bdb6679a1 74 // or create formatted strings - ensure they aren't more than 14 characters long
eencae 24:342bdb6679a1 75 int temperature = 27;
eencae 24:342bdb6679a1 76 int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
eencae 24:342bdb6679a1 77 // it is important the format specifier ensures the length will fit in the buffer
eencae 24:342bdb6679a1 78 if (length <= 14) // if string will fit on display (assuming printing at x=0)
eencae 24:342bdb6679a1 79 lcd.printString(buffer,0,1); // display on screen
eencae 24:342bdb6679a1 80
eencae 24:342bdb6679a1 81 float pressure = 1012.3; // same idea with floats
eencae 24:342bdb6679a1 82 length = sprintf(buffer,"P = %.2f mb",pressure);
eencae 24:342bdb6679a1 83 if (length <= 14)
eencae 24:342bdb6679a1 84 lcd.printString(buffer,0,2);
eencae 24:342bdb6679a1 85
eencae 24:342bdb6679a1 86 // can also print individual characters at specified place
eencae 24:342bdb6679a1 87 lcd.printChar('X',5,3);
eencae 24:342bdb6679a1 88
eencae 24:342bdb6679a1 89 // draw a line across the display at y = 40 pixels (origin top-left)
eencae 24:342bdb6679a1 90 for (int i = 0; i < WIDTH; i++) {
eencae 24:342bdb6679a1 91 lcd.setPixel(i,40);
eencae 24:342bdb6679a1 92 }
eencae 24:342bdb6679a1 93 // need to refresh display after setting pixels or writing strings
eencae 24:342bdb6679a1 94 lcd.refresh();
eencae 24:342bdb6679a1 95 wait(5.0);
valavanisalex 29:5bc91bd44c77 96
eencae 24:342bdb6679a1 97 // can check status of pixel using getPixel(x,y);
eencae 24:342bdb6679a1 98 lcd.clear(); // clear buffer
eencae 24:342bdb6679a1 99 lcd.setPixel(2,2); // set random pixel in buffer
eencae 24:342bdb6679a1 100 lcd.refresh();
valavanisalex 29:5bc91bd44c77 101 wait(1.0);
valavanisalex 29:5bc91bd44c77 102
eencae 24:342bdb6679a1 103 int pixel_to_test = lcd.getPixel(2,2);
valavanisalex 29:5bc91bd44c77 104
eencae 24:342bdb6679a1 105 printf("2,2 Pixel value = %i\n",pixel_to_test);
valavanisalex 29:5bc91bd44c77 106
eencae 24:342bdb6679a1 107 if ( pixel_to_test ) {
valavanisalex 29:5bc91bd44c77 108 lcd.printString("2,2 is set",0,4);
eencae 24:342bdb6679a1 109 }
valavanisalex 29:5bc91bd44c77 110
eencae 24:342bdb6679a1 111 // this one shouldn't be set
eencae 24:342bdb6679a1 112 pixel_to_test = lcd.getPixel(3,3);
valavanisalex 29:5bc91bd44c77 113
eencae 24:342bdb6679a1 114 printf("3,3 Pixel value = %i\n",pixel_to_test);
valavanisalex 29:5bc91bd44c77 115
eencae 24:342bdb6679a1 116 if ( pixel_to_test == 0 ) {
valavanisalex 29:5bc91bd44c77 117 lcd.printString("3,3 is clear",0,5);
eencae 24:342bdb6679a1 118 }
valavanisalex 29:5bc91bd44c77 119
eencae 24:342bdb6679a1 120 lcd.refresh();
eencae 24:342bdb6679a1 121 wait(4.0);
valavanisalex 29:5bc91bd44c77 122
eencae 24:342bdb6679a1 123 lcd.clear(); // clear buffer
eencae 24:342bdb6679a1 124 lcd.inverseMode(); // invert colours
eencae 24:342bdb6679a1 125 lcd.setBrightness(1.0); // put LED backlight on full
eencae 24:342bdb6679a1 126
eencae 24:342bdb6679a1 127 float array[84];
eencae 24:342bdb6679a1 128
eencae 24:342bdb6679a1 129 for (int i = 0; i < 84; i++) {
eencae 24:342bdb6679a1 130 array[i] = 0.5 + 0.5*sin(i*2*3.14/84);
eencae 24:342bdb6679a1 131 }
eencae 24:342bdb6679a1 132
eencae 24:342bdb6679a1 133 // can also plot graphs - 84 elements only
eencae 24:342bdb6679a1 134 // values must be in range 0.0 - 1.0
eencae 24:342bdb6679a1 135 lcd.plotArray(array);
eencae 24:342bdb6679a1 136 lcd.refresh();
eencae 24:342bdb6679a1 137 wait(5.0);
valavanisalex 29:5bc91bd44c77 138
eencae 24:342bdb6679a1 139 lcd.clear();
eencae 24:342bdb6679a1 140 lcd.normalMode(); // normal colour mode back
eencae 24:342bdb6679a1 141 lcd.setBrightness(0.5); // put LED backlight on 50%
eencae 24:342bdb6679a1 142
eencae 24:342bdb6679a1 143 // example of drawing lines
eencae 24:342bdb6679a1 144 for (int x = 0; x < WIDTH ; x+=10) {
eencae 24:342bdb6679a1 145 // x0,y0,x1,y1,type 0-white,1-black,2-dotted
eencae 24:342bdb6679a1 146 lcd.drawLine(0,0,x,HEIGHT,2);
eencae 24:342bdb6679a1 147 }
eencae 24:342bdb6679a1 148 lcd.refresh(); // refresh after drawing shapes
eencae 24:342bdb6679a1 149 wait(5.0);
valavanisalex 29:5bc91bd44c77 150
valavanisalex 29:5bc91bd44c77 151
eencae 24:342bdb6679a1 152 lcd.clear();
eencae 24:342bdb6679a1 153 // example of how to draw circles
eencae 24:342bdb6679a1 154 lcd.drawCircle(WIDTH/2,HEIGHT/2,20,1); // x,y,radius,black fill
eencae 24:342bdb6679a1 155 lcd.drawCircle(WIDTH/2,HEIGHT/2,10,2); // x,y,radius,white fill
eencae 24:342bdb6679a1 156 lcd.drawCircle(WIDTH/2,HEIGHT/2,30,0); // x,y,radius,transparent with outline
eencae 24:342bdb6679a1 157 lcd.refresh(); // refresh after drawing shapes
eencae 24:342bdb6679a1 158 wait(5.0);
valavanisalex 29:5bc91bd44c77 159
eencae 24:342bdb6679a1 160 lcd.clear();
eencae 24:342bdb6679a1 161 // example of how to draw rectangles
eencae 24:342bdb6679a1 162 // origin x,y,width,height,type
eencae 24:342bdb6679a1 163 lcd.drawRect(10,10,50,30,1); // filled black rectangle
eencae 24:342bdb6679a1 164 lcd.drawRect(15,15,20,10,2); // filled white rectange (no outline)
eencae 24:342bdb6679a1 165 lcd.drawRect(2,2,70,40,0); // transparent, just outline
eencae 24:342bdb6679a1 166 lcd.refresh(); // refresh after drawing shapes
eencae 24:342bdb6679a1 167 wait(5.0);
eencae 24:342bdb6679a1 168
eencae 24:342bdb6679a1 169 }
eencae 24:342bdb6679a1 170 }
eencae 24:342bdb6679a1 171
eencae 24:342bdb6679a1 172 @endcode
eencae 0:d563e74f0ae9 173 */
eencae 1:df68f34cd32d 174 class N5110
eencae 1:df68f34cd32d 175 {
valavanisalex 29:5bc91bd44c77 176 private:
valavanisalex 29:5bc91bd44c77 177 // objects
valavanisalex 29:5bc91bd44c77 178 SPI *_spi;
valavanisalex 29:5bc91bd44c77 179 PwmOut *_led;
valavanisalex 29:5bc91bd44c77 180 DigitalOut *_pwr;
valavanisalex 29:5bc91bd44c77 181 DigitalOut *_sce;
valavanisalex 29:5bc91bd44c77 182 DigitalOut *_rst;
valavanisalex 29:5bc91bd44c77 183 DigitalOut *_dc;
valavanisalex 29:5bc91bd44c77 184
valavanisalex 29:5bc91bd44c77 185 // variables
valavanisalex 29:5bc91bd44c77 186 unsigned char buffer[84][6]; // screen buffer - the 6 is for the banks - each one is 8 bits;
eencae 0:d563e74f0ae9 187
eencae 1:df68f34cd32d 188 public:
valavanisalex 29:5bc91bd44c77 189 /** Create a N5110 object connected to the specified pins
valavanisalex 29:5bc91bd44c77 190 *
valavanisalex 29:5bc91bd44c77 191 * @param pwr Pin connected to Vcc on the LCD display (pin 1)
valavanisalex 29:5bc91bd44c77 192 * @param sce Pin connected to chip enable (pin 3)
valavanisalex 29:5bc91bd44c77 193 * @param rst Pin connected to reset (pin 4)
valavanisalex 29:5bc91bd44c77 194 * @param dc Pin connected to data/command select (pin 5)
valavanisalex 29:5bc91bd44c77 195 * @param mosi Pin connected to data input (MOSI) (pin 6)
valavanisalex 29:5bc91bd44c77 196 * @param sclk Pin connected to serial clock (SCLK) (pin 7)
valavanisalex 29:5bc91bd44c77 197 * @param led Pin connected to LED backlight (must be PWM) (pin 8)
valavanisalex 29:5bc91bd44c77 198 *
valavanisalex 29:5bc91bd44c77 199 */
valavanisalex 29:5bc91bd44c77 200 N5110(PinName const pwrPin,
valavanisalex 29:5bc91bd44c77 201 PinName const scePin,
valavanisalex 29:5bc91bd44c77 202 PinName const rstPin,
valavanisalex 29:5bc91bd44c77 203 PinName const dcPin,
valavanisalex 29:5bc91bd44c77 204 PinName const mosiPin,
valavanisalex 29:5bc91bd44c77 205 PinName const sclkPin,
valavanisalex 29:5bc91bd44c77 206 PinName const ledPin);
eencae 17:780a542d5f8b 207
valavanisalex 29:5bc91bd44c77 208 /** Create a N5110 object connected to the specified pins (Vcc to +3V3)
valavanisalex 29:5bc91bd44c77 209 *
valavanisalex 29:5bc91bd44c77 210 * @param sce Pin connected to chip enable (pin 3)
valavanisalex 29:5bc91bd44c77 211 * @param rst Pin connected to reset (pin 4)
valavanisalex 29:5bc91bd44c77 212 * @param dc Pin connected to data/command select (pin 5)
valavanisalex 29:5bc91bd44c77 213 * @param mosi Pin connected to data input (MOSI) (pin 6)
valavanisalex 29:5bc91bd44c77 214 * @param sclk Pin connected to serial clock (SCLK) (pin 7)
valavanisalex 29:5bc91bd44c77 215 * @param led Pin connected to LED backlight (must be PWM) (pin 8)
valavanisalex 29:5bc91bd44c77 216 *
valavanisalex 29:5bc91bd44c77 217 */
valavanisalex 29:5bc91bd44c77 218 N5110(PinName const scePin,
valavanisalex 29:5bc91bd44c77 219 PinName const rstPin,
valavanisalex 29:5bc91bd44c77 220 PinName const dcPin,
valavanisalex 29:5bc91bd44c77 221 PinName const mosiPin,
valavanisalex 29:5bc91bd44c77 222 PinName const sclkPin,
valavanisalex 29:5bc91bd44c77 223 PinName const ledPin);
eencae 17:780a542d5f8b 224
valavanisalex 31:8a0c21042f82 225 /**
valavanisalex 31:8a0c21042f82 226 * Free allocated memory when object goes out of scope
valavanisalex 31:8a0c21042f82 227 */
valavanisalex 31:8a0c21042f82 228 ~N5110();
valavanisalex 31:8a0c21042f82 229
valavanisalex 29:5bc91bd44c77 230 /** Initialise display
valavanisalex 29:5bc91bd44c77 231 *
valavanisalex 29:5bc91bd44c77 232 * Powers up the display and turns on backlight (50% brightness default).
valavanisalex 29:5bc91bd44c77 233 * Sets the display up in horizontal addressing mode and with normal video mode.
valavanisalex 29:5bc91bd44c77 234 */
valavanisalex 29:5bc91bd44c77 235 void init();
eencae 17:780a542d5f8b 236
valavanisalex 29:5bc91bd44c77 237 /** Turn off
valavanisalex 29:5bc91bd44c77 238 *
valavanisalex 29:5bc91bd44c77 239 * Powers down the display and turns of the backlight.
valavanisalex 29:5bc91bd44c77 240 * Needs to be reinitialised before being re-used.
valavanisalex 29:5bc91bd44c77 241 */
valavanisalex 29:5bc91bd44c77 242 void turnOff();
eencae 17:780a542d5f8b 243
valavanisalex 29:5bc91bd44c77 244 /** Clear
valavanisalex 29:5bc91bd44c77 245 *
valavanisalex 29:5bc91bd44c77 246 * Clears the screen buffer.
valavanisalex 29:5bc91bd44c77 247 */
valavanisalex 29:5bc91bd44c77 248 void clear();
eencae 17:780a542d5f8b 249
valavanisalex 29:5bc91bd44c77 250 /** Turn on normal video mode (default)
valavanisalex 29:5bc91bd44c77 251 * Black on white
valavanisalex 29:5bc91bd44c77 252 */
valavanisalex 29:5bc91bd44c77 253 void normalMode();
valavanisalex 29:5bc91bd44c77 254
valavanisalex 29:5bc91bd44c77 255 /** Turn on inverse video mode (default)
valavanisalex 29:5bc91bd44c77 256 * White on black
valavanisalex 29:5bc91bd44c77 257 */
valavanisalex 29:5bc91bd44c77 258 void inverseMode();
eencae 17:780a542d5f8b 259
valavanisalex 29:5bc91bd44c77 260 /** Set Brightness
valavanisalex 29:5bc91bd44c77 261 *
valavanisalex 29:5bc91bd44c77 262 * Sets brightness of LED backlight.
valavanisalex 29:5bc91bd44c77 263 * @param brightness - float in range 0.0 to 1.0
valavanisalex 29:5bc91bd44c77 264 */
valavanisalex 29:5bc91bd44c77 265 void setBrightness(float const brightness);
eencae 17:780a542d5f8b 266
valavanisalex 29:5bc91bd44c77 267 /** Print String
valavanisalex 29:5bc91bd44c77 268 *
valavanisalex 29:5bc91bd44c77 269 * Prints a string of characters to the screen buffer. String is cut-off after the 83rd pixel.
valavanisalex 29:5bc91bd44c77 270 * @param x - the column number (0 to 83)
valavanisalex 29:5bc91bd44c77 271 * @param y - the row number (0 to 5) - the display is split into 6 banks - each bank can be considered a row
valavanisalex 29:5bc91bd44c77 272 */
valavanisalex 29:5bc91bd44c77 273 void printString(char const *str,
valavanisalex 29:5bc91bd44c77 274 unsigned int const x,
valavanisalex 29:5bc91bd44c77 275 unsigned int const y);
eencae 17:780a542d5f8b 276
valavanisalex 29:5bc91bd44c77 277 /** Print Character
valavanisalex 29:5bc91bd44c77 278 *
valavanisalex 29:5bc91bd44c77 279 * Sends a character to the screen buffer. Printed at the specified location. Character is cut-off after the 83rd pixel.
valavanisalex 29:5bc91bd44c77 280 * @param c - the character to print. Can print ASCII as so printChar('C').
valavanisalex 29:5bc91bd44c77 281 * @param x - the column number (0 to 83)
valavanisalex 29:5bc91bd44c77 282 * @param y - the row number (0 to 5) - the display is split into 6 banks - each bank can be considered a row
valavanisalex 29:5bc91bd44c77 283 */
valavanisalex 29:5bc91bd44c77 284 void printChar(char const c,
valavanisalex 29:5bc91bd44c77 285 unsigned int const x,
valavanisalex 29:5bc91bd44c77 286 unsigned int const y);
eencae 17:780a542d5f8b 287
valavanisalex 29:5bc91bd44c77 288 /** Set a Pixel
valavanisalex 29:5bc91bd44c77 289 *
valavanisalex 29:5bc91bd44c77 290 * This function sets a pixel in the screen buffer.
valavanisalex 29:5bc91bd44c77 291 * @param x - the x co-ordinate of the pixel (0 to 83)
valavanisalex 29:5bc91bd44c77 292 * @param y - the y co-ordinate of the pixel (0 to 47)
valavanisalex 29:5bc91bd44c77 293 */
valavanisalex 29:5bc91bd44c77 294 void setPixel(unsigned int const x,
valavanisalex 29:5bc91bd44c77 295 unsigned int const y);
eencae 17:780a542d5f8b 296
valavanisalex 29:5bc91bd44c77 297 /** Clear a Pixel
valavanisalex 29:5bc91bd44c77 298 *
valavanisalex 29:5bc91bd44c77 299 * This function clears pixel in the screen buffer
valavanisalex 29:5bc91bd44c77 300 * @param x - the x co-ordinate of the pixel (0 to 83)
valavanisalex 29:5bc91bd44c77 301 * @param y - the y co-ordinate of the pixel (0 to 47)
valavanisalex 29:5bc91bd44c77 302 */
valavanisalex 29:5bc91bd44c77 303 void clearPixel(unsigned int const x,
valavanisalex 29:5bc91bd44c77 304 unsigned int const y);
eencae 17:780a542d5f8b 305
valavanisalex 29:5bc91bd44c77 306 /** Get a Pixel
valavanisalex 29:5bc91bd44c77 307 *
valavanisalex 29:5bc91bd44c77 308 * This function gets the status of a pixel in the screen buffer.
valavanisalex 29:5bc91bd44c77 309 * @param x - the x co-ordinate of the pixel (0 to 83)
valavanisalex 29:5bc91bd44c77 310 * @param y - the y co-ordinate of the pixel (0 to 47)
valavanisalex 29:5bc91bd44c77 311 * @returns
valavanisalex 29:5bc91bd44c77 312 * 0 - pixel is clear
valavanisalex 29:5bc91bd44c77 313 * 1 - pixel is set
valavanisalex 29:5bc91bd44c77 314 */
valavanisalex 29:5bc91bd44c77 315 int getPixel(unsigned int const x,
valavanisalex 29:5bc91bd44c77 316 unsigned int const y) const;
eencae 17:780a542d5f8b 317
valavanisalex 29:5bc91bd44c77 318 /** Refresh display
valavanisalex 29:5bc91bd44c77 319 *
valavanisalex 29:5bc91bd44c77 320 * This functions sends the screen buffer to the display.
valavanisalex 29:5bc91bd44c77 321 */
valavanisalex 29:5bc91bd44c77 322 void refresh();
valavanisalex 29:5bc91bd44c77 323
valavanisalex 29:5bc91bd44c77 324 /** Randomise buffer
valavanisalex 29:5bc91bd44c77 325 *
valavanisalex 29:5bc91bd44c77 326 * This function fills the buffer with random data. Can be used to test the display.
valavanisalex 29:5bc91bd44c77 327 * A call to refresh() must be made to update the display to reflect the change in pixels.
valavanisalex 29:5bc91bd44c77 328 * The seed is not set and so the generated pattern will probably be the same each time.
valavanisalex 29:5bc91bd44c77 329 * TODO: Randomise the seed - maybe using the noise on the AnalogIn pins.
valavanisalex 29:5bc91bd44c77 330 */
valavanisalex 29:5bc91bd44c77 331 void randomiseBuffer();
eencae 17:780a542d5f8b 332
valavanisalex 29:5bc91bd44c77 333 /** Plot Array
valavanisalex 29:5bc91bd44c77 334 *
valavanisalex 29:5bc91bd44c77 335 * This function plots a one-dimensional array in the buffer.
valavanisalex 29:5bc91bd44c77 336 * @param array[] - y values of the plot. Values should be normalised in the range 0.0 to 1.0. First 84 plotted.
valavanisalex 29:5bc91bd44c77 337 */
valavanisalex 29:5bc91bd44c77 338 void plotArray(float const array[]);
eencae 17:780a542d5f8b 339
valavanisalex 29:5bc91bd44c77 340 /** Draw Circle
valavanisalex 29:5bc91bd44c77 341 *
valavanisalex 29:5bc91bd44c77 342 * This function draws a circle at the specified origin with specified radius in the screen buffer
valavanisalex 29:5bc91bd44c77 343 * Uses the midpoint circle algorithm.
valavanisalex 29:5bc91bd44c77 344 * @see http://en.wikipedia.org/wiki/Midpoint_circle_algorithm
valavanisalex 29:5bc91bd44c77 345 * @param x0 - x-coordinate of centre
valavanisalex 29:5bc91bd44c77 346 * @param y0 - y-coordinate of centre
valavanisalex 29:5bc91bd44c77 347 * @param radius - radius of circle in pixels
valavanisalex 29:5bc91bd44c77 348 * @param fill - 0 transparent (w/outline), 1 filled black, 2 filled white (wo/outline)
valavanisalex 29:5bc91bd44c77 349 */
valavanisalex 29:5bc91bd44c77 350 void drawCircle(unsigned int const x0,
valavanisalex 29:5bc91bd44c77 351 unsigned int const y0,
valavanisalex 29:5bc91bd44c77 352 unsigned int const radius,
valavanisalex 29:5bc91bd44c77 353 unsigned int const fill);
eencae 1:df68f34cd32d 354
valavanisalex 29:5bc91bd44c77 355 /** Draw Line
valavanisalex 29:5bc91bd44c77 356 *
valavanisalex 29:5bc91bd44c77 357 * This function draws a line between the specified points using linear interpolation.
valavanisalex 29:5bc91bd44c77 358 * @param x0 - x-coordinate of first point
valavanisalex 29:5bc91bd44c77 359 * @param y0 - y-coordinate of first point
valavanisalex 29:5bc91bd44c77 360 * @param x1 - x-coordinate of last point
valavanisalex 29:5bc91bd44c77 361 * @param y1 - y-coordinate of last point
valavanisalex 29:5bc91bd44c77 362 * @param type - 0 white,1 black,2 dotted
valavanisalex 29:5bc91bd44c77 363 */
valavanisalex 29:5bc91bd44c77 364 void drawLine(unsigned int const x0,
valavanisalex 29:5bc91bd44c77 365 unsigned int const y0,
valavanisalex 29:5bc91bd44c77 366 unsigned int const x1,
valavanisalex 29:5bc91bd44c77 367 unsigned int const y1,
valavanisalex 29:5bc91bd44c77 368 unsigned int const type);
eencae 17:780a542d5f8b 369
valavanisalex 29:5bc91bd44c77 370 /** Draw Rectangle
valavanisalex 29:5bc91bd44c77 371 *
valavanisalex 29:5bc91bd44c77 372 * This function draws a rectangle.
valavanisalex 29:5bc91bd44c77 373 * @param x0 - x-coordinate of origin (top-left)
valavanisalex 29:5bc91bd44c77 374 * @param y0 - y-coordinate of origin (top-left)
valavanisalex 29:5bc91bd44c77 375 * @param width - width of rectangle
valavanisalex 29:5bc91bd44c77 376 * @param height - height of rectangle
valavanisalex 29:5bc91bd44c77 377 * @param fill - 0 transparent (w/outline), 1 filled black, 2 filled white (wo/outline)
valavanisalex 29:5bc91bd44c77 378 */
valavanisalex 29:5bc91bd44c77 379 void drawRect(unsigned int const x0,
valavanisalex 29:5bc91bd44c77 380 unsigned int const y0,
valavanisalex 29:5bc91bd44c77 381 unsigned int const width,
valavanisalex 29:5bc91bd44c77 382 unsigned int const height,
valavanisalex 29:5bc91bd44c77 383 unsigned int const fill);
eencae 17:780a542d5f8b 384
eencae 1:df68f34cd32d 385 private:
eencae 24:342bdb6679a1 386 // methods
valavanisalex 29:5bc91bd44c77 387 void setXYAddress(unsigned int const x,
valavanisalex 29:5bc91bd44c77 388 unsigned int const y);
valavanisalex 29:5bc91bd44c77 389 void initSPI();
valavanisalex 29:5bc91bd44c77 390 void turnOn();
valavanisalex 29:5bc91bd44c77 391 void reset();
valavanisalex 29:5bc91bd44c77 392 void clearRAM();
valavanisalex 29:5bc91bd44c77 393 void sendCommand(unsigned char command);
valavanisalex 29:5bc91bd44c77 394 void sendData(unsigned char data);
eencae 0:d563e74f0ae9 395 };
eencae 0:d563e74f0ae9 396
eencae 0:d563e74f0ae9 397 const unsigned char font5x7[480] = {
valavanisalex 29:5bc91bd44c77 398 0x00, 0x00, 0x00, 0x00, 0x00,// (space)
valavanisalex 29:5bc91bd44c77 399 0x00, 0x00, 0x5F, 0x00, 0x00,// !
valavanisalex 29:5bc91bd44c77 400 0x00, 0x07, 0x00, 0x07, 0x00,// "
valavanisalex 29:5bc91bd44c77 401 0x14, 0x7F, 0x14, 0x7F, 0x14,// #
valavanisalex 29:5bc91bd44c77 402 0x24, 0x2A, 0x7F, 0x2A, 0x12,// $
valavanisalex 29:5bc91bd44c77 403 0x23, 0x13, 0x08, 0x64, 0x62,// %
valavanisalex 29:5bc91bd44c77 404 0x36, 0x49, 0x55, 0x22, 0x50,// &
valavanisalex 29:5bc91bd44c77 405 0x00, 0x05, 0x03, 0x00, 0x00,// '
valavanisalex 29:5bc91bd44c77 406 0x00, 0x1C, 0x22, 0x41, 0x00,// (
valavanisalex 29:5bc91bd44c77 407 0x00, 0x41, 0x22, 0x1C, 0x00,// )
valavanisalex 29:5bc91bd44c77 408 0x08, 0x2A, 0x1C, 0x2A, 0x08,// *
valavanisalex 29:5bc91bd44c77 409 0x08, 0x08, 0x3E, 0x08, 0x08,// +
valavanisalex 29:5bc91bd44c77 410 0x00, 0x50, 0x30, 0x00, 0x00,// ,
valavanisalex 29:5bc91bd44c77 411 0x08, 0x08, 0x08, 0x08, 0x08,// -
valavanisalex 29:5bc91bd44c77 412 0x00, 0x60, 0x60, 0x00, 0x00,// .
valavanisalex 29:5bc91bd44c77 413 0x20, 0x10, 0x08, 0x04, 0x02,// /
valavanisalex 29:5bc91bd44c77 414 0x3E, 0x51, 0x49, 0x45, 0x3E,// 0
valavanisalex 29:5bc91bd44c77 415 0x00, 0x42, 0x7F, 0x40, 0x00,// 1
valavanisalex 29:5bc91bd44c77 416 0x42, 0x61, 0x51, 0x49, 0x46,// 2
valavanisalex 29:5bc91bd44c77 417 0x21, 0x41, 0x45, 0x4B, 0x31,// 3
valavanisalex 29:5bc91bd44c77 418 0x18, 0x14, 0x12, 0x7F, 0x10,// 4
valavanisalex 29:5bc91bd44c77 419 0x27, 0x45, 0x45, 0x45, 0x39,// 5
valavanisalex 29:5bc91bd44c77 420 0x3C, 0x4A, 0x49, 0x49, 0x30,// 6
valavanisalex 29:5bc91bd44c77 421 0x01, 0x71, 0x09, 0x05, 0x03,// 7
valavanisalex 29:5bc91bd44c77 422 0x36, 0x49, 0x49, 0x49, 0x36,// 8
valavanisalex 29:5bc91bd44c77 423 0x06, 0x49, 0x49, 0x29, 0x1E,// 9
valavanisalex 29:5bc91bd44c77 424 0x00, 0x36, 0x36, 0x00, 0x00,// :
valavanisalex 29:5bc91bd44c77 425 0x00, 0x56, 0x36, 0x00, 0x00,// ;
valavanisalex 29:5bc91bd44c77 426 0x00, 0x08, 0x14, 0x22, 0x41,// <
valavanisalex 29:5bc91bd44c77 427 0x14, 0x14, 0x14, 0x14, 0x14,// =
valavanisalex 29:5bc91bd44c77 428 0x41, 0x22, 0x14, 0x08, 0x00,// >
valavanisalex 29:5bc91bd44c77 429 0x02, 0x01, 0x51, 0x09, 0x06,// ?
valavanisalex 29:5bc91bd44c77 430 0x32, 0x49, 0x79, 0x41, 0x3E,// @
valavanisalex 29:5bc91bd44c77 431 0x7E, 0x11, 0x11, 0x11, 0x7E,// A
valavanisalex 29:5bc91bd44c77 432 0x7F, 0x49, 0x49, 0x49, 0x36,// B
valavanisalex 29:5bc91bd44c77 433 0x3E, 0x41, 0x41, 0x41, 0x22,// C
valavanisalex 29:5bc91bd44c77 434 0x7F, 0x41, 0x41, 0x22, 0x1C,// D
valavanisalex 29:5bc91bd44c77 435 0x7F, 0x49, 0x49, 0x49, 0x41,// E
valavanisalex 29:5bc91bd44c77 436 0x7F, 0x09, 0x09, 0x01, 0x01,// F
valavanisalex 29:5bc91bd44c77 437 0x3E, 0x41, 0x41, 0x51, 0x32,// G
valavanisalex 29:5bc91bd44c77 438 0x7F, 0x08, 0x08, 0x08, 0x7F,// H
valavanisalex 29:5bc91bd44c77 439 0x00, 0x41, 0x7F, 0x41, 0x00,// I
valavanisalex 29:5bc91bd44c77 440 0x20, 0x40, 0x41, 0x3F, 0x01,// J
valavanisalex 29:5bc91bd44c77 441 0x7F, 0x08, 0x14, 0x22, 0x41,// K
valavanisalex 29:5bc91bd44c77 442 0x7F, 0x40, 0x40, 0x40, 0x40,// L
valavanisalex 29:5bc91bd44c77 443 0x7F, 0x02, 0x04, 0x02, 0x7F,// M
valavanisalex 29:5bc91bd44c77 444 0x7F, 0x04, 0x08, 0x10, 0x7F,// N
valavanisalex 29:5bc91bd44c77 445 0x3E, 0x41, 0x41, 0x41, 0x3E,// O
valavanisalex 29:5bc91bd44c77 446 0x7F, 0x09, 0x09, 0x09, 0x06,// P
valavanisalex 29:5bc91bd44c77 447 0x3E, 0x41, 0x51, 0x21, 0x5E,// Q
valavanisalex 29:5bc91bd44c77 448 0x7F, 0x09, 0x19, 0x29, 0x46,// R
valavanisalex 29:5bc91bd44c77 449 0x46, 0x49, 0x49, 0x49, 0x31,// S
valavanisalex 29:5bc91bd44c77 450 0x01, 0x01, 0x7F, 0x01, 0x01,// T
valavanisalex 29:5bc91bd44c77 451 0x3F, 0x40, 0x40, 0x40, 0x3F,// U
valavanisalex 29:5bc91bd44c77 452 0x1F, 0x20, 0x40, 0x20, 0x1F,// V
valavanisalex 29:5bc91bd44c77 453 0x7F, 0x20, 0x18, 0x20, 0x7F,// W
valavanisalex 29:5bc91bd44c77 454 0x63, 0x14, 0x08, 0x14, 0x63,// X
valavanisalex 29:5bc91bd44c77 455 0x03, 0x04, 0x78, 0x04, 0x03,// Y
valavanisalex 29:5bc91bd44c77 456 0x61, 0x51, 0x49, 0x45, 0x43,// Z
valavanisalex 29:5bc91bd44c77 457 0x00, 0x00, 0x7F, 0x41, 0x41,// [
valavanisalex 29:5bc91bd44c77 458 0x02, 0x04, 0x08, 0x10, 0x20,// "\"
valavanisalex 29:5bc91bd44c77 459 0x41, 0x41, 0x7F, 0x00, 0x00,// ]
valavanisalex 29:5bc91bd44c77 460 0x04, 0x02, 0x01, 0x02, 0x04,// ^
valavanisalex 29:5bc91bd44c77 461 0x40, 0x40, 0x40, 0x40, 0x40,// _
valavanisalex 29:5bc91bd44c77 462 0x00, 0x01, 0x02, 0x04, 0x00,// `
valavanisalex 29:5bc91bd44c77 463 0x20, 0x54, 0x54, 0x54, 0x78,// a
valavanisalex 29:5bc91bd44c77 464 0x7F, 0x48, 0x44, 0x44, 0x38,// b
valavanisalex 29:5bc91bd44c77 465 0x38, 0x44, 0x44, 0x44, 0x20,// c
valavanisalex 29:5bc91bd44c77 466 0x38, 0x44, 0x44, 0x48, 0x7F,// d
valavanisalex 29:5bc91bd44c77 467 0x38, 0x54, 0x54, 0x54, 0x18,// e
valavanisalex 29:5bc91bd44c77 468 0x08, 0x7E, 0x09, 0x01, 0x02,// f
valavanisalex 29:5bc91bd44c77 469 0x08, 0x14, 0x54, 0x54, 0x3C,// g
valavanisalex 29:5bc91bd44c77 470 0x7F, 0x08, 0x04, 0x04, 0x78,// h
valavanisalex 29:5bc91bd44c77 471 0x00, 0x44, 0x7D, 0x40, 0x00,// i
valavanisalex 29:5bc91bd44c77 472 0x20, 0x40, 0x44, 0x3D, 0x00,// j
valavanisalex 29:5bc91bd44c77 473 0x00, 0x7F, 0x10, 0x28, 0x44,// k
valavanisalex 29:5bc91bd44c77 474 0x00, 0x41, 0x7F, 0x40, 0x00,// l
valavanisalex 29:5bc91bd44c77 475 0x7C, 0x04, 0x18, 0x04, 0x78,// m
valavanisalex 29:5bc91bd44c77 476 0x7C, 0x08, 0x04, 0x04, 0x78,// n
valavanisalex 29:5bc91bd44c77 477 0x38, 0x44, 0x44, 0x44, 0x38,// o
valavanisalex 29:5bc91bd44c77 478 0x7C, 0x14, 0x14, 0x14, 0x08,// p
valavanisalex 29:5bc91bd44c77 479 0x08, 0x14, 0x14, 0x18, 0x7C,// q
valavanisalex 29:5bc91bd44c77 480 0x7C, 0x08, 0x04, 0x04, 0x08,// r
valavanisalex 29:5bc91bd44c77 481 0x48, 0x54, 0x54, 0x54, 0x20,// s
valavanisalex 29:5bc91bd44c77 482 0x04, 0x3F, 0x44, 0x40, 0x20,// t
valavanisalex 29:5bc91bd44c77 483 0x3C, 0x40, 0x40, 0x20, 0x7C,// u
valavanisalex 29:5bc91bd44c77 484 0x1C, 0x20, 0x40, 0x20, 0x1C,// v
valavanisalex 29:5bc91bd44c77 485 0x3C, 0x40, 0x30, 0x40, 0x3C,// w
valavanisalex 29:5bc91bd44c77 486 0x44, 0x28, 0x10, 0x28, 0x44,// x
valavanisalex 29:5bc91bd44c77 487 0x0C, 0x50, 0x50, 0x50, 0x3C,// y
valavanisalex 29:5bc91bd44c77 488 0x44, 0x64, 0x54, 0x4C, 0x44,// z
valavanisalex 29:5bc91bd44c77 489 0x00, 0x08, 0x36, 0x41, 0x00,// {
valavanisalex 29:5bc91bd44c77 490 0x00, 0x00, 0x7F, 0x00, 0x00,// |
valavanisalex 29:5bc91bd44c77 491 0x00, 0x41, 0x36, 0x08, 0x00,// }
valavanisalex 29:5bc91bd44c77 492 0x08, 0x08, 0x2A, 0x1C, 0x08,// ->
valavanisalex 29:5bc91bd44c77 493 0x08, 0x1C, 0x2A, 0x08, 0x08 // <-
eencae 0:d563e74f0ae9 494 };
eencae 0:d563e74f0ae9 495
valavanisalex 29:5bc91bd44c77 496 #endif