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Li Ruofan 201199450
Dependencies: mbed Gamepad Joystick
Diff: N5110/N5110.h
- Revision:
- 0:44c1a60f8732
- Child:
- 8:b4a2954dd74f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/N5110/N5110.h Sun Apr 26 17:58:49 2020 +0000 @@ -0,0 +1,502 @@ +#ifndef N5110_H +#define N5110_H + +#include "mbed.h" + +// Command Bytes - taken from Chris Yan's library +// More information can be found in the display datasheet +// H = 0 - Basic instructions +#define CMD_DC_CLEAR_DISPLAY 0x08 +#define CMD_DC_NORMAL_MODE 0x0C +#define CMD_DC_FILL_DISPLAY 0x09 +#define CMD_DC_INVERT_VIDEO 0x0D +#define CMD_FS_HORIZONTAL_MODE 0x00 +#define CMD_FS_VERTICAL_MODE 0x02 +#define CMD_FS_BASIC_MODE 0x00 +#define CMD_FS_EXTENDED_MODE 0x01 +#define CMD_FS_ACTIVE_MODE 0x00 +#define CMD_FS_POWER_DOWN_MODE 0x04 +// H = 1 - Extended instructions +#define CMD_TC_TEMP_0 0x04 +#define CMD_TC_TEMP_1 0x05 +#define CMD_TC_TEMP_2 0x06 +#define CMD_TC_TEMP_3 0x07 +#define CMD_BI_MUX_24 0x15 +#define CMD_BI_MUX_48 0x13 +#define CMD_BI_MUX_100 0x10 +#define CMD_VOP_6V06 0xB2 +#define CMD_VOP_7V38 0xC8 + +// number of pixels on display +#define WIDTH 84 +#define HEIGHT 48 +#define BANKS 6 + +/// Fill types for 2D shapes +enum FillType { + FILL_TRANSPARENT, ///< Transparent with outline + FILL_BLACK, ///< Filled black + FILL_WHITE, ///< Filled white (no outline) +}; + +/** N5110 Class +@brief Library for interfacing with Nokia 5110 LCD display (https://www.sparkfun.com/products/10168) using the hardware SPI on the mbed. +@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). +@brief Can print characters and strings to the display using the included 5x7 font. +@brief The library also implements a screen buffer so that individual pixels on the display (84 x 48) can be set, cleared and read. +@brief The library can print primitive shapes (lines, circles, rectangles) +@brief Acknowledgements to Chris Yan's Nokia_5110 Library. + +@brief Revision 1.3 + +@author Craig A. Evans +@date 7th February 2017 + +@code + +#include "mbed.h" +#include "N5110.h" + +// VCC,SCE,RST,D/C,MOSI,SCLK,LED +//N5110 lcd(p7,p8,p9,p10,p11,p13,p21); // LPC1768 - pwr from GPIO +N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // K64F - pwr from 3V3 + +int main() +{ + // first need to initialise display + lcd.init(); + + while(1) { + + // these are default settings so not strictly needed + lcd.normalMode(); // normal colour mode + lcd.setBrightness(0.5); // put LED backlight on 50% + + lcd.clear(); // clear buffer at start of every loop + // can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display) + lcd.printString("Hello, World!",0,0); + + char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) + // so can display a string of a maximum 14 characters in length + // or create formatted strings - ensure they aren't more than 14 characters long + int temperature = 27; + int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer + // it is important the format specifier ensures the length will fit in the buffer + if (length <= 14) // if string will fit on display (assuming printing at x=0) + lcd.printString(buffer,0,1); // display on screen + + float pressure = 1012.3; // same idea with floats + length = sprintf(buffer,"P = %.2f mb",pressure); + if (length <= 14) + lcd.printString(buffer,0,2); + + // can also print individual characters at specified place + lcd.printChar('X',5,3); + + // draw a line across the display at y = 40 pixels (origin top-left) + for (int i = 0; i < WIDTH; i++) { + lcd.setPixel(i,40); + } + // need to refresh display after setting pixels or writing strings + lcd.refresh(); + wait(5.0); + + // can check status of pixel using getPixel(x,y); + lcd.clear(); // clear buffer + lcd.setPixel(2,2); // set random pixel in buffer + lcd.refresh(); + wait(1.0); + + int pixel_to_test = lcd.getPixel(2,2); + + printf("2,2 Pixel value = %i\n",pixel_to_test); + + if ( pixel_to_test ) { + lcd.printString("2,2 is set",0,4); + } + + // this one shouldn't be set + pixel_to_test = lcd.getPixel(3,3); + + printf("3,3 Pixel value = %i\n",pixel_to_test); + + if ( pixel_to_test == 0 ) { + lcd.printString("3,3 is clear",0,5); + } + + lcd.refresh(); + wait(4.0); + + lcd.clear(); // clear buffer + lcd.inverseMode(); // invert colours + lcd.setBrightness(1.0); // put LED backlight on full + + float array[84]; + + for (int i = 0; i < 84; i++) { + array[i] = 0.5 + 0.5*sin(i*2*3.14/84); + } + + // can also plot graphs - 84 elements only + // values must be in range 0.0 - 1.0 + lcd.plotArray(array); + lcd.refresh(); + wait(5.0); + + lcd.clear(); + lcd.normalMode(); // normal colour mode back + lcd.setBrightness(0.5); // put LED backlight on 50% + + // example of drawing lines + for (int x = 0; x < WIDTH ; x+=10) { + // x0,y0,x1,y1,type 0-white,1-black,2-dotted + lcd.drawLine(0,0,x,HEIGHT,2); + } + lcd.refresh(); // refresh after drawing shapes + wait(5.0); + + + lcd.clear(); + // example of how to draw circles + lcd.drawCircle(WIDTH/2,HEIGHT/2,20,FILL_BLACK); // x,y,radius,black fill + lcd.drawCircle(WIDTH/2,HEIGHT/2,10,FILL_WHITE); // x,y,radius,white fill + lcd.drawCircle(WIDTH/2,HEIGHT/2,30,FILL_TRANSPARENT); // x,y,radius,transparent with outline + lcd.refresh(); // refresh after drawing shapes + wait(5.0); + + lcd.clear(); + // example of how to draw rectangles + // origin x,y,width,height,type + lcd.drawRect(10,10,50,30,FILL_BLACK); // filled black rectangle + lcd.drawRect(15,15,20,10,FILL_WHITE); // filled white rectange (no outline) + lcd.drawRect(2,2,70,40, FILL_TRANSPARENT); // transparent, just outline + lcd.refresh(); // refresh after drawing shapes + wait(5.0); + } +} + +@endcode +*/ +class N5110 +{ +private: +// objects + SPI *_spi; + PwmOut *_led; + DigitalOut *_pwr; + DigitalOut *_sce; + DigitalOut *_rst; + DigitalOut *_dc; + +// variables + unsigned char buffer[84][6]; // screen buffer - the 6 is for the banks - each one is 8 bits; + +public: + /** Create a N5110 object connected to the specified pins + * + * @param pwr Pin connected to Vcc on the LCD display (pin 1) + * @param sce Pin connected to chip enable (pin 3) + * @param rst Pin connected to reset (pin 4) + * @param dc Pin connected to data/command select (pin 5) + * @param mosi Pin connected to data input (MOSI) (pin 6) + * @param sclk Pin connected to serial clock (SCLK) (pin 7) + * @param led Pin connected to LED backlight (must be PWM) (pin 8) + * + */ + N5110(PinName const pwrPin, + PinName const scePin, + PinName const rstPin, + PinName const dcPin, + PinName const mosiPin, + PinName const sclkPin, + PinName const ledPin); + + /** Create a N5110 object connected to the specified pins (Vcc to +3V3) + * + * @param sce Pin connected to chip enable (pin 3) + * @param rst Pin connected to reset (pin 4) + * @param dc Pin connected to data/command select (pin 5) + * @param mosi Pin connected to data input (MOSI) (pin 6) + * @param sclk Pin connected to serial clock (SCLK) (pin 7) + * @param led Pin connected to LED backlight (must be PWM) (pin 8) + * + */ + N5110(PinName const scePin, + PinName const rstPin, + PinName const dcPin, + PinName const mosiPin, + PinName const sclkPin, + PinName const ledPin); + + /** + * Free allocated memory when object goes out of scope + */ + ~N5110(); + + /** Initialise display + * + * Powers up the display and turns on backlight (50% brightness default). + * Sets the display up in horizontal addressing mode and with normal video mode. + */ + void init(); + + /** Turn off + * + * Powers down the display and turns of the backlight. + * Needs to be reinitialised before being re-used. + */ + void turnOff(); + + /** Clear + * + * Clears the screen buffer. + */ + void clear(); + + /** Turn on normal video mode (default) + * Black on white + */ + void normalMode(); + + /** Turn on inverse video mode (default) + * White on black + */ + void inverseMode(); + + /** Set Brightness + * + * Sets brightness of LED backlight. + * @param brightness - float in range 0.0 to 1.0 + */ + void setBrightness(float const brightness); + + /** Print String + * + * Prints a string of characters to the screen buffer. String is cut-off after the 83rd pixel. + * @param x - the column number (0 to 83) + * @param y - the row number (0 to 5) - the display is split into 6 banks - each bank can be considered a row + */ + void printString(char const *str, + unsigned int const x, + unsigned int const y); + + /** Print Character + * + * Sends a character to the screen buffer. Printed at the specified location. Character is cut-off after the 83rd pixel. + * @param c - the character to print. Can print ASCII as so printChar('C'). + * @param x - the column number (0 to 83) + * @param y - the row number (0 to 5) - the display is split into 6 banks - each bank can be considered a row + */ + void printChar(char const c, + unsigned int const x, + unsigned int const y); + + /** Set a Pixel + * + * This function sets a pixel in the screen buffer. + * @param x - the x co-ordinate of the pixel (0 to 83) + * @param y - the y co-ordinate of the pixel (0 to 47) + */ + void setPixel(unsigned int const x, + unsigned int const y); + + /** Clear a Pixel + * + * This function clears pixel in the screen buffer + * @param x - the x co-ordinate of the pixel (0 to 83) + * @param y - the y co-ordinate of the pixel (0 to 47) + */ + void clearPixel(unsigned int const x, + unsigned int const y); + + /** Get a Pixel + * + * This function gets the status of a pixel in the screen buffer. + * @param x - the x co-ordinate of the pixel (0 to 83) + * @param y - the y co-ordinate of the pixel (0 to 47) + * @returns + * 0 - pixel is clear + * 1 - pixel is set + */ + int getPixel(unsigned int const x, + unsigned int const y) const; + + /** Refresh display + * + * This functions sends the screen buffer to the display. + */ + void refresh(); + + /** Randomise buffer + * + * This function fills the buffer with random data. Can be used to test the display. + * A call to refresh() must be made to update the display to reflect the change in pixels. + * The seed is not set and so the generated pattern will probably be the same each time. + * TODO: Randomise the seed - maybe using the noise on the AnalogIn pins. + */ + void randomiseBuffer(); + + /** Plot Array + * + * This function plots a one-dimensional array in the buffer. + * @param array[] - y values of the plot. Values should be normalised in the range 0.0 to 1.0. First 84 plotted. + */ + void plotArray(float const array[]); + + /** Draw Circle + * + * This function draws a circle at the specified origin with specified radius in the screen buffer + * Uses the midpoint circle algorithm. + * @see http://en.wikipedia.org/wiki/Midpoint_circle_algorithm + * @param x0 - x-coordinate of centre + * @param y0 - y-coordinate of centre + * @param radius - radius of circle in pixels + * @param fill - fill-type for the shape + */ + void drawCircle(unsigned int const x0, + unsigned int const y0, + unsigned int const radius, + FillType const fill); + + /** Draw Line + * + * This function draws a line between the specified points using linear interpolation. + * @param x0 - x-coordinate of first point + * @param y0 - y-coordinate of first point + * @param x1 - x-coordinate of last point + * @param y1 - y-coordinate of last point + * @param type - 0 white,1 black,2 dotted + */ + void drawLine(unsigned int const x0, + unsigned int const y0, + unsigned int const x1, + unsigned int const y1, + unsigned int const type); + + /** Draw Rectangle + * + * This function draws a rectangle. + * @param x0 - x-coordinate of origin (top-left) + * @param y0 - y-coordinate of origin (top-left) + * @param width - width of rectangle + * @param height - height of rectangle + * @param fill - fill-type for the shape + */ + void drawRect(unsigned int const x0, + unsigned int const y0, + unsigned int const width, + unsigned int const height, + FillType const fill); + +private: +// methods + void setXYAddress(unsigned int const x, + unsigned int const y); + void initSPI(); + void turnOn(); + void reset(); + void clearRAM(); + void sendCommand(unsigned char command); + void sendData(unsigned char data); +}; + +const unsigned char font5x7[480] = { + 0x00, 0x00, 0x00, 0x00, 0x00,// (space) + 0x00, 0x00, 0x5F, 0x00, 0x00,// ! + 0x00, 0x07, 0x00, 0x07, 0x00,// " + 0x14, 0x7F, 0x14, 0x7F, 0x14,// # + 0x24, 0x2A, 0x7F, 0x2A, 0x12,// $ + 0x23, 0x13, 0x08, 0x64, 0x62,// % + 0x36, 0x49, 0x55, 0x22, 0x50,// & + 0x00, 0x05, 0x03, 0x00, 0x00,// ' + 0x00, 0x1C, 0x22, 0x41, 0x00,// ( + 0x00, 0x41, 0x22, 0x1C, 0x00,// ) + 0x08, 0x2A, 0x1C, 0x2A, 0x08,// * + 0x08, 0x08, 0x3E, 0x08, 0x08,// + + 0x00, 0x50, 0x30, 0x00, 0x00,// , + 0x08, 0x08, 0x08, 0x08, 0x08,// - + 0x00, 0x60, 0x60, 0x00, 0x00,// . + 0x20, 0x10, 0x08, 0x04, 0x02,// / + 0x3E, 0x51, 0x49, 0x45, 0x3E,// 0 + 0x00, 0x42, 0x7F, 0x40, 0x00,// 1 + 0x42, 0x61, 0x51, 0x49, 0x46,// 2 + 0x21, 0x41, 0x45, 0x4B, 0x31,// 3 + 0x18, 0x14, 0x12, 0x7F, 0x10,// 4 + 0x27, 0x45, 0x45, 0x45, 0x39,// 5 + 0x3C, 0x4A, 0x49, 0x49, 0x30,// 6 + 0x01, 0x71, 0x09, 0x05, 0x03,// 7 + 0x36, 0x49, 0x49, 0x49, 0x36,// 8 + 0x06, 0x49, 0x49, 0x29, 0x1E,// 9 + 0x00, 0x36, 0x36, 0x00, 0x00,// : + 0x00, 0x56, 0x36, 0x00, 0x00,// ; + 0x00, 0x08, 0x14, 0x22, 0x41,// < + 0x14, 0x14, 0x14, 0x14, 0x14,// = + 0x41, 0x22, 0x14, 0x08, 0x00,// > + 0x02, 0x01, 0x51, 0x09, 0x06,// ? + 0x32, 0x49, 0x79, 0x41, 0x3E,// @ + 0x7E, 0x11, 0x11, 0x11, 0x7E,// A + 0x7F, 0x49, 0x49, 0x49, 0x36,// B + 0x3E, 0x41, 0x41, 0x41, 0x22,// C + 0x7F, 0x41, 0x41, 0x22, 0x1C,// D + 0x7F, 0x49, 0x49, 0x49, 0x41,// E + 0x7F, 0x09, 0x09, 0x01, 0x01,// F + 0x3E, 0x41, 0x41, 0x51, 0x32,// G + 0x7F, 0x08, 0x08, 0x08, 0x7F,// H + 0x00, 0x41, 0x7F, 0x41, 0x00,// I + 0x20, 0x40, 0x41, 0x3F, 0x01,// J + 0x7F, 0x08, 0x14, 0x22, 0x41,// K + 0x7F, 0x40, 0x40, 0x40, 0x40,// L + 0x7F, 0x02, 0x04, 0x02, 0x7F,// M + 0x7F, 0x04, 0x08, 0x10, 0x7F,// N + 0x3E, 0x41, 0x41, 0x41, 0x3E,// O + 0x7F, 0x09, 0x09, 0x09, 0x06,// P + 0x3E, 0x41, 0x51, 0x21, 0x5E,// Q + 0x7F, 0x09, 0x19, 0x29, 0x46,// R + 0x46, 0x49, 0x49, 0x49, 0x31,// S + 0x01, 0x01, 0x7F, 0x01, 0x01,// T + 0x3F, 0x40, 0x40, 0x40, 0x3F,// U + 0x1F, 0x20, 0x40, 0x20, 0x1F,// V + 0x7F, 0x20, 0x18, 0x20, 0x7F,// W + 0x63, 0x14, 0x08, 0x14, 0x63,// X + 0x03, 0x04, 0x78, 0x04, 0x03,// Y + 0x61, 0x51, 0x49, 0x45, 0x43,// Z + 0x00, 0x00, 0x7F, 0x41, 0x41,// [ + 0x02, 0x04, 0x08, 0x10, 0x20,// "\" + 0x41, 0x41, 0x7F, 0x00, 0x00,// ] + 0x04, 0x02, 0x01, 0x02, 0x04,// ^ + 0x40, 0x40, 0x40, 0x40, 0x40,// _ + 0x00, 0x01, 0x02, 0x04, 0x00,// ` + 0x20, 0x54, 0x54, 0x54, 0x78,// a + 0x7F, 0x48, 0x44, 0x44, 0x38,// b + 0x38, 0x44, 0x44, 0x44, 0x20,// c + 0x38, 0x44, 0x44, 0x48, 0x7F,// d + 0x38, 0x54, 0x54, 0x54, 0x18,// e + 0x08, 0x7E, 0x09, 0x01, 0x02,// f + 0x08, 0x14, 0x54, 0x54, 0x3C,// g + 0x7F, 0x08, 0x04, 0x04, 0x78,// h + 0x00, 0x44, 0x7D, 0x40, 0x00,// i + 0x20, 0x40, 0x44, 0x3D, 0x00,// j + 0x00, 0x7F, 0x10, 0x28, 0x44,// k + 0x00, 0x41, 0x7F, 0x40, 0x00,// l + 0x7C, 0x04, 0x18, 0x04, 0x78,// m + 0x7C, 0x08, 0x04, 0x04, 0x78,// n + 0x38, 0x44, 0x44, 0x44, 0x38,// o + 0x7C, 0x14, 0x14, 0x14, 0x08,// p + 0x08, 0x14, 0x14, 0x18, 0x7C,// q + 0x7C, 0x08, 0x04, 0x04, 0x08,// r + 0x48, 0x54, 0x54, 0x54, 0x20,// s + 0x04, 0x3F, 0x44, 0x40, 0x20,// t + 0x3C, 0x40, 0x40, 0x20, 0x7C,// u + 0x1C, 0x20, 0x40, 0x20, 0x1C,// v + 0x3C, 0x40, 0x30, 0x40, 0x3C,// w + 0x44, 0x28, 0x10, 0x28, 0x44,// x + 0x0C, 0x50, 0x50, 0x50, 0x3C,// y + 0x44, 0x64, 0x54, 0x4C, 0x44,// z + 0x00, 0x08, 0x36, 0x41, 0x00,// { + 0x00, 0x00, 0x7F, 0x00, 0x00,// | + 0x00, 0x41, 0x36, 0x08, 0x00,// } + 0x08, 0x08, 0x2A, 0x1C, 0x08,// -> + 0x08, 0x1C, 0x2A, 0x08, 0x08 // <- +}; + +#endif \ No newline at end of file