XJEL2645 (19/20)
Yang Zhenye 201199680
Dependencies: mbed
Diff: N5110/N5110.h
- Revision:
- 5:fcad75e9b9e1
- Parent:
- 0:ac2868313b41
diff -r eb8dca1dc341 -r fcad75e9b9e1 N5110/N5110.h
--- a/N5110/N5110.h Wed May 13 14:55:07 2020 +0000
+++ b/N5110/N5110.h Thu May 14 14:13:03 2020 +0000
@@ -1,44 +1,20 @@
#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).
@@ -46,36 +22,59 @@
@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"
-
+
+// rows,cols
+int sprite[8][5] = {
+ { 0,0,1,0,0 },
+ { 0,1,1,1,0 },
+ { 0,0,1,0,0 },
+ { 0,1,1,1,0 },
+ { 1,1,1,1,1 },
+ { 1,1,1,1,1 },
+ { 1,1,0,1,1 },
+ { 1,1,0,1,1 },
+};
+
// 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
-
+N5110 lcd(p8,p9,p10,p11,p13,p21); // LPC1768 - powered from +3V3 - JP1 in 2/3 position
+//N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // K64F - pwr from 3V3
+
int main()
{
// first need to initialise display
lcd.init();
-
+
+ // change set contrast in range 0.0 to 1.0
+ // 0.4 appears to be a good starting point
+ lcd.setContrast(0.4);
+
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();
+ // x origin, y origin, rows, cols, sprite
+ lcd.drawSprite(20,6,8,5,(int *)sprite);
+ lcd.refresh();
+ wait(5.0);
+
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
@@ -84,69 +83,67 @@
// 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);
+ lcd.setPixel(i,40,true);
}
// 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.setPixel(2,2,true); // 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
+ lcd.setPixel(3,3,false); // clear random pixel in buffer
+ lcd.refresh();
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
@@ -154,8 +151,8 @@
}
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
@@ -163,18 +160,20 @@
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.drawRect(2,2,70,40,FILL_TRANSPARENT); // transparent, just outline
lcd.refresh(); // refresh after drawing shapes
wait(5.0);
+
}
}
-
+
+
@endcode
*/
class N5110
@@ -187,10 +186,10 @@
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
*
@@ -210,7 +209,7 @@
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)
@@ -227,49 +226,54 @@
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();
-
+
+ /** Set screen constrast
+ * @param constrast - float in range 0.0 to 1.0 (0.40 to 0.60 is usually a good value)
+ */
+ void setContrast(float contrast);
+
/** 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.
@@ -279,7 +283,7 @@
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.
@@ -290,25 +294,35 @@
void printChar(char const c,
unsigned int const x,
unsigned int const y);
-
- /** Set a Pixel
+
+ /**
+ * @brief 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)
+ * @param x The x co-ordinate of the pixel (0 to 83)
+ * @param y The y co-ordinate of the pixel (0 to 47)
+ * @param state The state of the pixel [true=black (default), false=white]
+ *
+ * @details This function sets the state of a pixel in the screen buffer.
+ * The third parameter can be omitted,
*/
void setPixel(unsigned int const x,
- unsigned int const y);
-
- /** Clear a Pixel
+ unsigned int const y,
+ bool const state = true);
+
+ /**
+ * @brief 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)
+ *
+ * @details This function clears pixel in the screen buffer
+ *
+ * @deprecated Use setPixel(x, y, false) instead
*/
void clearPixel(unsigned int const x,
- unsigned int const y);
-
+ unsigned int const y)
+ __attribute__((deprecated("Use setPixel(x,y,false) instead")));
+
/** Get a Pixel
*
* This function gets the status of a pixel in the screen buffer.
@@ -320,13 +334,13 @@
*/
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.
@@ -335,14 +349,14 @@
* 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
@@ -357,7 +371,7 @@
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.
@@ -372,7 +386,7 @@
unsigned int const x1,
unsigned int const y1,
unsigned int const type);
-
+
/** Draw Rectangle
*
* This function draws a rectangle.
@@ -387,7 +401,23 @@
unsigned int const width,
unsigned int const height,
FillType const fill);
-
+
+ /** Draw Sprite
+ *
+ * This function draws a sprite as defined in a 2D array
+ * @param x0 - x-coordinate of origin (top-left)
+ * @param y0 - y-coordinate of origin (top-left)
+ * @param nrows - number of rows in sprite
+ * @param ncols - number of columns in sprite
+ * @param sprite - 2D array representing the sprite
+ */
+ void drawSprite(int x0,
+ int y0,
+ int nrows,
+ int ncols,
+ int *sprite);
+
+
private:
// methods
void setXYAddress(unsigned int const x,
@@ -398,8 +428,10 @@
void clearRAM();
void sendCommand(unsigned char command);
void sendData(unsigned char data);
+ void setTempCoefficient(char tc); // 0 to 3
+ void setBias(char bias); // 0 to 7
};
-
+
const unsigned char font5x7[480] = {
0x00, 0x00, 0x00, 0x00, 0x00,// (space)
0x00, 0x00, 0x5F, 0x00, 0x00,// !
@@ -498,5 +530,6 @@
0x08, 0x08, 0x2A, 0x1C, 0x08,// ->
0x08, 0x1C, 0x2A, 0x08, 0x08 // <-
};
-
-#endif
\ No newline at end of file
+
+#endif
+
\ No newline at end of file