Carlos Torres / pcd8544_drv

PCD8544 Driver for an LCD with an PCD8544 controller (e.g. Nokia 3310, 3390)

Dependents:   PCD8544_LCD

pcd8544_drv.hpp@0:358e68b0535a, 2011-01-02 (annotated)

Committer:
carlosftm
Date:
Sun Jan 02 11:50:35 2011 +0000
Revision:
0:358e68b0535a
Child:
1:9948e71af151
Library with Text support only (14x6 characters)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
carlosftm 0:358e68b0535a 1 /**
carlosftm 0:358e68b0535a 2 * @file pcd8544_drv.hpp
carlosftm 0:358e68b0535a 3 * PCD8544 Driver for an LCD with an PCD8544 controller.
carlosftm 0:358e68b0535a 4 * Note: Text mode supported only.
carlosftm 0:358e68b0535a 5 *
carlosftm 0:358e68b0535a 6 * Created on: 12/31/2010 at 19:48
carlosftm 0:358e68b0535a 7 * @author: CarlosFTM
carlosftm 0:358e68b0535a 8 */
carlosftm 0:358e68b0535a 9
carlosftm 0:358e68b0535a 10 #include "mbed.h"
carlosftm 0:358e68b0535a 11 #include "ascii_table.hpp"
carlosftm 0:358e68b0535a 12
carlosftm 0:358e68b0535a 13 /* Number of pixels on the LCD */
carlosftm 0:358e68b0535a 14 #define MAX_PIX_X (84)
carlosftm 0:358e68b0535a 15 #define MAX_PIX_Y (48)
carlosftm 0:358e68b0535a 16
carlosftm 0:358e68b0535a 17 /* Size of a caracter displayed on the LCD */
carlosftm 0:358e68b0535a 18 #define CHAR_PIX_X (6)
carlosftm 0:358e68b0535a 19 #define CHAR_PIX_Y (8)
carlosftm 0:358e68b0535a 20
carlosftm 0:358e68b0535a 21 /* Maximum number of character displayed on the LCD*/
carlosftm 0:358e68b0535a 22 #define MAX_CHAR_X (MAX_PIX_X / CHAR_PIX_X)
carlosftm 0:358e68b0535a 23 #define MAX_CHAR_Y (MAX_PIX_Y / CHAR_PIX_Y)
carlosftm 0:358e68b0535a 24
carlosftm 0:358e68b0535a 25 /* Timming constants*/
carlosftm 0:358e68b0535a 26 #define TICK (1) // Clock pulse width in useg
carlosftm 0:358e68b0535a 27 #define RESET_TICKS (8) // number of ticks for reset
carlosftm 0:358e68b0535a 28
carlosftm 0:358e68b0535a 29 /* Digital output assignament*/
carlosftm 0:358e68b0535a 30 #define pin_sclk (p21)
carlosftm 0:358e68b0535a 31 #define pin_mosi (p22)
carlosftm 0:358e68b0535a 32 #define pin_dc (p23)
carlosftm 0:358e68b0535a 33 #define pin_sce (p24)
carlosftm 0:358e68b0535a 34 #define pin_reset (p25)
carlosftm 0:358e68b0535a 35
carlosftm 0:358e68b0535a 36 /* Digital output logicla level*/
carlosftm 0:358e68b0535a 37 #define HIGH (1)
carlosftm 0:358e68b0535a 38 #define LOW (0)
carlosftm 0:358e68b0535a 39
carlosftm 0:358e68b0535a 40 /* Display control command */
carlosftm 0:358e68b0535a 41 #define DISPLAY_BLANK (0x08)
carlosftm 0:358e68b0535a 42 #define NORMAL_MODE (0x0C)
carlosftm 0:358e68b0535a 43 #define ALL_SEG_ON (0x09)
carlosftm 0:358e68b0535a 44 #define INVERSE_MODE (0x0D)
carlosftm 0:358e68b0535a 45
carlosftm 0:358e68b0535a 46 #define SET_ADDRES_X (0x80)
carlosftm 0:358e68b0535a 47 #define SET_ADDRES_Y (0x40)
carlosftm 0:358e68b0535a 48
carlosftm 0:358e68b0535a 49
carlosftm 0:358e68b0535a 50 /** Creates an interface to the PCD8544 LCD controller
carlosftm 0:358e68b0535a 51 *
carlosftm 0:358e68b0535a 52 */
carlosftm 0:358e68b0535a 53 class pcd8544
carlosftm 0:358e68b0535a 54 {
carlosftm 0:358e68b0535a 55 private:
carlosftm 0:358e68b0535a 56 DigitalOut _sclk;
carlosftm 0:358e68b0535a 57 DigitalOut _mosi;
carlosftm 0:358e68b0535a 58 DigitalOut _dc;
carlosftm 0:358e68b0535a 59 DigitalOut _sce;
carlosftm 0:358e68b0535a 60 DigitalOut _reset;
carlosftm 0:358e68b0535a 61 /** Sends a raw byte to the LCD controller
carlosftm 0:358e68b0535a 62 *
carlosftm 0:358e68b0535a 63 * @param byte to send, boolean to indicate if it is a coomand (Command = TRUE / Data = FALSE).
carlosftm 0:358e68b0535a 64 */
carlosftm 0:358e68b0535a 65 void sendByte(char byte, bool command);
carlosftm 0:358e68b0535a 66
carlosftm 0:358e68b0535a 67 /** Generates a clock tick
carlosftm 0:358e68b0535a 68 *
carlosftm 0:358e68b0535a 69 * @param pulse width in useg
carlosftm 0:358e68b0535a 70 */
carlosftm 0:358e68b0535a 71 inline void clockTick(unsigned short useg);
carlosftm 0:358e68b0535a 72
carlosftm 0:358e68b0535a 73 public:
carlosftm 0:358e68b0535a 74
carlosftm 0:358e68b0535a 75 /** Creates an interface to the LCD
carlosftm 0:358e68b0535a 76 *
carlosftm 0:358e68b0535a 77 * @param PinName for SCLK
carlosftm 0:358e68b0535a 78 * @param PinName for MOSI
carlosftm 0:358e68b0535a 79 * @param PinName for DC
carlosftm 0:358e68b0535a 80 * @param PinName for SCE
carlosftm 0:358e68b0535a 81 * @param PinName for RESET
carlosftm 0:358e68b0535a 82 */
carlosftm 0:358e68b0535a 83 pcd8544(PinName pin_sclk, PinName pin_mosi, PinName pin_dc, PinName pin_sce, PinName pin_reset);
carlosftm 0:358e68b0535a 84
carlosftm 0:358e68b0535a 85 /** Writes data into the LCD controller
carlosftm 0:358e68b0535a 86 *
carlosftm 0:358e68b0535a 87 * @param data to be transmited in byte
carlosftm 0:358e68b0535a 88 */
carlosftm 0:358e68b0535a 89 void writeData(char data);
carlosftm 0:358e68b0535a 90
carlosftm 0:358e68b0535a 91 /** Writes a command into the LCD controller
carlosftm 0:358e68b0535a 92 *
carlosftm 0:358e68b0535a 93 * @param command in byte
carlosftm 0:358e68b0535a 94 */
carlosftm 0:358e68b0535a 95 void writeCmd(char cmd);
carlosftm 0:358e68b0535a 96
carlosftm 0:358e68b0535a 97 /** Writes a character into the LCD controller
carlosftm 0:358e68b0535a 98 *
carlosftm 0:358e68b0535a 99 * @param Character to be written in byte
carlosftm 0:358e68b0535a 100 */
carlosftm 0:358e68b0535a 101 void writeChar(char character);
carlosftm 0:358e68b0535a 102
carlosftm 0:358e68b0535a 103 /** Writes a string into LCD
carlosftm 0:358e68b0535a 104 *
carlosftm 0:358e68b0535a 105 * @param pointer to a character string
carlosftm 0:358e68b0535a 106 */
carlosftm 0:358e68b0535a 107 void writeString(char* character);
carlosftm 0:358e68b0535a 108
carlosftm 0:358e68b0535a 109 /** Reset the LCD
carlosftm 0:358e68b0535a 110 *
carlosftm 0:358e68b0535a 111 * @param none
carlosftm 0:358e68b0535a 112 */
carlosftm 0:358e68b0535a 113 void resetLCD(void);
carlosftm 0:358e68b0535a 114
carlosftm 0:358e68b0535a 115 /** Initialize the LCD
carlosftm 0:358e68b0535a 116 *
carlosftm 0:358e68b0535a 117 * @param none
carlosftm 0:358e68b0535a 118 */
carlosftm 0:358e68b0535a 119 void initLCD(void);
carlosftm 0:358e68b0535a 120
carlosftm 0:358e68b0535a 121 /** Clear the LCD screen
carlosftm 0:358e68b0535a 122 *
carlosftm 0:358e68b0535a 123 * @param none
carlosftm 0:358e68b0535a 124 */
carlosftm 0:358e68b0535a 125 void clearLCD(void);
carlosftm 0:358e68b0535a 126
carlosftm 0:358e68b0535a 127 /** Set the cursor to a specific position
carlosftm 0:358e68b0535a 128 *
carlosftm 0:358e68b0535a 129 * @param X and Y position in characters
carlosftm 0:358e68b0535a 130 */
carlosftm 0:358e68b0535a 131 void setCursorXY(char x, char y);
carlosftm 0:358e68b0535a 132 };