Carlos Torres / pcd8544_drv

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

Dependents:   PCD8544_LCD

pcd8544_drv.hpp@1:9948e71af151, 2011-01-02 (annotated)

Committer:
carlosftm
Date:
Sun Jan 02 11:56:06 2011 +0000
Revision:
1:9948e71af151
Parent:
0:358e68b0535a 
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 1:9948e71af151 9 #ifndef __PCD8544_DRV_HPP__
carlosftm 1:9948e71af151 10 #define __PCD8544_DRV_HPP__
carlosftm 0:358e68b0535a 11
carlosftm 0:358e68b0535a 12 #include "mbed.h"
carlosftm 0:358e68b0535a 13 #include "ascii_table.hpp"
carlosftm 0:358e68b0535a 14
carlosftm 0:358e68b0535a 15 /* Number of pixels on the LCD */
carlosftm 0:358e68b0535a 16 #define MAX_PIX_X (84)
carlosftm 0:358e68b0535a 17 #define MAX_PIX_Y (48)
carlosftm 0:358e68b0535a 18
carlosftm 0:358e68b0535a 19 /* Size of a caracter displayed on the LCD */
carlosftm 0:358e68b0535a 20 #define CHAR_PIX_X (6)
carlosftm 0:358e68b0535a 21 #define CHAR_PIX_Y (8)
carlosftm 0:358e68b0535a 22
carlosftm 0:358e68b0535a 23 /* Maximum number of character displayed on the LCD*/
carlosftm 0:358e68b0535a 24 #define MAX_CHAR_X (MAX_PIX_X / CHAR_PIX_X)
carlosftm 0:358e68b0535a 25 #define MAX_CHAR_Y (MAX_PIX_Y / CHAR_PIX_Y)
carlosftm 0:358e68b0535a 26
carlosftm 0:358e68b0535a 27 /* Timming constants*/
carlosftm 0:358e68b0535a 28 #define TICK (1) // Clock pulse width in useg
carlosftm 0:358e68b0535a 29 #define RESET_TICKS (8) // number of ticks for reset
carlosftm 0:358e68b0535a 30
carlosftm 0:358e68b0535a 31 /* Digital output assignament*/
carlosftm 0:358e68b0535a 32 #define pin_sclk (p21)
carlosftm 0:358e68b0535a 33 #define pin_mosi (p22)
carlosftm 0:358e68b0535a 34 #define pin_dc (p23)
carlosftm 0:358e68b0535a 35 #define pin_sce (p24)
carlosftm 0:358e68b0535a 36 #define pin_reset (p25)
carlosftm 0:358e68b0535a 37
carlosftm 0:358e68b0535a 38 /* Digital output logicla level*/
carlosftm 0:358e68b0535a 39 #define HIGH (1)
carlosftm 0:358e68b0535a 40 #define LOW (0)
carlosftm 0:358e68b0535a 41
carlosftm 0:358e68b0535a 42 /* Display control command */
carlosftm 0:358e68b0535a 43 #define DISPLAY_BLANK (0x08)
carlosftm 0:358e68b0535a 44 #define NORMAL_MODE (0x0C)
carlosftm 0:358e68b0535a 45 #define ALL_SEG_ON (0x09)
carlosftm 0:358e68b0535a 46 #define INVERSE_MODE (0x0D)
carlosftm 0:358e68b0535a 47
carlosftm 0:358e68b0535a 48 #define SET_ADDRES_X (0x80)
carlosftm 0:358e68b0535a 49 #define SET_ADDRES_Y (0x40)
carlosftm 0:358e68b0535a 50
carlosftm 0:358e68b0535a 51
carlosftm 0:358e68b0535a 52 /** Creates an interface to the PCD8544 LCD controller
carlosftm 0:358e68b0535a 53 *
carlosftm 0:358e68b0535a 54 */
carlosftm 0:358e68b0535a 55 class pcd8544
carlosftm 0:358e68b0535a 56 {
carlosftm 0:358e68b0535a 57 private:
carlosftm 0:358e68b0535a 58 DigitalOut _sclk;
carlosftm 0:358e68b0535a 59 DigitalOut _mosi;
carlosftm 0:358e68b0535a 60 DigitalOut _dc;
carlosftm 0:358e68b0535a 61 DigitalOut _sce;
carlosftm 0:358e68b0535a 62 DigitalOut _reset;
carlosftm 0:358e68b0535a 63 /** Sends a raw byte to the LCD controller
carlosftm 0:358e68b0535a 64 *
carlosftm 0:358e68b0535a 65 * @param byte to send, boolean to indicate if it is a coomand (Command = TRUE / Data = FALSE).
carlosftm 0:358e68b0535a 66 */
carlosftm 0:358e68b0535a 67 void sendByte(char byte, bool command);
carlosftm 0:358e68b0535a 68
carlosftm 0:358e68b0535a 69 /** Generates a clock tick
carlosftm 0:358e68b0535a 70 *
carlosftm 0:358e68b0535a 71 * @param pulse width in useg
carlosftm 0:358e68b0535a 72 */
carlosftm 0:358e68b0535a 73 inline void clockTick(unsigned short useg);
carlosftm 0:358e68b0535a 74
carlosftm 0:358e68b0535a 75 public:
carlosftm 0:358e68b0535a 76
carlosftm 0:358e68b0535a 77 /** Creates an interface to the LCD
carlosftm 0:358e68b0535a 78 *
carlosftm 0:358e68b0535a 79 * @param PinName for SCLK
carlosftm 0:358e68b0535a 80 * @param PinName for MOSI
carlosftm 0:358e68b0535a 81 * @param PinName for DC
carlosftm 0:358e68b0535a 82 * @param PinName for SCE
carlosftm 0:358e68b0535a 83 * @param PinName for RESET
carlosftm 0:358e68b0535a 84 */
carlosftm 0:358e68b0535a 85 pcd8544(PinName pin_sclk, PinName pin_mosi, PinName pin_dc, PinName pin_sce, PinName pin_reset);
carlosftm 0:358e68b0535a 86
carlosftm 0:358e68b0535a 87 /** Writes data into the LCD controller
carlosftm 0:358e68b0535a 88 *
carlosftm 0:358e68b0535a 89 * @param data to be transmited in byte
carlosftm 0:358e68b0535a 90 */
carlosftm 0:358e68b0535a 91 void writeData(char data);
carlosftm 0:358e68b0535a 92
carlosftm 0:358e68b0535a 93 /** Writes a command into the LCD controller
carlosftm 0:358e68b0535a 94 *
carlosftm 0:358e68b0535a 95 * @param command in byte
carlosftm 0:358e68b0535a 96 */
carlosftm 0:358e68b0535a 97 void writeCmd(char cmd);
carlosftm 0:358e68b0535a 98
carlosftm 0:358e68b0535a 99 /** Writes a character into the LCD controller
carlosftm 0:358e68b0535a 100 *
carlosftm 0:358e68b0535a 101 * @param Character to be written in byte
carlosftm 0:358e68b0535a 102 */
carlosftm 0:358e68b0535a 103 void writeChar(char character);
carlosftm 0:358e68b0535a 104
carlosftm 0:358e68b0535a 105 /** Writes a string into LCD
carlosftm 0:358e68b0535a 106 *
carlosftm 0:358e68b0535a 107 * @param pointer to a character string
carlosftm 0:358e68b0535a 108 */
carlosftm 0:358e68b0535a 109 void writeString(char* character);
carlosftm 0:358e68b0535a 110
carlosftm 0:358e68b0535a 111 /** Reset the LCD
carlosftm 0:358e68b0535a 112 *
carlosftm 0:358e68b0535a 113 * @param none
carlosftm 0:358e68b0535a 114 */
carlosftm 0:358e68b0535a 115 void resetLCD(void);
carlosftm 0:358e68b0535a 116
carlosftm 0:358e68b0535a 117 /** Initialize the LCD
carlosftm 0:358e68b0535a 118 *
carlosftm 0:358e68b0535a 119 * @param none
carlosftm 0:358e68b0535a 120 */
carlosftm 0:358e68b0535a 121 void initLCD(void);
carlosftm 0:358e68b0535a 122
carlosftm 0:358e68b0535a 123 /** Clear the LCD screen
carlosftm 0:358e68b0535a 124 *
carlosftm 0:358e68b0535a 125 * @param none
carlosftm 0:358e68b0535a 126 */
carlosftm 0:358e68b0535a 127 void clearLCD(void);
carlosftm 0:358e68b0535a 128
carlosftm 0:358e68b0535a 129 /** Set the cursor to a specific position
carlosftm 0:358e68b0535a 130 *
carlosftm 0:358e68b0535a 131 * @param X and Y position in characters
carlosftm 0:358e68b0535a 132 */
carlosftm 0:358e68b0535a 133 void setCursorXY(char x, char y);
carlosftm 1:9948e71af151 134 };
carlosftm 1:9948e71af151 135 #endif