Laurens Tromp / charLCD

General purpose character LCD library. I found the TextLCD library had too many constraints and it didn\\\\\\\'t supply acces to all functions in the HD44780 chipset, so i decided to write my own character lcd library.

charLcd.h@2:18f6402fd025, 2011-04-07 (annotated)

Committer:
lktromp
Date:
Thu Apr 07 11:29:55 2011 +0000
Revision:
2:18f6402fd025
Parent:
1:1349bedd5793 
Little bit further

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lktromp 1:1349bedd5793 1 /***********************************************************************************
lktromp 1:1349bedd5793 2 Filename: CharacterLCD.h
lktromp 1:1349bedd5793 3
lktromp 1:1349bedd5793 4
lktromp 1:1349bedd5793 5 ***********************************************************************************/
lktromp 1:1349bedd5793 6 #ifndef CHARLCD_H
lktromp 1:1349bedd5793 7 #define CHARLCD_H
lktromp 1:1349bedd5793 8 #include "mbed.h"
lktromp 1:1349bedd5793 9
lktromp 1:1349bedd5793 10 //move this typedef to project specific datatype header file
lktromp 1:1349bedd5793 11 typedef unsigned char uint8;
lktromp 1:1349bedd5793 12
lktromp 1:1349bedd5793 13
lktromp 1:1349bedd5793 14
lktromp 1:1349bedd5793 15 class charLcd
lktromp 1:1349bedd5793 16 { public:
lktromp 1:1349bedd5793 17
lktromp 1:1349bedd5793 18 /** LCD panel format */
lktromp 1:1349bedd5793 19 enum LCDType {
lktromp 1:1349bedd5793 20 LCD16x2 /**< 16x2 LCD panel (default) */
lktromp 1:1349bedd5793 21 , LCD16x2B /**< 16x2 LCD panel alternate addressing */
lktromp 1:1349bedd5793 22 , LCD20x2 /**< 20x2 LCD panel */
lktromp 1:1349bedd5793 23 , LCD20x4 /**< 20x4 LCD panel */
lktromp 1:1349bedd5793 24 };
lktromp 1:1349bedd5793 25
lktromp 2:18f6402fd025 26 enum t_charlcd_entry_mode {
lktromp 2:18f6402fd025 27 shift_inc = 4,
lktromp 2:18f6402fd025 28 noshift_inc = 3,
lktromp 2:18f6402fd025 29 shift_dec = 2,
lktromp 2:18f6402fd025 30 noshift_dec = 1,
lktromp 2:18f6402fd025 31 };
lktromp 2:18f6402fd025 32
lktromp 2:18f6402fd025 33
lktromp 1:1349bedd5793 34 //constructor for 4-bit lcd control
lktromp 1:1349bedd5793 35 charLcd(PinName rs, PinName rw, PinName en, PinName d7, PinName d6, PinName d5, PinName d4, LCDType type = LCD16x2);
lktromp 1:1349bedd5793 36 //constructor for 8-bit lcd control
lktromp 1:1349bedd5793 37 charLcd(PinName rs, PinName rw, PinName en, PinName d7, PinName d6, PinName d5, PinName d4, PinName d3, PinName d2,
lktromp 1:1349bedd5793 38 PinName d1, PinName d0, LCDType type = LCD16x2);
lktromp 1:1349bedd5793 39
lktromp 1:1349bedd5793 40 void charLcdResetLCD(void);
lktromp 1:1349bedd5793 41 void charLcdClear (void);
lktromp 1:1349bedd5793 42 void charLcdReturnHome();
lktromp 2:18f6402fd025 43 //void charLcdEntryMode(uint8 increment, uint8 shift);
lktromp 2:18f6402fd025 44 void charLcdEntryMode(t_charlcd_entry_mode entrymode);
lktromp 1:1349bedd5793 45 void charLcdDisplayOn(uint8 on);
lktromp 1:1349bedd5793 46 void charLcdCursor(uint8 cursor, uint8 blink);
lktromp 1:1349bedd5793 47 void charLcdShift(uint8 left, uint8 cursor);
lktromp 1:1349bedd5793 48 void charLcdFunctionSet(uint8 dots, uint8 lines, uint8 bits);
lktromp 1:1349bedd5793 49
lktromp 1:1349bedd5793 50 private:
lktromp 1:1349bedd5793 51 void charLcdSetCGRAMaddress(uint8 adr);
lktromp 1:1349bedd5793 52 void charLcdSetDDRAMaddress(uint8 address);
lktromp 1:1349bedd5793 53 uint8 charLcdReadBusyFlag();
lktromp 1:1349bedd5793 54 void charLcdWriteData(uint8 dat);
lktromp 1:1349bedd5793 55 uint8 charLcdReadData();
lktromp 1:1349bedd5793 56 void charLcdSendCommand(uint8 cmd);
lktromp 1:1349bedd5793 57 void charLcdWriteByte(uint8 byte);
lktromp 1:1349bedd5793 58
lktromp 1:1349bedd5793 59 uint8 LcdStatus;
lktromp 1:1349bedd5793 60 uint8 LcdCustomChar[8];
lktromp 1:1349bedd5793 61
lktromp 1:1349bedd5793 62 //LCD Control pins
lktromp 1:1349bedd5793 63 DigitalOut cl_rs;
lktromp 1:1349bedd5793 64 DigitalOut cl_rw;
lktromp 1:1349bedd5793 65 DigitalOut cl_en;
lktromp 1:1349bedd5793 66
lktromp 1:1349bedd5793 67 //LCD Data pins
lktromp 1:1349bedd5793 68 //DigitalInOut cl_d7;
lktromp 1:1349bedd5793 69 //DigitalInOut cl_d6;
lktromp 1:1349bedd5793 70 //DigitalInOut cl_d5;
lktromp 1:1349bedd5793 71 //DigitalInOut cl_d4;
lktromp 1:1349bedd5793 72 //DigitalInOut cl_d3;
lktromp 1:1349bedd5793 73 //DigitalInOut cl_d2;
lktromp 1:1349bedd5793 74 //DigitalInOut cl_d1;
lktromp 1:1349bedd5793 75 //DigitalInOut cl_d0;
lktromp 1:1349bedd5793 76
lktromp 1:1349bedd5793 77 //LCD Data port
lktromp 1:1349bedd5793 78 //PortInOut charLcdData;
lktromp 1:1349bedd5793 79
lktromp 1:1349bedd5793 80 //LCD Data bus
lktromp 1:1349bedd5793 81 BusInOut cl_charLcdData;
lktromp 2:18f6402fd025 82
lktromp 2:18f6402fd025 83
lktromp 2:18f6402fd025 84 enum t_charlcd_function_set {NO_WIND = 4, NORTH_WIND = 3, SOUTH_WIND = 2, EAST_WIND = 1, WEST_WIND = 0};
lktromp 1:1349bedd5793 85
lktromp 1:1349bedd5793 86 };
lktromp 1:1349bedd5793 87
lktromp 1:1349bedd5793 88
lktromp 1:1349bedd5793 89
lktromp 1:1349bedd5793 90 /**********************************************************************************/
lktromp 1:1349bedd5793 91 #endif //CHARLCD_H