butterflymp3/docs/_l_c_d__driver_8h_source.html

00001 //*****************************************************************************
00002 //
00003 //  File........: LCD_Driver.h
00004 //
00005 //  Author(s)...: ATMEL Norway
00006 //
00007 //  Target(s)...: ATmega169
00008 //
00009 //  Description.: Defines and prototypes for LCD_Driver.c
00010 //
00011 //  Revisions...: 1.0
00012 //
00013 //  YYYYMMDD - VER. - COMMENT                                       - SIGN.
00014 //
00015 //  20020606 - 0.10 - File created                                  - RM
00016 //  20021010 - 1.0  - Clean up                                      - JLL
00017 //  20031009          port to avr-gcc/avr-libc                      - M.Thomas
00018 //
00019 //*****************************************************************************
00020
00021
00022 /************************************************************************/
00023 // Definitions
00024 /************************************************************************/
00025 #define LCD_INITIAL_CONTRAST    0x0F
00026 #define LCD_TIMER_SEED              3
00027 #define LCD_FLASH_SEED          10
00028 #define LCD_REGISTER_COUNT      20
00029 #define TEXTBUFFER_SIZE         16 ///< FIXME: overwrites the FatCACHE!! when big(25 or so)
00030
00031 #define SCROLLMODE_ONCE         0x01
00032 #define SCROLLMODE_LOOP         0x02
00033 #define SCROLLMODE_WAVE         0x03
00034
00035 /************************************************************************/
00036 //MACROS
00037 /************************************************************************/
00038 //active = [TRUE;FALSE]
00039 #define LCD_SET_COLON(active) LCD_Data[8] = active
00040
00041 // DEVICE SPECIFIC!!! (ATmega169)
00042 #define pLCDREG ((unsigned char *)(0xEC))
00043
00044 // DEVICE SPECIFIC!!! (ATmega169) First LCD segment register
00045 #define LCD_CONTRAST_LEVEL(level) LCDCCR=(0x0F & level)
00046
00047
00048 /************************************************************************/
00049 // Global variables
00050 /************************************************************************/
00051 // mt: volatiles added (based on jw patch)
00052 extern volatile char gLCD_Update_Required;
00053 extern char LCD_Data[LCD_REGISTER_COUNT];
00054 extern char gTextBuffer[TEXTBUFFER_SIZE];
00055 extern volatile char gScrollMode;
00056 extern char gFlashTimer;
00057 extern char gColon;
00058 extern char gShowFilename;
00059 extern volatile signed char gScroll;
00060
00061
00062 /************************************************************************/
00063 // Global functions
00064 /************************************************************************/
00065 void LCD_Init (void);
00066 void LCD_WriteDigit(char input, char digit);
00067 void LCD_AllSegments(char show);