From 6a0c85760c655e490da7b9e764f0972b11bfef90 Mon Sep 17 00:00:00 2001 From: Bdale Garbee Date: Mon, 29 Nov 2010 21:39:15 -0700 Subject: sources from initial AVR turn-on for TeleTerra --- avr/tmp/lcd.h | 265 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 265 insertions(+) create mode 100644 avr/tmp/lcd.h (limited to 'avr/tmp/lcd.h') diff --git a/avr/tmp/lcd.h b/avr/tmp/lcd.h new file mode 100644 index 00000000..9ec85b5f --- /dev/null +++ b/avr/tmp/lcd.h @@ -0,0 +1,265 @@ +#ifndef LCD_H +#define LCD_H +/************************************************************************* + Title : C include file for the HD44780U LCD library (lcd.c) + Author: Peter Fleury http://jump.to/fleury + File: $Id: lcd.h,v 1.13.2.2 2006/01/30 19:51:33 peter Exp $ + Software: AVR-GCC 3.3 + Hardware: any AVR device, memory mapped mode only for AT90S4414/8515/Mega +***************************************************************************/ + +/** + @defgroup pfleury_lcd LCD library + @code #include @endcode + + @brief Basic routines for interfacing a HD44780U-based text LCD display + + Originally based on Volker Oth's LCD library, + changed lcd_init(), added additional constants for lcd_command(), + added 4-bit I/O mode, improved and optimized code. + + Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in + 4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported. + + Memory mapped mode compatible with Kanda STK200, but supports also + generation of R/W signal through A8 address line. + + @author Peter Fleury pfleury@gmx.ch http://jump.to/fleury + + @see The chapter Interfacing a HD44780 Based LCD to an AVR + on my home page. + +*/ + +/*@{*/ + +#if (__GNUC__ * 100 + __GNUC_MINOR__) < 303 +#error "This library requires AVR-GCC 3.3 or later, update to newer AVR-GCC compiler !" +#endif + +#include +#include + +/** + * @name Definitions for MCU Clock Frequency + * Adapt the MCU clock frequency in Hz to your target. + */ +#define XTAL 4000000 /**< clock frequency in Hz, used to calculate delay timer */ + + +/** + * @name Definition for LCD controller type + * Use 0 for HD44780 controller, change to 1 for displays with KS0073 controller. + */ +#define LCD_CONTROLLER_KS0073 0 /**< Use 0 for HD44780 controller, 1 for KS0073 controller */ + +/** + * @name Definitions for Display Size + * Change these definitions to adapt setting to your display + */ +#define LCD_LINES 4 /**< number of visible lines of the display */ +#define LCD_DISP_LENGTH 20 /**< visibles characters per line of the display */ +#define LCD_LINE_LENGTH 0x40 /**< internal line length of the display */ +#define LCD_START_LINE1 0x00 /**< DDRAM address of first char of line 1 */ +#define LCD_START_LINE2 0x40 /**< DDRAM address of first char of line 2 */ +#define LCD_START_LINE3 0x14 /**< DDRAM address of first char of line 3 */ +#define LCD_START_LINE4 0x54 /**< DDRAM address of first char of line 4 */ +#define LCD_WRAP_LINES 0 /**< 0: no wrap, 1: wrap at end of visibile line */ + + +#define LCD_IO_MODE 1 /**< 0: memory mapped mode, 1: IO port mode */ +#if LCD_IO_MODE +/** + * @name Definitions for 4-bit IO mode + * Change LCD_PORT if you want to use a different port for the LCD pins. + * + * The four LCD data lines and the three control lines RS, RW, E can be on the + * same port or on different ports. + * Change LCD_RS_PORT, LCD_RW_PORT, LCD_E_PORT if you want the control lines on + * different ports. + * + * Normally the four data lines should be mapped to bit 0..3 on one port, but it + * is possible to connect these data lines in different order or even on different + * ports by adapting the LCD_DATAx_PORT and LCD_DATAx_PIN definitions. + * + */ +#define LCD_PORT PORTD /**< port for the LCD lines */ +#define LCD_DATA0_PORT LCD_PORT /**< port for 4bit data bit 0 */ +#define LCD_DATA1_PORT LCD_PORT /**< port for 4bit data bit 1 */ +#define LCD_DATA2_PORT LCD_PORT /**< port for 4bit data bit 2 */ +#define LCD_DATA3_PORT LCD_PORT /**< port for 4bit data bit 3 */ +#define LCD_DATA0_PIN 0 /**< pin for 4bit data bit 0 */ +#define LCD_DATA1_PIN 1 /**< pin for 4bit data bit 1 */ +#define LCD_DATA2_PIN 2 /**< pin for 4bit data bit 2 */ +#define LCD_DATA3_PIN 3 /**< pin for 4bit data bit 3 */ +#define LCD_RS_PORT LCD_PORT /**< port for RS line */ +#define LCD_RS_PIN 5 /**< pin for RS line */ +#define LCD_RW_PORT LCD_PORT /**< port for RW line */ +#define LCD_RW_PIN 7 /**< pin for RW line */ +#define LCD_E_PORT LCD_PORT /**< port for Enable line */ +#define LCD_E_PIN 4 /**< pin for Enable line */ + +#elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || defined(__AVR_ATmega64__) || \ + defined(__AVR_ATmega8515__)|| defined(__AVR_ATmega103__) || defined(__AVR_ATmega128__) || \ + defined(__AVR_ATmega161__) || defined(__AVR_ATmega162__) +/* + * memory mapped mode is only supported when the device has an external data memory interface + */ +#define LCD_IO_DATA 0xC000 /* A15=E=1, A14=RS=1 */ +#define LCD_IO_FUNCTION 0x8000 /* A15=E=1, A14=RS=0 */ +#define LCD_IO_READ 0x0100 /* A8 =R/W=1 (R/W: 1=Read, 0=Write */ +#else +#error "external data memory interface not available for this device, use 4-bit IO port mode" + +#endif + + +/** + * @name Definitions for LCD command instructions + * The constants define the various LCD controller instructions which can be passed to the + * function lcd_command(), see HD44780 data sheet for a complete description. + */ + +/* instruction register bit positions, see HD44780U data sheet */ +#define LCD_CLR 0 /* DB0: clear display */ +#define LCD_HOME 1 /* DB1: return to home position */ +#define LCD_ENTRY_MODE 2 /* DB2: set entry mode */ +#define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */ +#define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */ +#define LCD_ON 3 /* DB3: turn lcd/cursor on */ +#define LCD_ON_DISPLAY 2 /* DB2: turn display on */ +#define LCD_ON_CURSOR 1 /* DB1: turn cursor on */ +#define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */ +#define LCD_MOVE 4 /* DB4: move cursor/display */ +#define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */ +#define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */ +#define LCD_FUNCTION 5 /* DB5: function set */ +#define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */ +#define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */ +#define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */ +#define LCD_CGRAM 6 /* DB6: set CG RAM address */ +#define LCD_DDRAM 7 /* DB7: set DD RAM address */ +#define LCD_BUSY 7 /* DB7: LCD is busy */ + +/* set entry mode: display shift on/off, dec/inc cursor move direction */ +#define LCD_ENTRY_DEC 0x04 /* display shift off, dec cursor move dir */ +#define LCD_ENTRY_DEC_SHIFT 0x05 /* display shift on, dec cursor move dir */ +#define LCD_ENTRY_INC_ 0x06 /* display shift off, inc cursor move dir */ +#define LCD_ENTRY_INC_SHIFT 0x07 /* display shift on, inc cursor move dir */ + +/* display on/off, cursor on/off, blinking char at cursor position */ +#define LCD_DISP_OFF 0x08 /* display off */ +#define LCD_DISP_ON 0x0C /* display on, cursor off */ +#define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */ +#define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */ +#define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */ + +/* move cursor/shift display */ +#define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */ +#define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */ +#define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */ +#define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */ + +/* function set: set interface data length and number of display lines */ +#define LCD_FUNCTION_4BIT_1LINE 0x20 /* 4-bit interface, single line, 5x7 dots */ +#define LCD_FUNCTION_4BIT_2LINES 0x28 /* 4-bit interface, dual line, 5x7 dots */ +#define LCD_FUNCTION_8BIT_1LINE 0x30 /* 8-bit interface, single line, 5x7 dots */ +#define LCD_FUNCTION_8BIT_2LINES 0x38 /* 8-bit interface, dual line, 5x7 dots */ + + +#define LCD_MODE_DEFAULT ((1<