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https://github.com/1991Patrick/I2C_SHT2x.git
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134 lines
4.5 KiB
C
134 lines
4.5 KiB
C
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/*!
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* \file i2c_lcd.h
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* \author Patrick Taling (not the original author)
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* \date 20/02/2017
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* \version 1.0
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*
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* \brief Simple I2C LCD library to write text to a I2C lcd (PCF8574T adress 0x27) with the ATxmega256a3u.
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*
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* \details The file i2c_lcd.h is the library for a I2C lcd (PCF8574T adress 0x27)
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* The library needs some parts of the i2c_lcd library from Noel200 from http://www.elektroda.pl/rtvforum/topic2756081.html.
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* The library can be downloaded from: http://www.elektroda.pl/rtvforum/login.php?redirect=download.php&id=670533.
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* Go to LCD_PCF8574T/lcd_pcf/ and use i2c_lcd.c and i2c_lcd.h from the pakkage
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*
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* The library needs the i2c library from w.e.dolman (<a href="mailto:w.e.dolman@hva.nl">w.e.dolman@hva.nl</a>)
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* For i2c.c use code 21.8 from "de taal C en de Xmega tweede druk" http://dolman-wim.nl/xmega/book/index.php
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* For i2c.h use code 21.9 from "de taal C en de Xmega tweede druk" http://dolman-wim.nl/xmega/book/index.php
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*
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*
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* ## Original author information ##
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Obs<EFBFBD>uga wy<EFBFBD>wietlacza HD44780 po I2C za pomoc<EFBFBD> PCF8574T.
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2015-01-DASEJ , dasej(at)wp.pl
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AVR Studio 4.18, programator AVR PROG MKII,
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Procesor Atmega328P 16 MHz, +5V.
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* ####
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*
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*
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* \verbatim
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#include <i2c.h>
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\endverbatim
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* \par
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*
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* \note An AVR-project can use multiple I2C's. One shoud take care that
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* in different source files there are no multiple I2C
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* definitions for the same I2C.
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*/
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#include <util/delay.h>
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#include "i2c.h"
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#define LCD_LINES 2 //!< Number of visible lines of the display
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#define LCD_DISP_LENGTH 16 //!< Visible characters per line of the display
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#if LCD_DISP_LENGTH==16
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#define LCD_START_LINE1 0x00 //!< DDRAM address of first char of line 1
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#define LCD_START_LINE2 0x40 //!< DDRAM address of first char of line 2
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#define LCD_START_LINE3 0x10 //!< DDRAM address of first char of line 3
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#define LCD_START_LINE4 0x50 //!< DDRAM address of first char of line 4
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#else
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#define LCD_START_LINE1 0x00 //!< DDRAM address of first char of line 1
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#define LCD_START_LINE2 0x40 //!< DDRAM address of first char of line 2
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#define LCD_START_LINE3 0x14 //!< DDRAM address of first char of line 3
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#define LCD_START_LINE4 0x54 //!< DDRAM address of first char of line 4
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#endif
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#define i2c_lcd_RS (1 << 0)
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#define i2c_lcd_RW (1 << 1)
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#define i2c_lcd_E (1 << 2)
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#define i2c_lcd_LED (1 << 3)
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#define i2c_lcd_DB4 (1 << 4)
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#define i2c_lcd_DB5 (1 << 5)
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#define i2c_lcd_DB6 (1 << 6)
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#define i2c_lcd_DB7 (1 << 7)
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#define i2c_lcd_rs_lo() i2c_lcd_status &= ~i2c_lcd_RS
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#define i2c_lcd_rs_hi() i2c_lcd_status |= i2c_lcd_RS
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#define i2c_lcd_rw_lo() i2c_lcd_status &= ~i2c_lcd_RW
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#define i2c_lcd_rw_hi() i2c_lcd_status |= i2c_lcd_RW
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#define i2c_lcd_e_lo() i2c_lcd_status &= ~i2c_lcd_E
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#define i2c_lcd_e_hi() i2c_lcd_status |= i2c_lcd_E
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#define i2c_lcd_led_lo() i2c_lcd_status &= ~i2c_lcd_LED
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#define i2c_lcd_led_hi() i2c_lcd_status |= i2c_lcd_LED
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#define HD44780_ENTRY_MODE 0x04
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#define HD44780_EM_SHIFT_CURSOR 0
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#define HD44780_EM_SHIFT_DISPLAY 1
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#define HD44780_EM_DECREMENT 0
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#define HD44780_EM_INCREMENT 2
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#define HD44780_DISPLAY_ONOFF 0x08
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#define HD44780_DISPLAY_OFF 0
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#define HD44780_DISPLAY_ON 4
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#define HD44780_CURSOR_OFF 0
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#define HD44780_CURSOR_ON 2
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#define HD44780_CURSOR_NOBLINK 0
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#define HD44780_CURSOR_BLINK 1
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#define HD44780_DISPLAY_CURSOR_SHIFT 0x10
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#define HD44780_SHIFT_CURSOR 0
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#define HD44780_SHIFT_DISPLAY 8
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#define HD44780_SHIFT_LEFT 0
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#define HD44780_SHIFT_RIGHT 4
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#define HD44780_FUNCTION_SET 0x20
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#define HD44780_FONT5x7 0
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#define HD44780_FONT5x10 4
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#define HD44780_ONE_LINE 0
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#define HD44780_TWO_LINE 8
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#define HD44780_4_BIT 0
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#define HD44780_8_BIT 16
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#define HD44780_CGRAM_SET 0x40
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#define HD44780_DDRAM_SET 0x80
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#define HD44780_CLEAR 0x01
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#define i2c_lcd_ADDR 0x27 //I2C LCD adres.
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char i2c_lcd_status;
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void i2c_lcd_write_status(void);
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void i2c_lcd_data_part(char data_part);
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void i2c_lcd_write(char data);
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void i2c_lcd_write_instruction(char instruction);
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void i2c_lcd_write_data(char data);
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void i2c_lcd_write_text(char *text);
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void i2c_lcd_clear(void);
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void i2c_lcd_set_cursor(char x, char y);
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void i2c_lcd_led_on(void);
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void i2c_lcd_led_off(void);
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void i2c_lcd_init(void);
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