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kaklik |
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/****************************************************************************
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Title : C file for the HD44780U LCD library (lcd_io.c)
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Author: Chris efstathiou hendrix@otenet.gr
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Date: 1/Jul/2002
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Software: AVR-GCC with AVR-AS
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Target: any AVR device
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Comments: This software is FREE.
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*****************************************************************************/
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#ifndef _IO_REG_MACRO_MODE_
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#define _IO_REG_MACRO_MODE_ 1 /* In case you have the new assignment mode io headers */
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#endif
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#ifndef _SFR_ASM_COMPAT
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#define _SFR_ASM_COMPAT 1 /* This is for GCC 3.2 */
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#endif
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#include <io.h>
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#include <progmem.h>
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#include <eeprom.h>
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#include "lcd_io.h"
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/* constants/macros */
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#ifndef CONCAT1
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#define CONCAT1(a, b) CONCAT2(a, b)
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#endif
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#ifndef CONCAT2
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#define CONCAT2(a, b) a ## b
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#endif
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#define LCD_POWER_ON_DELAY ( (20000*(F_CPU/60000))/100 ) /* 20 milliseconds */
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#define LCD_INIT_DELAY ( (5000*(F_CPU/60000))/100 ) /* 5 milliseconds */
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#define INIT_MODE 2
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#define DATA_MODE 1
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#define CMD_MODE 0
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/* CONVERSION OF LCD_DELAY_TIME TO TRUE MICROSECONDS */
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#if LCD_READ_REQUIRED == 0 || LCD_IO_MODE == 2 || LCD_IO_MODE == 7
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#define LCD_DELAY_SHORT ( (LCD_DELAY_TIME*(F_CPU/60000))/100 )
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#define LCD_DELAY_LONG ( LCD_DELAY_SHORT*40 )
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#endif
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/*######################################################################################################*/
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#if LCD_IO_MODE == 2
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/*######################################################################################################*/
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#define LCD_DATA_PORT_IS_IO 1
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#define LCD_CLOCK_PORT_IS_IO 1
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#define LCD_DATA_PORT CONCAT1(PORT,LCD_DATA_SIGNAL_PORT)
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#define LCD_DATA_DDR_REG CONCAT1(DDR,LCD_DATA_SIGNAL_PORT)
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#define LCD_CLOCK_PORT CONCAT1(PORT,LCD_CLOCK_SIGNAL_PORT)
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#define LCD_CLOCK_DDR_REG CONCAT1(DDR,LCD_CLOCK_SIGNAL_PORT)
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#define LCD_READ_REQUIRED 0
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#if defined(__AVR_ATmega103__)
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#if LCD_DATA_PORT == PORTC
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#undef LCD_DATA_PORT_IS_IO
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#undef LCD_DATA_DDR_REG
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#define LCD_DATA_PORT_IS_IO 0
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#endif
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#if LCD_CLOCK_PORT == PORTC
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#undef LCD_CLOCK_PORT_IS_IO
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#undef LCD_CLOCK_DDR_REG
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#define LCD_CLOCK_PORT_IS_IO 0
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#endif
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#endif /* #if defined(__AVR_ATmega103__) */
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/*######################################################################################################*/
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#elif LCD_IO_MODE == 6
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/*######################################################################################################*/
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#define lcd_toggle_e() ({ cbi(LCD_E_PORT, LCD_E_PIN); delay(F_CPU/6000000); \
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sbi(LCD_E_PORT, LCD_E_PIN); })
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#if LCD_READ_REQUIRED == 1
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#undef LCD_MULTIPLEX_REQUIRED
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#define LCD_MULTIPLEX_REQUIRED 0
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#define BUSY_FLAG 0
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#define DATA 1
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#endif
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#if LCD_LINES == 1 || LCD_LINES == 2 || LCD_LINES == 4
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#else
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#error THE LCD LINES MUST BE 1 OR 2 OR 4 !
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#endif
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#define LCD_D4_PORT_IS_IO 1
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#define LCD_D5_PORT_IS_IO 1
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#define LCD_D6_PORT_IS_IO 1
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#define LCD_D7_PORT_IS_IO 1
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#define LCD_RS_PORT_IS_IO 1
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#define LCD_RW_PORT_IS_IO 1
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#define LCD_E_PORT_IS_IO 1
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#define LCD_D4_PORT CONCAT1(PORT, LCD_DATA4_PORT)
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#define LCD_D5_PORT CONCAT1(PORT, LCD_DATA5_PORT)
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#define LCD_D6_PORT CONCAT1(PORT, LCD_DATA6_PORT)
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#define LCD_D7_PORT CONCAT1(PORT, LCD_DATA7_PORT)
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#define LCD_RS_PORT CONCAT1(PORT, LCD_RS_SIGNAL_PORT)
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#define LCD_RW_PORT CONCAT1(PORT, LCD_RW_SIGNAL_PORT)
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#define LCD_E_PORT CONCAT1(PORT, LCD_E_SIGNAL_PORT)
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#define LCD_D4_DDR_REG CONCAT1(DDR, LCD_DATA4_PORT)
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#define LCD_D5_DDR_REG CONCAT1(DDR, LCD_DATA5_PORT)
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#define LCD_D6_DDR_REG CONCAT1(DDR, LCD_DATA6_PORT)
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#define LCD_D7_DDR_REG CONCAT1(DDR, LCD_DATA7_PORT)
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#define LCD_RS_DDR_REG CONCAT1(DDR, LCD_RS_SIGNAL_PORT)
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#define LCD_RW_DDR_REG CONCAT1(DDR, LCD_RW_SIGNAL_PORT)
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#define LCD_E_DDR_REG CONCAT1(DDR, LCD_E_SIGNAL_PORT)
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#if LCD_READ_REQUIRED == 1
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#define LCD_D4_PIN_REG CONCAT1(PIN, LCD_DATA4_PORT)
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#define LCD_D5_PIN_REG CONCAT1(PIN, LCD_DATA5_PORT)
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#define LCD_D6_PIN_REG CONCAT1(PIN, LCD_DATA6_PORT)
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#define LCD_D7_PIN_REG CONCAT1(PIN, LCD_DATA7_PORT)
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#elif LCD_READ_REQUIRED == 0
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#undef LCD_RW_PORT
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#undef LCD_RW_DDR_REG
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#undef LCD_RW_PORT_IS_IO
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#endif
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#if defined(__AVR_ATmega103__)
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#if LCD_D4_PORT == PORTC
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#if LCD_READ_REQUIRED == 1
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#error THE PORT FOR LCD_D4 IS OUTPUT ONLY!
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#endif
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#undef LCD_D4_PORT_IS_IO
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#undef LCD_D4_DDR_REG
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#define LCD_D4_PORT_IS_IO 0
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#endif
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#if LCD_D5_PORT == PORTC
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#if LCD_READ_REQUIRED == 1
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#error THE PORT FOR LCD_D5 IS OUTPUT ONLY!
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#endif
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#undef LCD_D5_PORT_IS_IO
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#undef LCD_D5_DDR_REG
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#define LCD_D5_PORT_IS_IO 0
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#endif
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#if LCD_D6_PORT == PORTC
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#if LCD_READ_REQUIRED == 1
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#error THE PORT FOR LCD_D6 IS OUTPUT ONLY!
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#endif
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#undef LCD_D6_PORT_IS_IO
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#undef LCD_D6_DDR_REG
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#define LCD_D6_PORT_IS_IO 0
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#endif
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#if LCD_D7_PORT == PORTC
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#if LCD_READ_REQUIRED == 1
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#error THE PORT FOR LCD_D7 IS OUTPUT ONLY!
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#endif
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#undef LCD_D7_PORT_IS_IO
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#undef LCD_D7_DDR_REG
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#define LCD_D7_PORT_IS_IO 0
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#endif
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#if LCD_RS_PORT == PORTC
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#undef LCD_RS_PORT_IS_IO
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#undef LCD_RS_DDR_REG
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#define LCD_RS_PORT_IS_IO 0
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#endif
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#if LCD_READ_REQUIRED == 1
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#if LCD_RW_PORT == PORTC
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#undef LCD_RW_PORT_IS_IO
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#undef LCD_RW_DDR_REG
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#define LCD_RW_PORT_IS_IO 0
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#endif
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#endif
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#if LCD_E_PORT == PORTC
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#undef LCD_E_PORT_IS_IO
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#undef LCD_E_DDR_REG
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#define LCD_E_PORT_IS_IO 0
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#endif
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#endif /* #if defined(__AVR_ATmega103__) */
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/*######################################################################################################*/
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#elif LCD_IO_MODE == 7
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/*######################################################################################################*/
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#define lcd_toggle_e() ({ cbivar(lcd_E_port, lcd_E_pin); delay(F_CPU/6000000); \
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sbivar(lcd_E_port, lcd_E_pin); })
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#if SREG > 0X3F
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#define IO_TO_MEM_OFFSET 0
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#else
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#define IO_TO_MEM_OFFSET 0X20
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#endif
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#define LCD_READ_REQUIRED 0
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#if LCD_0_LINES == 1 || LCD_0_LINES == 2 || LCD_0_LINES == 4
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#else
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#error THE LCD LINES MUST BE 1 OR 2 OR 4 !
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#endif
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#if LCD_1_LINES == 1 || LCD_1_LINES == 2 || LCD_1_LINES == 4
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#else
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#error THE LCD LINES MUST BE 1 OR 2 OR 4 !
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#endif
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#if NUMBER_OF_LCD_UNITS >= 3
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#if LCD_2_LINES == 1 || LCD_2_LINES == 2 || LCD_2_LINES == 4
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#else
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#error THE LCD LINES MUST BE 1 OR 2 OR 4 !
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#endif
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#endif
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#define LCD_D4_PORT_IS_IO 1
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#define LCD_D5_PORT_IS_IO 1
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#define LCD_D6_PORT_IS_IO 1
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#define LCD_D7_PORT_IS_IO 1
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#define LCD_RS_PORT_IS_IO 1
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#define LCD_0_E_PORT_IS_IO 1
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#define LCD_1_E_PORT_IS_IO 1
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#if NUMBER_OF_LCD_UNITS >=3
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#define LCD_2_E_PORT_IS_IO 1
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#endif
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#define LCD_D4_PORT CONCAT1(PORT, LCD_DATA4_PORT)
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#define LCD_D5_PORT CONCAT1(PORT, LCD_DATA5_PORT)
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#define LCD_D6_PORT CONCAT1(PORT, LCD_DATA6_PORT)
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#define LCD_D7_PORT CONCAT1(PORT, LCD_DATA7_PORT)
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#define LCD_RS_PORT CONCAT1(PORT, LCD_RS_SIGNAL_PORT)
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#define LCD_0_E_PORT CONCAT1(PORT, LCD_0_E_SIGNAL_PORT)
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#define LCD_1_E_PORT CONCAT1(PORT, LCD_1_E_SIGNAL_PORT)
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#if NUMBER_OF_LCD_UNITS >=3
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#define LCD_2_E_PORT CONCAT1(PORT, LCD_2_E_SIGNAL_PORT)
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#endif
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#define LCD_D4_DDR_REG CONCAT1(DDR, LCD_DATA4_PORT)
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#define LCD_D5_DDR_REG CONCAT1(DDR, LCD_DATA5_PORT)
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#define LCD_D6_DDR_REG CONCAT1(DDR, LCD_DATA6_PORT)
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#define LCD_D7_DDR_REG CONCAT1(DDR, LCD_DATA7_PORT)
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#define LCD_RS_DDR_REG CONCAT1(DDR, LCD_RS_SIGNAL_PORT)
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#define LCD_0_E_DDR_REG CONCAT1(DDR, LCD_0_E_SIGNAL_PORT)
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#define LCD_1_E_DDR_REG CONCAT1(DDR, LCD_1_E_SIGNAL_PORT)
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#if NUMBER_OF_LCD_UNITS >=3
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#define LCD_2_E_DDR_REG CONCAT1(DDR, LCD_2_E_SIGNAL_PORT)
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#endif
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#if defined(__AVR_ATmega103__)
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#if LCD_D4_PORT == PORTC
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#undef LCD_D4_PORT_IS_IO
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#undef LCD_D4_DDR_REG
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#define LCD_D4_PORT_IS_IO 0
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#endif
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#if LCD_D5_PORT == PORTC
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#undef LCD_D5_PORT_IS_IO
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#undef LCD_D5_DDR_REG
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#define LCD_D5_PORT_IS_IO 0
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#endif
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#if LCD_D6_PORT == PORTC
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#undef LCD_D6_PORT_IS_IO
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#undef LCD_D6_DDR_REG
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#define LCD_D6_PORT_IS_IO 0
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#endif
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#if LCD_D7_PORT == PORTC
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#undef LCD_D7_PORT_IS_IO
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#undef LCD_D7_DDR_REG
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#define LCD_D7_PORT_IS_IO 0
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#endif
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#if LCD_RS_PORT == PORTC
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#undef LCD_RS_PORT_IS_IO
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#undef LCD_RS_DDR_REG
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#define LCD_RS_PORT_IS_IO 0
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#endif
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#if LCD_0_E_PORT == PORTC
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#undef LCD_0_E_PORT_IS_IO
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#undef LCD_0_E_DDR_REG
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#define LCD_0_E_PORT_IS_IO 0
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#endif
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#if LCD_1_E_PORT == PORTC
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#undef LCD_1_E_PORT_IS_IO
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#undef LCD_1_E_DDR_REG
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#define LCD_1_E_PORT_IS_IO 0
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#endif
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#if NUMBER_OF_LCD_UNITS >=3
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#if LCD_2_E_PORT == PORTC
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#undef LCD_2_E_PORT_IS_IO
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#undef LCD_2_E_DDR_REG
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#define LCD_2_E_PORT_IS_IO 0
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#endif
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#endif /* #if NUMBER_OF_LCD_UNITS >=3 */
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#endif /* #if defined(__AVR_ATmega103__) */
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#endif /* #elif LCD_IO_MODE == 7 */
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/*######################################################################################################*/
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/* type definitions */
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typedef unsigned char u08;
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typedef unsigned short u16;
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/*######################################################################################################*/
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/* FUNCTION PROTOTYPES */
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/*######################################################################################################*/
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#if LCD_IO_MODE == 7
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static void sbivar(unsigned char port, unsigned char bit);
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338 |
static void cbivar(unsigned char port, unsigned char bit);
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|
|
339 |
#endif
|
|
|
340 |
|
|
|
341 |
#if LCD_READ_REQUIRED == 1
|
|
|
342 |
static unsigned char lcd_read(unsigned char rs);
|
|
|
343 |
static inline unsigned char lcd_waitbusy(void);
|
|
|
344 |
#endif
|
|
|
345 |
|
|
|
346 |
static void delay(unsigned long int us);
|
|
|
347 |
|
|
|
348 |
/*######################################################################################################*/
|
|
|
349 |
/* GLOBAL variables */
|
|
|
350 |
/*######################################################################################################*/
|
|
|
351 |
|
|
|
352 |
static unsigned char x,y, putc_lock=0;
|
|
|
353 |
#if LCD_IO_MODE == 7
|
|
|
354 |
static unsigned char lcd_E_port=0, lcd_E_pin=0, lcd_chars_per_line=0, lcd_lines=0, current_lcd_unit=0;
|
|
|
355 |
static struct xy {
|
|
|
356 |
unsigned char x;
|
|
|
357 |
unsigned char y;
|
|
|
358 |
} xy_coordinates[NUMBER_OF_LCD_UNITS];
|
|
|
359 |
|
|
|
360 |
#endif
|
|
|
361 |
|
|
|
362 |
/*######################################################################################################*/
|
|
|
363 |
/* local functions */
|
|
|
364 |
/*######################################################################################################*/
|
|
|
365 |
|
|
|
366 |
static void delay(unsigned long int us)
|
|
|
367 |
/* delay for a minimum of <us> microseconds (with a 6 Mhz crystal, the resolution is 1 us) */
|
|
|
368 |
{
|
|
|
369 |
while ( us ) { us--; } /* 6 cpu cycles per loop */
|
|
|
370 |
}
|
|
|
371 |
|
|
|
372 |
/*######################################################################################################*/
|
|
|
373 |
#if LCD_IO_MODE == 7 /* lcd_write() function for 6 bit i/o one lcd unit */
|
|
|
374 |
/*######################################################################################################*/
|
|
|
375 |
|
|
|
376 |
|
|
|
377 |
static void sbivar(unsigned char port, unsigned char bit)
|
|
|
378 |
{
|
|
|
379 |
register unsigned char temp=0;
|
|
|
380 |
|
|
|
381 |
temp=*((unsigned char*)(port+IO_TO_MEM_OFFSET));
|
|
|
382 |
temp|= (1<<bit);
|
|
|
383 |
*((unsigned char*)(port+IO_TO_MEM_OFFSET))=temp;
|
|
|
384 |
|
|
|
385 |
return;
|
|
|
386 |
}
|
|
|
387 |
/*######################################################################################################*/
|
|
|
388 |
|
|
|
389 |
static void cbivar(unsigned char port, unsigned char bit)
|
|
|
390 |
{
|
|
|
391 |
register unsigned char temp=0;
|
|
|
392 |
|
|
|
393 |
temp=*((unsigned char*)(port+IO_TO_MEM_OFFSET));
|
|
|
394 |
temp &= ~(1<<bit);
|
|
|
395 |
*((unsigned char*)(port+IO_TO_MEM_OFFSET))=temp;
|
|
|
396 |
|
|
|
397 |
return;
|
|
|
398 |
}
|
|
|
399 |
/*######################################################################################################*/
|
|
|
400 |
|
|
|
401 |
static void lcd_write(unsigned char data, unsigned char mode)
|
|
|
402 |
{
|
|
|
403 |
register unsigned char rs=0;
|
|
|
404 |
|
|
|
405 |
|
|
|
406 |
if(mode==DATA_MODE) rs=1; else rs=0; /* set the rs value */
|
|
|
407 |
/* output high nibble first */
|
|
|
408 |
if(data&0x10) sbi(LCD_D4_PORT, LCD_D4_PIN); else cbi(LCD_D4_PORT, LCD_D4_PIN);
|
|
|
409 |
if(data&0x20) sbi(LCD_D5_PORT, LCD_D5_PIN); else cbi(LCD_D5_PORT, LCD_D5_PIN);
|
|
|
410 |
if(data&0x40) sbi(LCD_D6_PORT, LCD_D6_PIN); else cbi(LCD_D6_PORT, LCD_D6_PIN);
|
|
|
411 |
if(data&0x80) sbi(LCD_D7_PORT, LCD_D7_PIN); else cbi(LCD_D7_PORT, LCD_D7_PIN);
|
|
|
412 |
if(rs) sbi(LCD_RS_PORT, LCD_RS_PIN); else cbi(LCD_RS_PORT, LCD_RS_PIN);
|
|
|
413 |
lcd_toggle_e();
|
|
|
414 |
/* output low nibble */
|
|
|
415 |
/* if INIT_MODE skip this section else execute it */
|
|
|
416 |
if(mode!=INIT_MODE)
|
|
|
417 |
{
|
|
|
418 |
if(data&0x01) sbi(LCD_D4_PORT, LCD_D4_PIN); else cbi(LCD_D4_PORT, LCD_D4_PIN);
|
|
|
419 |
if(data&0x02) sbi(LCD_D5_PORT, LCD_D5_PIN); else cbi(LCD_D5_PORT, LCD_D5_PIN);
|
|
|
420 |
if(data&0x04) sbi(LCD_D6_PORT, LCD_D6_PIN); else cbi(LCD_D6_PORT, LCD_D6_PIN);
|
|
|
421 |
if(data&0x08) sbi(LCD_D7_PORT, LCD_D7_PIN); else cbi(LCD_D7_PORT, LCD_D7_PIN);
|
|
|
422 |
if(rs) sbi(LCD_RS_PORT, LCD_RS_PIN); else cbi(LCD_RS_PORT, LCD_RS_PIN);
|
|
|
423 |
lcd_toggle_e();
|
|
|
424 |
}
|
|
|
425 |
|
|
|
426 |
delay(LCD_DELAY_SHORT);
|
|
|
427 |
|
|
|
428 |
}
|
|
|
429 |
/*------------------------------------------------------------------------------------------------------*/
|
|
|
430 |
void select_lcd(unsigned char lcd_unit)
|
|
|
431 |
{
|
|
|
432 |
/* Save the current lcd unit x,y coordinates */
|
|
|
433 |
xy_coordinates[current_lcd_unit].x=x;
|
|
|
434 |
xy_coordinates[current_lcd_unit].y=y;
|
|
|
435 |
|
|
|
436 |
if(lcd_unit==0)
|
|
|
437 |
{
|
|
|
438 |
lcd_E_port= LCD_0_E_PORT;
|
|
|
439 |
lcd_E_pin = LCD_0_E_PIN;
|
|
|
440 |
lcd_chars_per_line = LCD_0_CHARS_PER_LINE;
|
|
|
441 |
lcd_lines = LCD_0_LINES;
|
|
|
442 |
current_lcd_unit=lcd_unit; /* Make the requested lcd unit current (active) */
|
|
|
443 |
x=xy_coordinates[lcd_unit].x; /* Load the saved x,y coordinates of the specified lcd unit */
|
|
|
444 |
y=xy_coordinates[lcd_unit].y;
|
|
|
445 |
}
|
|
|
446 |
else if(lcd_unit==1)
|
|
|
447 |
{
|
|
|
448 |
lcd_E_port= LCD_1_E_PORT;
|
|
|
449 |
lcd_E_pin = LCD_1_E_PIN;
|
|
|
450 |
lcd_chars_per_line = LCD_1_CHARS_PER_LINE;
|
|
|
451 |
lcd_lines = LCD_1_LINES;
|
|
|
452 |
current_lcd_unit=lcd_unit;
|
|
|
453 |
x=xy_coordinates[lcd_unit].x;
|
|
|
454 |
y=xy_coordinates[lcd_unit].y;
|
|
|
455 |
}
|
|
|
456 |
#if NUMBER_OF_LCD_UNITS >=3
|
|
|
457 |
else if(lcd_unit==2)
|
|
|
458 |
{
|
|
|
459 |
lcd_E_port= LCD_2_E_PORT;
|
|
|
460 |
lcd_E_pin = LCD_2_E_PIN;
|
|
|
461 |
lcd_chars_per_line = LCD_2_CHARS_PER_LINE;
|
|
|
462 |
lcd_lines = LCD_2_LINES;
|
|
|
463 |
current_lcd_unit=lcd_unit;
|
|
|
464 |
x=xy_coordinates[lcd_unit].x;
|
|
|
465 |
y=xy_coordinates[lcd_unit].y;
|
|
|
466 |
}
|
|
|
467 |
#endif
|
|
|
468 |
return;
|
|
|
469 |
}
|
|
|
470 |
/*######################################################################################################*/
|
|
|
471 |
#elif LCD_IO_MODE == 6 /* lcd_write() function for 6 bit i/o with multi lcd units */
|
|
|
472 |
/*######################################################################################################*/
|
|
|
473 |
|
|
|
474 |
#if LCD_READ_REQUIRED == 1
|
|
|
475 |
|
|
|
476 |
#define LCD_READ_DELAY ( (10*(F_CPU/60000))/100 )
|
|
|
477 |
|
|
|
478 |
static unsigned char lcd_read(unsigned char rs)
|
|
|
479 |
{
|
|
|
480 |
register unsigned char data=0;
|
|
|
481 |
/* RS=1: read data, RS=0: read busy flag, RW=1 read mode */
|
|
|
482 |
if (rs) sbi(LCD_RS_PORT, LCD_RS_PIN); else cbi(LCD_RS_PORT, LCD_RS_PIN);
|
|
|
483 |
|
|
|
484 |
/* configure data pins as input */
|
|
|
485 |
cbi(LCD_D4_DDR_REG, LCD_D4_PIN );
|
|
|
486 |
cbi(LCD_D5_DDR_REG, LCD_D5_PIN );
|
|
|
487 |
cbi(LCD_D6_DDR_REG, LCD_D6_PIN );
|
|
|
488 |
cbi(LCD_D7_DDR_REG, LCD_D7_PIN );
|
|
|
489 |
|
|
|
490 |
/* set R/W pin for reading from LCD */
|
|
|
491 |
sbi(LCD_RW_PORT, LCD_RW_PIN);
|
|
|
492 |
delay(LCD_READ_DELAY);
|
|
|
493 |
|
|
|
494 |
if(bit_is_set(LCD_D7_PIN_REG, LCD_D7_PIN)) { data+=1; }
|
|
|
495 |
data=(data<<1);
|
|
|
496 |
if(bit_is_set(LCD_D6_PIN_REG, LCD_D6_PIN)) { data+=1; }
|
|
|
497 |
data=(data<<1);
|
|
|
498 |
if(bit_is_set(LCD_D5_PIN_REG, LCD_D5_PIN)) { data+=1; }
|
|
|
499 |
data=(data<<1);
|
|
|
500 |
if(bit_is_set(LCD_D4_PIN_REG, LCD_D4_PIN)) { data+=1; }
|
|
|
501 |
data=(data<<1);
|
|
|
502 |
|
|
|
503 |
lcd_toggle_e();
|
|
|
504 |
delay(LCD_READ_DELAY);
|
|
|
505 |
|
|
|
506 |
if(bit_is_set(LCD_D7_PIN_REG, LCD_D7_PIN)) { data+=1; }
|
|
|
507 |
data=(data<<1);
|
|
|
508 |
if(bit_is_set(LCD_D6_PIN_REG, LCD_D6_PIN)) { data+=1; }
|
|
|
509 |
data=(data<<1);
|
|
|
510 |
if(bit_is_set(LCD_D5_PIN_REG, LCD_D5_PIN)) { data+=1; }
|
|
|
511 |
data=(data<<1);
|
|
|
512 |
if(bit_is_set(LCD_D4_PIN_REG, LCD_D4_PIN)) { data+=1; }
|
|
|
513 |
|
|
|
514 |
lcd_toggle_e();
|
|
|
515 |
|
|
|
516 |
/* clear R/W pin for writting to LCD */
|
|
|
517 |
cbi(LCD_RW_PORT, LCD_RW_PIN);
|
|
|
518 |
|
|
|
519 |
/* configure data pins as outputs */
|
|
|
520 |
sbi(LCD_D4_DDR_REG, LCD_D4_PIN );
|
|
|
521 |
sbi(LCD_D5_DDR_REG, LCD_D5_PIN );
|
|
|
522 |
sbi(LCD_D6_DDR_REG, LCD_D6_PIN );
|
|
|
523 |
sbi(LCD_D7_DDR_REG, LCD_D7_PIN );
|
|
|
524 |
|
|
|
525 |
|
|
|
526 |
return (data);
|
|
|
527 |
}
|
|
|
528 |
/*######################################################################################################*/
|
|
|
529 |
static inline unsigned char lcd_waitbusy(void)
|
|
|
530 |
/* loops while lcd is busy, reads address counter */
|
|
|
531 |
{
|
|
|
532 |
register unsigned char c;
|
|
|
533 |
|
|
|
534 |
while ( (c=lcd_read(BUSY_FLAG) & (1<<LCD_BUSY)) );
|
|
|
535 |
|
|
|
536 |
return (c); // return address counter
|
|
|
537 |
}
|
|
|
538 |
|
|
|
539 |
#endif /* #if LCD_READ_REQUIRED == 1 */
|
|
|
540 |
/*######################################################################################################*/
|
|
|
541 |
|
|
|
542 |
static void lcd_write(unsigned char data, unsigned char mode)
|
|
|
543 |
{
|
|
|
544 |
register unsigned char rs=0;
|
|
|
545 |
|
|
|
546 |
/* save and set DDR(X) register(s) in case another program altered those values */
|
|
|
547 |
#if LCD_MULTIPLEX_ENABLE == 1
|
|
|
548 |
|
|
|
549 |
#if LCD_D4_PORT_IS_IO==1
|
|
|
550 |
unsigned char d4_is_output=0;
|
|
|
551 |
if(inp(LCD_D4_DDR_REG)&(1<<LCD_D4_PIN)) { d4_is_output=1; }
|
|
|
552 |
sbi(LCD_D4_DDR_REG, LCD_D4_PIN );
|
|
|
553 |
#endif
|
|
|
554 |
#if LCD_D5_PORT_IS_IO==1
|
|
|
555 |
unsigned char d5_is_output=0;
|
|
|
556 |
if(inp(LCD_D5_DDR_REG)&(1<<LCD_D5_PIN)) { d5_is_output=1; }
|
|
|
557 |
sbi(LCD_D5_DDR_REG, LCD_D5_PIN );
|
|
|
558 |
#endif
|
|
|
559 |
#if LCD_D6_PORT_IS_IO==1
|
|
|
560 |
unsigned char d6_is_output=0;
|
|
|
561 |
if(inp(LCD_D6_DDR_REG)&(1<<LCD_D6_PIN)) { d6_is_output=1; }
|
|
|
562 |
sbi(LCD_D6_DDR_REG, LCD_D6_PIN );
|
|
|
563 |
#endif
|
|
|
564 |
#if LCD_D7_PORT_IS_IO==1
|
|
|
565 |
unsigned char d7_is_output=0;
|
|
|
566 |
if(inp(LCD_D7_DDR_REG)&(1<<LCD_D7_PIN)) { d7_is_output=1; }
|
|
|
567 |
sbi(LCD_D7_DDR_REG, LCD_D7_PIN );
|
|
|
568 |
#endif
|
|
|
569 |
#if LCD_RS_PORT_IS_IO==1
|
|
|
570 |
unsigned char rs_is_output=0;
|
|
|
571 |
if(inp(LCD_RS_DDR_REG)&(1<<LCD_RS_PIN)) { rs_is_output=1; }
|
|
|
572 |
sbi(LCD_RS_DDR_REG, LCD_RS_PIN );
|
|
|
573 |
#endif
|
|
|
574 |
|
|
|
575 |
#endif /* LCD_MULTIPLEX_ENABLE == 1 */
|
|
|
576 |
|
|
|
577 |
if(mode==DATA_MODE) rs=1; else rs=0; /* set the rs value */
|
|
|
578 |
/* output high nibble first */
|
|
|
579 |
if(data&0x10) sbi(LCD_D4_PORT, LCD_D4_PIN); else cbi(LCD_D4_PORT, LCD_D4_PIN);
|
|
|
580 |
if(data&0x20) sbi(LCD_D5_PORT, LCD_D5_PIN); else cbi(LCD_D5_PORT, LCD_D5_PIN);
|
|
|
581 |
if(data&0x40) sbi(LCD_D6_PORT, LCD_D6_PIN); else cbi(LCD_D6_PORT, LCD_D6_PIN);
|
|
|
582 |
if(data&0x80) sbi(LCD_D7_PORT, LCD_D7_PIN); else cbi(LCD_D7_PORT, LCD_D7_PIN);
|
|
|
583 |
if(rs) sbi(LCD_RS_PORT, LCD_RS_PIN); else cbi(LCD_RS_PORT, LCD_RS_PIN);
|
|
|
584 |
lcd_toggle_e();
|
|
|
585 |
/* output low nibble */
|
|
|
586 |
/* if INIT_MODE skip this section else execute it */
|
|
|
587 |
if(mode!=INIT_MODE)
|
|
|
588 |
{
|
|
|
589 |
if(data&0x01) sbi(LCD_D4_PORT, LCD_D4_PIN); else cbi(LCD_D4_PORT, LCD_D4_PIN);
|
|
|
590 |
if(data&0x02) sbi(LCD_D5_PORT, LCD_D5_PIN); else cbi(LCD_D5_PORT, LCD_D5_PIN);
|
|
|
591 |
if(data&0x04) sbi(LCD_D6_PORT, LCD_D6_PIN); else cbi(LCD_D6_PORT, LCD_D6_PIN);
|
|
|
592 |
if(data&0x08) sbi(LCD_D7_PORT, LCD_D7_PIN); else cbi(LCD_D7_PORT, LCD_D7_PIN);
|
|
|
593 |
if(rs) sbi(LCD_RS_PORT, LCD_RS_PIN); else cbi(LCD_RS_PORT, LCD_RS_PIN);
|
|
|
594 |
lcd_toggle_e();
|
|
|
595 |
}
|
|
|
596 |
#if LCD_READ_REQUIRED == 0
|
|
|
597 |
delay(LCD_DELAY_SHORT);
|
|
|
598 |
#elif LCD_READ_REQUIRED == 1
|
|
|
599 |
lcd_waitbusy();
|
|
|
600 |
#endif
|
|
|
601 |
|
|
|
602 |
/* Restore the DDR registers, if multiplexing wanted */
|
|
|
603 |
#if LCD_MULTIPLEX_ENABLE == 1
|
|
|
604 |
|
|
|
605 |
#if LCD_D4_PORT_IS_IO==1
|
|
|
606 |
if(!d4_is_output) { cbi(LCD_D4_DDR_REG, LCD_D4_PIN ); }
|
|
|
607 |
#endif
|
|
|
608 |
#if LCD_D5_PORT_IS_IO==1
|
|
|
609 |
if(!d5_is_output) { cbi(LCD_D5_DDR_REG, LCD_D5_PIN ); }
|
|
|
610 |
#endif
|
|
|
611 |
#if LCD_D6_PORT_IS_IO==1
|
|
|
612 |
if(!d6_is_output) { cbi(LCD_D6_DDR_REG, LCD_D6_PIN ); }
|
|
|
613 |
#endif
|
|
|
614 |
#if LCD_D7_PORT_IS_IO==1
|
|
|
615 |
if(!d7_is_output) { cbi(LCD_D7_DDR_REG, LCD_D7_PIN ); }
|
|
|
616 |
#endif
|
|
|
617 |
#if LCD_RS_PORT_IS_IO==1
|
|
|
618 |
if(!rs_is_output) { cbi(LCD_RS_DDR_REG, LCD_RS_PIN ); }
|
|
|
619 |
#endif
|
|
|
620 |
|
|
|
621 |
#endif /* LCD_MULTIPLEX_ENABLE == 1 */
|
|
|
622 |
}
|
|
|
623 |
/*######################################################################################################*/
|
|
|
624 |
#elif LCD_IO_MODE == 2 /* lcd_write() function for 2 bit i/o */
|
|
|
625 |
/*######################################################################################################*/
|
|
|
626 |
|
|
|
627 |
static void lcd_write(unsigned char lcd_data,unsigned char mode)
|
|
|
628 |
{
|
|
|
629 |
#define toggle_clock() ({ sbi(LCD_CLOCK_PORT, LCD_CLOCK_PIN); cbi(LCD_CLOCK_PORT, LCD_CLOCK_PIN); })
|
|
|
630 |
#define data(x) ({ if(x) sbi(LCD_DATA_PORT, LCD_DATA_PIN); else cbi(LCD_DATA_PORT, LCD_DATA_PIN); })
|
|
|
631 |
#define toggle_data() ({ data(1); delay(F_CPU/6000000); data(0); })
|
|
|
632 |
|
|
|
633 |
register unsigned char x=0, rs=0;
|
|
|
634 |
|
|
|
635 |
/* INITIALIZATION */
|
|
|
636 |
/* Set clock and data pins as outputs, at low state and set rs value */
|
|
|
637 |
#if LCD_CLOCK_PORT_IS_IO
|
|
|
638 |
sbi(LCD_CLOCK_DDR_REG, LCD_CLOCK_PIN);
|
|
|
639 |
#endif
|
|
|
640 |
#if LCD_DATA_PORT_IS_IO
|
|
|
641 |
sbi(LCD_DATA_DDR_REG, LCD_DATA_PIN);
|
|
|
642 |
#endif
|
|
|
643 |
cbi(LCD_CLOCK_PORT, LCD_CLOCK_PIN); cbi(LCD_DATA_PORT, LCD_DATA_PIN);
|
|
|
644 |
if(mode==DATA_MODE) rs=1; else rs=0;
|
|
|
645 |
|
|
|
646 |
/* send high nibble first */
|
|
|
647 |
x=6; while(x--) { toggle_clock(); } /* clear shift register */
|
|
|
648 |
data(1); toggle_clock(); /* send E "AND" signal */
|
|
|
649 |
data(rs); toggle_clock(); /* send RS signal */
|
|
|
650 |
x=0x80; while(x>=0x10) { data(lcd_data&x); toggle_clock(); x=(x>>1); }
|
|
|
651 |
/* Strobe E pin making sure that the pulse is 450 ns min */
|
|
|
652 |
toggle_data();
|
|
|
653 |
|
|
|
654 |
/* send low nibble Clock and Data are already low */
|
|
|
655 |
x=6; while(x--) { toggle_clock(); } /* clear shift register */
|
|
|
656 |
data(1); toggle_clock(); /* send E "AND" signal */
|
|
|
657 |
data(rs); toggle_clock(); /* send RS signal */
|
|
|
658 |
x=0x08; while(x>=0x01) { data(lcd_data&x); toggle_clock(); x=(x>>1); }
|
|
|
659 |
/* if INIT_MODE do NOT strobe the E pin else strobe it */
|
|
|
660 |
if(mode!=INIT_MODE) { toggle_data(); }
|
|
|
661 |
|
|
|
662 |
delay(LCD_DELAY_SHORT); /* wait for command to execute */
|
|
|
663 |
|
|
|
664 |
}
|
|
|
665 |
/*######################################################################################################*/
|
|
|
666 |
#endif /* #elif LCD_IO_MODE == 2 */
|
|
|
667 |
/*######################################################################################################*/
|
|
|
668 |
|
|
|
669 |
/*######################################################################################################*/
|
|
|
670 |
/* PUBLIC FUNCTIONS */
|
|
|
671 |
/*######################################################################################################*/
|
|
|
672 |
void lcd_command(unsigned char cmd)
|
|
|
673 |
/* send command <cmd> to LCD */
|
|
|
674 |
{
|
|
|
675 |
lcd_write(cmd,CMD_MODE);
|
|
|
676 |
|
|
|
677 |
}
|
|
|
678 |
/*######################################################################################################*/
|
|
|
679 |
|
|
|
680 |
void lcd_gotoxy(unsigned char lcd_x, unsigned char lcd_y)
|
|
|
681 |
/* goto position (x,y) */
|
|
|
682 |
{
|
|
|
683 |
#if LCD_IO_MODE == 7
|
|
|
684 |
|
|
|
685 |
if(lcd_x >= lcd_chars_per_line || lcd_y >= lcd_lines) { putc_lock=1; return; }
|
|
|
686 |
else putc_lock=0;
|
|
|
687 |
|
|
|
688 |
if (lcd_y==0 ) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+lcd_x); }
|
|
|
689 |
else if(lcd_y==1) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+lcd_x); }
|
|
|
690 |
else if(lcd_y==2) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE3+lcd_x); }
|
|
|
691 |
else { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE4+lcd_x); }
|
|
|
692 |
/*------------------------------------------------------------------------------------------------------*/
|
|
|
693 |
#elif LCD_IO_MODE == 6 || LCD_IO_MODE == 2
|
|
|
694 |
/*------------------------------------------------------------------------------------------------------*/
|
|
|
695 |
|
|
|
696 |
if(lcd_x >= LCD_CHARS_PER_LINE || lcd_y >= LCD_LINES) { putc_lock=1; return; }
|
|
|
697 |
else putc_lock=0;
|
|
|
698 |
|
|
|
699 |
#if LCD_LINES==1
|
|
|
700 |
if (lcd_y==0 ) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+lcd_x); }
|
|
|
701 |
#endif
|
|
|
702 |
#if LCD_LINES==2
|
|
|
703 |
if (lcd_y==0 ) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+lcd_x); }
|
|
|
704 |
else { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+lcd_x); }
|
|
|
705 |
#endif
|
|
|
706 |
|
|
|
707 |
#if LCD_LINES==4
|
|
|
708 |
if (lcd_y==0 ) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+lcd_x); }
|
|
|
709 |
else if(lcd_y==1) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+lcd_x); }
|
|
|
710 |
else if(lcd_y==2) { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE3+lcd_x); }
|
|
|
711 |
else { lcd_command((1<<LCD_DDRAM)+LCD_START_LINE4+lcd_x); }
|
|
|
712 |
#endif
|
|
|
713 |
#endif
|
|
|
714 |
x=lcd_x;
|
|
|
715 |
y=lcd_y;
|
|
|
716 |
|
|
|
717 |
}/* lcd_gotoxy */
|
|
|
718 |
/*######################################################################################################*/
|
|
|
719 |
|
|
|
720 |
unsigned int lcd_getxy(void)
|
|
|
721 |
{
|
|
|
722 |
return((y*100)+x);
|
|
|
723 |
}
|
|
|
724 |
/*######################################################################################################*/
|
|
|
725 |
|
|
|
726 |
void lcd_clrscr(void)
|
|
|
727 |
/* clear lcd and set cursor to home position */
|
|
|
728 |
{
|
|
|
729 |
lcd_command(1<<LCD_CLR);
|
|
|
730 |
#if LCD_READ_REQUIRED == 0 || LCD_IO_MODE == 2 || LCD_IO_MODE == 7
|
|
|
731 |
delay(LCD_DELAY_LONG); /* this command needs more waiting time to execute */
|
|
|
732 |
#elif LCD_READ_REQUIRED == 1 && LCD_IO_MODE == 6
|
|
|
733 |
lcd_waitbusy();
|
|
|
734 |
#endif
|
|
|
735 |
|
|
|
736 |
x=0; y=0;
|
|
|
737 |
}
|
|
|
738 |
/*######################################################################################################*/
|
|
|
739 |
|
|
|
740 |
void lcd_clrline(unsigned char line)
|
|
|
741 |
/* clear a specific lcd line and set cursor at the start of the line */
|
|
|
742 |
{
|
|
|
743 |
#if LCD_IO_MODE == 7
|
|
|
744 |
if(lcd_lines==1)
|
|
|
745 |
{
|
|
|
746 |
lcd_gotoxy(0, 0);
|
|
|
747 |
while(x<lcd_chars_per_line) { lcd_putc(' '); }
|
|
|
748 |
lcd_gotoxy(0, 0);
|
|
|
749 |
}
|
|
|
750 |
|
|
|
751 |
if(line<lcd_lines)
|
|
|
752 |
{
|
|
|
753 |
lcd_gotoxy(0, line);
|
|
|
754 |
while(x<lcd_chars_per_line) { lcd_putc(' '); }
|
|
|
755 |
lcd_gotoxy(0, line);
|
|
|
756 |
}
|
|
|
757 |
|
|
|
758 |
#elif LCD_IO_MODE == 6 || LCD_IO_MODE == 2
|
|
|
759 |
|
|
|
760 |
#if LCD_LINES == 1
|
|
|
761 |
lcd_gotoxy(0, 0);
|
|
|
762 |
while(x<LCD_CHARS_PER_LINE) { lcd_putc(' '); }
|
|
|
763 |
lcd_gotoxy(0, 0);
|
|
|
764 |
#else /* #if LCD_LINES == 1 */
|
|
|
765 |
if(line<LCD_LINES)
|
|
|
766 |
{
|
|
|
767 |
lcd_gotoxy(0, line);
|
|
|
768 |
while(x<LCD_CHARS_PER_LINE) { lcd_putc(' '); }
|
|
|
769 |
lcd_gotoxy(0, line);
|
|
|
770 |
}
|
|
|
771 |
#endif /* #if LCD_LINES == 1 */
|
|
|
772 |
#endif /* #if LCD_IO_MODE == 7 */
|
|
|
773 |
}
|
|
|
774 |
/*######################################################################################################*/
|
|
|
775 |
|
|
|
776 |
void lcd_home(void)
|
|
|
777 |
/* set cursor to home position */
|
|
|
778 |
{
|
|
|
779 |
lcd_command(1<<LCD_HOME);
|
|
|
780 |
#if LCD_READ_REQUIRED == 0 || LCD_IO_MODE == 2 || LCD_IO_MODE == 7
|
|
|
781 |
delay(LCD_DELAY_LONG); /* this command needs more waiting time to execute */
|
|
|
782 |
#elif LCD_READ_REQUIRED == 1 && LCD_IO_MODE == 6
|
|
|
783 |
lcd_waitbusy();
|
|
|
784 |
#endif
|
|
|
785 |
x=0; y=0;
|
|
|
786 |
}
|
|
|
787 |
/*######################################################################################################*/
|
|
|
788 |
|
|
|
789 |
void lcd_putc(unsigned char c)
|
|
|
790 |
/* print character at current cursor position */
|
|
|
791 |
{
|
|
|
792 |
if(!putc_lock)
|
|
|
793 |
{
|
|
|
794 |
#if LCD_IO_MODE == 7
|
|
|
795 |
if(lcd_lines !=1)
|
|
|
796 |
{ if(c=='\n') { if(y<lcd_lines-1) lcd_gotoxy(0,(y+1)); }
|
|
|
797 |
else if(x<lcd_chars_per_line) { lcd_write(c, DATA_MODE); x++; }
|
|
|
798 |
#if LCD_AUTO_LINE_FEED == 1
|
|
|
799 |
else if(y<lcd_lines-1) { lcd_gotoxy(0,(y+1)); lcd_write(c, DATA_MODE); x++; }
|
|
|
800 |
else { lcd_gotoxy(0,0); lcd_write(c, DATA_MODE); x++; }
|
|
|
801 |
#endif
|
|
|
802 |
}
|
|
|
803 |
else{
|
|
|
804 |
if(c=='\n') { return; }
|
|
|
805 |
if(x<lcd_chars_per_line) { lcd_write(c, DATA_MODE); x++; }
|
|
|
806 |
}
|
|
|
807 |
#elif LCD_IO_MODE == 6 || LCD_IO_MODE == 2
|
|
|
808 |
|
|
|
809 |
#if LCD_LINES!=1
|
|
|
810 |
if(c=='\n') { if(y<LCD_LINES-1) lcd_gotoxy(0,(y+1)); }
|
|
|
811 |
else if(x<LCD_CHARS_PER_LINE) { lcd_write(c, DATA_MODE); x++; }
|
|
|
812 |
#if LCD_AUTO_LINE_FEED == 1
|
|
|
813 |
else if(y<LCD_LINES-1) { lcd_gotoxy(0,(y+1)); lcd_write(c, DATA_MODE); x++; }
|
|
|
814 |
else { lcd_gotoxy(0,0); lcd_write(c, DATA_MODE); x++; }
|
|
|
815 |
#endif
|
|
|
816 |
|
|
|
817 |
#else
|
|
|
818 |
if(c=='\n') { return; }
|
|
|
819 |
if(x<LCD_CHARS_PER_LINE) { lcd_write(c, DATA_MODE); x++; }
|
|
|
820 |
#endif
|
|
|
821 |
|
|
|
822 |
#endif /* #if LCD_IO_MODE == 7 */
|
|
|
823 |
}
|
|
|
824 |
}
|
|
|
825 |
/*######################################################################################################*/
|
|
|
826 |
|
|
|
827 |
void lcd_puts(const unsigned char *s)
|
|
|
828 |
/* print string on lcd (no auto linefeed) */
|
|
|
829 |
{
|
|
|
830 |
register unsigned char c;
|
|
|
831 |
|
|
|
832 |
while ( (c = *s++) ) { lcd_putc(c); }
|
|
|
833 |
|
|
|
834 |
}
|
|
|
835 |
/*######################################################################################################*/
|
|
|
836 |
|
|
|
837 |
void lcd_puts_p(const unsigned char *progmem_s)
|
|
|
838 |
/* print string from program memory on lcd (no auto linefeed) */
|
|
|
839 |
{
|
|
|
840 |
register unsigned char c;
|
|
|
841 |
|
|
|
842 |
while ( (c = PRG_RDB(progmem_s++)) ) { lcd_putc(c); }
|
|
|
843 |
|
|
|
844 |
}
|
|
|
845 |
/*######################################################################################################*/
|
|
|
846 |
|
|
|
847 |
void lcd_puts_e(unsigned char *eeprom_s)
|
|
|
848 |
/* print string from eeprom on lcd (no auto linefeed) */
|
|
|
849 |
{
|
|
|
850 |
register unsigned char c;
|
|
|
851 |
|
|
|
852 |
while( (c=eeprom_rb((unsigned int)eeprom_s++))&& c!=0xFF ) { lcd_putc(c); }
|
|
|
853 |
/*{ if(c==0xFF) break; lcd_putc(c); }*/
|
|
|
854 |
}
|
|
|
855 |
/*######################################################################################################*/
|
|
|
856 |
|
|
|
857 |
void lcd_puti(int value, unsigned char dot_position)
|
|
|
858 |
/* print signed integer on lcd with or without comma (no auto linefeed) */
|
|
|
859 |
{
|
|
|
860 |
unsigned char lcd_data[6]={'0','0','0','0','0','0' }, position=sizeof(lcd_data), radix=10;
|
|
|
861 |
|
|
|
862 |
/* convert int to ascii */
|
|
|
863 |
if(value<0) { lcd_putc('-'); value=-value; }
|
|
|
864 |
do { position--; *(lcd_data+position)=(value%radix)+'0'; value/=radix; } while(value);
|
|
|
865 |
|
|
|
866 |
/* some fractional digit corrections */
|
|
|
867 |
if( dot_position>=sizeof(lcd_data) ) return;
|
|
|
868 |
while( (sizeof(lcd_data)-dot_position)<=position ) position--;
|
|
|
869 |
|
|
|
870 |
/* start displaying the number */
|
|
|
871 |
for(;position<=(sizeof(lcd_data)-1);position++)
|
|
|
872 |
{
|
|
|
873 |
if( position==sizeof(lcd_data)-dot_position ) lcd_putc(',');
|
|
|
874 |
lcd_putc(lcd_data[position]);
|
|
|
875 |
}
|
|
|
876 |
|
|
|
877 |
return;
|
|
|
878 |
}
|
|
|
879 |
/*######################################################################################################*/
|
|
|
880 |
#if LCD_IO_MODE == 6 || LCD_IO_MODE == 2
|
|
|
881 |
/*######################################################################################################*/
|
|
|
882 |
|
|
|
883 |
void lcd_init(void)
|
|
|
884 |
{
|
|
|
885 |
/* initialize display and select type of cursor */
|
|
|
886 |
/* dispAttr: LCD_DISP_OFF, LCD_DISP_ON, LCD_DISP_ON_CURSOR, LCD_DISP_CURSOR_BLINK */
|
|
|
887 |
|
|
|
888 |
#if LCD_LINES==1
|
|
|
889 |
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
|
|
|
890 |
#else
|
|
|
891 |
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
|
|
|
892 |
#endif
|
|
|
893 |
|
|
|
894 |
#if LCD_IO_MODE == 6
|
|
|
895 |
|
|
|
896 |
#if LCD_E_PORT_IS_IO==1
|
|
|
897 |
sbi(LCD_E_DDR_REG, LCD_E_PIN );
|
|
|
898 |
#endif
|
|
|
899 |
sbi(LCD_E_PORT, LCD_E_PIN );
|
|
|
900 |
|
|
|
901 |
#if LCD_MULTIPLEX_ENABLE == 0
|
|
|
902 |
|
|
|
903 |
#if LCD_D4_PORT_IS_IO==1
|
|
|
904 |
sbi(LCD_D4_DDR_REG, LCD_D4_PIN );
|
|
|
905 |
#endif
|
|
|
906 |
#if LCD_D5_PORT_IS_IO==1
|
|
|
907 |
sbi(LCD_D5_DDR_REG, LCD_D5_PIN );
|
|
|
908 |
#endif
|
|
|
909 |
#if LCD_D6_PORT_IS_IO==1
|
|
|
910 |
sbi(LCD_D6_DDR_REG, LCD_D6_PIN );
|
|
|
911 |
#endif
|
|
|
912 |
#if LCD_D7_PORT_IS_IO==1
|
|
|
913 |
sbi(LCD_D7_DDR_REG, LCD_D7_PIN );
|
|
|
914 |
#endif
|
|
|
915 |
#if LCD_RS_PORT_IS_IO==1
|
|
|
916 |
sbi(LCD_RS_DDR_REG, LCD_RS_PIN );
|
|
|
917 |
#endif
|
|
|
918 |
|
|
|
919 |
#if LCD_READ_REQUIRED == 1
|
|
|
920 |
#if LCD_RW_PORT_IS_IO == 1
|
|
|
921 |
sbi(LCD_RW_DDR_REG, LCD_RW_PIN );
|
|
|
922 |
#endif
|
|
|
923 |
cbi(LCD_RW_PORT, LCD_RW_PIN );
|
|
|
924 |
#endif
|
|
|
925 |
|
|
|
926 |
#endif /* #if LCD_MULTIPLEX_ENABLE == 0 */
|
|
|
927 |
|
|
|
928 |
#endif /* #if LCD_IO_MODE == 6 */
|
|
|
929 |
|
|
|
930 |
/*------ Initialize lcd to 4 bit i/o mode -------*/
|
|
|
931 |
/* initial write to lcd is 8bit using delay since busy flag can't be checked here anyway */
|
|
|
932 |
|
|
|
933 |
delay(LCD_POWER_ON_DELAY); /* Wait 20 milliseconds */
|
|
|
934 |
|
|
|
935 |
lcd_write(LCD_FUNCTION_8BIT_1LINE, INIT_MODE);
|
|
|
936 |
delay(LCD_INIT_DELAY); /* Wait 5 milliseconds */
|
|
|
937 |
|
|
|
938 |
lcd_write(LCD_FUNCTION_8BIT_1LINE, INIT_MODE);
|
|
|
939 |
|
|
|
940 |
lcd_write(LCD_FUNCTION_8BIT_1LINE, INIT_MODE);
|
|
|
941 |
|
|
|
942 |
lcd_write(LCD_FUNCTION_4BIT_1LINE, INIT_MODE); /* set IO mode to 4bit */
|
|
|
943 |
|
|
|
944 |
|
|
|
945 |
/* from now on the lcd accepts only 4 bit I/O, so we can use lcd_command() */
|
|
|
946 |
|
|
|
947 |
lcd_command(LCD_FUNCTION_DEFAULT); /* function set: display lines */
|
|
|
948 |
lcd_command(LCD_DISP_OFF); /* display off */
|
|
|
949 |
lcd_clrscr(); /* display clear */
|
|
|
950 |
lcd_command(LCD_MODE_DEFAULT); /* set entry mode */
|
|
|
951 |
lcd_command(LCD_DISP_ON); /* LCD DISPLAY ON (DEFAULT) */
|
|
|
952 |
|
|
|
953 |
}/* lcd_init */
|
|
|
954 |
/*######################################################################################################*/
|
|
|
955 |
#elif LCD_IO_MODE == 7
|
|
|
956 |
/*######################################################################################################*/
|
|
|
957 |
|
|
|
958 |
void lcd_init(void)
|
|
|
959 |
{
|
|
|
960 |
unsigned char lcd_unit=0;
|
|
|
961 |
/* initialize display and select type of cursor */
|
|
|
962 |
/* dispAttr: LCD_DISP_OFF, LCD_DISP_ON, LCD_DISP_ON_CURSOR, LCD_DISP_CURSOR_BLINK */
|
|
|
963 |
|
|
|
964 |
#if LCD_D4_PORT_IS_IO == 1
|
|
|
965 |
sbi(LCD_D4_DDR_REG, LCD_D4_PIN );
|
|
|
966 |
#endif
|
|
|
967 |
#if LCD_D5_PORT_IS_IO == 1
|
|
|
968 |
sbi(LCD_D5_DDR_REG, LCD_D5_PIN );
|
|
|
969 |
#endif
|
|
|
970 |
#if LCD_D6_PORT_IS_IO == 1
|
|
|
971 |
sbi(LCD_D6_DDR_REG, LCD_D6_PIN );
|
|
|
972 |
#endif
|
|
|
973 |
#if LCD_D7_PORT_IS_IO == 1
|
|
|
974 |
sbi(LCD_D7_DDR_REG, LCD_D7_PIN );
|
|
|
975 |
#endif
|
|
|
976 |
#if LCD_RS_PORT_IS_IO == 1
|
|
|
977 |
sbi(LCD_RS_DDR_REG, LCD_RS_PIN );
|
|
|
978 |
#endif
|
|
|
979 |
|
|
|
980 |
#if LCD_0_E_PORT_IS_IO == 1
|
|
|
981 |
sbi(LCD_0_E_DDR_REG, LCD_0_E_PIN );
|
|
|
982 |
#endif
|
|
|
983 |
sbi(LCD_0_E_PORT, LCD_0_E_PIN );
|
|
|
984 |
|
|
|
985 |
#if LCD_1_E_PORT_IS_IO == 1
|
|
|
986 |
sbi(LCD_1_E_DDR_REG, LCD_1_E_PIN );
|
|
|
987 |
#endif
|
|
|
988 |
sbi(LCD_1_E_PORT, LCD_1_E_PIN );
|
|
|
989 |
|
|
|
990 |
#if NUMBER_OF_LCD_UNITS >= 3
|
|
|
991 |
#if LCD_2_E_PORT_IS_IO == 1
|
|
|
992 |
sbi(LCD_2_E_DDR_REG, LCD_2_E_PIN );
|
|
|
993 |
#endif
|
|
|
994 |
sbi(LCD_2_E_PORT, LCD_2_E_PIN );
|
|
|
995 |
#endif
|
|
|
996 |
|
|
|
997 |
/*------ Initialize lcd to 4 bit i/o mode -------*/
|
|
|
998 |
/* initial write to lcd is 8bit using delay since busy flag can't be checked here anyway */
|
|
|
999 |
xy_coordinates[LCD_0].x=0;
|
|
|
1000 |
xy_coordinates[LCD_0].y=0;
|
|
|
1001 |
xy_coordinates[LCD_1].x=0;
|
|
|
1002 |
xy_coordinates[LCD_1].y=0;
|
|
|
1003 |
#if NUMBER_OF_LCD_UNITS >=3
|
|
|
1004 |
xy_coordinates[LCD_2].x=0;
|
|
|
1005 |
xy_coordinates[LCD_2].y=0;
|
|
|
1006 |
#endif
|
|
|
1007 |
|
|
|
1008 |
|
|
|
1009 |
for(lcd_unit=0; lcd_unit<NUMBER_OF_LCD_UNITS; lcd_unit++)
|
|
|
1010 |
{
|
|
|
1011 |
select_lcd(lcd_unit);
|
|
|
1012 |
|
|
|
1013 |
delay(LCD_POWER_ON_DELAY); /* Wait 20 milliseconds */
|
|
|
1014 |
lcd_write(LCD_FUNCTION_8BIT_1LINE, INIT_MODE);
|
|
|
1015 |
delay(LCD_INIT_DELAY); /* Wait 5 milliseconds */
|
|
|
1016 |
lcd_write(LCD_FUNCTION_8BIT_1LINE, INIT_MODE);
|
|
|
1017 |
lcd_write(LCD_FUNCTION_8BIT_1LINE, INIT_MODE);
|
|
|
1018 |
lcd_write(LCD_FUNCTION_4BIT_1LINE, INIT_MODE); /* set IO mode to 4bit */
|
|
|
1019 |
|
|
|
1020 |
/* from now on the lcd accepts only 4 bit I/O, so we can use lcd_command() */
|
|
|
1021 |
/* function set: set how many lines the lcd unit has. */
|
|
|
1022 |
if(lcd_lines==1) { lcd_command(LCD_FUNCTION_4BIT_1LINE); }
|
|
|
1023 |
else { lcd_command(LCD_FUNCTION_4BIT_2LINES); }
|
|
|
1024 |
|
|
|
1025 |
lcd_command(LCD_DISP_OFF); /* display off */
|
|
|
1026 |
lcd_clrscr(); /* display clear */
|
|
|
1027 |
lcd_command(LCD_MODE_DEFAULT); /* set entry mode */
|
|
|
1028 |
lcd_command(LCD_DISP_ON); /* Display on */
|
|
|
1029 |
|
|
|
1030 |
}
|
|
|
1031 |
select_lcd(0);
|
|
|
1032 |
|
|
|
1033 |
return;
|
|
|
1034 |
}/* lcd_init */
|
|
|
1035 |
|
|
|
1036 |
#endif
|
|
|
1037 |
/*######################################################################################################*/
|
|
|
1038 |
/* T H E E N D */
|
|
|
1039 |
/*######################################################################################################*/
|
|
|
1040 |
|