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#include <pic18.h>
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#include "mylcd.h"
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#include "delay.h"
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#include "MyI2C.h"
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bit enable0;
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bit enable1;
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void mylcd_strobe(void)
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{
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if (enable0)
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LCD_EN0 = 1;
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if (enable1)
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LCD_EN1 = 1;
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asm("nop");
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asm("nop");
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DelayUs(1);
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if (enable0)
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LCD_EN0 = 0;
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if (enable1)
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LCD_EN1 = 0;
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}
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void mylcd_write_byte(unsigned char data)
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{
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StartI2C(LCD_IC);
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WriteI2CByte( data );
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StopI2C();
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DelayUs(4); //I2C spec's siger min 4.7 uSec mellem stop og næste start
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}
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void mylcd_cmd(unsigned char c)
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{
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LCD_WAIT; // may check LCD busy flag, or just delay a little, depending on lcd.h
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mylcd_write_byte(c);
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mylcd_strobe();
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}
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void mylcd_data(unsigned char c)
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{
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LCD_WAIT; // may check LCD busy flag, or just delay a little, depending on lcd.h
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LCD_RS0 = 1;
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LCD_RS1 = 1;
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mylcd_cmd(c);
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LCD_RS0 = 0;
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LCD_RS1 = 0;
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}
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void mylcd_init(void)
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{
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char init_value = 0x3F;
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mylcd_write_byte(0);
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enable0 = 1;
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enable1 = 1;
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LCD_RS0 = 0;
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LCD_EN0 = 0;
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LCD_RW0 = 0;
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LCD_RS0_TRIS = OUTPUT_PIN;
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LCD_EN0_TRIS = OUTPUT_PIN;
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LCD_RW0_TRIS = OUTPUT_PIN;
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LCD_RS1 = 0;
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LCD_EN1 = 0;
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LCD_RW1 = 0;
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LCD_RS1_TRIS = OUTPUT_PIN;
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LCD_EN1_TRIS = OUTPUT_PIN;
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LCD_RW1_TRIS = OUTPUT_PIN;
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/*
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DelayMs(15);
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mylcd_write_byte(init_value);
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mylcd_strobe();
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DelayMs(5);
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mylcd_write_byte(init_value);
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mylcd_strobe();;
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DelayUs(200);
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mylcd_write_byte(init_value);
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mylcd_strobe();
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*/
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//DEM20485 init
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DelayMs(35); //Make sure LCD is initialized
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mylcd_write_byte(0b00110000);
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mylcd_strobe();
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DelayUs(50);
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mylcd_write_byte(0b00001111);
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mylcd_strobe();
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DelayUs(50);
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mylcd_write_byte(0b00000001);
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mylcd_strobe();
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DelayMs(2);
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mylcd_write_byte(0b00000110);
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mylcd_strobe();
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DelayUs(50);
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/*
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mylcd_cmd(0x38);
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mylcd_cmd(0xF); //Display On, Cursor On, Cursor Blink
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mylcd_cmd(0x1); //Display Clear
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mylcd_cmd(0x6); //Entry Mode
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mylcd_cmd(0x80); //Initialize DDRAM address to zero
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/*
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mylcd_cmd(0x02); //Home
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*/
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}
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void mylcd_enable_lcd0(unsigned char enable)
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{
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if (enable)
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enable0 = 1;
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else
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enable0 = 0;
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}
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void mylcd_enable_lcd1(unsigned char enable)
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{
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if (enable)
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enable1 = 1;
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else
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enable1 = 0;
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}
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