?? lcd_back.c
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//******************************************************************************
// File Name : LCD.c
// Author : Steaven
// Created : 2008-07-27
// Modified :
// Revision : V0.0
//******************************************************************************
//PIN DESCRIPTION
//01 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
//GND VCC V0 RS RW EN D0 D1 D2 D3 D4 D5 D6 D7 BLA BLK
//GND +5V V0 PB0 PB1 PB2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 GND +5V
#include "iom16v.h"
#include "DataType.h"
#include "LCD.h"
#include "macros.h"
#define cLCD_X_MAX 64
#define cLCD_Y_MAX 128
//local functions declaration
void Set_DI(INT8U RS);
void Set_RW(INT8U RW);
void Set_EN(INT8U EN);
void Set_CS1(INT8U CS1);
void Set_CS2(INT8U CS2);
void Set_RST(INT8U RST);
void Set_Data(INT8U data);
INT8U Get_Data(void);
void DisplayOnOff(INT8U i);
void SetStartLine(INT8U i);
void LCD_Command_Set_X(INT8U x);
void LCD_Command_Set_Y(INT8U y);
void LCD_Command_WriteByte(INT8U data);
INT8U Read_Byte(void);
void LCD_Reset(void);
void LCD_Clear_Line(INT8U wStartLine,INT8U wEndLine);
void LCD_Init(void);
void WriteWord(INT8U const *disp,INT8U x,INT8U y);
void WriteCharacter(const INT8U *disp,INT8U x,INT8U y,INT8U cs);
void WritePIC(const INT8U *disp);
void LCD_Write_Char(INT8U y,INT8U x,const INT8U *pdata);
void LCD_Write_Dot(INT8U x,INT8U y);
INT8U LCD_Read_Data(INT8U x,INT8U y);
void LCD_Write_Data(INT8U x,INT8U y,INT8U data);
void LCD_Write_Picture(INT8U x1,INT8U y1,INT8U x2,INT8U y2,const INT8U *pdata);
/*
void nop(INT8U cnt)
{
while(cnt--) ;
}
void Delay(INT8U cnt)
{
while(cnt--) ;
}
*/
void Delay_ms(INT16U time)
{
for(;time!=0;time--)
{
Delay(500);
}
}
#define nop(X) {;}
#define Delay(X) {;}
//******************************************************************************
// Function : Set_RS
// Input : RS - RS Control Line Level
// Output : none
// Description : LCD(1602) Low Level Interface Function
//******************************************************************************
void Set_DI(INT8U RS)
{
if(RS == 0)
{
PORTB &= ~0x01;
}
else
{
PORTB |= 0x01;
}
}
//******************************************************************************
// Function : Set_RW
// Input : RW - RW Control Line Level
// Output : none
// Description : Low Level Interface Function
//******************************************************************************
void Set_RW(INT8U RW)
{
if(RW == 0)
{
PORTB &= ~0x02;
}
else
{
PORTB |= 0x02;
}
}
//******************************************************************************
// Function : Set_EN
// Input : RW - RW Control Line Level
// Output : none
// Description : Low Level Interface Function
//******************************************************************************
void Set_EN(INT8U EN)
{
if(EN == 0)
{
PORTB &= ~0x04;
}
else
{
PORTB |= 0x04;
}
}
//******************************************************************************
// Function : Set_CS2
// Input : CS2 - CS2 Control Line Level
// Output : none
// Description : Low Level Interface Function
//******************************************************************************
void Set_CS2(INT8U CS2)
{
if(CS2 == 0)
{
PORTC &= ~0x20;
}
else
{
PORTC |= 0x20;
}
}
//******************************************************************************
// Function : Set_CS1
// Input : CS1 - CS1 Control Line Level
// Output : none
// Description : Low Level Interface Function
//******************************************************************************
void Set_CS1(INT8U CS1)
{
if(CS1 == 0)
{
PORTC &= ~0x40;
}
else
{
PORTC |= 0x40;
}
}
//sbit RST=PC7;
void Set_RST(INT8U RST)
{
if(RST == 0)
{
PORTC &= ~0x80;
}
else
{
PORTC |= 0x80;
}
}
//******************************************************************************
// Function : Set_Data
// Input : data - Data Line Level
// Output : none
// Description : Low Level Interface Function
//******************************************************************************
void Set_Data(INT8U data)
{
PORTA = data;
}
//顯示開關控制命令,i=0開顯示,i=1關顯示//
void DisplayOnOff(INT8U onoff)
{
Set_RW(0);
Set_DI(0);
Set_EN(0);
Set_Data(0x3E + onoff);
nop(10);
Set_EN(1);
nop(10);
Set_EN(0);
}
//設置顯示起始行,i=0~63//
void SetStartLine(INT8U line)
{
Set_RW(0);
Set_DI(0);
Set_EN(0);
Set_Data(0xC0 + line);
nop(10);
Set_EN(1);
nop(10);
Set_EN(0);
}
//設置頁(行)地址,i=0~7//
void LCD_Command_Set_X(INT8U row)
{
Set_RW(0);
Set_DI(0);
Set_EN(0);
Set_Data(0xB8 + row);
nop(10);
Set_EN(1);
nop(10);
Set_EN(0);
}
//設置Y(列)地址,i=0~127//
void LCD_Command_Set_Y(INT8U column)
{
Set_RW(0);
Set_DI(0);
Set_EN(0);
Set_Data(0x40 + column);
nop(10);
Set_EN(1);
nop(10);
Set_EN(0);
}
//寫顯示數據,i為送DDRAM的數據
void LCD_Command_WriteByte(INT8U data)
{
Set_RW(0);
Set_DI(1);
Set_EN(0);
Set_Data(data);
nop(10);
Set_EN(1);
nop(10);
Set_EN(0);
}
INT8U Read_Byte(void)
{
INT8U data;
DDRA = 0x00;
PORTA = 0x00;
Set_EN(0);
Set_RW(1);
Set_DI(1);
// Set_EN(0);
nop(100);
Set_EN(1);
nop(100);
//data = Get_Data();
data = PINA;
Set_EN(0);
return(data);
}
//LCD復位
void LCD_Reset(void)
{
Set_RST(0);
Set_RST(1);
}
//LCD清除顯示行
void LCD_Clear_Line(INT8U wStartLine,INT8U wEndLine)
{
INT8U i,j;
for(i = wStartLine;i <= wEndLine;i++)
{
Set_CS1(1);
Set_CS2(1);
LCD_Command_Set_X(i);
LCD_Command_Set_Y(0);
for(j = 0;j < 64;j++)
{
LCD_Command_WriteByte(0x00);
}
}
}
//LCD初始化
void LCD_Init(void)
{
LCD_Reset();
LCD_Clear_Line(0,7);
DisplayOnOff(1);
SetStartLine(0);
}
//對128*64點陣LCD
//X : 行數 0~3
//Y : 列數 0~15
void LCD_Write_Char(INT8U x,INT8U y,const INT8U *disp)
{
INT8U i;
INT8U x_address;
INT8U y_address;
if((x < 4) && (y < 16))
{
for(i = 0;i < 8;i++)
{
x_address = x << 1;
y_address = (y << 3) + i;
LCD_Write_Data(x_address,y_address,*disp++);
}
for(i = 0;i < 8;i++)
{
x_address = (x << 1) + 1;
y_address = (y << 3) + i;
LCD_Write_Data(x_address,y_address,*disp++);
}
}
}
//對128*64點陣LCD
//X : 行數 0~3
//Y : 列數 0~15
void LCD_Write_Word(INT8U x,INT8U y,const INT8U *disp)
{
INT8U i;
INT8U x_address;
INT8U y_address;
if((x < 4) && (y < 16))
{
for(i = 0;i < 16;i++)
{
x_address = x << 1;
y_address = (y << 3) + i;
LCD_Write_Data(x_address,y_address,*disp++);
}
for(i = 0;i < 16;i++)
{
x_address = (x << 1) + 1;
y_address = (y << 3) + i;
LCD_Write_Data(x_address,y_address,*disp++);
}
}
}
//x1 行 y列
void LCD_Write_Picture(INT8U x1,INT8U y1,INT8U x_length,INT8U y_length,const INT8U *pdata)
{
INT8U x_address;
INT8U y_address;
for(x_address = x1;x_address <= (x_length >> 3) - 1;x_address++)
{
for(y_address = y1;y_address < y1 + y_length;y_address++)
{
LCD_Write_Data(x_address,y_address,*pdata++);
}
}
}
//=========================END OF FILE=========================//
void LCD_Write_Dot(INT8U x,INT8U y)
{
INT8U x_address,y_address;
INT8U data = 0;
if((x < 64) && (y < 128))
{
x_address = x >> 3;
y_address = y;
//data = LCD_Read_Data(x_address,y_address);
LCD_Write_Data(x_address,y_address,data | (1 << (x % 8)));
}
}
INT8U LCD_Read_Data(INT8U x,INT8U y)
{
INT8U data;
if(y < 64)
{
Set_CS1(1);
Set_CS2(0);
LCD_Command_Set_X(x);
LCD_Command_Set_Y(y);
}
else
{
Set_CS1(0);
Set_CS2(1);
LCD_Command_Set_X(x);
LCD_Command_Set_Y(y - 64);
}
data = Read_Byte();
return(data);
}
void LCD_Write_Data(INT8U x,INT8U y,INT8U data)
{
if(y < 64)
{
Set_CS1(1);
Set_CS2(0);
LCD_Command_Set_X(x);
LCD_Command_Set_Y(y);
}
else
{
Set_CS1(0);
Set_CS2(1);
LCD_Command_Set_X(x);
LCD_Command_Set_Y(y - 64);
}
LCD_Command_WriteByte(data);
}
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