📄 123.c
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/*
KS0108 128*64 LCD C语言驱动
参考ICCAVR资料和网上的资料改写
LCD引脚定义
1---GND
2---VCC
3---VLCD
4---D/I
5---R/W
6---E
7到14 D0-D7
15--CS1
16--CS2
17--RESET
18--VEE
19--SW
20--NC
*/
#include <iom16v.h>
#include <macros.h>
/* 当前行、列存储，行高16点，列宽8点 */
unsigned char CurOffset,CurRow,CurPage,CurCol;
/* 常量定义 */
#define LCD_STATUS_BUSY 0x80
#define START_LINE0 0xc0
#define DISPLAY_ON 0x3f
#define DISPLAY_OFF 0x3e
#define PARA1 0x40
//PORTA---数据口 PORTB----控制口
#define LCD_DIR_PORT DDRA
#define LCD_IP_PORT PINA
#define LCD_OP_PORT PORTA
#define LCD_EN_PORT PORTC
#define LCD_CS2_PORT PORTC
#define LCD_CS1_PORT PORTC
#define LCD_RW_PORT PORTC
#define LCD_DI_PORT PORTC
#define LCD_DI_BIT BIT(7)//0x80
#define LCD_RW_BIT BIT(6)//0x40
#define LCD_EN_BIT BIT(5)//0x20
#define LCD_CS1_BIT BIT(4)//0x10
#define LCD_CS2_BIT BIT(3)//0x08
#define SET_LCD_E LCD_EN_PORT |= LCD_EN_BIT //LCD使能
#define CLEAR_LCD_E LCD_EN_PORT &= ~LCD_EN_BIT //LCD禁止
//以下可能出错，数据指令接口
#define SET_LCD_DATA LCD_DI_PORT |= LCD_DI_BIT //选择数据端口
#define SET_LCD_CMD LCD_DI_PORT &= ~LCD_DI_BIT //选择指令端口
#define SET_LCD_READ LCD_RW_PORT |= LCD_RW_BIT //读模式
#define SET_LCD_WRITE LCD_RW_PORT &= ~LCD_RW_BIT //写模式
#define SET_LCD_CS2 LCD_CS2_PORT |= LCD_CS2_BIT //右屏选择禁止
#define CLEAR_LCD_CS2 LCD_CS2_PORT &= ~LCD_CS2_BIT //右屏选择使能
#define SET_LCD_CS1 LCD_CS1_PORT |= LCD_CS1_BIT //左屏选择禁止
#define CLEAR_LCD_CS1 LCD_CS1_PORT &= ~LCD_CS1_BIT //左屏选择使能
#define LEFT 0
#define RIGHT 1
#define CMD 0
#define DATA 1
void LCD_BUSY(unsigned char lr) //判断忙标志。。
{
unsigned char status;
CLI();
if(lr==LEFT)
{
//选择左半屏。。
CLEAR_LCD_CS2; //cs2=0
SET_LCD_CS1; //cs1=1
}
else
{
//选择右半屏。。
SET_LCD_CS2; //cs2=1
CLEAR_LCD_CS1; //cs1=0
}
SET_LCD_CMD;//选择指令端口。。
LCD_DIR_PORT = 0x00;//数据口方向设置。。
LCD_OP_PORT = 0xff;//数据口输出高电平。。
SET_LCD_READ;//读模式。。
SET_LCD_E;//LCD使能。。
asm("nop"); asm("nop");
asm("nop"); asm("nop");
while((LCD_IP_PORT) & LCD_STATUS_BUSY)//判断LCD是否忙。。
{
CLEAR_LCD_E;//LCD禁止。。
asm("nop"); asm("nop");
asm("nop"); asm("nop");
SET_LCD_E;//LCD使能。。
asm("nop"); asm("nop");
asm("nop"); asm("nop");
}
CLEAR_LCD_E;
SET_LCD_WRITE;//写模式。。
LCD_OP_PORT = 0xff;//写入显示RAM
SEI();
}
void write_LCD(unsigned char lr,unsigned char cd,unsigned char data) /*写入指令或数据*/
{
CLI();
LCD_BUSY(lr);
if(cd==CMD) SET_LCD_CMD;
else SET_LCD_DATA;
SET_LCD_WRITE;
SET_LCD_E;
LCD_DIR_PORT = 0xff;
LCD_OP_PORT = data;
asm("nop"); asm("nop");
asm("nop"); asm("nop");
CLEAR_LCD_E;
LCD_OP_PORT = 0xff;
SEI();
}
unsigned char read_LCD(unsigned char lr) /* 读显示数据 */
{
unsigned char data;
CLI();
LCD_BUSY(lr);
SET_LCD_DATA;
LCD_DIR_PORT = 0x00;
LCD_OP_PORT = 0xff;
SET_LCD_READ;
SET_LCD_E;
asm("nop"); asm("nop");
asm("nop"); asm("nop");
data=LCD_IP_PORT;
CLEAR_LCD_E;
SET_LCD_WRITE;
LCD_BUSY(lr);
SET_LCD_DATA;
LCD_DIR_PORT = 0x00;
LCD_OP_PORT = 0xff;
SET_LCD_READ;
SET_LCD_E;
asm("nop"); asm("nop");
asm("nop"); asm("nop");
data=LCD_IP_PORT;
CLEAR_LCD_E;
SET_LCD_WRITE;
SEI();
return data;
}
void set_start_line_L(unsigned char line) /*设置显示起始行*/ //0-63
{
write_LCD(LEFT,CMD,0xc0|line);
}
void set_start_line_R(unsigned char line) /*设置显示起始行*/ //0-63
{
write_LCD(RIGHT,CMD,0xc0|line);
}
void set_page_L(unsigned char page) /*设置X地址 设置页*/ //0-7
{
write_LCD(LEFT,CMD,0xb8|page);
}
void set_page_R(unsigned char page) /*设置X地址 设置页*/ //0-7
{
write_LCD(RIGHT,CMD,0xb8|page);
}
void set_col_addr_L(unsigned char col) /*设置Y地址*/ //0-63
{
write_LCD(LEFT,CMD,0x40|col);
}
void set_col_addr_R(unsigned char col) /*设置Y地址*/ //0-63
{
write_LCD(RIGHT,CMD,0x40|col);
}
void init_lcd(void) /*初始化函数*/
{
set_start_line_L(0); /*显示起始行为0*/
set_start_line_R(0); /*显示起始行为0*/
write_LCD(LEFT,CMD,DISPLAY_ON); /* 开显示 */
write_LCD(RIGHT,CMD,DISPLAY_ON); /* 开显示 */
}
void clr_lcd(void) /*清屏函数*/
{
unsigned char pages,i;
for(pages=0;pages<8;pages++)
{
set_page_L(pages); /* X 页地址 */
set_page_R(pages); /* X 页地址 */
for(i=0;i<64;i++)
{
set_col_addr_L(i);//Y
set_col_addr_R(i);//Y
write_LCD(LEFT,DATA,0x0);
write_LCD(RIGHT,DATA,0x0);
}
}
}
/*************************************/
/* 绘点函数 */
/*************************************/
void pixel(unsigned char xx,unsigned char yy,unsigned char flag)
{
unsigned int y,ch;
ch=yy%8; //余数
y=1;
for(;ch!=0;)
{
y=y*2;
ch--;
}
if(xx<64)
{
set_page_L(yy/8);
set_col_addr_L(xx);
ch=read_LCD(LEFT);
set_col_addr_L(xx);
if(flag)
write_LCD(LEFT,DATA,ch|y);
else
{
y=~y;
ch&=y;
write_LCD(LEFT,DATA,ch|y);
}
}
else
{
set_page_R(yy/8);
set_col_addr_R(xx-64);
ch=read_LCD(RIGHT);
set_col_addr_R(xx-64);
if(flag)
write_LCD(RIGHT,DATA,ch|y);
else
{
y=~y;
ch&=y;
write_LCD(RIGHT,DATA,ch|y);
}
}
}
//ASCII 字模宽度及高度
#define ASC_CHR_WIDTH 8
#define ASC_CHR_HEIGHT 12
typedef struct typFNT_ASC16 /* 汉字字模显示数据结构 */
{
char Index[1];
char Msk[16];
};
struct typFNT_ASC16 const ASC_16[] = { /* 显示为8*16 Curier 10 常规*/
"1",0x00,0x00,0x08,0x08,0xFC,0x00,0x00,0x00,0x00,0x00,0x04,0x04,0x07,0x04,0x04,0x00,
"2",0x00,0x00,0x08,0x04,0x84,0x44,0x38,0x00,0x00,0x00,0x06,0x05,0x04,0x04,0x04,0x00,
"3",0x00,0x00,0x08,0x04,0x44,0x44,0xB8,0x00,0x00,0x00,0x02,0x04,0x04,0x04,0x03,0x00,
"4",0x00,0x00,0x80,0x60,0x18,0xFC,0x00,0x00,0x00,0x00,0x01,0x01,0x05,0x07,0x05,0x00,
"5",0x00,0x00,0x7C,0x44,0x44,0x44,0x84,0x00,0x00,0x00,0x02,0x04,0x04,0x04,0x03,0x00,
"6",0x00,0x00,0xF0,0x48,0x44,0x44,0x80,0x00,0x00,0x00,0x03,0x04,0x04,0x04,0x03,0x00,
"7",0x00,0x00,0x0C,0x04,0x84,0x64,0x1C,0x00,0x00,0x00,0x00,0x06,0x01,0x00,0x00,0x00,
"8",0x00,0x00,0xB8,0x44,0x44,0x44,0xB8,0x00,0x00,0x00,0x03,0x04,0x04,0x04,0x03,0x00,
"9",0x00,0x00,0x38,0x44,0x44,0x44,0xF8,0x00,0x00,0x00,0x00,0x04,0x04,0x02,0x01,0x00,
"0",0x00,0x00,0xF8,0x04,0x04,0x04,0xF8,0x00,0x00,0x00,0x03,0x04,0x04,0x04,0x03,0x00,
".",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x06,0x00,0x00,0x00,
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