📄 3310lcd.c
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#include <avr/io.h>
#include <avr/delay.h>
#include <avr/pgmspace.h>
#include "MAIN.h"
#include "MISC.h"
#include "3310LCD.h"
#include "english_6x8_pixel.h"
/*-----------------------------------------------------------------------
LCD_init : 3310LCD初始化
-----------------------------------------------------------------------*/
void LCD_init(void)
{
PORTB &=~(1<<LCD_nRST); // 产生一个让LCD复位的低电平脉冲
_delay_loop_2(1000*FREQ/4);
PORTB |= (1<<LCD_nRST);
PORTB &=~(1<<LCD_nCE); // 关闭LCD
_delay_loop_2(10*FREQ/4);
PORTB |= (1<<LCD_nCE); // 使能LCD
LCD_write_byte(0x21, 0); // 使用扩展命令设置LCD模式
LCD_write_byte(0x80+0x48, 0); // 设置偏置电压
LCD_write_byte(0x04+0x02, 0); // 温度校正
LCD_write_byte(0x10+0x03, 0); // 1:48
LCD_write_byte(0x20, 0); // 使用基本命令
LCD_clear(); // 清屏
LCD_write_byte(0x0c, 0); // 设定显示模式,正常显示
PORTB &= ~(1<<LCD_nCE); // 关闭LCD
}
/*-----------------------------------------------------------------------
LCD_clear : LCD清屏函数
编写日期 :2004-8-10
最后修改日期 :2004-8-10
-----------------------------------------------------------------------*/
void LCD_clear(void)
{
unsigned int i;
LCD_write_byte(0x0c, 0);
LCD_write_byte(0x80, 0);
for (i=0; i<504; i++)
LCD_write_byte(0, 1);
}
/*-----------------------------------------------------------------------
LCD_set_XY : 设置LCD坐标函数
输入参数:X :0-83
Y :0-5
编写日期 :2004-8-10
最后修改日期 :2004-8-10
-----------------------------------------------------------------------*/
void LCD_set_XY(unsigned char X, unsigned char Y)
{
LCD_write_byte(0x40 | Y, 0); // column
LCD_write_byte(0x80 | X, 0); // row
}
/*-----------------------------------------------------------------------
LCD_write_char : 显示英文字符
输入参数:c :显示的字符;
编写日期 :2004-8-10
最后修改日期 :2004-8-10
-----------------------------------------------------------------------*/
void LCD_write_char(unsigned char c)
{
unsigned char line;
const unsigned char *map= &font6x8[0][0];
c -= 32;
map+=c*6;
line=6;
while (line--)
LCD_write_byte(pgm_read_byte(map++), 1);
}
/*-----------------------------------------------------------------------
LCD_write_english_String : 英文字符串显示函数
输入参数:*s :英文字符串指针;
X、Y : 显示字符串的位置,x 0-83 ,y 0-5
编写日期 :2004-8-10
最后修改日期 :2004-8-10
-----------------------------------------------------------------------*/
void LCD_write_english_string(unsigned char X,unsigned char Y,unsigned char *s)
{
LCD_set_XY(X,Y);
while (*s)
{
LCD_write_char(*s);
s++;
}
}
/*-----------------------------------------------------------------------
LCD_write_byte : 使用SPI接口写数据到LCD
输入参数:data :写入的数据;
command :写数据/命令选择;
-----------------------------------------------------------------------*/
void LCD_write_byte(unsigned char data, unsigned char command)
{
PORTB&=~(1<<LCD_nCE) ; // 使能LCD
if (command==0)
PORTB&=~(1<<LCD_DnC); // 传送命令
else
PORTB|= (1<<LCD_DnC); // 传送数据
SPDR=data; // 传送数据到SPI寄存器
while ((SPSR & (1<<SPIF)) == 0)
; // 等待数据传送完毕
PORTB|= (1<<LCD_nCE) ; // 关闭LCD
}
//写全屏
void LCD_draw_Screen(const unsigned char *map)
{
unsigned int i;
LCD_set_XY(0,0);
for(i=0; i<504; i++)
{
LCD_write_byte(pgm_read_byte(map++), 1);
}
}
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