📄 3310.c
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/************************************************************/
/* 3310 Code for M32L */
/* By pasyong */
/* 2006-4 */
/* Base ICC6.31A */
/************************************************************/
#include <iom32v.h>
#include <macros.h>
#include "english_6x8_pixel.h"
#define LCD_PORT PORTC
#define LCD_DC BIT(0)
#define LCD_CE BIT(1)
#define LCD_RST BIT(2)
void delay_1us(void) //1us延时函数
{
asm("nop");
}
void lcd_port()
{
DDRC=0x03;
PORTC|=LCD_CE|LCD_DC;
DDRD=0xff;
PORTC|=LCD_RST;
}
/*-----------------------------------------------------------------------
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)
{
LCD_PORT&= ~LCD_CE ; // 使能LCD
if (command == 0)
{
LCD_PORT&= ~LCD_DC ; // 传送命令
}
else
{
LCD_PORT|= LCD_DC ; // 传送数据
}
SPDR = data; // 传送数据到SPI寄存器
while ((SPSR & 0x80) == 0); // 等待数据传送完毕
LCD_PORT|= LCD_CE ; // 关闭LCD
}
/*-----------------------------------------------------------------------
LCD_set_XY : 设置LCD坐标函数
输入参数:X :0-83
Y :0-5
-----------------------------------------------------------------------*/
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;
-----------------------------------------------------------------------*/
void LCD_write_char(unsigned char c)
{
unsigned char line;
c -= 32;
for (line=0; line<6; line++)
LCD_write_byte(font6x8[c][line], 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
-----------------------------------------------------------------------*/
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s)
{
LCD_set_XY(X,Y);
while (*s)
{
LCD_write_char(*s);
s++;
}
}
/*-----------------------------------------------------------------------
LCD_clear : LCD清屏函数
-----------------------------------------------------------------------*/
void LCD_clear(void)
{
unsigned int i;
LCD_write_byte(0x0c, 0); //普通显示模式
LCD_write_byte(0x80, 0); //设置RAM的X地址
for (i=0; i<504; i++)
LCD_write_byte(0, 1); //写0数据
}
/*-----------------------------------------------------------------------
LCD_init : 3310LCD初始化
-----------------------------------------------------------------------*/
void LCD_init(void)
{
PORTD &= ~LCD_RST; // 产生一个让LCD复位的低电平脉冲
delay_1us();
PORTD |= LCD_RST;
delay_1us();
LCD_write_byte(0x21, 0); // 使用扩展命令设置LCD模式
LCD_write_byte(0xc8, 0); // 设置偏置电压
LCD_write_byte(0x06, 0); // 温度校正
LCD_write_byte(0x13, 0); // 1:48
delay_1us();
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
}
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