金沙js5线路(中国)有限公司:台湾麦肯单片机(Micon MDT单片机)亚太地区A级代理商
QLdsPIC3]LCD12864[C30+dsPIC30F6014A]
//实验目的:熟悉12864LCD的使用
//12864LCD带中文字库
//编程让12864LCD显示公司LOGO和公司名字
//硬件设置:
//关断所有拨码开关。
#include //dsPIC30F6014标准头文件
_FOSC(CSW_FSCM_OFF & XT_PLL4); //4倍频晶振,Failsafe 时钟关闭
_FWDT(WDT_OFF); //关闭看门狗定时器
_FBORPOR(PBOR_OFF & MCLR_EN); //掉电复位禁止,MCLR复位使能。
_FGS(CODE_PROT_OFF); //代码保护禁止
#define di LATBbits.LATB4 //命令/数据选择
#define rw LATBbits.LATB5 //读/写选择
#define e LATBbits.LATB6 //使能
#define psb LATBbits.LATB2 //8位/4位并口选择
#define rst LATBbits.LATB7 //复位
unsigned int __attribute__((address(0x900))) temp;
unsigned int __attribute__((address(0x902))) temp1;
const unsigned char TAB1[ ]={ //定义显示图片的数据表
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0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF, 0X3E,0XF3,0XE7,0X08,0X44,0X21,0X14,0XE1,
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0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF, 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X01,
0X7F,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF, 0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFE,
};
unsigned int lcd_x; //X地址
unsigned int lcd_y; //Y地址
// bit busy; //忙标志位
void init(); //系统初始函数
void lcd_init(); //LCD初始函数
void clear_p(); //清屏函数
void han_wr2a(); //写函数
void wr_zb(); //写准备函数
void qushu(); //查表函数
void send_d(unsigned char x); //写一字节数据函数
void send_i(unsigned char x); //写一字节命令函数
void chk_busy(); //查LCD忙函数
void delay();
//-------------------------------------------
int main(void)
{
init(); //系统初始化
lcd_init(); //LCD初始化
clear_p(); //清除显示
qushu(); //写数据到LCD显示
while(1);
}
//-------------------------------------------
void init()
{
TRISB=0X0000; //设置B口为输出
TRISD=0X0000; //设置D口为输出
}
//-------------------------------------------
void lcd_init()
{
rst=0; //复位LCD
delay();
rst=1; //LCD正常工作
delay();
psb=1; //8位并行通信
send_i(0x30); //基本操作指令
send_i(0x01); //关显示
send_i(0x06); //指定在写入或读取时,光标的移动方向
send_i(0x0c); //开显示,关光标,不闪烁
}
//-------------------------------------------
void wr_zb()
{
send_i(0x34); //扩展操作指令
send_i(lcd_y); //设置Y地址
send_i(lcd_x); //设置X地址
send_i(0x30); //基本操作指令
}
//-------------------------------------------
void clear_p()
{
send_i(0x1); //清除显示
send_i(0x34); //扩展操作指令
send_i(0x30); //基本操作指令
}
//------------------------------------------
void qushu()
{
unsigned char i,j,k; //定义临时变量
temp=0; //查表偏移地址
lcd_x=0x0080; //上半屏X地址80H
for(i=0;i<2;i++) //共两屏
{
lcd_y=0x0080; //每一行的Y地址80H(即顶格显示)
for(j=0;j<32;j++) //每半屏共20H行
{
wr_zb(); //写准备(设置X地址和Y地址)
for(k=0;k<16;k++) //每一行16字节(因为顶格写)
{
temp1=TAB1[temp]; //查表获取显示数字
send_d(temp1); //送LCD显示
temp++; //查表偏移地址+1
}
lcd_y++; //送下一行数据
send_i(0x0036); //扩展指令操作:图形显示开
send_i(0x0030); //基本指令操作
}
lcd_x=0X0088; //下半屏X地址
}
}
//-------------------------------------------
void send_d(unsigned char x)
{
chk_busy(); //判断LCD是否忙
di=1; //总线上是数据
delay();
rw=0; //写操作
delay();
PORTD=x; //数据送总线
e=1; //使能
delay();
e=0;
delay();
}
//--------------------------------------------
void send_i(unsigned char x)
{
chk_busy(); //判断忙信号
di=0; //总线上是命令
delay();
rw=0; //写操作
delay();
PORTD=x; //数据送总线
e=1; //使能
delay();
e=0;
delay();
}
//-------------------------------------------
void chk_busy()
{
// busy=1; //先置忙信号
TRISD=0Xffff; //更改总线方向为输入
di=0; //总线上为命令
delay();
rw=1; //读操作
delay();
while(PORTDbits.RD7)
{
delay();
delay();
e=1;
delay();
delay();
e=0;
}
e=0;
TRISD=0X0000; //总线还原为输出
}
//-------------------------------------------
void delay()
{
int m;
for(m=0;m<10;m++)
{;}
}