📄 op_lcd.c
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/*
* edited by dingnan, DUT
*2003.09.16
*Op_LCD is used to operate the 12864 LCD;
*/
/*
* D/I :p1.5
* R/W :p1.6
* E :p1.7
* DB0~DB7 :p2.0~p2.7
* CS1 :p3.0
* CS2 :p3.1
* RST :be linked to high;
* VEE :be offered by it self;
*/
#include <msp430x14x.h>
#include "Op_LCD.h"
#include "Main.h"
#include "Init.h"
//#include "character.h"
void delay(unsigned int con)
{
unsigned int temp;
for(temp = 0 ;temp < con ; temp++)
{
}
}
//check the BF ; 1:busy; 0:idle;
//lr: lr=0 left; lr=1 right;
//used inside;
unsigned char read_BF(unsigned char lr)
{
unsigned char condition;
if(lr==0)
{
P3OUT |= 0x01; //set cs1=1;
P3OUT &= 0xFD; //set cs2=0;
}
else
{
P3OUT |= 0x02; //set cs2=1;
P3OUT &= 0xFE; //set cs1=0;
}
//delay(10);
P1OUT |= 0x80; //E = 1;
P1OUT &= 0x7F; //E = 0;
delay(30);
P1OUT &= 0xBF; //R/W = 0;
P1OUT |= 0x40; //R/W = 1;
P1OUT &= 0xDF; //D/I =0;
delay(30);
P1OUT |= 0x80; //E = 1;
//delay(10);
P2DIR = 0x00; // 0000 0000 change p2 to input
delay(10);
condition = P2IN;
if((condition & 0x80) == 0x00) //check BF
{
P2DIR = 0xFF; // 1111 1111 rechange p2 to output
return 0;
}
/*
{
if((condition & 0x20) == 0x00) //check DISP ON/OFF
{
if((condition & 0x10) == 0x00) //check RET;
{
return 0;
}
else
return 1;
}
else
return 1;
}
*/
else
{
P2DIR = 0xFF; // 1111 1111 rechange p2 to output
return 1;
}
}
//cs1 = 1; cs2= 0;
//used inside;
void commond_left(unsigned char commond)
{
unsigned char flag = 1;
P3OUT |= 0x01; //set cs1=1;
P3OUT &= 0xFD; //set cs2=0;
while(flag)
{
flag = read_BF(0);
}
//open the LCD (0 0 0011 1111);
flag = 1;
P1OUT |= 0x80; //E = 1;
P1OUT &= 0x7F; //E = 0;
delay(30);
//P1OUT |= 0x40; //R/W = 1;
P1OUT &= 0xBF; //R/W = 0;
P1OUT &= 0xDF; //D/I =0;
delay(10);
P1OUT |= 0x80; //E = 1;
P2OUT = commond;
//delay(10);
P1OUT &= 0x7F; //E = 0;
delay(30);
}
//cs1 = 0; cs2= 1;
//used inside;
void commond_right(unsigned char commond)
{
unsigned char flag =1;
P3OUT |= 0x02; //set cs2=1;
P3OUT &= 0xFE; //set cs1=0;
while(flag)
{
flag = read_BF(1);
}
flag = 1;
P1OUT |= 0x80; //E = 1;
P1OUT &= 0x7F; //E = 0;
delay(30);
// P1OUT |= 0x40; //R/W = 1;
P1OUT &= 0xBF; //R/W = 0;
P1OUT &= 0xDF; //D/I =0;
delay(10);
P1OUT |= 0x80; //E = 1;
P2OUT = commond;
//delay(10);
P1OUT &= 0x7F; //E = 0;
delay(30);
}
//disp the data on the left_disp;
//used inside;
void data_left(unsigned char data)
{
unsigned char flag = 1;
P3OUT |= 0x01; //set cs1=1;
P3OUT &= 0xFD; //set cs2=0;
while(flag)
{
flag = read_BF(0);
}
flag = 1;
P1OUT |= 0x80; //E = 1;
P1OUT &= 0x7F; //E = 0;
delay(30);
P1OUT |= 0x40; //R/W = 1;
P1OUT &= 0xBF; //R/W = 0;
P1OUT |= 0x20; //D/I =1;
delay(30);
P1OUT |= 0x80; //E = 1;
P2OUT = data;
P1OUT &= 0x7F; //E = 0;
delay(30);
}
//disp the data on the right_disp
//used inside;
void data_right(unsigned char data)
{
unsigned char flag = 1;
P3OUT |= 0x02; //set cs1=1;
P3OUT &= 0xFE; //set cs2=0;
while(flag)
{
flag = read_BF(1);
}
flag = 1;
P1OUT |= 0x80; //E = 1;
P1OUT &= 0x7F; //E = 0;
delay(30);
P1OUT |= 0x40; //R/W = 1;
P1OUT &= 0xBF; //R/W = 0;
P1OUT |= 0x20; //D/I =1;
delay(30);
P1OUT |= 0x80; //E = 1;
P2OUT = data;
P1OUT &= 0x7F; //E = 0;
delay(30);
}
//test , disp black_screen;
void fill(void)
{
unsigned char pos_x, pos_y,i;
for(pos_x=0; pos_x<8; pos_x++)
{
commond_left(pos_x+0xB8);
commond_right(pos_x+0xB8);
commond_left(0x40);
commond_right(0x40);
for(i=0;i<64;i++)
{
data_left(0xff);
data_right(0xff);
}
}
}
void cls(void)
{
unsigned char pos_x, pos_y,i;
for(pos_x=0; pos_x<8; pos_x++)
{
commond_left(pos_x+0xB8);
commond_right(pos_x+0xB8);
commond_left(0x40);
commond_right(0x40);
for(i=0;i<64;i++)
{
data_left(0x00);
data_right(0x00);
}
}
}
//pos_x:(0~7) 相当于y轴；
//pos_y:(0~125)相当于x轴；（0~63 cs1=1 64~125 cs2=1）
void set_cursor(unsigned char pos_x,unsigned char pos_y)
{
if(pos_y < 64)
{
commond_left(pos_x+0xb8);
commond_left(pos_y|0x40);
}
else
{
commond_right(pos_x+0xb8);
commond_right(pos_y-64+0x40);
}
}
//disp_num : be used to disp the 8*8 charator;
void disp_num(unsigned char pos_x,unsigned char pos_y,unsigned char *data)
{
unsigned char i,temp;
//flag = 1; //用于标志已经更改过地址；
temp = pos_y;
set_cursor(pos_x,pos_y);
for(i=0;i<8;i++)
{
if(temp <64)
{
set_cursor(pos_x,temp);
data_left(data[i]);
}
else
{
if(temp == 64)
{
set_cursor(pos_x,64);
data_right(data[i]);
}
else
{
if(temp == 128)
{
set_cursor(pos_x+1,0);
data_left(data[i]);
temp = 0;
}
else
{
set_cursor(pos_x,temp);
data_right(data[i]);
}
}
}
temp++;
}
}
//pos_x: 相当于纵坐标；
//pos_y: 相当于横坐标；
//此程序段用于显示16*16的字符；
void disp_character(unsigned char pos_x,unsigned char pos_y,unsigned char *data)
{
char i,temp;
temp = pos_y;
set_cursor(pos_x,pos_y);
for(i=0;i<16;i++)
{
if(temp <64)
{
data_left(data[i]);
}
else
{
if(temp == 64)
{
set_cursor(pos_x,64);
data_right(data[i]);
}
else
{
if(temp == 128)
{
set_cursor(pos_x+2,0);
data_left(data[i]);
pos_y = 0;
}
else
data_right(data[i]);
}
}
temp++;
}
set_cursor(pos_x+1,pos_y);
temp = pos_y;
for(i=0;i<16;i++)
{
if(temp <64)
{
data_left(data[16+i]);
}
else
{
if(temp == 64)
{
set_cursor(pos_x+1,64);
data_right(data[16+i]);
}
else
{
if(temp == 128)
{
set_cursor(pos_x+3,0);
data_left(data[16+i]);
pos_y = 0;
}
else
data_right(data[16+i]);
}
}
temp++;
}
}
void disp_logo1(unsigned char *data1)
{
char pos_x,pos_y,temp;
pos_x = 0;
pos_y = 0;
temp = 0;
set_cursor(pos_x,pos_y);
for(pos_x=0;pos_x<8;pos_x++)
{
set_cursor(pos_x,0);
for(pos_y=0;pos_y<128;pos_y++)
{
if(pos_y<64)
{
set_cursor(pos_x,pos_y);
data_left(data1[128*pos_x+pos_y]);
}
else
{
set_cursor(pos_x,pos_y);
data_right(data1[128*pos_x+pos_y]);
}
}
}
//disp_num(pos_x,pos_y,(unsigned char *)num[0]);
}
void init_LCD(void)
{
// unsigned char flag = 1;
// initialize the ports;
P1DIR = 0xE0; // 1110 0000
P2DIR = 0xFF; // 1111 1111
P3DIR = 0x03; // 0000 0011
delay(10000);
commond_left(0x3F); //open the LCD (0 0 0011 1111);
commond_right(0x3F);
commond_left(0xC0); //(0 0 1100 1000)set the 0th line to be the first line;(0~63)
commond_right(0xC0);
}
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