#include "includes.h"
#include "12864.h"
unsigned char table[]="重庆大学电子竞赛";
/*************************************************************/
/*************LCD显示函数************************************/
/*******ns级别延时********************************************/
void Delay_nus(unsigned int nCount)
{
unsigned int j;
while(nCount--)
{
j=8;
while(j--);
}
}
/*******ms级别延时********************************************/
void Delay_mus(unsigned int nCount)
{
while(nCount--)
Delay_nus(1100);
}
/*******转接函数********************************************/
void data_change(unsigned char u){
if(u&0x01)GPIO_SetBits(GPIOC, GPIO_Pin_0); else GPIO_ResetBits(GPIOC, GPIO_Pin_0);
if(u&0x02)GPIO_SetBits(GPIOC, GPIO_Pin_1); else GPIO_ResetBits(GPIOC, GPIO_Pin_1);
if(u&0x04)GPIO_SetBits(GPIOC, GPIO_Pin_2); else GPIO_ResetBits(GPIOC, GPIO_Pin_2);
if(u&0x08)GPIO_SetBits(GPIOC, GPIO_Pin_3); else GPIO_ResetBits(GPIOC, GPIO_Pin_3);
if(u&0x10)GPIO_SetBits(GPIOC, GPIO_Pin_4); else GPIO_ResetBits(GPIOC, GPIO_Pin_4);
if(u&0x20)GPIO_SetBits(GPIOC, GPIO_Pin_5); else GPIO_ResetBits(GPIOC, GPIO_Pin_5);
if(u&0x40)GPIO_SetBits(GPIOC, GPIO_Pin_6); else GPIO_ResetBits(GPIOC, GPIO_Pin_6);
if(u&0x80)GPIO_SetBits(GPIOC, GPIO_Pin_7); else GPIO_ResetBits(GPIOC, GPIO_Pin_7);
}
/**************数据口浮空输入************************************/
void DDRC_IN(){
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3
|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/**************数据口推挽输出************************************/
void DDRC_OUT(){
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3
|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/*******读忙态函数********************************************/
void check_busy(){
unsigned int busy;
DDRC_IN();
RS_CLR;
RW_SET;
EN_SET;
//busy=GPIO_ReadInputData(GPIOC) & 0x0080;
while(GPIO_ReadInputData(GPIOC)&0x0080);
EN_CLR;
DDRC_OUT();
}
/*******写命令函数********************************************/
void write_12864com(unsigned char com)
{ check_busy();
RW_CLR;
RS_CLR;
Delay_nus(500);
//DATA_IO=com;
data_change(com);
EN_SET;
Delay_nus(1000);
EN_CLR;
Delay_nus(1000);
}
/*******写数据函数********************************************/
void write_12864dat(unsigned char dat)
{ check_busy();
RW_CLR;
RS_SET;
Delay_nus(500);
//DATA_IO=dat;
data_change(dat);
EN_SET;
Delay_nus(1000);
EN_CLR;
Delay_nus(1000);
}
/****读数据函数*************************************************/
unsigned char u8_Lcd12864ReadByte_f( void )
{
unsigned char byReturnValue ;
check_busy();
DDRC_IN();
RS_SET;
RW_SET;
EN_CLR;
Delay_nus(10);
EN_SET;
byReturnValue=(unsigned char)(GPIO_ReadInputData(GPIOC)&0x0080);
EN_CLR;
DDRC_OUT();
return byReturnValue ;
}
/*******12864初始化函数********************************************/
void init12864lcd(void)
{
Delay_mus(500);
write_12864com(0x30);
Delay_nus(500);
write_12864com(0x30);
Delay_nus(500);
write_12864com(0x0c);
Delay_nus(500);
write_12864com(0x01);
Delay_nus(25);
// write_12864com(0x06);
// Delay_nus(2500);
// write_12864com(0x0c);
Delay_nus(500);
}
/*******显示函数********************************************/
void display(void)
{
unsigned char i;
write_12864com(0x80);
for(i=0;i<14;i++)
{
write_12864dat(table[i]);
Delay_mus(50);
}
}
/****清除显示*************************************************/
void Clean_12864_GDRAM(void)
{
unsigned char x,y;
write_12864com(0x34);
write_12864com(0x36); //需要两次，本次设置扩展指令集。
for (y=0;y<32;y++)
{
write_12864com(0x80+y); //设置y=1000+00xx，y+1则往下一行
write_12864com(0x80); //设置x=1000 0000
for (x=0;x<16;x++)
{
write_12864dat(0x00); //高字节数据
write_12864dat(0x00); //低字节数据
}
}
}
/****画点函数1*************************************************/
void v_Lcd12864DrawPoint_f(unsigned char x,unsigned char y,unsigned char Color )
{
unsigned char Y,Row , Tier , Tier_bit ;
unsigned char ReadOldH, ReadOldL ;
write_12864com(0x34);
Y=y;
Tier=x>>4;
Tier_bit=x&0x0f;
if(Y<32)
{
Row=Y;
}
else
{
Row=Y-32;
Tier+=8;
}
write_12864com( Row+0x80);
write_12864com( Tier+0x80);
u8_Lcd12864ReadByte_f();
ReadOldH=u8_Lcd12864ReadByte_f();
ReadOldL=u8_Lcd12864ReadByte_f();
write_12864com(Row+0x80);
write_12864com(Tier+0x80);
if(Tier_bit<8)
{
switch(Color)
{
case 0 : ReadOldH&=(~(0x01<<(7-Tier_bit))); break;
case 1 : ReadOldH|=(0x01<<(7-Tier_bit)); break;
case 2 : ReadOldH^=(0x01<<(7-Tier_bit)); break;
default : break ;
}
write_12864dat( ReadOldH ) ;
write_12864dat( ReadOldL ) ;
}
else
{
switch(Color)
{
case 0 : ReadOldL &= (~( 0x01 << ( 15 - Tier_bit ))) ; break ;
case 1 : ReadOldL |= ( 0x01 << ( 15 - Tier_bit )) ; break ;
case 2 : ReadOldL ^= ( 0x01 << ( 15 - Tier_bit )) ; break ;
default : break ;
}
write_12864dat( ReadOldH ) ;
write_12864dat( ReadOldL ) ;
}
write_12864com(0x36);
write_12864com(0x30);
}
/****画点函数2*************************************************/
void LCD_set_dot(unsigned char px,unsigned char py) {
unsigned char x,y,x_byte,x_bit,y_byte,y_bit,tmph,tmpl;
x=px&0x7f;
y=py&0x3f;
x_byte=x/16;
x_bit=x&0x0f;
y_byte=y/32;
y_bit=y&0x1f;
write_12864com(0x36);
write_12864com(0x80+y_bit);
write_12864com(0x80+x_byte+8*y_byte);
u8_Lcd12864ReadByte_f();
//Delay(2);
tmph=u8_Lcd12864ReadByte_f();
tmpl=u8_Lcd12864ReadByte_f();
//Delay(20);
write_12864com(0x80+y_bit);
write_12864com(0x80+x_byte+8*y_byte);
//Delay(20);
if(x_bit<8)
{ write_12864dat(tmph|(0x01<<(7-x_bit)));
write_12864dat(tmpl);
}
else
{ write_12864dat(tmph);
write_12864dat(tmpl|(0x01<<(15-x_bit)));
}
// write_12864com(0x36);
write_12864com(0x30);
}
/*******画横线函数*******************************************/
void draw_Rline(unsigned char px,unsigned char py,unsigned char n,unsigned char xu){
unsigned char i,j,x,y,x_byte,x_bit,y_byte,y_bit;
write_12864com(0x36);
x=px&0x7f; //可选择起始点，长度，虚线或者实线
y=py&0x3f;
x_byte=x/16;
x_bit=x&0x0f;
y_byte=y/32;
y_bit=y&0x1f;
write_12864com(0x80+y_bit);
write_12864com(0x80+8*y_byte+x_byte);
for(i=0;i<n;i++){
if(xu) write_12864dat(0x55);
else write_12864dat(0xff);
}
}
/*******画竖线函数*******************************************/
void draw_Rline(unsigned char px,unsigned char py,unsigned char n,unsigned char xu){
unsigned char i,j,x,y,x_byte,x_bit,y_byte,y_bit;
write_12864com(0x36);
x=px&0x7f; //可选择起始点，长度，虚线或者实线
y=py&0x3f;
x_byte=x/16;
x_bit=x&0x0f;
y_byte=y/32;
y_bit=y&0x1f;
write_12864com(0x80+y_bit);
write_12864com(0x80+8*y_byte+x_byte);
for(i=0;i<n;i++){
if(xu) write_12864dat(0x55);
else write_12864dat(0xff);
}
}
/*******画边框函数*******************************************/
void draw_side(){
unsigned char i,j;
write_12864com(0x80);
for(i=0;i<16;i++){write_12864dat(0x55);} //上边框边框
draw_Rline(0,63,16,1); //下边框
write_12864com(0x98);
for(i=0;i<16;i++){write_12864dat(0x55);} //下边框
}
/*******12864端口配置函数*******************************************/
void LCD12864_Config(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOC , ENABLE);
//E口2 3 4 6口做RS PSB RW EN信号线 推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
//C口0~7 做8位数据线 推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3
|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
