单片机STM32的LCD12864显示(1)

只看该作者 · 2021-7-30 22:29

#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);
}

只看该作者 · 2021-7-30 22:31

/**************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);
}

只看该作者 · 2021-7-30 22:32

/**************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);
}

只看该作者 · 2021-7-30 22:34

/*******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();
}

只看该作者 · 2021-7-30 22:34

/*******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);
}

只看该作者 · 2021-7-30 22:35

/*******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);
}

只看该作者 · 2021-7-30 22:36

/****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 ;
}

只看该作者 · 2021-7-30 22:39

/*******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);
}

只看该作者 · 2021-7-30 22:41

/*******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);
   }
}

只看该作者 · 2021-7-30 22:48

/****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
      }
}
}

只看该作者 · 2021-7-30 22:50

/****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;
}

只看该作者 · 2021-7-30 22:58

/****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);
}

只看该作者 · 2021-7-30 23:00

/****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);
}

只看该作者 · 2021-7-30 23:02

/*******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);
  }
}

只看该作者 · 2021-7-30 23:03

/*******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);
  }
}

只看该作者 · 2021-7-30 23:04

/*******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

}

只看该作者 · 2021-7-30 23:06

/*******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);


}