lcd_driver.c
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#include "HW_MCUIO.h"//#include "stm32f4xx_hal.h"
#include "dot.h"
#include "platform.h"
#include "function.h"
#include "base_core_user.h"
#ifdef LCD_ON
/*
F4系列速度太快，需要加延时，读写才正常!!!*/
static void lcd_delay(unsigned short dy)
{
unsigned short i;
for(i=0;i<dy;i++);
}
#define LCD_IO_DELAY 1
#define RST_1 {HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET);lcd_delay(LCD_IO_DELAY);}
#define RST_0 {HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET);lcd_delay(LCD_IO_DELAY);}
static void lcd_write_data_sub(unsigned char addr, unsigned char data)
{
i2c_start();
i2c_send_byte(addr);
i2c_send_byte(data);
i2c_stop();
}
/*
0x78 -write command
0x7A -write data
*/
static void lcd_write_cmd( unsigned char cmd)
{
lcd_write_data_sub(0x78,cmd);
}
static void lcd_write_data( unsigned char data)
{
lcd_write_data_sub(0x7A,data);
}
/*
设置光标位置
*/
static void lcd_set_cursor_position( unsigned short x,unsigned short y)
{
unsigned short xh,xl;
xh=y/16;
xl=y%16;
lcd_write_cmd(0x04);//SET COLUMN ADDRESS
lcd_write_data(x+80);
lcd_write_cmd(0x70+xh);//SET PAGE ADDRESS
lcd_write_cmd(0x60+xl);
lcd_write_cmd(0x01); //WRITE DATA TO DISPLAY MEMORY
}
/*
查表得到字符的数据*/
static unsigned char * get_string_table( const unsigned char *pt)
{
unsigned char *rt=0;
if( (*pt>=0x61)&&(*pt<=0x7A) ) //小写
rt = &chardot[(*pt-0x61)*16];
else if( (*pt>=0x41)&&(*pt<=0x5A) ) //大写
rt = &chardot[((CHAR_41)+*pt-0x41)*16];
else if( (*pt>=0x30)&&(*pt<=0x39) ) //数字
rt = &chardot[((CHAR_30)+*pt-0x30)*16];
else if (*pt==0x20)//空格
rt = &chardot[(CHAR_20)*16];
else if (*pt==0x2D)//-中杠
rt = &chardot[(CHAR_2D)*16];
else if (*pt==0x5F)//_下杠
rt = &chardot[(CHAR_5F)*16];
else if (*pt==0x2E)//.
rt = &chardot[(CHAR_2E)*16];
else if (*pt==0x3A)//:
rt = &chardot[(CHAR_3A)*16];
else //出错时，显示空格(空白)
rt = &chardot[(CHAR_20)*16];
return rt;
}
#define CHAR_16x8 1
#define CHAR_16x8_MIDLINE 2
#define CHIN_12x12 3
#define CHIN_16x16 4
/*
*
*/
static unsigned char display_char_chinese(unsigned short x,unsigned short y,
unsigned char char_type,
const unsigned char *chr,
unsigned char len,
unsigned char reverse)
{
unsigned char i,j,*pt;
switch(char_type){
case CHAR_16x8:
for(j=0;;j++){
if( chr[j] ==0x00 )break;
pt =get_string_table(chr+j);
//写一个字符
lcd_set_cursor_position(x+j*8,y);
for(i=0;i<8;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
lcd_set_cursor_position(x+j*8,y+1);
for(i=0;i<8;i++) lcd_write_data( (reverse==0)?pt[i+8]:~pt[i+8] );
}//for
break;
case CHAR_16x8_MIDLINE://特殊处理:下划线代替中划线
for(j=0;;j++){
if( chr[j] ==0x00 )break;
pt =get_string_table(chr+j);
//写一个字符
lcd_set_cursor_position(x+j*8,y);
for(i=0;i<8;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
lcd_set_cursor_position(x+j*8,y);//lcd_set_cursor_position(x+j*8,y+1);
for(i=0;i<8;i++) lcd_write_data( (reverse==0)?pt[i+8]:~pt[i+8] );
}//for
break;
#if 0
case CHIN_12x12:
for(j=0;j<len;j++){
pt =&hzdot[chr[j]*24];
lcd_set_cursor_position(x+j*12,y);
for(i=0;i<12;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
lcd_set_cursor_position(x+j*12,y+1);
for(i=12;i<24;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
}//for
break;
#endif
case CHIN_16x16:
for(j=0;j<len;j++){
pt =&hzdot[chr[j]*32];
lcd_set_cursor_position(x+j*16,y);
for(i=0;i<16;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
lcd_set_cursor_position(x+j*16,y+1);
for(i=16;i<32;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
// lcd_set_cursor_position(x+j*24,y+2);
// for(i=48;i<72;i++) lcd_write_data( (reverse==0)?pt[i]:~pt[i] );
}//for
break;
default:break;
}//sw
return 1;
}
/*
清除全屏*/
void lcd_all_clear(void)
{
unsigned short i,j;
for (i=0;i<12;i++){
lcd_set_cursor_position(0,i);
for (j=0;j<160;j++)
lcd_write_data(0x00);
}//for
}
/*
显示全屏*/
void lcd_all_display(void)
{
unsigned short i,j;
for (i=0;i<12;i++){
lcd_set_cursor_position(0,i);
for (j=0;j<160;j++)
lcd_write_data(0xff);
}
}
/*
lcd 初始化*/
void lcd_init(void)
{
RST_0
basic_delay_ms(10);//delay_Nms(100);//
RST_1
basic_delay_ms(250);// delay_Nms(250);////复位时间一定要足够
lcd_write_cmd(0xe1);
lcd_write_data(0xe2);
basic_delay_ms(10);// delay_Nms(10);
lcd_write_cmd(0xc9); //display on
lcd_write_data(0xac);
lcd_write_cmd(0x24);
lcd_write_cmd(0xc4);
lcd_write_cmd(0xa1);
lcd_write_cmd(0x2d);
lcd_write_cmd(0xea);
lcd_write_cmd(0x81);
lcd_write_data(0x70);
lcd_write_cmd(0x89); //SET RAM ADDRESS CONTROL
lcd_write_cmd(0x86); // 0X86??DD or 0X87?eDD
lcd_write_cmd(0x85); //SET PARTIAL DISPLAY CONTROL
lcd_write_cmd(0xf1); //SET COM END
lcd_write_data(159);
lcd_write_cmd(0xf2); //SET PARTIAL DISPLAY START
lcd_write_data(64);
lcd_write_cmd(0xf3); //SET PARTIAL DISPLAY END
lcd_write_data(159);
lcd_write_cmd(0xf9); //SET WINDOW PROGRAM ENABLE
lcd_write_cmd(0xf4); //SET WINDOW PROGRAM STARTING COLUMN ADDRESS
lcd_write_data(80);
lcd_write_cmd(0xf5); //SET WINDOW PROGRAM STARTING PAGE ADDRESS
lcd_write_data(16);
lcd_write_cmd(0xf6); //SET WINDOW PROGRAM ENDING COLUMN ADDRESS
lcd_write_data(239);
lcd_write_cmd(0xf7); //SET WINDOW PROGRAM ENDING PAGE ADDRESS
lcd_write_data(39);
lcd_write_cmd(0x95); // set DC5=0 DC4=1 1 bits per pixel
lcd_write_cmd(0xc9); //dispaly on
lcd_write_data(0xad);
lcd_all_clear();
}
//#define CHAR_16x8 1
//#define CHAR_16x8_MIDLINE 2
//#define CHIN_12x12 3
/*
*显示12x12的中文
*/
#if 0
void display_chinese(unsigned short x,unsigned short y
//,unsigned char char_type
,const unsigned char *chr
,unsigned char len
//,unsigned char reverse
)
{
display_char_chinese(x,y,CHIN_12x12,chr,len,0);
}
#endif
/*
*显示24x24的汉字!!!
*/
void display_chinese(unsigned short x,unsigned short y
//,unsigned char char_type
,const unsigned char *chr
,unsigned char len
//,unsigned char reverse
)
{
display_char_chinese(x,y,CHIN_16x16,chr,len,0);
}
/*
* 显示字符;特殊处理下划线;
*/
void display_char(unsigned short x,unsigned short y
//,unsigned char char_type
,const unsigned char *chr
//,unsigned char len
//,unsigned char reverse
)
{
if( (chr[0] ==0x5F)&&(chr[1] ==0x5F)&&(chr[2] ==0x5F) ) //特殊处理 下划线实现中线的效果
display_char_chinese(x,y,CHAR_16x8_MIDLINE,chr,0,0);
else
display_char_chinese(x,y,CHAR_16x8,chr,0,0);
}
#endif