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59-DMA-LCM液晶屏接口测试，STC8H8K64U实验箱演示程序, STC8H2K32U, STC8H2K12U, STC8H
主程序main.C代码如下（汇编版本在附件中）：
/*---------------------------------------------------------------------*/
/* --- Web: www.STCAI.com ---------------------------------------------*/
/* --- BBS: www.STCAIMCU.com -----------------------------------------*/
/* 如果要在程序中使用此代码,请在程序中注明使用了STC的资料及程序 */
/*---------------------------------------------------------------------*/
/************* 功能说明 **************
本例程基于STC8H8K64U为主控芯片的实验箱9进行编写测试，STC8H系列带DMA模块的芯片可通用参考.
LCM接口+DMA驱动液晶屏程序
8bit I8080模式, P6口接D8~D15
sbit LCD_RS = P4^5; //数据/命令切换
sbit LCD_WR = P4^2; //写控制
sbit LCD_RD = P4^4; //读控制
sbit LCD_CS = P3^4; //片选
sbit LCD_RESET = P4^3; //复位
LCM指令通过中断方式等待发送完成
DMA设置长度256字节，通过中断方式判断传输完成
下载时, 选择时钟 24MHz (用户可自行修改频率).
******************************************/
#include "..\..\comm\STC8H.h"
#include "stdio.h"
#include "intrins.h"
#include "font.h"
#define MAIN_Fosc 24000000L //定义主时钟
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned long u32;
sbit LCD_RS = P4^5; //数据/命令切换
sbit LCD_WR = P4^2; //写控制
sbit LCD_RD = P4^4; //读控制
sbit LCD_CS = P3^4; //片选
sbit LCD_RESET = P4^3; //复位
//IO连接
#define LCD_DataPort P6 //8位数据口
//支持横竖屏快速定义切换
#define USE_HORIZONTAL 0 //定义液晶屏顺时针旋转方向 0-0度旋转，1-90度旋转，2-180度旋转，3-270度旋转
//画笔颜色
#define WHITE 0xFFFF
#define BLACK 0x0000
#define BLUE 0x001F
#define BRED 0XF81F
#define GRED 0XFFE0
#define GBLUE 0X07FF
#define RED 0xF800
#define MAGENTA 0xF81F
#define GREEN 0x07E0
#define CYAN 0x7FFF
#define YELLOW 0xFFE0
#define BROWN 0XBC40 //棕色
#define BRRED 0XFC07 //棕红色
#define GRAY 0X8430 //灰色
#define DARKBLUE 0X01CF //深蓝色
#define LIGHTBLUE 0X7D7C //浅蓝色
#define GRAYBLUE 0X5458 //灰蓝色
#define LIGHTGREEN 0X841F //浅绿色
#define LGRAY 0XC618 //浅灰色(PANNEL),窗体背景色
#define LGRAYBLUE 0XA651 //浅灰蓝色(中间层颜色)
#define LBBLUE 0X2B12 //浅棕蓝色(选择条目的反色)
//定义LCD的尺寸
#define LCD_W 240
#define LCD_H 320
u16 POINT_COLOR=0x0000; //画笔颜色
typedef struct
{
u16 width; //LCD 宽度
u16 height; //LCD 高度
u16 id; //LCD ID
u8 dir; //横屏还是竖屏控制：0，竖屏；1，横屏。
u8 wramcmd; //开始写gram指令
u8 rramcmd; //开始读gram指令
u8 setxcmd; //设置x坐标指令
u8 setycmd; //设置y坐标指令
}_lcd_dev;
_lcd_dev lcddev;
void delay_ms(u16 ms);
void GPIO_Init(void);
void LCM_Config(void);
void LCD_Init(void);
void Test_Color(void);
void LCD_WR_DATA_16Bit(u16 Data);
void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd);
void Show_Str(u16 x, u16 y, u16 fc, u16 bc, u8 *str,u8 size,u8 mode);
void LCD_direction(u8 direction);
void main(void)
{
P_SW2 |= 0x80; //扩展寄存器(XFR)访问使能
P0M1 = 0x30; P0M0 = 0x30; //设置P0.4、P0.5为漏极开路(实验箱加了上拉电阻到3.3V)
P1M1 = 0x30; P1M0 = 0x30; //设置P1.4、P1.5为漏极开路(实验箱加了上拉电阻到3.3V)
P2M1 = 0x3c; P2M0 = 0x3c; //设置P2.2~P2.5为漏极开路(实验箱加了上拉电阻到3.3V)
P3M1 = 0x50; P3M0 = 0x50; //设置P3.4、P3.6为漏极开路(实验箱加了上拉电阻到3.3V)
P4M1 = 0x3c; P4M0 = 0x3c; //设置P4.2~P4.5为漏极开路(实验箱加了上拉电阻到3.3V)
P5M1 = 0x0c; P5M0 = 0x0c; //设置P5.2、P5.3为漏极开路(实验箱加了上拉电阻到3.3V)
P6M1 = 0xff; P6M0 = 0xff; //设置为漏极开路(实验箱加了上拉电阻到3.3V)
P7M1 = 0x00; P7M0 = 0x00; //设置为准双向口
GPIO_Init();
LCM_Config();
EA = 1;
LCD_Init(); //LCM初始化
while(1)
{
Test_Color();
}
}
void LCD_Fill(u16 sx,u16 sy,u16 ex,u16 ey,u16 color)
{
u16 i,j;
u16 width=ex-sx+1; //得到填充的宽度
u16 height=ey-sy+1; //高度
LCD_SetWindows(sx,sy,ex,ey);//设置显示窗口
for(i=0;i<height;i++)
{
for(j=0;j<width;j++)
LCD_WR_DATA_16Bit(color); //写入数据
}
}
void Test_Color(void)
{
u8 buf[10] = {0};
LCD_Fill(0,0,lcddev.width,lcddev.height,WHITE);
Show_Str(20,30,BLUE,YELLOW,"LCM Test",16,1);delay_ms(800);
LCD_Fill(0,0,lcddev.width,lcddev.height,RED);
Show_Str(20,30,BLUE,YELLOW,"RED ",16,1);delay_ms(800);
LCD_Fill(0,0,lcddev.width,lcddev.height,GREEN);
Show_Str(20,30,BLUE,YELLOW,"GREEN ",16,1);delay_ms(800);
LCD_Fill(0,0,lcddev.width,lcddev.height,BLUE);
Show_Str(20,30,RED,YELLOW,"BLUE ",16,1);delay_ms(800);
}
//========================================================================
// 函数: void delay_ms(u16 ms)
// 描述: 延时函数。
// 参数: ms,要延时的ms数, 自动适应主时钟.
// 返回: none.
// 版本: VER1.0
// 日期: 2013-4-1
// 备注:
//========================================================================
void delay_ms(u16 ms)
{
u16 i;
do{
i = MAIN_Fosc / 10000;
while(--i);
}while(--ms);
}
/*****************************************************************************
* @name :void LCD_WR_REG(u8 Reg)
* @date :2018-08-09
* @function :Write an 16-bit command to the LCD screen
* @parameters :data:Command value to be written
* @retvalue :None
******************************************************************************/
void LCD_WR_REG(u8 Reg)
{
LCMIFDATL = Reg;
LCD_CS=0;
LCMIFCR = 0x84; //Enable interface, write command out
while(!LCD_CS);
}
/*****************************************************************************
* @name :void LCD_WR_DATA(u8 Data)
* @date :2018-08-09
* @function :Write an 16-bit data to the LCD screen
* @parameters :data:data value to be written
* @retvalue :None
******************************************************************************/
void LCD_WR_DATA(u8 Data)
{
LCMIFDATL = Data;
LCD_CS=0;
LCMIFCR = 0x85; //Enable interface, write data out
while(!LCD_CS);
}
/*****************************************************************************
* @name :void LCD_WR_DATA_16Bit(u16 Data)
* @date :2018-08-09
* @function :Write an 16-bit command to the LCD screen
* @parameters :Data:Data to be written
* @retvalue :None
******************************************************************************/
void LCD_WR_DATA_16Bit(u16 Data)
{
LCD_WR_DATA((u8)(Data>>8));
LCD_WR_DATA((u8)Data);
}
/*****************************************************************************
* @name :void LCD_WriteReg(u8 LCD_Reg, u8 LCD_RegValue)
* @date :2018-08-09
* @function :Write data into registers
* @parameters :LCD_Reg:Register address
LCD_RegValue:Data to be written
* @retvalue :None
******************************************************************************/
void LCD_WriteReg(u8 LCD_Reg, u8 LCD_RegValue)
{
LCD_WR_REG(LCD_Reg);
LCD_WR_DATA(LCD_RegValue);
}
/*****************************************************************************
* @name :void LCD_WriteRAM_Prepare(void)
* @date :2018-08-09
* @function :Write GRAM
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCD_WriteRAM_Prepare(void)
{
LCD_WR_REG(lcddev.wramcmd);
}
/*****************************************************************************
* @name :void LCD_DrawPoint(u16 x,u16 y)
* @date :2018-08-09
* @function :Write a pixel data at a specified location
* @parameters :x:the x coordinate of the pixel
y:the y coordinate of the pixel
* @retvalue :None
******************************************************************************/
void LCD_DrawPoint(u16 x,u16 y)
{
LCD_SetWindows(x,y,x,y);//设置光标位置
LCD_WR_DATA_16Bit(POINT_COLOR);
}
/*****************************************************************************
* @name :void GPIO_Init(void)
* @date :2018-11-13
* @function :Set the gpio to push-pull mode
* @parameters :None
* @retvalue :None
******************************************************************************/
void GPIO_Init(void)
{
//P6口设置成推挽输出
P6M0=0xff;
P6M1=0x00;
//P3.4口设置成推挽输出
P3M0=0x10;
P3M1=0x00;
//P4.2,P4.3,P4.4,P4.5口设置成推挽输出
P4M0=0x3c;
P4M1=0x00;
}
/*****************************************************************************
* @name :void LCM_Config(void)
* @date :2018-11-13
* @function :Config LCM
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCM_Config(void)
{
LCMIFCFG = 0x84; //bit7 1:Enable Interrupt, bit1 0:8bit mode; bit0 0:8080,1:6800
LCMIFCFG2 = 0x09; //RS:P45,RD:P44,WR:P42; Setup Time=2,HOLD Time=1
LCMIFSTA = 0x00;
}
/*****************************************************************************
* @name :void LCDReset(void)
* @date :2018-08-09
* @function :Reset LCD screen
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCDReset(void)
{
LCD_CS=1;
delay_ms(50);
LCD_RESET=0;
delay_ms(150);
LCD_RESET=1;
delay_ms(50);
}
/*****************************************************************************
* @name :void LCD_Init(void)
* @date :2018-08-09
* @function :Initialization LCD screen
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCD_Init(void)
{
LCDReset(); //初始化之前复位
// delay_ms(150); //根据不同晶振速度可以调整延时，保障稳定显示
//*************2.4inch ILI9341初始化**********//
LCD_WR_REG(0xCF);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0xD9); //0xC1
LCD_WR_DATA(0X30);
LCD_WR_REG(0xED);
LCD_WR_DATA(0x64);
LCD_WR_DATA(0x03);
LCD_WR_DATA(0X12);
LCD_WR_DATA(0X81);
LCD_WR_REG(0xE8);
LCD_WR_DATA(0x85);
LCD_WR_DATA(0x10);
LCD_WR_DATA(0x7A);
LCD_WR_REG(0xCB);
LCD_WR_DATA(0x39);
LCD_WR_DATA(0x2C);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x34);
LCD_WR_DATA(0x02);
LCD_WR_REG(0xF7);
LCD_WR_DATA(0x20);
LCD_WR_REG(0xEA);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_REG(0xC0); //Power control
LCD_WR_DATA(0x1B); //VRH[5:0]
LCD_WR_REG(0xC1); //Power control
LCD_WR_DATA(0x12); //SAP[2:0];BT[3:0] 0x01
LCD_WR_REG(0xC5); //VCM control
LCD_WR_DATA(0x08); //30
LCD_WR_DATA(0x26); //30
LCD_WR_REG(0xC7); //VCM control2
LCD_WR_DATA(0XB7);
LCD_WR_REG(0x36); // Memory Access Control
LCD_WR_DATA(0x08);
LCD_WR_REG(0x3A);
LCD_WR_DATA(0x55);
LCD_WR_REG(0xB1);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x1A);
LCD_WR_REG(0xB6); // Display Function Control
LCD_WR_DATA(0x0A);
LCD_WR_DATA(0xA2);
LCD_WR_REG(0xF2); // 3Gamma Function Disable
LCD_WR_DATA(0x00);
LCD_WR_REG(0x26); //Gamma curve selected
LCD_WR_DATA(0x01);
LCD_WR_REG(0xE0); //Set Gamma
LCD_WR_DATA(0x0F);
LCD_WR_DATA(0x1D);
LCD_WR_DATA(0x1A);
LCD_WR_DATA(0x0A);
LCD_WR_DATA(0x0D);
LCD_WR_DATA(0x07);
LCD_WR_DATA(0x49);
LCD_WR_DATA(0X66);
LCD_WR_DATA(0x3B);
LCD_WR_DATA(0x07);
LCD_WR_DATA(0x11);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x09);
LCD_WR_DATA(0x05);
LCD_WR_DATA(0x04);
LCD_WR_REG(0XE1); //Set Gamma
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x18);
LCD_WR_DATA(0x1D);
LCD_WR_DATA(0x02);
LCD_WR_DATA(0x0F);
LCD_WR_DATA(0x04);
LCD_WR_DATA(0x36);
LCD_WR_DATA(0x13);
LCD_WR_DATA(0x4C);
LCD_WR_DATA(0x07);
LCD_WR_DATA(0x13);
LCD_WR_DATA(0x0F);
LCD_WR_DATA(0x2E);
LCD_WR_DATA(0x2F);
LCD_WR_DATA(0x05);
LCD_WR_REG(0x2B);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x3f);
LCD_WR_REG(0x2A);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0xef);
LCD_WR_REG(0x11); //Exit Sleep
delay_ms(120);
LCD_WR_REG(0x29); //display on
//设置LCD属性参数
LCD_direction(USE_HORIZONTAL);//设置LCD显示方向
}
/*****************************************************************************
* @name :void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd)
* @date :2018-08-09
* @function :Setting LCD display window
* @parameters :xStar:the bebinning x coordinate of the LCD display window
yStar:the bebinning y coordinate of the LCD display window
xEnd:the endning x coordinate of the LCD display window
yEnd:the endning y coordinate of the LCD display window
* @retvalue :None
******************************************************************************/
void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd)
{
LCD_WR_REG(lcddev.setxcmd);
LCD_WR_DATA((u8)(xStar>>8));
LCD_WR_DATA((u8)(0x00FF&xStar));
LCD_WR_DATA((u8)(xEnd>>8));
LCD_WR_DATA((u8)(0x00FF&xEnd));
LCD_WR_REG(lcddev.setycmd);
LCD_WR_DATA((u8)(yStar>>8));
LCD_WR_DATA((u8)(0x00FF&yStar));
LCD_WR_DATA((u8)(yEnd>>8));
LCD_WR_DATA((u8)(0x00FF&yEnd));
LCD_WriteRAM_Prepare(); //开始写入GRAM
}
/*****************************************************************************
* @name :void LCD_direction(u8 direction)
* @date :2018-08-09
* @function :Setting the display direction of LCD screen
* @parameters :direction:0-0 degree
1-90 degree
2-180 degree
3-270 degree
* @retvalue :None
******************************************************************************/
void LCD_direction(u8 direction)
{
lcddev.setxcmd=0x2A;
lcddev.setycmd=0x2B;
lcddev.wramcmd=0x2C;
lcddev.rramcmd=0x2E;
switch(direction){
case 0:
lcddev.width=LCD_W;
lcddev.height=LCD_H;
LCD_WriteReg(0x36,(1<<3));
break;
case 1:
lcddev.width=LCD_H;
lcddev.height=LCD_W;
LCD_WriteReg(0x36,(1<<3)|(1<<7)|(1<<5)|(1<<4));
break;
case 2:
lcddev.width=LCD_W;
lcddev.height=LCD_H;
LCD_WriteReg(0x36,(1<<3)|(1<<4)|(1<<6)|(1<<7));
break;
case 3:
lcddev.width=LCD_H;
lcddev.height=LCD_W;
LCD_WriteReg(0x36,(1<<3)|(1<<5)|(1<<6));
break;
default:break;
}
}
/*****************************************************************************
* @name :void LCD_ShowChar(u16 x,u16 y,u16 fc, u16 bc, u8 num,u8 size,u8 mode)
* @date :2018-08-09
* @function :Display a single English character
* @parameters :x:the beginning x coordinate of the Character display position
y:the beginning y coordinate of the Character display position
fc:the color value of display character
bc:the background color of display character
num:the ascii code of display character(0~94)
size:the size of display character
mode:0-no overlying,1-overlying
* @retvalue :None
******************************************************************************/
void LCD_ShowChar(u16 x,u16 y,u16 fc, u16 bc, u8 num,u8 size,u8 mode)
{
u8 temp;
u8 pos,t;
u16 colortemp=POINT_COLOR;
num=num-' ';//得到偏移后的值
LCD_SetWindows(x,y,x+size/2-1,y+size-1);//设置单个文字显示窗口
if(!mode) //非叠加方式
{
for(pos=0;pos<size;pos++)
{
if(size==12)temp=asc2_1206[num][pos];//调用1206字体
else temp=asc2_1608[num][pos]; //调用1608字体
for(t=0;t<size/2;t++)
{
if(temp&0x01)LCD_WR_DATA_16Bit(fc);
else LCD_WR_DATA_16Bit(bc);
temp>>=1;
}
}
}else//叠加方式
{
for(pos=0;pos<size;pos++)
{
if(size==12)temp=asc2_1206[num][pos];//调用1206字体
else temp=asc2_1608[num][pos]; //调用1608字体
for(t=0;t<size/2;t++)
{
POINT_COLOR=fc;
if(temp&0x01)LCD_DrawPoint(x+t,y+pos);//画一个点
temp>>=1;
}
}
}
POINT_COLOR=colortemp;
LCD_SetWindows(0,0,lcddev.width-1,lcddev.height-1);//恢复窗口为全屏
}
/*****************************************************************************
* @name :void Show_Str(u16 x, u16 y, u16 fc, u16 bc, u8 *str,u8 size,u8 mode)
* @date :2018-08-09
* @function :Display Chinese and English strings
* @parameters :x:the beginning x coordinate of the Chinese and English strings
y:the beginning y coordinate of the Chinese and English strings
fc:the color value of Chinese and English strings
bc:the background color of Chinese and English strings
str:the start address of the Chinese and English strings
size:the size of Chinese and English strings
mode:0-no overlying,1-overlying
* @retvalue :None
******************************************************************************/
void Show_Str(u16 x, u16 y, u16 fc, u16 bc, u8 *str,u8 size,u8 mode)
{
u16 x0=x;
u8 bHz=0; //字符或者中文
while(*str!=0)//数据未结束
{
if(!bHz)
{
if(x>(lcddev.width-size/2)||y>(lcddev.height-size))
return;
if(*str>0x80) bHz=1;//中文
else //字符
{
if(*str==0x0D)//换行符号
{
y+=size;
x=x0;
str++;
}
else
{
if(size>16)//字库中没有集成12X24 16X32的英文字体,用8X16代替
{
LCD_ShowChar(x,y,fc,bc,*str,16,mode);
x+=8; //字符,为全字的一半
}
else
{
LCD_ShowChar(x,y,fc,bc,*str,size,mode);
x+=size/2; //字符,为全字的一半
}
}
str++;
}
}
else//中文
{
// if(x>(lcddev.width-size)||y>(lcddev.height-size))
// return;
// bHz=0;//有汉字库
// if(size==32)
// GUI_DrawFont32(x,y,fc,bc,str,mode);
// else if(size==24)
// GUI_DrawFont24(x,y,fc,bc,str,mode);
// else
// GUI_DrawFont16(x,y,fc,bc,str,mode);
str+=2;
x+=size;//下一个汉字偏移
}
}
}
/*****************************************************************************
* @name :void LCM_Interrupt(void)
* @date :2018-11-13
* @function :None
* @parameters :None
* @retvalue :
******************************************************************************/
void LCMIF_DMA_Interrupt(void) interrupt 13
{
if(LCMIFSTA & 0x01)
{
LCMIFSTA = 0x00;
LCD_CS=1;
}
}
59-DMA-LCM液晶屏接口测试.zip
(63.57 KB, 下载次数: 14)
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