我的液晶是怎么回事？急，求解答。2.4寸驱动是9325，,16脚
首先液晶是好的，我放在我的LY-51s开发板上工作是正常的。后来将液晶插在我的Atmega32最小系统上就不工作了，只有白屏，哎，纠结死了。希望大家能指点一下到底是哪不对。。。。我就编了很简单的液晶初始化以及刷屏函数，一点反应都没有，上代码/*-----------------------------------------------
名称：彩屏
内容：
-----------------------------------------------*/
#include<mega32.h>
/*-----------------------------------------------
全局变量
-----------------------------------------------*/
/* LCD color */
#define White 0xFFFF
#define Black 0x0000
#define Blue 0x001F
#define Blue2 0x051F
#define Red 0xF800
#define Magenta 0xF81F
#define Green 0x07E0
#define Cyan 0x7FFF
#define Yellow 0xFFE0
#define WINDOW_XADDR_START 0x0050 // Horizontal Start Address Set
#define WINDOW_XADDR_END 0x0051 // Horizontal End Address Set
#define WINDOW_YADDR_START 0x0052 // Vertical Start Address Set
#define WINDOW_YADDR_END 0x0053 // Vertical End Address Set
#define GRAM_XADDR 0x0020 // GRAM Horizontal Address Set
#define GRAM_YADDR 0x0021 // GRAM Vertical Address Set
#define GRAMWR 0x0022 // memory write
#define DataPort PORTD //数据口使用DataPort
/*----------------------------------------------------------------
定义硬件端口
----------------------------------------------------------------*/
#define RWPORTC.1
//#define _RDPORTC.2
#define CSPORTC.0
#define RSPORTC.6
#define RESPORTC.7 //端口设置
/*----------------------------------------------------------------*/
void ILI9325_Initial(void);
void Write_Cmd_Data(unsigned char x, unsigned int y);
void Write_Cmd(unsigned char DH,unsigned char DL);
void Write_Data(unsigned char DH,unsigned char DL);
void delayms(unsigned int tt);
void Show_RGB (unsigned int x0,unsigned int x1,unsigned int y0,unsigned int y1,unsigned int Color);
voidWrite_Data_U16(unsigned int y);
static void LCD_SetPos(unsigned int x0,unsigned int x1,unsigned int y0,unsigned int y1);
void CLR_Screen(unsigned int bColor);
void Put_pixel(unsigned char x,unsigned char y,unsigned int color);
static void LCD_SetPos(unsigned int x0,unsigned int x1,unsigned int y0,unsigned int y1);
void Line( unsigned char X0,unsigned char Y0,
unsigned char X1,
unsigned char Y1,
unsigned int color);
void Rectangle( unsigned char left,
unsigned char top,
unsigned char right,
unsigned char bottom,
unsigned int color);
/*------------------------------------------------
主函数
------------------------------------------------*/
main()
{
unsigned char x,y;
DDRD=0XFF;
DDRC=0XFF;
ILI9325_Initial(); //初始化LCD
CLR_Screen(White); //用背景色清屏
//绘制矩形平面
delayms(1000);
Show_RGB(0,240,0,320,White);
Rectangle(0,240,240,0,Black);
for(x=0;x<240;x+=30)
{
for(y=0;y<240;y+=2)
{
Put_pixel(x,y,Black);
}
}
for(y=0;y<240;y+=30)
{
for(x=0;x<240;x+=2)
{
Put_pixel(x,y,Black);
}
}
while(1)
{
for(y=0;y<120;y++)
{
x=174;
Put_pixel(x,y,Black);
}
//delayms(1000);
for(y=0;y<120;y++)
{
x=74;
Put_pixel(x,y,Black);
}
//Show_RGB(0,240,0,320,White);
}
}
/*----------------------------------------------------------------
写命令
----------------------------------------------------------------*/
void Write_Cmd(unsigned char DH,unsigned char DL)
{
CS=0;
RS=0;
DataPort=DH;
RW=0;
RW=1;
DataPort=DL;
RW=0;
RW=1;
CS=1;
}
/*----------------------------------------------------------------
写数据 双8位
----------------------------------------------------------------*/
void Write_Data(unsigned char DH,unsigned char DL)
{
CS=0;
RS=1;
DataPort=DH;
RW=0;
RW=1;
DataPort=DL;
RW=0;
RW=1;
CS=1;
}
/*----------------------------------------------------------------
写命令、写数据
输入参数：x 需要输入的命令 16位
y 需要输入的数据 16位
----------------------------------------------------------------*/
voidWrite_Cmd_Data (unsigned char x,unsigned int y)
{
unsigned char m,n;
m=y>>8;
n=y;
Write_Cmd(0x00,x);
Write_Data(m,n);
}
/*----------------------------------------------------------------
写16位数据
----------------------------------------------------------------*/
voidWrite_Data_U16(unsigned int y)
{
unsigned char m,n;
m=y>>8;
n=y;
Write_Data(m,n);
}
/*----------------------------------------------------------------
延时函数
----------------------------------------------------------------*/
void delayms(unsigned int count)
{
int i,j;
for(i=0;i<count;i++)
{
for(j=0;j<260;j++);
}
}
/*----------------------------------------------------------------
液晶初始化
----------------------------------------------------------------*/
void ILI9325_Initial(void)
{
CS=1;
delayms(5);
RES=0;
delayms(5);
RES=1;
delayms(50);
Write_Cmd_Data(0x0001,0x0100);
Write_Cmd_Data(0x0002,0x0700);
Write_Cmd_Data(0x0003,0x1030);
Write_Cmd_Data(0x0004,0x0000);
Write_Cmd_Data(0x0008,0x0207);
Write_Cmd_Data(0x0009,0x0000);
Write_Cmd_Data(0x000A,0x0000);
Write_Cmd_Data(0x000C,0x0000);
Write_Cmd_Data(0x000D,0x0000);
Write_Cmd_Data(0x000F,0x0000);
//power on sequence VGHVGL
Write_Cmd_Data(0x0010,0x0000);
Write_Cmd_Data(0x0011,0x0007);
Write_Cmd_Data(0x0012,0x0000);
Write_Cmd_Data(0x0013,0x0000);
//vgh
Write_Cmd_Data(0x0010,0x1290);
Write_Cmd_Data(0x0011,0x0227);
//delayms(100);
//vregiout
Write_Cmd_Data(0x0012,0x001d); //0x001b
//delayms(100);
//vom amplitude
Write_Cmd_Data(0x0013,0x1500);
//delayms(100);
//vom H
Write_Cmd_Data(0x0029,0x0018);
Write_Cmd_Data(0x002B,0x000D);
//gamma
Write_Cmd_Data(0x0030,0x0004);
Write_Cmd_Data(0x0031,0x0307);
Write_Cmd_Data(0x0032,0x0002);// 0006
Write_Cmd_Data(0x0035,0x0206);
Write_Cmd_Data(0x0036,0x0408);
Write_Cmd_Data(0x0037,0x0507);
Write_Cmd_Data(0x0038,0x0204);//0200
Write_Cmd_Data(0x0039,0x0707);
Write_Cmd_Data(0x003C,0x0405);// 0504
Write_Cmd_Data(0x003D,0x0F02);
//ram
Write_Cmd_Data(0x0050,0x0000);
Write_Cmd_Data(0x0051,0x00EF);
Write_Cmd_Data(0x0052,0x0000);
Write_Cmd_Data(0x0053,0x013F);
Write_Cmd_Data(0x0060,0xA700);
Write_Cmd_Data(0x0061,0x0001);
Write_Cmd_Data(0x006A,0x0000);
//
Write_Cmd_Data(0x0080,0x0000);
Write_Cmd_Data(0x0081,0x0000);
Write_Cmd_Data(0x0082,0x0000);
Write_Cmd_Data(0x0083,0x0000);
Write_Cmd_Data(0x0084,0x0000);
Write_Cmd_Data(0x0085,0x0000);
//
Write_Cmd_Data(0x0090,0x0010);
Write_Cmd_Data(0x0092,0x0600);
Write_Cmd_Data(0x0093,0x0003);
Write_Cmd_Data(0x0095,0x0110);
Write_Cmd_Data(0x0097,0x0000);
Write_Cmd_Data(0x0098,0x0000);
Write_Cmd_Data(0x0007,0x0133);
// Write_Cmd_Data(0x0022);//
}
/*----------------------------------------------------------------
设置坐标
----------------------------------------------------------------*/
static void LCD_SetPos(unsigned int x0,unsigned int x1,unsigned int y0,unsigned int y1)
{
Write_Cmd_Data(WINDOW_XADDR_START,x0);
Write_Cmd_Data(WINDOW_XADDR_END,x1);
Write_Cmd_Data(WINDOW_YADDR_START,y0);
Write_Cmd_Data(WINDOW_YADDR_END,y1);
Write_Cmd_Data(GRAM_XADDR,x0);
Write_Cmd_Data(GRAM_YADDR,y0);
Write_Cmd (0x00,0x22);//LCD_WriteCMD(GRAMWR);
}
/*----------------------------------------------------------------
在屏幕上画线
输入参数：起始坐标X0，Y0，终止坐标X1，Y1
color 线颜色
----------------------------------------------------------------*/
void Line( unsigned char X0,
unsigned char Y0,
unsigned char X1,
unsigned char Y1,
unsigned int color)
{
int dx = X1 - X0;
int dy = Y1 - Y0;
int P= 2 * dy - dx;
int dobDy = 2 * dy;
int dobD = 2 * (dy - dx);
int PointX = 0,PointY = 0;
int incx = 0,incy = 0;
int distance = 0,xerr = 0,yerr = 0;
unsigned int i = 0;
if(dx == 0) //k=1斜率为1
{
PointX = X0;
if(Y0 < Y1)
{
PointY = Y0;
}
else
{
PointY = Y1;
}
for(i = 0;i <= ((Y0<Y1) ? (Y1-Y0) : (Y0-Y1));i++)
{
Put_pixel(PointX,PointY,color);
PointY++;
}
return;
}
if(dy == 0) //k=0斜率为0
{
PointY = Y0;
if(X0 < X1)
{
PointX = X0;
}
else
{
PointX = X1;
}
for(i = 0;i <= ((X0<X1) ? (X1-X0) : (X0-X1));i++)
{
Put_pixel(PointX,PointY,color);
PointX++;
}
return;
}
if(dx > 0)
incx = 1;
else if(dx == 0)
incx = 0;
else
incx = -1;
if(dy > 0)
incy = 1;
else if(dy == 0)
incy = 0;
else
incy = -1;
dx = ((X0>X1) ? (X0-X1) : (X1-X0));
dy = ((Y0>Y1) ? (Y0-Y1) : (Y1-Y0));
if(dx>dy) distance=dx;
else distance=dy;
PointX = X0;
PointY = Y0;
for(i=0;i<=distance+1;i++)
{
Put_pixel(PointX,PointY,color);
xerr+=dx;
yerr+=dy;
if(xerr>distance)
{
xerr-=distance;
PointX+=incx;
}
if(yerr>distance)
{
yerr-=distance;
PointY+=incy;
}
}
}
/*---------------------------------------------------------------------------
绘制矩形框
输入参数：矩形的起始位置left,top
矩形的结束位置right,bottom
矩形框的颜色color
-----------------------------------------------------------------------------*/
void Rectangle( unsigned char left,
unsigned char top,
unsigned char right,
unsigned char bottom,
unsigned int color)
{
Line(left,top,right,top,color);
Line(left,top,left,bottom,color);
Line(right,top,right,bottom,color);
Line(left,bottom,right,bottom,color);
}
/*----------------------------------------------------------------
清屏函数
输入参数：bColor 清屏所使用的背景色
----------------------------------------------------------------*/
void CLR_Screen(unsigned int bColor)
{
unsigned int i,j;
LCD_SetPos(0,240,0,320);//320x240
for (i=0;i<320;i++)
{
for (j=0;j<240;j++)
Write_Data_U16(bColor);
}
}
/*----------------------------------------------------------------
显示RGB颜色
输入参数：x0，y0 起始坐标
x1，y1 结束坐标
Color背景颜色
----------------------------------------------------------------*/
void Show_RGB (unsigned int x0,unsigned int x1,unsigned int y0,unsigned int y1,unsigned int Color)
{
unsigned int i,j;
LCD_SetPos(x0,x1,y0,y1);
for (i=y0;i<=y1;i++)
{
for (j=x0;j<=x1;j++)
Write_Data_U16(Color);
}
}
/*----------------------------------------------------------------
画点
输入参数：x，y 需要画点坐标
color 点的颜色
----------------------------------------------------------------*/
void Put_pixel(unsigned char x,unsigned char y,unsigned int color)
{
LCD_SetPos(x,x,y,y);
Write_Data_U16(color);
}
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