[原创] 顺便贴个lm3s的lcd12864打点、画线、画图、字符程序

//------file:12864.c--------------------------------------------------//
#include "lm3sxxx.h"
#define data GPIO_PORTB_BASE
#define cmd GPIO_PORTA_BASE
#define rs GPIO_PIN_0
#define rw GPIO_PIN_1
#define en GPIO_PIN_2
#define psb GPIO_PIN_3

void delayms(unsigned int n)
{
unsigned char i;
for(;n>0;n--)
for(i=0;i<100;i++);
}

void checkBusy(void)
{
write(cmd,rs,0X00); //rs=0;
write(cmd,rw,0Xff); //rw=1;
write(cmd,en,0Xff); //en=1;
GPIOPinTypeGPIOOutput(data,0XFF);
write(data,0xff,0Xff);//dataPort=0xff;
GPIOPinTypeGPIOInput(data,0XFF);
while(read(data,0xff)&0x80);//while(dataPort & 0x80);
write(cmd,en,0X00);//en=0;
}

void writeCommand(unsigned char cmdd)
{ char i;
checkBusy();
write(cmd,rs,0X00);//rs=0;
write(cmd,rw,0X00);//rw=0;
write(cmd,en,0Xff);//en=1;
GPIOPinTypeGPIOOutput(data,0XFF);
write(data,0xff,cmdd);//dataPort=cmdd;
for(i=100;i>0;i--);
write(cmd,en,0X00);//en=0;
}

void writeData(unsigned char adata)
{ char i;
checkBusy();
write(cmd,rs,0Xff);//rs=1;
write(cmd,rw,0X00);//rw=0;
write(cmd,en,0Xff);//en=1;
GPIOPinTypeGPIOOutput(data,0XFF);
write(data,0xff,adata);//dataPort=adata;
for(i=100;i>0;i--);
write(cmd,en,0X00);//en=0;
}

unsigned char readData(void)
{
unsigned char RData;
GPIOPinTypeGPIOOutput(data,0XFF);
write(data,0xff,0xff);//dataPort=0xff;
checkBusy();
write(cmd,rs,0Xff);//rs=1;
write(cmd,rw,0Xff);//rw=1;
write(cmd,en,0X00);//en=0;
write(cmd,en,0Xff);//en=1;
GPIOPinTypeGPIOInput(data,0XFF);
RData=read(data,0xff);//RData=dataPort;
write(cmd,en,0X00);//en=0;
return RData;
}

void ClrGDRAM(void)
{
unsigned char x,y;
for(y=0;y<64;y++)
for(x=0;x<16;x++)
{
writeCommand(0x34);
writeCommand(y+0x80); //行地址
writeCommand(x+0x80); //列地址
writeCommand(0x30);
writeData(0x00);
writeData(0x00);
}
//writeCommand(0x30);
}

void LcmInit(void)
{
writeCommand(0x30);
delayms(50);
writeCommand(0x01);
delayms(50);
writeCommand(0x06);
delayms(50);
writeCommand(0x0c);
ClrGDRAM();
write(cmd,psb,0Xff);//psb=1;
}

//在坐标（x,y)处显示一个数字
void LcmPrinta(unsigned char x,unsigned char y,unsigned char n)
{ unsigned char a[]={"0123456789"};
unsigned char address;
switch (y)
{
case 0:address=0x80+x;break;
case 1:address=0x90+x;break;
case 2:address=0x88+x;break;
case 3:address=0x98+x;break;
default:break;
}
writeCommand(address);
writeData(*a+n);
}

//在坐标（x,y)处显示字符串
void LcmPrint(unsigned char x,unsigned char y,unsigned char *adata)
{
unsigned char address;
unsigned char i=0;
switch (y)
{
case 0:address=0x80+x;break;
case 1:address=0x90+x;break;
case 2:address=0x88+x;break;
case 3:address=0x98+x;break;
default:break;
}
writeCommand(address);
while(*(adata+i))
{
writeData(*(adata+i));
i++;
}
}
/***********************************************************
函数名： drawPoint
函数说明：画点
传入参数：打点位置(x0,y0);color=1,点亮；color=0,擦除
传出参数：无
返回值： 无
**********************************************************/
void drawPoint(unsigned char x,unsigned char y,unsigned char color)
{
unsigned char row,collum,cbite;
unsigned char tempH,tempL;
writeCommand(0x34);
writeCommand(0x36);
collum=x>>4;
cbite=x&0x0f;
if(y<32)
row=y;
else
{row=y-32;
collum+=8;
}
writeCommand(0x80+row);
writeCommand(0x80+collum);
readData();
tempH=readData();
tempL=readData();
writeCommand(0x80+row);
writeCommand(0x80+collum);
if (color)
{
if(cbite<8)
{
tempH|=(1<<(7-cbite));
//tempL=(1<<(7-cbite));
}
else
{
//tempH=(1<<(15-cbite));
tempL|=(1<<(15-cbite));
}
}
else
{
if(cbite<8)
{
tempH&=~(1<<(7-cbite));
//tempL=(1<<(7-cbite));
}
else
{
//tempH=(1<<(15-cbite));
tempL&=~(1<<(15-cbite));
}
}
writeData(tempH);
writeData(tempL);
writeCommand(0x30);
}

/***********************************************************
函数名： drawRowLine
函数说明：画水平线
传入参数：(x0,y0),水平线的起点;(x1,y0)水平线的终点
color=1,点亮；color=0,擦除
传出参数：无
返回值： 无
**********************************************************/
void drawRowLine(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char color)
{
unsigned char temp;
if(x0>x1) // 对x0、x1大小进行排列，以便画图
{
temp = x1;
x1 = x0;
x0 = temp;
}
do
{
drawPoint(x0, y0, color); // 逐点显示，描出垂直线
x0++;
}
while(x1>=x0);
}

/***********************************************************
函数名： drawCollumLine
函数说明：画竖直线
传入参数：(x0,y0),竖直线的起点;(x1,y0)竖直线的终点;
color=1,点亮；color=0,擦除
传出参数：无
返回值： 无
************************************************************/
void drawCollumLine(unsigned char x0,unsigned char y0,unsigned char y1,unsigned char color)
{
unsigned char temp;
if(y0>y1)
{
temp=y0;
y0=y1;
y1=temp;
}
while (y0<=y1)
{
drawPoint(x0,y0,color);
y0++;
}
}
/***********************************************************
函数名： disp_picture
函数说明： 显示一幅128*64的图画
传入参数：图形指针*img
传出参数：无
返回值： 无
**********************************************************/
void disp_picture(unsigned char *img)
{
unsigned char i,j;
for(j=0;j<32;j++)
{
for(i=0;i<8;i++)
{
writeCommand(0x34);
writeCommand(0x80+j);
writeCommand(0x80+i);
writeCommand(0x30);
writeData(img[j*16+i*2]);
writeData(img[j*16+i*2+1]);
}
}
for(j=32;j<64;j++)
{
for(i=0;i<8;i++)
{
writeCommand(0x34);
writeCommand(0x80+j-32);
writeCommand(0x80+(i+8));
writeCommand(0x30);
writeData(img[j*16+i*2]);
writeData(img[j*16+i*2+1]);
}
}
writeCommand(0x36);
}
/*************************************************************
函数名： drawLine
函数说明：使用Bresenham法,画任意两点间的直线
传入参数：(x0,y0),竖直线的起点;(x1,y1)竖直线的终点
color=1,点亮；color=0,擦除
传出参数：无
返回值： 无
*************************************************************/
void drawLine(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char color)
{
int dx; // 直线x轴差值变量
int dy; // 直线y轴差值变量
char dx_sym; // x轴增长方向，为-1时减值方向，为1时增值方向
char dy_sym; // y轴增长方向，为-1时减值方向，为1时增值方向
int dx_2; // dx*2值变量，用于加快运算速度
int dy_2; // dy*2值变量，用于加快运算速度
int di; // 决策变量

dx = x1-x0; // 求取两点之间的差值
dy = y1-y0;
if (dx<0) dx_sym=-1;
else
{
if(dx>0) dx_sym=1;
else
{
drawCollumLine(x0,y0,y1,color);
return;
}
}
if(dy>0) dy_sym=1;
else
{
if(dy<0) dy_sym=-1;
else
{
drawRowLine(x0,y0,x1,color);
return;
}
}
dx=dx_sym*dx;
dy=dy_sym*dy;

dx_2=dx*2;
dy_2=dy*2;

if(dx>=dy)
{
di=dy_2-dx;
while(x0!=x1)
{
drawPoint(x0,y0,color);
x0+=dx_sym;
if(di<0) di+=dy_2;
else {di+=dy_2-dx_2;y0+=dy_sym;}
}
drawPoint(x0,y0,color);
}
else
{
di=dx_2-dy;
while(y0!=y1)
{
drawPoint(x0,y0,color);
y0+=dy_sym;
if(di<0) di+=dx_2;
else {di+=dx_2-dy_2;x0+=dx_sym;}
}
drawPoint(x0,y0,color);
}

}

进展挺快的，贴几个图看看就更好了，呵呵。

顶一个

高手啊,羡慕嫉妒恨啊>....

好东西，谢谢楼主的分享哦！
顶一个！

谢谢分享！

谢谢分享！

谢谢楼主不吝分享，感激不尽!

任意点和点不可以画直线

XXO(∩_∩)O谢谢分享