最近在做MSP430F149通过IO口模拟SPI控制TFT(驱动为Ili9341,接口只有SPI模式)屏幕显示,但是老是白屏。求助啊。
附上屏显程序:(主程序跟这些程序不在一个源文件中)
#include
#include
#include
u16 BACK_COLOR, POINT_COLOR; //背景色,画笔色
void delayms(u16 n)
{
u16 i = 0;u16 j=0;u16 k=0;
for(i = n;i > 0;i--)
for(j = 100;j > 0;j--)
for(k = 8;k > 0;k--)
_NOP();
}
void LCD_Writ_Bus(char da) //串行数据写入
{
union {
unsigned char data;
unsigned char bit[8];
}bitdata;
bitdata.data=da;
/*P3IN&0x04=bitdata.bit[7];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[6];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[5];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[4];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[3];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[2];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[1];CLR_LCDSCK;SET_LCDSCK;
P3IN&0x04=bitdata.bit[0];CLR_LCDSCK;SET_LCDSCK; */
int i=0;
for(i=8;i>0;i--)
{
P2OUT=0x07;
if(bitdata.bit[i])
{SET_LCDSDI;}
//if(bitdata.bit[i]==1)
else
{CLR_LCDSDI;}
CLR_LCDSCK;
SET_LCDSCK;
}
}
void LCD_WR_DATA8(char da) //发送数据-8位参数
{
CLR_LCDCS;
SET_LCDDC;
LCD_Writ_Bus(da);
SET_LCDCS;
}
void LCD_WR_DATA(int da)
{
CLR_LCDCS;
SET_LCDDC;
LCD_Writ_Bus(da>>8);
LCD_Writ_Bus(da);
SET_LCDCS;
}
void LCD_WR_REG(char da)
{
CLR_LCDCS;
CLR_LCDDC;
//SET_LCDSCK;
LCD_Writ_Bus(da);
SET_LCDCS;
}
void LCD_WR_REG_DATA(int reg,int da)
{
LCD_WR_REG(reg);
LCD_WR_DATA(da);
}
void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
LCD_WR_REG(0x2a);
LCD_WR_DATA8(x1>>8);
LCD_WR_DATA8(x1);
LCD_WR_DATA8(x2>>8);
LCD_WR_DATA8(x2);
LCD_WR_REG(0x2b);
LCD_WR_DATA8(y1>>8);
LCD_WR_DATA8(y1);
LCD_WR_DATA8(y2>>8);
LCD_WR_DATA8(y2);
LCD_WR_REG(0x2C);
}
void Lcd_Init(void)
{
P3DIR= 0x1f;
//调用一次这些函数,免得编译的时候提示警告
SET_LCDCS ;
if((P3OUT&0x10)==0)
{
LCD_WR_REG_DATA(0,0);
LCD_ShowString(0,0," ");
LCD_ShowNum(0,0,0,0);
LCD_Show2Num(0,0,0,0);
LCD_DrawPoint_big(0,0);
LCD_DrawRectangle(0,0,0,0);
Draw_Circle(0,0,0);
}
SET_LCDREST;
delayms(1);
CLR_LCDREST ;
delayms(10);
SET_LCDREST ;
SET_LCDCS;
delayms(120);
CLR_LCDCS ; //打开片选使能
LCD_WR_REG(0xCB);
LCD_WR_DATA8(0x39);
LCD_WR_DATA8(0x2C);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x34);
LCD_WR_DATA8(0x02);
LCD_WR_REG(0xCF);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0XC1);
LCD_WR_DATA8(0X30);
LCD_WR_REG(0xE8);
LCD_WR_DATA8(0x85);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x78);
LCD_WR_REG(0xEA);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x00);
LCD_WR_REG(0xED);
LCD_WR_DATA8(0x64);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0X12);
LCD_WR_DATA8(0X81);
LCD_WR_REG(0xF7);
LCD_WR_DATA8(0x20);
LCD_WR_REG(0xC0); //Power control
LCD_WR_DATA8(0x23); //VRH[5:0]
LCD_WR_REG(0xC1); //Power control
LCD_WR_DATA8(0x10); //SAP[2:0];BT[3:0]
LCD_WR_REG(0xC5); //VCM control
LCD_WR_DATA8(0x3e); //对比度调节
LCD_WR_DATA8(0x28);
LCD_WR_REG(0xC7); //VCM control2
LCD_WR_DATA8(0x86); //--
LCD_WR_REG(0x36); // Memory Access Control
LCD_WR_DATA8(0x48); //C8 //48 68竖屏//28 E8 横屏
LCD_WR_REG(0x3A);
LCD_WR_DATA8(0x55);
LCD_WR_REG(0xB1);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x18);
LCD_WR_REG(0xB6); // Display Function Control
LCD_WR_DATA8(0x08);
LCD_WR_DATA8(0x82);
LCD_WR_DATA8(0x27);
LCD_WR_REG(0xF2); // 3Gamma Function Disable
LCD_WR_DATA8(0x00);
LCD_WR_REG(0x26); //Gamma curve selected
LCD_WR_DATA8(0x01);
LCD_WR_REG(0xE0); //Set Gamma
LCD_WR_DATA8(0x0F);
LCD_WR_DATA8(0x31);
LCD_WR_DATA8(0x2B);
LCD_WR_DATA8(0x0C);
LCD_WR_DATA8(0x0E);
LCD_WR_DATA8(0x08);
LCD_WR_DATA8(0x4E);
LCD_WR_DATA8(0xF1);
LCD_WR_DATA8(0x37);
LCD_WR_DATA8(0x07);
LCD_WR_DATA8(0x10);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0x0E);
LCD_WR_DATA8(0x09);
LCD_WR_DATA8(0x00);
LCD_WR_REG(0XE1); //Set Gamma
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x0E);
LCD_WR_DATA8(0x14);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0x11);
LCD_WR_DATA8(0x07);
LCD_WR_DATA8(0x31);
LCD_WR_DATA8(0xC1);
LCD_WR_DATA8(0x48);
LCD_WR_DATA8(0x08);
LCD_WR_DATA8(0x0F);
LCD_WR_DATA8(0x0C);
LCD_WR_DATA8(0x31);
LCD_WR_DATA8(0x36);
LCD_WR_DATA8(0x0F);
LCD_WR_REG(0x11); //Exit Sleep
delayms(120);
LCD_WR_REG(0x29); //Display on
LCD_WR_REG(0x2c);
}
//清屏函数
//Color:要清屏的填充色
void LCD_Clear(u16 Color)
{
u8 VH,VL;
u16 i,j;
VH=Color>>8;
VL=Color;
Address_set(0,0,LCD_W-1,LCD_H-1);
for(i=0;i {
for(j=0;j {
LCD_WR_DATA8(VH);
LCD_WR_DATA8(VL);
}
}
}
//在指定位置显示一个汉字(32*33大小)
//dcolor为内容颜色,gbcolor为背静颜色
void showhanzi(unsigned int x,unsigned int y,unsigned char index)
{
unsigned char i,j;
unsigned char *temp=hanzi;
Address_set(x,y,x+31,y+31); //设置区域
temp+=index*128;
for(j=0;j<128;j++)
{
for(i=0;i<8;i++)
{
if((*temp&(1< {
LCD_WR_DATA(POINT_COLOR);
}
else
{
LCD_WR_DATA(BACK_COLOR);
}
}
temp++;
}
}
//画点
//POINT_COLOR:此点的颜色
void LCD_DrawPoint(u16 x,u16 y)
{
Address_set(x,y,x,y);//设置光标位置
LCD_WR_DATA(POINT_COLOR);
}
//画一个大点
//POINT_COLOR:此点的颜色
void LCD_DrawPoint_big(u16 x,u16 y)
{
LCD_Fill(x-1,y-1,x+1,y+1,POINT_COLOR);
}
//在指定区域内填充指定颜色
//区域大小:
// (xend-xsta)*(yend-ysta)
void LCD_Fill(u16 xsta,u16 ysta,u16 xend,u16 yend,u16 color)
{
u16 i,j;
Address_set(xsta,ysta,xend,yend); //设置光标位置
for(i=ysta;i<=yend;i++)
{
for(j=xsta;j<=xend;j++)LCD_WR_DATA(color);//设置光标位置
}
}
//画线
//x1,y1:起点坐标
//x2,y2:终点坐标
void LCD_DrawLine(u16 x1, u16 y1, u16 x2, u16 y2)
{
u16 t;
int xerr=0,yerr=0,delta_x,delta_y,distance;
int incx,incy,uRow,uCol;
delta_x=x2-x1; //计算坐标增量
delta_y=y2-y1;
uRow=x1;
uCol=y1;
if(delta_x>0)incx=1; //设置单步方向
else if(delta_x==0)incx=0;//垂直线
else {incx=-1;delta_x=-delta_x;}
if(delta_y>0)incy=1;
else if(delta_y==0)incy=0;//水平线
else{incy=-1;delta_y=-delta_y;}
if( delta_x>delta_y)distance=delta_x; //选取基本增量坐标轴
else distance=delta_y;
for(t=0;t<=distance+1;t++ )//画线输出
{
LCD_DrawPoint(uRow,uCol);//画点
xerr+=delta_x ;
yerr+=delta_y ;
if(xerr>distance)
{
xerr-=distance;
uRow+=incx;
}
if(yerr>distance)
{
yerr-=distance;
uCol+=incy;
}
}
}
//画矩形
void LCD_DrawRectangle(u16 x1, u16 y1, u16 x2, u16 y2)
{
LCD_DrawLine(x1,y1,x2,y1);
LCD_DrawLine(x1,y1,x1,y2);
LCD_DrawLine(x1,y2,x2,y2);
LCD_DrawLine(x2,y1,x2,y2);
}
//在指定位置画一个指定大小的圆
//(x,y):中心点
//r :半径
void Draw_Circle(u16 x0,u16 y0,u8 r)
{
int a,b;
int di;
a=0;b=r;
di=3-(r<<1); //判断下个点位置的标志
while(a<=b)
{
LCD_DrawPoint(x0-b,y0-a); //3
LCD_DrawPoint(x0+b,y0-a); //0
LCD_DrawPoint(x0-a,y0+b); //1
LCD_DrawPoint(x0-b,y0-a); //7
LCD_DrawPoint(x0-a,y0-b); //2
LCD_DrawPoint(x0+b,y0+a); //4
LCD_DrawPoint(x0+a,y0-b); //5
LCD_DrawPoint(x0+a,y0+b); //6
LCD_DrawPoint(x0-b,y0+a);
a++;
//使用Bresenham算法画圆
if(di<0)di +=4*a+6;
else
{
di+=10+4*(a-b);
b--;
}
LCD_DrawPoint(x0+a,y0+b);
}
}
//在指定位置显示一个字符
//num:要显示的字符:" "--->"~"
//mode:叠加方式(1)还是非叠加方式(0)
//在指定位置显示一个字符
//num:要显示的字符:" "--->"~"
//mode:叠加方式(1)还是非叠加方式(0)
void LCD_ShowChar(u16 x,u16 y,u8 num,u8 mode)
{
u8 temp;
u8 pos,t;
u16 x0=x;
u16 colortemp=POINT_COLOR;
if(x>LCD_W-16||y>LCD_H-16)return;
//设置窗口
num=num-' ';//得到偏移后的值
Address_set(x,y,x+8-1,y+16-1); //设置光标位置
if(!mode) //非叠加方式
{
for(pos=0;pos<16;pos++)
{
temp=asc2_1608[(u16)num*16+pos]; //调用1608字体
for(t=0;t<8;t++)
{
if(temp&0x01)POINT_COLOR=colortemp;
else POINT_COLOR=BACK_COLOR;
LCD_WR_DATA(POINT_COLOR);
temp>>=1;
x++;
}
x=x0;
y++;
}
}else//叠加方式
{
for(pos=0;pos<16;pos++)
{
temp=asc2_1608[(u16)num*16+pos]; //调用1608字体
for(t=0;t<8;t++)
{
if(temp&0x01)LCD_DrawPoint(x+t,y+pos);//画一个点
temp>>=1;
}
}
}
POINT_COLOR=colortemp;
}
//m^n函数
u32 mypow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//color:颜色
//num:数值(0~4294967295);
void LCD_ShowNum(u16 x,u16 y,u32 num,u8 len)
{
u8 t,temp;
u8 enshow=0;
num=(u16)num;
for(t=0;t {
temp=(num/mypow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
LCD_ShowChar(x+8*t,y,' ',0);
continue;
}else enshow=1;
}
LCD_ShowChar(x+8*t,y,temp+48,0);
}
}
//显示2个数字
//x,y:起点坐标
//num:数值(0~99);
void LCD_Show2Num(u16 x,u16 y,u16 num,u8 len)
{
u8 t,temp;
for(t=0;t {
temp=(num/mypow(10,len-t-1))%10;
LCD_ShowChar(x+8*t,y,temp+'0',0);
}
}
//显示字符串
//x,y:起点坐标
//*p:字符串起始地址
//用16字体
void LCD_ShowString(u16 x,u16 y,const u8 *p)
{
while(*p!='\0')
{
if(x>LCD_W-16){x=0;y+=16;}
if(y>LCD_H-16){y=x=0;}
LCD_ShowChar(x,y,*p,0);
x+=8;
p++;
}
} |