/* * lcd.c * * Created on: Mar 11, 2021 * Author: 13370 */ #include "lcd.h" _lcd_dev lcddev; //管理LCD重要参数 //**************************************************几种快速接口 //写寄存器函数 //regval:寄存器值 void LCD_WR_REG(uint16_t regval) { LCD_REG_ADDRESS=regval;//写入要写的寄存器序号 } //写LCD数据 //data:要写入的值 void LCD_WR_DATA(uint16_t data) { LCD_DATA_ADDRESS=data; } //读LCD数据 //返回值:读到的值 uint16_t LCD_RD_DATA(void) { return LCD_DATA_ADDRESS; } //写寄存器 //LCD_Reg:寄存器地址 //LCD_RegValue:要写入的数据 void LCD_WriteReg(uint16_t LCD_Reg, uint16_t LCD_RegValue) { LCD_REG_ADDRESS = LCD_Reg; //写入要写的寄存器序号 LCD_DATA_ADDRESS = LCD_RegValue;//写入数据 } //读寄存器 //LCD_Reg:寄存器地址 //返回值:读到的数据 uint16_t LCD_ReadReg(uint16_t LCD_Reg) { LCD_REG_ADDRESS=LCD_Reg; //写入要读的寄存器序号 //delay_us(5); return LCD_DATA_ADDRESS; //返回读到的值 } //**************************************************************LCD底层 _lcd_dev lcddev; //LCD开启显示 void LCD_DisplayOn(void) { if(lcddev.id==0X9341||lcddev.id==0X6804||lcddev.id==0X5310)LCD_WR_REG(0X29); //开启显示 else LCD_WriteReg(R7,0x0173); //开启显示 } //LCD关闭显示 void LCD_DisplayOff(void) { if(lcddev.id==0X9341||lcddev.id==0X6804||lcddev.id==0X5310)LCD_WR_REG(0X28); //关闭显示 else LCD_WriteReg(R7,0x0);//关闭显示 } //设置LCD的自动扫描方向 //注意:其他函数可能会受到此函数设置的影响(尤其是9341/6804这两个奇葩), //所以,一般设置为L2R_U2D即可,如果设置为其他扫描方式,可能导致显示不正常. //dir:0~7,代表8个方向(具体定义见lcd.h) //9320/9325/9328/4531/4535/1505/b505/8989/5408/9341/5310等IC已经实际测试 void LCD_Scan_Dir(uint8_t dir) { uint16_t regval=0; uint8_t dirreg=0; uint16_t temp; if(lcddev.dir==1&&lcddev.id!=0X6804)//横屏时，对6804不改变扫描方向！ { switch(dir)//方向转换 { case 0:dir=6;break; case 1:dir=7;break; case 2:dir=4;break; case 3:dir=5;break; case 4:dir=1;break; case 5:dir=0;break; case 6:dir=3;break; case 7:dir=2;break; } } if(lcddev.id==0x9341||lcddev.id==0X6804||lcddev.id==0X5310)//9341/6804/5310,很特殊 { switch(dir) { case L2R_U2D://从左到右,从上到下 regval|=(0<<7)|(0<<6)|(0<<5); break; case L2R_D2U://从左到右,从下到上 regval|=(1<<7)|(0<<6)|(0<<5); break; case R2L_U2D://从右到左,从上到下 regval|=(0<<7)|(1<<6)|(0<<5); break; case R2L_D2U://从右到左,从下到上 regval|=(1<<7)|(1<<6)|(0<<5); break; case U2D_L2R://从上到下,从左到右 regval|=(0<<7)|(0<<6)|(1<<5); break; case U2D_R2L://从上到下,从右到左 regval|=(0<<7)|(1<<6)|(1<<5); break; case D2U_L2R://从下到上,从左到右 regval|=(1<<7)|(0<<6)|(1<<5); break; case D2U_R2L://从下到上,从右到左 regval|=(1<<7)|(1<<6)|(1<<5); break; } dirreg=0X36; if(lcddev.id!=0X5310)regval|=0X08;//5310不需要BGR if(lcddev.id==0X6804)regval|=0x02;//6804的BIT6和9341的反了 LCD_WriteReg(dirreg,regval); if((regval&0X20)||lcddev.dir==1) { if(lcddev.widthlcddev.height)//交换X,Y { temp=lcddev.width; lcddev.width=lcddev.height; lcddev.height=temp; } } LCD_WR_REG(lcddev.setxcmd); LCD_WR_DATA(0);LCD_WR_DATA(0); LCD_WR_DATA((lcddev.width-1)>>8);LCD_WR_DATA((lcddev.width-1)&0XFF); LCD_WR_REG(lcddev.setycmd); LCD_WR_DATA(0);LCD_WR_DATA(0); LCD_WR_DATA((lcddev.height-1)>>8);LCD_WR_DATA((lcddev.height-1)&0XFF); }else { switch(dir) { case L2R_U2D://从左到右,从上到下 regval|=(1<<5)|(1<<4)|(0<<3); break; case L2R_D2U://从左到右,从下到上 regval|=(0<<5)|(1<<4)|(0<<3); break; case R2L_U2D://从右到左,从上到下 regval|=(1<<5)|(0<<4)|(0<<3); break; case R2L_D2U://从右到左,从下到上 regval|=(0<<5)|(0<<4)|(0<<3); break; case U2D_L2R://从上到下,从左到右 regval|=(1<<5)|(1<<4)|(1<<3); break; case U2D_R2L://从上到下,从右到左 regval|=(1<<5)|(0<<4)|(1<<3); break; case D2U_L2R://从下到上,从左到右 regval|=(0<<5)|(1<<4)|(1<<3); break; case D2U_R2L://从下到上,从右到左 regval|=(0<<5)|(0<<4)|(1<<3); break; } if(lcddev.id==0x8989)//8989 IC { dirreg=0X11; regval|=0X6040; //65K }else//其他驱动IC { dirreg=0X03; regval|=1<<12; } LCD_WriteReg(dirreg,regval); } } //设置LCD显示方向 //dir:0,竖屏；1,横屏 void LCD_Display_Dir(uint8_t dir) { if(dir==0) //竖屏 { lcddev.dir=0; //竖屏 lcddev.width=240; lcddev.height=320; if(lcddev.id==0X9341||lcddev.id==0X6804||lcddev.id==0X5310) { lcddev.wramcmd=0X2C; lcddev.setxcmd=0X2A; lcddev.setycmd=0X2B; if(lcddev.id==0X6804||lcddev.id==0X5310) { lcddev.width=320; lcddev.height=480; } }else if(lcddev.id==0X8989) { lcddev.wramcmd=R34; lcddev.setxcmd=0X4E; lcddev.setycmd=0X4F; }else { lcddev.wramcmd=R34; lcddev.setxcmd=R32; lcddev.setycmd=R33; } }else //横屏 { lcddev.dir=1; //横屏 lcddev.width=320; lcddev.height=240; if(lcddev.id==0X9341||lcddev.id==0X5310) { lcddev.wramcmd=0X2C; lcddev.setxcmd=0X2A; lcddev.setycmd=0X2B; }else if(lcddev.id==0X6804) { lcddev.wramcmd=0X2C; lcddev.setxcmd=0X2B; lcddev.setycmd=0X2A; }else if(lcddev.id==0X8989) { lcddev.wramcmd=R34; lcddev.setxcmd=0X4F; lcddev.setycmd=0X4E; }else { lcddev.wramcmd=R34; lcddev.setxcmd=R33; lcddev.setycmd=R32; } if(lcddev.id==0X6804||lcddev.id==0X5310) { lcddev.width=480; lcddev.height=320; } } LCD_Scan_Dir(DFT_SCAN_DIR); //默认扫描方向 } //初始化lcd //该初始化函数可以初始化各种液晶! void LCDx_Init(void) { LCD_BL(0); HAL_Delay(50); // delay 50 ms LCD_WriteReg(0x0000,0x0001); HAL_Delay(50); // delay 50 ms lcddev.id = LCD_ReadReg(0x0000); LCD_WriteReg(0x00E5,0x78F0); LCD_WriteReg(0x0001,0x0100); LCD_WriteReg(0x0002,0x0700); LCD_WriteReg(0x0003,0x1030); LCD_WriteReg(0x0004,0x0000); LCD_WriteReg(0x0008,0x0202); LCD_WriteReg(0x0009,0x0000); LCD_WriteReg(0x000A,0x0000); LCD_WriteReg(0x000C,0x0000); LCD_WriteReg(0x000D,0x0000); LCD_WriteReg(0x000F,0x0000); //power on sequence VGHVGL LCD_WriteReg(0x0010,0x0000); LCD_WriteReg(0x0011,0x0007); LCD_WriteReg(0x0012,0x0000); LCD_WriteReg(0x0013,0x0000); LCD_WriteReg(0x0007,0x0000); //vgh LCD_WriteReg(0x0010,0x1690); LCD_WriteReg(0x0011,0x0227); //delayms(100); //vregiout LCD_WriteReg(0x0012,0x009D); //0x001b //delayms(100); //vom amplitude LCD_WriteReg(0x0013,0x1900); //delayms(100); //vom H LCD_WriteReg(0x0029,0x0025); LCD_WriteReg(0x002B,0x000D); //gamma LCD_WriteReg(0x0030,0x0007); LCD_WriteReg(0x0031,0x0303); LCD_WriteReg(0x0032,0x0003);// 0006 LCD_WriteReg(0x0035,0x0206); LCD_WriteReg(0x0036,0x0008); LCD_WriteReg(0x0037,0x0406); LCD_WriteReg(0x0038,0x0304);//0200 LCD_WriteReg(0x0039,0x0007); LCD_WriteReg(0x003C,0x0602);// 0504 LCD_WriteReg(0x003D,0x0008); //ram LCD_WriteReg(0x0050,0x0000); LCD_WriteReg(0x0051,0x00EF); LCD_WriteReg(0x0052,0x0000); LCD_WriteReg(0x0053,0x013F); LCD_WriteReg(0x0060,0xA700); LCD_WriteReg(0x0061,0x0001); LCD_WriteReg(0x006A,0x0000); // LCD_WriteReg(0x0080,0x0000); LCD_WriteReg(0x0081,0x0000); LCD_WriteReg(0x0082,0x0000); LCD_WriteReg(0x0083,0x0000); LCD_WriteReg(0x0084,0x0000); LCD_WriteReg(0x0085,0x0000); // LCD_WriteReg(0x0090,0x0010); LCD_WriteReg(0x0092,0x0600); LCD_WriteReg(0x0007,0x0133); LCD_WriteReg(0x00,0x0022);// LCD_Display_Dir(1); //默认为h屏 } //***********************************************************打点 读点 什么的 //设置光标位置 //Xpos:横坐标 //Ypos:纵坐标 void LCD_SetCursor(uint16_t Xpos, uint16_t Ypos) { if(lcddev.id==0X9341||lcddev.id==0X5310) { LCD_WR_REG(lcddev.setxcmd); LCD_WR_DATA(Xpos>>8); LCD_WR_DATA(Xpos&0XFF); LCD_WR_REG(lcddev.setycmd); LCD_WR_DATA(Ypos>>8); LCD_WR_DATA(Ypos&0XFF); }else if(lcddev.id==0X6804) { if(lcddev.dir==1)Xpos=lcddev.width-1-Xpos;//横屏时处理 LCD_WR_REG(lcddev.setxcmd); LCD_WR_DATA(Xpos>>8); LCD_WR_DATA(Xpos&0XFF); LCD_WR_REG(lcddev.setycmd); LCD_WR_DATA(Ypos>>8); LCD_WR_DATA(Ypos&0XFF); }else { if(lcddev.dir==1)Xpos=lcddev.width-1-Xpos;//横屏其实就是调转x,y坐标 LCD_WriteReg(lcddev.setxcmd, Xpos); LCD_WriteReg(lcddev.setycmd, Ypos); } } //快速画点 //x,y:坐标 //color:颜色 void LCD_Fast_DrawPoint(uint16_t x,uint16_t y,uint16_t color) { if(lcddev.id==0X9341||lcddev.id==0X5310) { LCD_WR_REG(lcddev.setxcmd); LCD_WR_DATA(x>>8); LCD_WR_DATA(x&0XFF); LCD_WR_REG(lcddev.setycmd); LCD_WR_DATA(y>>8); LCD_WR_DATA(y&0XFF); }else if(lcddev.id==0X6804) { if(lcddev.dir==1)x=lcddev.width-1-x;//横屏时处理 LCD_WR_REG(lcddev.setxcmd); LCD_WR_DATA(x>>8); LCD_WR_DATA(x&0XFF); LCD_WR_REG(lcddev.setycmd); LCD_WR_DATA(y>>8); LCD_WR_DATA(y&0XFF); }else { if(lcddev.dir==1)x=lcddev.width-1-x;//横屏其实就是调转x,y坐标 LCD_WriteReg(lcddev.setxcmd,x); LCD_WriteReg(lcddev.setycmd,y); } LCD_REG_ADDRESS=lcddev.wramcmd; LCD_DATA_ADDRESS=color; } //画点 //x,y:坐标 //POINT_COLOR:此点的颜色 void LCD_set_dot(uint16_t x,uint16_t y,uint16_t color) { LCD_SetCursor(x,y); //设置光标位置 LCD_REG_ADDRESS=lcddev.wramcmd; //开始写入GRAM LCD_DATA_ADDRESS=color; } //清屏函数 //color:要清屏的填充色 void LCD_Clear(uint16_t color) { uint32_t index=0; uint32_t totalpoint=lcddev.width; totalpoint*=lcddev.height; //得到总点数 if((lcddev.id==0X6804)&&(lcddev.dir==1))//6804横屏的时候特殊处理 { lcddev.dir=0; lcddev.setxcmd=0X2A; lcddev.setycmd=0X2B; LCD_SetCursor(0x00,0x0000); //设置光标位置 lcddev.dir=1; lcddev.setxcmd=0X2B; lcddev.setycmd=0X2A; }else LCD_SetCursor(0x00,0x0000); //设置光标位置 LCD_REG_ADDRESS=lcddev.wramcmd; //开始写入GRAM for(index=0;index>0)&0x1f; g=(c>>5)&0x3f; r=(c>>11)&0x1f; rgb=(b<<11)+(g<<5)+(r<<0); return(rgb); } //读取个某点的颜色值 //x,y:坐标 //返回值:此点的颜色 uint16_t LCD_ReadPoint(uint16_t x,uint16_t y) { uint16_t r=0,g=0,b=0; if(x>=lcddev.width||y>=lcddev.height)return 0; //超过了范围,直接返回 LCD_SetCursor(x,y); if(lcddev.id==0X9341||lcddev.id==0X6804||lcddev.id==0X5310)LCD_WR_REG(0X2E);//9341/6804/3510 发送读GRAM指令 else LCD_WR_REG(R34); //其他IC发送读GRAM指令 //if(lcddev.id==0X9320)opt_delay(2); //FOR 9320,延时2us if(LCD_DATA_ADDRESS)r=0; //dummy Read //opt_delay(2); r=LCD_DATA_ADDRESS; //实际坐标颜色 if(lcddev.id==0X9341||lcddev.id==0X5310) //9341/NT35310要分2次读出 { //opt_delay(2); b=LCD_DATA_ADDRESS; g=r&0XFF;//对于9341/5310,第一次读取的是RG的值,R在前,G在后,各占8位 g<<=8; }else if(lcddev.id==0X6804)r=LCD_DATA_ADDRESS; //6804第二次读取的才是真实值 if(lcddev.id==0X9325||lcddev.id==0X4535||lcddev.id==0X4531||lcddev.id==0X8989||lcddev.id==0XB505)return r;//这几种IC直接返回颜色值 else if(lcddev.id==0X9341||lcddev.id==0X5310)return (((r>>11)<<11)|((g>>10)<<5)|(b>>11)); //ILI9341/NT35310需要公式转换一下 else return LCD_BGR2RGB(r); //其他IC } //***********************************2D //画线 //x1,y1:起点坐标 //x2,y2:终点坐标 void LCD_DrawLine(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2,uint16_t color) { uint16_t 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_set_dot(uRow,uCol,color);//画点 xerr+=delta_x ; yerr+=delta_y ; if(xerr>distance) { xerr-=distance; uRow+=incx; } if(yerr>distance) { yerr-=distance; uCol+=incy; } } } //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(uint16_t x0,uint16_t y0,uint16_t r,uint16_t color) { 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_set_dot(x0+a,y0-b,color); //5 LCD_set_dot(x0+b,y0-a,color); //0 LCD_set_dot(x0+b,y0+a,color); //4 LCD_set_dot(x0+a,y0+b,color); //6 LCD_set_dot(x0-a,y0+b,color); //1 LCD_set_dot(x0-b,y0+a,color); LCD_set_dot(x0-a,y0-b,color); //2 LCD_set_dot(x0-b,y0-a,color); //7 a++; //使用Bresenham算法画圆 if(di<0)di +=4*a+6; else { di+=10+4*(a-b); b--; } } }