用STM32开发的TFT液晶显示程序

#include"usart.h" #include"delay.h" #include"ILI93XX.h" #include"font.h" //画笔颜色,背景颜色 u16 POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF; u16 DeviceCode; #if LCD_FAST_IO==1 //快速IO /************************* //写寄存器函数 **************************/ void LCD_WR_REG(u8 data) { LCD_RS_CLR;//写地址 LCD_CS_CLR; DATAOUT(data); LCD_WR_CLR; LCD_WR_SET; LCD_CS_SET; } #endif /************************* //写寄存器 **************************/ void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue) { LCD_WR_REG(LCD_Reg); LCD_WR_DATA(LCD_RegValue); } /************************* //读寄存器 //IO口先设置为输入，读，再重新设置为输出 **************************/ u16 LCD_ReadReg(u8 LCD_Reg) { u16 t; LCD_WR_REG(LCD_Reg); //写入要读的寄存器号 GPIOB->CRL=0X88888888; //PB0-7 上拉输入 GPIOB->CRH=0X88888888; //PB8-15 上拉输入 GPIOB->ODR=0XFFFF; //全部输出高 #if LCD_FAST_IO==1 //快速IO LCD_RS_SET; LCD_CS_CLR; //读取数据(读寄存器时,并不需要读2次) LCD_RD_CLR; delay_us(5);//FOR 8989,延时5us LCD_RD_SET; t=DATAIN; LCD_CS_SET; #endif GPIOB->CRL=0X33333333; //PB0-7 上拉输出 GPIOB->CRH=0X33333333; //PB8-15 上拉输出 GPIOB->ODR=0XFFFF; //全部输出高 return t; } /************************* //开始写GRAM **************************/ void LCD_WriteRAM_Prepare(void) { LCD_WR_REG(R34); //单个操作命令，只需写入该值即可 } /************************* //LCD写GRAM **************************/ void LCD_WriteRAM(u16 RGB_Code) { LCD_WR_DATA(RGB_Code);//写十六位GRAM } /************************* //从ILI93xx读出的数据为GBR格式，而我们写入的时候为RGB格式。 //通过该函数转换 //c:GBR格式的颜色值 //返回值：RGB格式的颜色值 **************************/ u16 LCD_BGR2RGB(u16 c) { u16 r,g,b,rgb; b=(c>>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:0~239 //y:0~319 //返回值:此点的颜色 **************************/ u16 LCD_ReadPoint(u16 x,u16 y) { u16 t; if(x>=LCD_W||y>=LCD_H)return 0;//超过了范围，直接返回 LCD_SetCursor(x,y); LCD_WR_REG(R34); GPIOB->CRL=0X88888888; //PBIO 全部上拉输入 GPIOB->CRH=0X88888888; GPIOB->ODR=0XFFFF; //全部输出高 #if LCD_FAST_IO==1 LCD_RS_SET; LCD_CS_CLR; //读取数据(读GRAM时,需要读2次) LCD_RD_CLR; LCD_RD_SET; delay_us(2);//FOR 9320,延时2us //dummy READ LCD_RD_CLR; delay_us(2);//FOR 8989,延时2us LCD_RD_SET; t=DATAIN; LCD_CS_SET; #endif GPIOB->CRL=0X33333333; //PBIO 全部上拉输出 GPIOB->CRH=0X33333333; GPIOB->ODR=0XFFFF; // PBIO 全部输出高 return LCD_BGR2RGB(t); } /************************* //LCD开启显示 *************************/ void LCD_DisplayOn(void) { LCD_WriteReg(R7,0x0173);///26万色显示开启 } /************************* //LCD关闭显示 *************************/ void LCD_DisplayOff(void) { LCD_WriteReg(R7,0x0);//关闭显示 } /************************* //设置光标位置 //Xpos:横坐标 //Ypos:纵坐标 *************************/ void LCD_SetCursor(u16 Xpos,u16 Ypos) { #if USE_HORIZONTAL==1 //定义是否使用横屏 0,不使用.1,使用. if(DeviceCode==0x8989) { LCD_WriteReg(0x4e,Ypos); LCD_WriteReg(0x4e,319-Xpos); } else { LCD_WriteReg(R32,Ypos); LCD_WriteReg(R33,319-Xpos); } #else if(DeviceCode==0x8989) { LCD_WriteReg(0x4e,Xpos); LCD_WriteReg(0x4f,Ypos); } else { LCD_WriteReg(R32,Xpos); LCD_WriteReg(R33,Ypos); } #endif } /************************* //画点 //x:0~239 //y:0~319 //POINT_COLOR:此点的颜色 *************************/ void LCD_DrawPoint(u16 x,u16 y) { LCD_SetCursor(x,y);//设置光标位置 LCD_WR_REG(R34);//开始写入GRAM LCD_WR_DATA(POINT_COLOR); } /************************* //初始化lcd //该初始化函数可以初始化各种ILI93XX液晶,但是其他函数是基于ILI9320的!!! //在其他型号的驱动芯片上没有测试! *************************/ void LCD_Init(void) { RCC->APB2ENR|=1<<3;//先使能外设PORTB时钟 RCC->APB2ENR|=1<<4;//先使能外设PORTC时钟 RCC->APB2ENR|=1<<0; //开启辅助时钟 JTAG_Set(SWD_ENABLE); //开启SWD //PORTC6~10复用推挽输出 GPIOC->CRH&=0XFFFFF000; GPIOC->CRH|=0X00000333; GPIOC->CRL&=0X00FFFFFF; GPIOC->CRL|=0X33000000; GPIOC->ODR|=0X07C0; //PORTB 推挽输出 GPIOB->CRH=0X33333333; GPIOB->CRL=0X33333333; GPIOB->ODR=0XFFFF; delay_ms(50); // delay 50 ms LCD_WriteReg(0x0000,0x0001); delay_ms(50); // delay 50 ms DeviceCode = LCD_ReadReg(0x0000); if(DeviceCode==0x9325) { 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_LED=1;//点亮背光 LCD_Clear(WHITE); } /************************* //清屏函数 //Color:要清屏的填充色 *************************/ void LCD_Clear(u16 Color) { u32 index=0; LCD_SetCursor(0x00,0x0000);//设置光标位置 LCD_WriteRAM_Prepare();//开始写GRANM for(index=0;index<76800;index++) { LCD_WR_DATA(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; u16 xlen=0; #if USE_HORIZONTAL==1 //定义是否使用横屏 0,不使用.1,使用. xlen=yend-ysta+1; for(i=xsta;i<=xend;i++) { LCD_SetCursor(i,ysta); //设置光标位置 LCD_WriteRAM_Prepare();//开始写入GRAM for(j=0;j<xlen;j++) { LCD_WR_DATA(color);//设置光标 } } #else xlen=xend-xsta+1; for(i=ysta;i<=yend;i++) { LCD_SetCursor(xsta,i); //设置光标位置 LCD_WriteRAM_Prepare();//开始写入GRAM for(j=0;j<xlen;j++) { LCD_WR_DATA(color);//设置光标 } } #endif } /************************* //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;//设置单步方向 else if(delta