/************************************************************************************ //STM32连接引脚是指TFTLCD插槽引脚内部连接的STM32引脚 //=========================================电源接线================================================// // LCD模块 TFTLCD插槽引脚 STM32连接引脚 // VDD ---> 5V DC5V //电源 // GND ---> GND GND //电源地 //=======================================液晶屏数据线接线==========================================// //本模块默认数据总线类型为16位并口总线 // LCD模块 TFTLCD插槽引脚 STM32连接引脚 // D0~D15 ---> D0~D15 PB0~PB15 //液晶屏16位并口数据信号（8位模式：DB0~DB7接D0~D7） //=======================================液晶屏控制线接线==========================================// // LCD模块 TFTLCD插槽引脚 STM32连接引脚 // WR ---> WR PC7 //液晶屏写数据控制信号 // RD ---> RD PC6 //液晶屏读数据控制信号 // RS ---> RS PC8 //液晶屏数据/命令控制信号 // RST ---> RST PC4 //液晶屏复位控制信号 // CS ---> CS PC9 //液晶屏片选控制信号 // BL ---> BL PC10 //液晶屏背光控制信号 //=========================================触摸屏触接线=========================================// //如果模块不带触摸功能或者带有触摸功能，但是不需要触摸功能，则不需要进行触摸屏接线 // LCD模块 TFTLCD插槽引脚 STM32连接引脚 // INI ---> PEN PC1 //触摸屏触摸中断信号 // SDA ---> MOSI PC3 //触摸屏IIC总线数据信号 // CRST ---> TCS PC13 //触摸屏复位信号 // CLK ---> CLK PC0 //触摸屏IIC总线时钟信号 **************************************************************************************************/ #include "lcd.h" #include "stdlib.h" #include "delay.h" //管理LCD重要参数 //默认为竖屏 _lcd_dev lcddev; //画笔颜色,背景颜色 u16 POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF; u16 DeviceCode; void LCD_write(u16 VAL) { LCD_CS_CLR; DATAOUT(VAL); LCD_WR_CLR; LCD_WR_SET; LCD_CS_SET; } u16 LCD_read(void) { u16 data; LCD_CS_CLR; LCD_RD_CLR; delay_us(1);//延时1us data = DATAIN; LCD_RD_SET; LCD_CS_SET; return data; } /***************************************************************************** * @name :void LCD_WR_REG(u16 data) * @date :2018-08-09 * @function :Write an 16-bit command to the LCD screen * @parameters :data:Command value to be written * @retvalue :None ******************************************************************************/ void LCD_WR_REG(u16 data) { LCD_RS_CLR; LCD_write(data); } /***************************************************************************** * @name :void LCD_WR_DATA(u16 data) * @date :2018-08-09 * @function :Write an 16-bit data to the LCD screen * @parameters :data:data value to be written * @retvalue :None ******************************************************************************/ void LCD_WR_DATA(u16 data) { LCD_RS_SET; LCD_write(data); } /***************************************************************************** * @name :u16 LCD_RD_DATA(void) * @date :2018-11-13 * @function :Read an 16-bit value from the LCD screen * @parameters :None * @retvalue :read value ******************************************************************************/ u16 LCD_RD_DATA(void) { LCD_RS_SET; return LCD_read(); } /***************************************************************************** * @name :void LCD_WriteReg(u16 LCD_Reg, u16 LCD_RegValue) * @date :2018-08-09 * @function :Write data into registers * @parameters :LCD_Reg:Register address LCD_RegValue:Data to be written * @retvalue :None ******************************************************************************/ void LCD_WriteReg(u16 LCD_Reg, u16 LCD_RegValue) { LCD_WR_REG(LCD_Reg); LCD_WR_DATA(LCD_RegValue); } /***************************************************************************** * @name :u16 LCD_ReadReg(u16 LCD_Reg) * @date :2018-11-13 * @function :read value from specially registers * @parameters :LCD_Reg:Register address * @retvalue :read value ******************************************************************************/ void LCD_ReadReg(u16 LCD_Reg,u8 *Rval,int n) { LCD_WR_REG(LCD_Reg); 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 while(n--) { *(Rval++) = LCD_RD_DATA(); } 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 } /***************************************************************************** * @name :void LCD_WriteRAM_Prepare(void) * @date :2018-08-09 * @function :Write GRAM * @parameters :None * @retvalue :None ******************************************************************************/ void LCD_WriteRAM_Prepare(void) { LCD_WR_REG(lcddev.wramcmd); } /***************************************************************************** * @name :void LCD_ReadRAM_Prepare(void) * @date :2018-11-13 * @function :Read GRAM * @parameters :None * @retvalue :None ******************************************************************************/ void LCD_ReadRAM_Prepare(void) { LCD_WR_REG(lcddev.rramcmd); } /***************************************************************************** * @name :void Lcd_WriteData_16Bit(u16 Data) * @date :2018-08-09 * @function :Write an 16-bit command to the LCD screen * @parameters :Data:Data to be written * @retvalue :None ******************************************************************************/ void Lcd_WriteData_16Bit(u16 Data) { LCD_RS_SET; #if LCD_USE8BIT_MODEL LCD_CS_CLR; DATAOUT((Data>>8)&0xF8); LCD_WR_CLR; LCD_WR_SET; DATAOUT((Data>>3)&0xFC); LCD_WR_CLR; LCD_WR_SET; DATAOUT(Data<<3); LCD_WR_CLR; LCD_WR_SET; LCD_CS_SET; #else LCD_write(Data); #endif } u16 Color_To_565(u8 r, u8 g, u8 b) { return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | ((b & 0xF8) >> 3); } /***************************************************************************** * @name :u16 Lcd_ReadData_16Bit(void) * @date :2018-11-13 * @function :Read an 16-bit value from the LCD screen * @parameters :None * @retvalue :read value ******************************************************************************/ u16 Lcd_ReadData_16Bit(void) { u16 r=0; #if LCD_USE8BIT_MODEL u16 g=0,b=0; #endif LCD_RS_SET; LCD_CS_CLR; //16bit: red green and blue data //8bit:red data LCD_RD_CLR; delay_us(1);//延时1us r = DATAIN; LCD_RD_SET; #if LCD_USE8BIT_MODEL //8bit:green data LCD_RD_CLR; delay_us(1);//延时1us g = DATAIN; LCD_RD_SET; //8bit:blue data LCD_RD_CLR; delay_us(1);//延时1us b = DATAIN; LCD_RD_SET; r=Color_To_565(r, g, b); #endif LCD_CS_SET; return r; } /***************************************************************************** * @name :void LCD_DrawPoint(u16 x,u16 y) * @date :2018-08-09 * @function :Write a pixel data at a specified location * @parameters :x:the x coordinate of the pixel y:the y coordinate of the pixel * @retvalue :None ******************************************************************************/ void LCD_DrawPoint(u16 x,u16 y) { LCD_SetCursor(x,y);//设置光标位置 Lcd_WriteData_16Bit(POINT_COLOR); } /***************************************************************************** * @name :u16 LCD_ReadPoint(u16 x,u16 y) * @date :2018-11-13 * @function :Read a pixel color value at a specified location * @parameters :x:the x coordinate of the pixel y:the y coordinate of the pixel * @retvalue :the read color value ******************************************************************************/ u16 LCD_ReadPoint(u16 x,u16 y) { u16 color; if(x>=lcddev.width||y>=lcddev.height) { return 0; //超过了范围,直接返回 } LCD_SetCursor(x,y);//设置光标位置 LCD_ReadRAM_Prepare(); 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 color = Lcd_ReadData_16Bit(); 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 color; } /***************************************************************************** * @name :void LCD_Clear(u16 Color) * @date :2018-08-09 * @function :Full screen filled LCD screen * @parameters :color:Filled color * @retvalue :None ******************************************************************************/ void LCD_Clear(u16 Color) { unsigned int i;//,m; LCD_SetWindows(0,0,lcddev.width-1,lcddev.height-1); LCD_RS_SET; LCD_CS_CLR; for(i=0;i>8)&0xF8); LCD_WR_CLR; LCD_WR_SET; DATAOUT((Color>>3)&0xFC); LCD_WR_CLR; LCD_WR_SET; DATAOUT(Color<<3); LCD_WR_CLR; LCD_WR_SET; #else DATAOUT(Color); LCD_WR_CLR; LCD_WR_SET; #endif } LCD_CS_SET; } /***************************************************************************** * @name :void LCD_PWM_BackLightSet(u8 pwm) * @date :2020-05-13 * @function :Set the backlight brightness from PWM * @parameters :pwm:pwm value 0~100, The greater the value, the brighter * @retvalue :None ******************************************************************************/ void LCD_PWM_BackLightSet(u8 pwm) { LCD_WR_REG(0xBE); //配置PWM输出 LCD_WR_DATA(0x05); //1设置PWM频率 LCD_WR_DATA(pwm*2.55);//2设置PWM占空比 LCD_WR_DATA(0x01); //3设置C LCD_WR_DATA(0xFF); //4设置D LCD_WR_DATA(0x00); //5设置E LCD_WR_DATA(0x00); //6设置F } /***************************************************************************** * @name :void LCD_GPIOInit(void) * @date :2018-08-09 * @function :Initialization LCD screen GPIO * @parameters :None * @retvalue :None ******************************************************************************/ void LCD_GPIOInit(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO,ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable , ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10| GPIO_Pin_7| GPIO_Pin_8| GPIO_Pin_9 | GPIO_Pin_6 | GPIO_Pin_4; //GPIOC10,6,7,8,9,4 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出 GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_SetBits(GPIOC,GPIO_Pin_10|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_6|GPIO_Pin_4); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; // GPIO_Init(GPIOB, &GPIO_InitStructure); //GPIOB GPIO_SetBits(GPIOB,GPIO_Pin_All); } /***************************************************************************** * @name :void LCD_RESET(void) * @date :2018-08-09 * @function :Reset LCD screen * @parameters :None * @retvalue :None ******************************************************************************/ void LCD_RESET(void) { LCD_RST_CLR; delay_ms(100); LCD_RST_SET; delay_ms(50); } /***************************************************************************** * @name :void LCD_Init(void) * @date :2018-08-09 * @function :Initialization LCD screen * @parameters :None * @retvalue :None ******************************************************************************/ void LCD_Init(void) { LCD_GPIOInit();//LCD GPIO初始化 LCD_RESET(); //LCD 复位 //************* SSD1963初始化**********// LCD_WR_REG(0xE2); //Set PLL with OSC = 10MHz (hardware), Multiplier N = 35, 250MHz < VCO < 800MHz = OSC*(N+1), VCO = 300MHz LCD_WR_DATA(0x1D); //参数1 LCD_WR_DATA(0x02); //参数2 Divider M = 2, PLL = 300/(M+1) = 100MHz LCD_WR_DATA(0x04); //参数3 Validate M and N values delay_us(100); LCD_WR_REG(0xE0); // Start PLL command LCD_WR_DATA(0x01); // enable PLL delay_ms(10); LCD_WR_REG(0xE0); // Start PLL command again LCD_WR_DATA(0x03); // now, use PLL output as system clock delay_ms(12); LCD_WR_REG(0x01); //软复位 delay_ms(10); LCD_WR_REG(0xE6); //设置像素频率,33Mhz LCD_WR_DATA(0x03); LCD_WR_DATA(0xFF); LCD_WR_DATA(0xFF); LCD_WR_REG(0xB0); //设置LCD模式 LCD_WR_DATA(0x00); //18位模式 LCD_WR_DATA(0x00); //TFT 模式 LCD_WR_DATA((SSD_HOR_RESOLUTION-1)>>8);//设置LCD水平像素 LCD_WR_DATA(SSD_HOR_RESOLUTION-1); LCD_WR_DATA((SSD_VER_RESOLUTION-1)>>8);//设置LCD垂直像素 LCD_WR_DATA(SSD_VER_RESOLUTION-1); LCD_WR_DATA(0x00); //RGB序列 LCD_WR_REG(0xB4); //Set horizontal period LCD_WR_DATA((SSD_HT-1)>>8); LCD_WR_DATA(SSD_HT-1); LCD_WR_DATA(SSD_HPS>>8); LCD_WR_DATA(SSD_HPS); LCD_WR_DATA(SSD_HOR_PULSE_WIDTH-1); LCD_WR_DATA(0x00); LCD_WR_DATA(0x00); LCD_WR_DATA(0x00); LCD_WR_REG(0xB6); //Set vertical period LCD_WR_DATA((SSD_VT-1)>>8); LCD_WR_DATA(SSD_VT-1); LCD_WR_DATA(SSD_VPS>>8); LCD_WR_DATA(SSD_VPS); LCD_WR_DATA(SSD_VER_FRONT_PORCH-1); LCD_WR_DATA(0x00); LCD_WR_DATA(0x00); LCD_WR_REG(0xF0); //设置SSD1963与CPU接口为16bit #if LCD_USE8BIT_MODEL LCD_WR_DATA(0x00); //8-bit(565 format) data for 16bpp #else LCD_WR_DATA(0x03); //16-bit(565 format) data for 16bpp #endif LCD_WR_REG(0x29); //开启显示 //设置PWM输出 背光通过占空比可调 LCD_WR_REG(0xD0); //设置自动白平衡DBC LCD_WR_DATA(0x00); //disable LCD_WR_REG(0xBE); //配置PWM输出 LCD_WR_DATA(0x05); //1设置PWM频率 LCD_WR_DATA(0xFE); //2设置PWM占空比 LCD_WR_DATA(0x01); //3设置C LCD_WR_DATA(0x00); //4设置D LCD_WR_DATA(0x00); //5设置E LCD_WR_DATA(0x00); //6设置F LCD_WR_REG(0xB8); //设置GPIO配置 LCD_WR_DATA(0x07); //2个IO口设置成输出 LCD_WR_DATA(0x01); //GPIO使用正常的IO功能 LCD_WR_REG(0xBA); LCD_WR_DATA(0X01); //GPIO[1:0]=01,控制LCD方向 LCD_PWM_BackLightSet(100);//背光设置为最亮 LCD_direction(USE_HORIZONTAL);//设置LCD显示方向 LCD_LED=1;//点亮背光 LCD_Clear(WHITE);//清全屏白色 } /***************************************************************************** * @name :void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd) * @date :2018-08-09 * @function :Setting LCD display window * @parameters :xStar:the bebinning x coordinate of the LCD display window yStar:the bebinning y coordinate of the LCD display window xEnd:the endning x coordinate of the LCD display window yEnd:the endning y coordinate of the LCD display window * @retvalue :None ******************************************************************************/ void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd) { switch(lcddev.dir) { case 0: xStar=xStar+xEnd; xEnd=xStar-xEnd; xStar=xStar-xEnd; xStar=lcddev.width-xStar-1; xEnd=lcddev.width-xEnd-1; break; case 2: yStar=yStar+yEnd; yEnd=yStar-yEnd; yStar=yStar-yEnd; yStar=lcddev.height-yStar-1; yEnd=lcddev.height-yEnd-1; break; case 3: xStar=xStar+xEnd; xEnd=xStar-xEnd; xStar=xStar-xEnd; xStar=lcddev.width-xStar-1; xEnd=lcddev.width-xEnd-1; yStar=yStar+yEnd; yEnd=yStar-yEnd; yStar=yStar-yEnd; yStar=lcddev.height-yStar-1; yEnd=lcddev.height-yEnd-1; break; default: break; } LCD_WR_REG(lcddev.setxcmd); LCD_WR_DATA(xStar>>8); LCD_WR_DATA(0x00FF&xStar); LCD_WR_DATA(xEnd>>8); LCD_WR_DATA(0x00FF&xEnd); LCD_WR_REG(lcddev.setycmd); LCD_WR_DATA(yStar>>8); LCD_WR_DATA(0x00FF&yStar); LCD_WR_DATA(yEnd>>8); LCD_WR_DATA(0x00FF&yEnd); LCD_WriteRAM_Prepare(); //开始写入GRAM } /***************************************************************************** * @name :void LCD_SetCursor(u16 Xpos, u16 Ypos) * @date :2018-08-09 * @function :Set coordinate value * @parameters :Xpos:the x coordinate of the pixel Ypos:the y coordinate of the pixel * @retvalue :None ******************************************************************************/ void LCD_SetCursor(u16 Xpos, u16 Ypos) { LCD_SetWindows(Xpos,Ypos,Xpos,Ypos); } /***************************************************************************** * @name :void LCD_direction(u8 direction) * @date :2018-08-09 * @function :Setting the display direction of LCD screen * @parameters :direction:0-0 degree 1-90 degree 2-180 degree 3-270 degree * @retvalue :None ******************************************************************************/ void LCD_direction(u8 direction) { lcddev.wramcmd=0x2C; lcddev.rramcmd=0x2E; lcddev.dir=direction%4; switch(lcddev.dir){ case 0: lcddev.setxcmd=0x2B; lcddev.setycmd=0x2A; lcddev.width=LCD_W; lcddev.height=LCD_H; LCD_WriteReg(0x36,(0<<3)|(1<<7)|(0<<6)|(1<<5)); break; case 1: lcddev.setxcmd=0x2A; lcddev.setycmd=0x2B; lcddev.width=LCD_H; lcddev.height=LCD_W; LCD_WriteReg(0x36,(0<<3)|(0<<7)|(0<<6)|(0<<5)); break; case 2: lcddev.setxcmd=0x2B; lcddev.setycmd=0x2A; lcddev.width=LCD_W; lcddev.height=LCD_H; LCD_WriteReg(0x36,(0<<3)|(0<<7)|(1<<6)|(1<<5)); break; case 3: lcddev.setxcmd=0x2A; lcddev.setycmd=0x2B; lcddev.width=LCD_H; lcddev.height=LCD_W; LCD_WriteReg(0x36,(0<<3)|(1<<7)|(1<<6)|(0<<5)); break; default:break; } } /***************************************************************************** * @name :u16 LCD_Read_ID(void) * @date :2018-11-13 * @function :Read ID * @parameters :None * @retvalue :ID value ******************************************************************************/ u16 LCD_Read_ID(void) { u8 val[3] = {0}; LCD_ReadReg(0xA1,val,3); return (val[1]<<8)|val[2]; }