学习STM32编程LCD显示实验

　　关键代码：
　　lcd.c//写寄存器函数 //regval:寄存器值 void LCD_WR_REG(vu16 regval) {    	regval=regval;		//使用-O2优化的时候,必须插入的延时 	LCD->LCD_REG=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(vu16 data) {	   	data=data;			//使用-O2优化的时候,必须插入的延时 	LCD->LCD_RAM=data;		  } //读LCD数据 //返回值:读到的值 u16 LCD_RD_DATA(void) { 	vu16 ram;			//防止被优化 	ram=LCD->LCD_RAM;	 	return ram;	  }					    //写寄存器 //LCD_Reg:寄存器地址 //LCD_RegValue:要写入的数据 void LCD_WriteReg(u16 LCD_Reg,u16 LCD_RegValue) {	 	LCD->LCD_REG = LCD_Reg;		//写入要写的寄存器序号	  	LCD->LCD_RAM = 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 u16 LCD_ReadReg(u16 LCD_Reg) {										    	LCD_WR_REG(LCD_Reg);		//写入要读的寄存器序号 	delay_us(5);		   	return LCD_RD_DATA();		//返回读到的值 }    //开始写GRAM void LCD_WriteRAM_Prepare(void) {  	LCD->LCD_REG=lcddev.wramcmd;	   }	  //LCD写GRAM //RGB_Code:颜色值 void LCD_WriteRAM(u16 RGB_Code) {							     	LCD->LCD_RAM = RGB_Code;//写十六位GRAM } //读取个某点的颜色值	  //x,y:坐标 //返回值:此点的颜色 u16 LCD_ReadPoint(u16 x,u16 y) {  	u16 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 == 0X5510)    //5510 发送读GRAM指令     {         LCD_WR_REG(0X2E00);     }     else                        //其他IC(9341/5310/1963/7789)发送读GRAM指令     {         LCD_WR_REG(0X2E);     }  	r=LCD_RD_DATA();								//dummy Read	        if (lcddev.id == 0X1963)    //对1963来说,是真读     {         return r;               //1963直接读就可以     }     r = LCD_RD_DATA();          //实际坐标颜色      //9341/5310/5510/7789 要分2次读出     b = LCD_RD_DATA();     g = r & 0XFF;               //对于 9341/5310/5510/7789, 第一次读取的是RG的值,R在前,G在后,各占8位     g <<= 8;     return (((r >> 11) << 11) | ((g >> 10) << 5) | (b >> 11));  // 9341/5310/5510/7789 需要公式转换一下 }			   //LCD开启显示 void LCD_DisplayOn(void) {					        if (lcddev.id == 0X5510)    //5510开启显示指令     {         LCD_WR_REG(0X2900);     //开启显示     }     else                        //9341/5310/1963/7789 等发送开启显示指令     {         LCD_WR_REG(0X29);       //开启显示     } } //LCD关闭显示 void LCD_DisplayOff(void) {	        if (lcddev.id == 0X5510)    //5510关闭显示指令     {         LCD_WR_REG(0X2800);     //关闭显示     }     else                        //9341/5310/1963/7789 等发送关闭显示指令     {         LCD_WR_REG(0X28);       //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) {      //9341/5310/7789等设置坐标     {         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);     } } //画点 //x,y:坐标 //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_WriteRAM_Prepare();	//开始写入GRAM 	LCD->LCD_RAM=POINT_COLOR;  } //SSD1963 背光设置 //pwm:背光等级,0~100.越大越亮. void LCD_SSD_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 } //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) { 	 	vu32 i=0; 	 	GPIO_InitTypeDef  GPIO_InitStructure; 	FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure; 	FSMC_NORSRAMTimingInitTypeDef  readWriteTiming;  	FSMC_NORSRAMTimingInitTypeDef  writeTiming;  	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB|RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOE|RCC_AHB1Periph_GPIOF|RCC_AHB1Periph_GPIOG, ENABLE);//使能PD,PE,PF,PG时钟   	RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC,ENABLE);//使能FSMC时钟     	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;//PB15 推挽输出,控制背光 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//普通输出模式 	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出 	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz 	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化 //PB15 推挽输出,控制背光  	GPIO_InitStructure.GPIO_Pin = (3<<0)|(3<<4)|(7<<8)|(3<<14);//PD0,1,4,5,8,9,10,14,15 AF OUT 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出 	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出 	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz 	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 	GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化    	GPIO_InitStructure.GPIO_Pin = (0X1FF<<7);//PE7~15,AF OUT 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出 	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出 	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz 	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 	GPIO_Init(GPIOE, &GPIO_InitStructure);//初始化    	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//PF12,FSMC_A6 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出 	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出 	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz 	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 	GPIO_Init(GPIOF, &GPIO_InitStructure);//初始化    	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//PF12,FSMC_A6 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出 	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出 	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz 	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 	GPIO_Init(GPIOG, &GPIO_InitStructure);//初始化   	GPIO_PinAFConfig(GPIOD,GPIO_PinSource0,GPIO_AF_FSMC);//PD0,AF12 	GPIO_PinAFConfig(GPIOD,GPIO_PinSource1,GPIO_AF_FSMC);//PD1,AF12 	GPIO_PinAFConfig(GPIOD,GPIO_PinSource4,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOD,GPIO_PinSource5,GPIO_AF_FSMC);  	GPIO_PinAFConfig(GPIOD,GPIO_PinSource8,GPIO_AF_FSMC);  	GPIO_PinAFConfig(GPIOD,GPIO_PinSource9,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOD,GPIO_PinSource10,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOD,GPIO_PinSource14,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOD,GPIO_PinSource15,GPIO_AF_FSMC);//PD15,AF12  	GPIO_PinAFConfig(GPIOE,GPIO_PinSource7,GPIO_AF_FSMC);//PE7,AF12 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource8,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource9,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource10,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource11,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource12,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource13,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource14,GPIO_AF_FSMC); 	GPIO_PinAFConfig(GPIOE,GPIO_PinSource15,GPIO_AF_FSMC);//PE15,AF12  	GPIO_PinAFConfig(GPIOF,GPIO_PinSource12,GPIO_AF_FSMC);//PF12,AF12 	GPIO_PinAFConfig(GPIOG,GPIO_PinSource12,GPIO_AF_FSMC);   	readWriteTiming.FSMC_AddressSetupTime = 0XF;	 //地址建立时间（ADDSET）为16个HCLK 1/168M=6ns*16=96ns	 	readWriteTiming.FSMC_AddressHoldTime = 0x00;	 //地址保持时间（ADDHLD）模式A未用到	 	readWriteTiming.FSMC_DataSetupTime = 60;			//数据保存时间为60个HCLK	=6*60=360ns 	readWriteTiming.FSMC_BusTurnAroundDuration = 0x00; 	readWriteTiming.FSMC_CLKDivision = 0x00; 	readWriteTiming.FSMC_DataLatency = 0x00; 	readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A;	 //模式A        	writeTiming.FSMC_AddressSetupTime =9;	      //地址建立时间（ADDSET）为9个HCLK =54ns  	writeTiming.FSMC_AddressHoldTime = 0x00;	 //地址保持时间（A		 	writeTiming.FSMC_DataSetupTime = 8;		 //数据保存时间为6ns*9个HCLK=54ns 	writeTiming.FSMC_BusTurnAroundDuration = 0x00; 	writeTiming.FSMC_CLKDivision = 0x00; 	writeTiming.FSMC_DataLatency = 0x00; 	writeTiming.FSMC_AccessMode = FSMC_AccessMode_A;	 //模式A    	FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;//  这里我们使用NE4 ，也就对应BTCR[6],[7]。 	FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; // 不复用数据地址 	FSMC_NORSRAMInitStructure.FSMC_MemoryType =FSMC_MemoryType_SRAM;// FSMC_MemoryType_SRAM;  //SRAM    	FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;//存储器数据宽度为16bit    	FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode =FSMC_BurstAccessMode_Disable;// FSMC_BurstAccessMode_Disable;  	FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; 	FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait=FSMC_AsynchronousWait_Disable;  	FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;    	FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;   	FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;	//  存储器写使能 	FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;    	FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; // 读写使用不同的时序 	FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;  	FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming; //读写时序 	FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming;  //写时序  	FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);  //初始化FSMC配置  	FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);  // 使能BANK1  		  	delay_ms(50); // delay 50 ms  	 	//尝试9341 ID的读取		 	LCD_WR_REG(0XD3);				    	lcddev.id=LCD_RD_DATA();	//dummy read 	 	lcddev.id=LCD_RD_DATA();	//读到0X00 	lcddev.id=LCD_RD_DATA();   	//读取93								    	lcddev.id<<=8; 	lcddev.id|=LCD_RD_DATA();  	//读取41     if(lcddev.id==0X9341||lcddev.id == 0X7789 ||lcddev.id==0X5310||lcddev.id==0X5510||lcddev.id==0X1963)//如果是这几个IC,则设置WR时序为最快 	{ 		//重新配置写时序控制寄存器的时序   	 							     		FSMC_Bank1E->BWTR[6]&=~(0XF<<0);//地址建立时间(ADDSET)清零 	  		FSMC_Bank1E->BWTR[6]&=~(0XF<<8);//数据保存时间清零 		FSMC_Bank1E->BWTR[6]|=3<<0;		//地址建立时间(ADDSET)为3个HCLK =18ns  	          if(lcddev.id == 0X7789)         {             FSMC_Bank1E->BWTR[6]|=3<<8; 	//数据保存时间(DATAST)为6ns*3个HCLK=18ns         }         else         {             FSMC_Bank1E->BWTR[6]|=2<<8; 	//数据保存时间(DATAST)为6ns*3个HCLK=18ns         } 	}  	printf(＂ LCD ID:%xr ＂,lcddev.id); //打印LCD ID 	if(lcddev.id==0X9341)	//9341初始化 	{	  		LCD_WR_REG(0xCF);   		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0xC1);  		LCD_WR_DATA(0X30);  		LCD_WR_REG(0xED);   		LCD_WR_DATA(0x64);  		LCD_WR_DATA(0x03);  		LCD_WR_DATA(0X12);  		LCD_WR_DATA(0X81);  		LCD_WR_REG(0xE8);   		LCD_WR_DATA(0x85);  		LCD_WR_DATA(0x10);  		LCD_WR_DATA(0x7A);  		LCD_WR_REG(0xCB);   		LCD_WR_DATA(0x39);  		LCD_WR_DATA(0x2C);  		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0x34);  		LCD_WR_DATA(0x02);  		LCD_WR_REG(0xF7);   		LCD_WR_DATA(0x20);  		LCD_WR_REG(0xEA);   		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0x00);  		LCD_WR_REG(0xC0);    //Power control  		LCD_WR_DATA(0x1B);   //VRH[5:0]  		LCD_WR_REG(0xC1);    //Power control  		LCD_WR_DATA(0x01);   //SAP[2:0];BT[3:0]  		LCD_WR_REG(0xC5);    //VCM control  		LCD_WR_DATA(0x30); 	 //3F 		LCD_WR_DATA(0x30); 	 //3C 		LCD_WR_REG(0xC7);    //VCM control2  		LCD_WR_DATA(0XB7);  		LCD_WR_REG(0x36);    // Memory Access Control  		LCD_WR_DATA(0x48);  		LCD_WR_REG(0x3A);    		LCD_WR_DATA(0x55);  		LCD_WR_REG(0xB1);    		LCD_WR_DATA(0x00);    		LCD_WR_DATA(0x1A);  		LCD_WR_REG(0xB6);    // Display Function Control  		LCD_WR_DATA(0x0A);  		LCD_WR_DATA(0xA2);  		LCD_WR_REG(0xF2);    // 3Gamma Function Disable  		LCD_WR_DATA(0x00);  		LCD_WR_REG(0x26);    //Gamma curve selected  		LCD_WR_DATA(0x01);  		LCD_WR_REG(0xE0);    //Set Gamma  		LCD_WR_DATA(0x0F);  		LCD_WR_DATA(0x2A);  		LCD_WR_DATA(0x28);  		LCD_WR_DATA(0x08);  		LCD_WR_DATA(0x0E);  		LCD_WR_DATA(0x08);  		LCD_WR_DATA(0x54);  		LCD_WR_DATA(0XA9);  		LCD_WR_DATA(0x43);  		LCD_WR_DATA(0x0A);  		LCD_WR_DATA(0x0F);  		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0x00); 		  		LCD_WR_REG(0XE1);    //Set Gamma  		LCD_WR_DATA(0x00);  		LCD_WR_DATA(0x15);  		LCD_WR_DATA(0x17);  		LCD_WR_DATA(0x07);  		LCD_WR_DATA(0x11);  		LCD_WR_DATA(0x06);  		LCD_WR_DATA(0x2B);  		LCD_WR_DATA(0x56);  		LCD_WR_DATA(0x3C);  		LCD_WR_DATA(0x05);  		LCD_WR_DATA(0x10);  		LCD_WR_DATA(0x0F);  		LCD_WR_DATA(0x3F);  		LCD_WR_DATA(0x3F);  		LCD_WR_DATA(0x0F);  		LCD_WR_REG(0x2B);  		LCD_WR_DATA(0x00); 		LCD_WR_DATA(0x00); 		LCD_WR_DATA(0x01); 		LCD_WR_DATA(0x3f); 		LCD_WR_REG(0x2A);  		LCD_WR_DATA(0x00); 		LCD_WR_DATA(0x00); 		LCD_WR_DATA(0x00); 		LCD_WR_DATA(0xef);	  		LCD_WR_REG(0x11); //Exit Sleep 		delay_ms(120); 		LCD_WR_REG(0x29); //display on	 	}   LCD_Display_Dir(0);		//默认为竖屏 	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;     u32 totalpoint = lcddev.width;     totalpoint *= lcddev.height;    //得到总点数      LCD_SetCursor(0x00, 0x0000);    //设置光标位置     LCD_WriteRAM_Prepare();         //开始写入GRAM      for (index = 0; index < totalpoint; index++)     {         LCD->LCD_RAM=color;     } }
　　main.cint main(void) {   	u8 x=0; 	u8 lcd_id[12];				//存放LCD ID字符串 	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置系统中断优先级分组2 	delay_init(168);      //初始化延时函数 	uart_init(115200);		//初始化串口波特率为115200 	 	LED_Init();					  //初始化LED  	LCD_Init();           //初始化LCD FSMC接口 	POINT_COLOR=RED;      //画笔颜色：红色 	sprintf((char*)lcd_id,＂LCD ID:%04X＂,lcddev.id);//将LCD ID打印到lcd_id数组。				 	   	while(1)  	{		  		switch(x) 		{ 			case 0:LCD_Clear(WHITE);break; 			case 1:LCD_Clear(BLACK);break; 			case 2:LCD_Clear(BLUE);break; 			case 3:LCD_Clear(RED);break; 			case 4:LCD_Clear(MAGENTA);break; 			case 5:LCD_Clear(GREEN);break; 			case 6:LCD_Clear(CYAN);break;  			case 7:LCD_Clear(YELLOW);break; 			case 8:LCD_Clear(BRRED);break; 			case 9:LCD_Clear(GRAY);break; 			case 10:LCD_Clear(LGRAY);break; 			case 11:LCD_Clear(BROWN);break; 		} 		POINT_COLOR=RED;	   		LCD_ShowString(30,40,210,24,24,＂Explorer STM32F4＂);	 		LCD_ShowString(30,70,200,16,16,＂TFTLCD TEST＂); 		LCD_ShowString(30,90,200,16,16,＂ATOM@ALIENTEK＂);  		LCD_ShowString(30,110,200,16,16,lcd_id);		//显示LCD ID	      					  		LCD_ShowString(30,130,200,12,12,＂2014/5/4＂);	      					  	    x++; 		if(x==12)x=0; 		LED0=!LED0;	  		delay_ms(1000);	 	}  }