新闻中心

EEPW首页>嵌入式系统>设计应用> STM32学习笔记——TFT2.4彩屏显示字符和汉字

STM32学习笔记——TFT2.4彩屏显示字符和汉字

作者： 时间：2016-11-28 来源：网络 收藏
利用彩屏显示汉字、字符和字符串，需要先完成彩屏的驱动程序，然后在驱动程序的基础上再编写应用程序。

本文引用地址：//m.amcfsurvey.com/article/201611/322858.htm

彩屏的驱动程序如果写好的话，就可以一直使用了，精力主要集中在应用程序的编写就可以了，但是移植的话，要移植驱动程序。其实移植也只是改变那些很底层的靠近处理器的那部分代码。

代码如下，注释比较详细，看懂了基本就可以了。

驱动程序的头文件LCD_driver.h如下：

#defineucharunsignedchar

#defineuintunsignedint

#defineBus_16//16位数据模式,如果使用8位模式，请注释此语句，如果使用16位模式，请打开此句

#defineLCD_DataPortHP1//高8位数据口,8位模式下只使用高8位

#defineLCD_DataPortLP0//低8位数据口,8位模式下低8位可以不接线

#defineLCD_WRGPIO_Pin_2//WR引脚定义P2^5

#defineLCD_RSGPIO_Pin_1//RS引脚定义P2^6

#defineLCD_CSGPIO_Pin_0//CS引脚定义P2^7

#defineLCD_RSTGPIO_Pin_11//RST引脚定义P3^3

#defineLCD_RDGPIO_Pin_8//RD引脚定义P3^2

#defineLCD_SIZE_X240//彩屏的分辨率为240*320

#defineLCD_SIZE_Y320

externuintcolors[];

voidLCD_Init(void);//LCD初始化函数

voidLCD_ShowString(uintx,uinty,uintFor_color,uintBk_color,char*p);//写字符串函数

voidLCD_ShowChar(uintx,uinty,uintFor_color,uintBk_color,charch);//写字符函数

voidChineseChar(uintx,uinty,intsize,uintFor_color,uintBk_color,charc);//写汉字函数

voiddelayms(intcount);

//voidLCD_Writ_Bus(charVH,charVL);//8位模式下的总线写函数

voidLCD_Writ_Bus(uintVH,uintVL);//16位模式下的总线写函数

voidLCD_Write_COM(charVH,charVL);//写命令函数

voidLCD_Write_DATA(charVH,charVL);//写数据函数

voidPant(charVH,charVL);//涂满彩屏函数

voidAddress_set(unsignedintx1,unsignedinty1,unsignedintx2,unsignedinty2);//设置地址范围函数

驱动程序Lcd.c文件如下：

#include"stm32f10x_lib.h"

#include"LCD_driver.h"

#include"chinese.h"

#include"char.h"

#defineLCD_rest(x)x?GPIO_SetBits(GPIOA,LCD_RST):GPIO_ResetBits(GPIOA,LCD_RST)//自己定义位操作函数

#defineLCD_rd(x)x?GPIO_SetBits(GPIOA,LCD_RD):GPIO_ResetBits(GPIOA,LCD_RD)

#defineLCD_rs(x)x?GPIO_SetBits(GPIOB,LCD_RS):GPIO_ResetBits(GPIOB,LCD_RS)

#defineLCD_wr(x)x?GPIO_SetBits(GPIOB,LCD_WR):GPIO_ResetBits(GPIOB,LCD_WR)

#defineLCD_cs(x)x?GPIO_SetBits(GPIOB,LCD_CS):GPIO_ResetBits(GPIOB,LCD_CS)

uintcolors[]=

{

0xf800,0x07e0,0x001f,0xffe0,0x0000,0x07ff,0xf81f,0xffff//颜色数据是16位的

};

voidLCD_Init(void)//lcd初始化

{

LCD_rest(1);

delayms(5);

LCD_rest(0);

delayms(5);

LCD_rest(1);

delayms(5);

LCD_cs(0);//打开片选使能

//

LCD_Write_COM(0x00,0xE5);LCD_Write_DATA(0x78,0xF0);//setSRAMinternaltiming

LCD_Write_COM(0x00,0x01);LCD_Write_DATA(0x01,0x00);//setSSandSMbit

LCD_Write_COM(0x00,0x02);LCD_Write_DATA(0x07,0x00);//set1lineinversion

LCD_Write_COM(0x00,0x03);LCD_Write_DATA(0x10,0x30);//setGRAMwritedirectionandBGR=1.

LCD_Write_COM(0x00,0x04);LCD_Write_DATA(0x00,0x00);//Resizeregister

LCD_Write_COM(0x00,0x08);LCD_Write_DATA(0x02,0x07);//setthebackporchandfrontporch

LCD_Write_COM(0x00,0x09);LCD_Write_DATA(0x00,0x00);//setnon-displayarearefreshcycleISC[3:0]

LCD_Write_COM(0x00,0x0A);LCD_Write_DATA(0x00,0x00);//FMARKfunction

LCD_Write_COM(0x00,0x0C);LCD_Write_DATA(0x00,0x00);//RGBinterfacesetting

LCD_Write_COM(0x00,0x0D);LCD_Write_DATA(0x00,0x00);//FramemarkerPosition

LCD_Write_COM(0x00,0x0F);LCD_Write_DATA(0x00,0x00);//RGBinterfacepolarity

//

LCD_Write_COM(0x00,0x10);LCD_Write_DATA(0x00,0x00);//SAP,BT[3:0],AP,DSTB,SLP,STB

LCD_Write_COM(0x00,0x11);LCD_Write_DATA(0x00,0x07);//DC1[2:0],DC0[2:0],VC[2:0]

LCD_Write_COM(0x00,0x12);LCD_Write_DATA(0x00,0x00);//VREG1OUTvoltage

LCD_Write_COM(0x00,0x13);LCD_Write_DATA(0x00,0x00);//VDV[4:0]forVCOMamplitude

LCD_Write_COM(0x00,0x07);LCD_Write_DATA(0x00,0x01);

delayms(50);//Dis-chargecapacitorpowervoltage

LCD_Write_COM(0x00,0x10);LCD_Write_DATA(0x10,0x90);//1490//SAP,BT[3:0],AP,DSTB,SLP,STB

LCD_Write_COM(0x00,0x11);LCD_Write_DATA(0x02,0x27);//DC1[2:0],DC0[2:0],VC[2:0]

delayms(50);//Delay50ms

LCD_Write_COM(0x00,0x12);LCD_Write_DATA(0x00,0x1F);//001C//Internalreferencevoltage=Vci;

delayms(50);//Delay50ms

LCD_Write_COM(0x00,0x13);LCD_Write_DATA(0x15,0x00);//0x1000//1400SetVDV[4:0]forVCOMamplitude1A00

LCD_Write_COM(0x00,0x29);LCD_Write_DATA(0x00,0x27);//0x0012//001aSetVCM[5:0]forVCOMH//0x00250034

LCD_Write_COM(0x00,0x2B);LCD_Write_DATA(0x00,0x0D);//SetFrameRate000C

delayms(50);//Delay50ms

LCD_Write_COM(0x00,0x20);LCD_Write_DATA(0x00,0x00);//GRAMhorizontalAddress

LCD_Write_COM(0x00,0x21);LCD_Write_DATA(0x00,0x00);//GRAMVerticalAddress

//-----------AdjusttheGammaCurve----------//

LCD_Write_COM(0x00,0x30);LCD_Write_DATA(0x00,0x00);

LCD_Write_COM(0x00,0x31);LCD_Write_DATA(0x07,0x07);

LCD_Write_COM(0x00,0x32);LCD_Write_DATA(0x03,0x07);

LCD_Write_COM(0x00,0x35);LCD_Write_DATA(0x02,0x00);

LCD_Write_COM(0x00,0x36);LCD_Write_DATA(0x00,0x08);//0207

LCD_Write_COM(0x00,0x37);LCD_Write_DATA(0x00,0x04);//0306

LCD_Write_COM(0x00,0x38);LCD_Write_DATA(0x00,0x00);//0102

LCD_Write_COM(0x00,0x39);LCD_Write_DATA(0x07,0x07);//0707

LCD_Write_COM(0x00,0x3C);LCD_Write_DATA(0x00,0x02);//0702

LCD_Write_COM(0x00,0x3D);LCD_Write_DATA(0x1D,0x04);//1604

//------------------SetGRAMarea---------------//

LCD_Write_COM(0x00,0x50);LCD_Write_DATA(0x00,0x00);//HorizontalGRAMStartAddress

LCD_Write_COM(0x00,0x51);LCD_Write_DATA(0x00,0xEF);//HorizontalGRAMEndAddress

LCD_Write_COM(0x00,0x52);LCD_Write_DATA(0x00,0x00);//VerticalGRAMStartAddress

LCD_Write_COM(0x00,0x53);LCD_Write_DATA(0x01,0x3F);//VerticalGRAMStartAddress

LCD_Write_COM(0x00,0x60);LCD_Write_DATA(0xA7,0x00);//GateScanLine

LCD_Write_COM(0x00,0x61);LCD_Write_DATA(0x00,0x01);//NDL,VLE,REV

LCD_Write_COM(0x00,0x6A);LCD_Write_DATA(0x00,0x00);//setscrollingline

//--------------PartialDisplayControl---------//

LCD_Write_COM(0x00,0x80);LCD_Write_DATA(0x00,0x00);

LCD_Write_COM(0x00,0x81);LCD_Write_DATA(0x00,0x00);

LCD_Write_COM(0x00,0x82);LCD_Write_DATA(0x00,0x00);

LCD_Write_COM(0x00,0x83);LCD_Write_DATA(0x00,0x00);

LCD_Write_COM(0x00,0x84);LCD_Write_DATA(0x00,0x00);

LCD_Write_COM(0x00,0x85);LCD_Write_DATA(0x00,0x00);

//--------------PanelControl-------------------//

LCD_Write_COM(0x00,0x90);LCD_Write_DATA(0x00,0x10);

LCD_Write_COM(0x00,0x92);LCD_Write_DATA(0x06,0x00);

LCD_Write_COM(0x00,0x07);LCD_Write_DATA(0x01,0x33);//262KcoloranddisplayON

LCD_cs(1);//关闭片选使能

}

voiddelayms(intcount)//

{

inti,j;

for(i=0;i

for(j=0;j<100;j++);

}

#ifdefBus_16//条件编译-16位数据模式

//并行写入数据把数据分为高8位VH和低8位VL

voidLCD_Writ_Bus(uintVH,uintVL)//并行数据写入函数

{

//LCD_DataPortH=VH;//高位P1口

//屏蔽高8位将数据送到PA0-PA7

GPIOA->BSRR=VH&0x00ff;

GPIOA->BRR=(~VH)&0x00ff;

//GPIO_SetBits(GPIOA,VH&0x00ff);

//GPIO_ResetBits(GPIOA,(~VH&0x00ff));

//LCD_DataPortL=VL;//低位P0口

//屏蔽低8位将数据送到PB8-PB15

GPIOB->BSRR=(VL)<<8&0xff00;

GPIOB->BRR=((~VL)<<8)&0xff00;

LCD_wr(0);

LCD_wr(1);

}


上一页 1 2 3 下一页

关键词：STM32学习笔记TFT24彩屏显示字

评论


相关推荐

技术专区

关闭