STM32學習筆記——TFT2.4彩屏顯示字符和漢字

彩屏的驅動程序如果寫好的話，就可以一直使用了，精力主要集中在應用程序的編寫就可以了，但是移植的話，要移植驅動程序。其實移植也只是改變那些很底層的靠近處理器的那部分代碼。

代碼如下，注釋比較詳細，看懂了基本就可以了。

驅動程序的頭文件LCD_driver.h如下：

#defineucharunsignedchar

#defineuintunsignedint

#defineBus_16//16位數據模式,如果使用8位模式，請注釋此語句，如果使用16位模式，請打開此句

#defineLCD_DataPortHP1//高8位數據口,8位模式下只使用高8位

#defineLCD_DataPortLP0//低8位數據口,8位模式下低8位可以不接線

#defineLCD_WRGPIO_Pin_2//WR引腳定義P2^5

#defineLCD_RSGPIO_Pin_1//RS引腳定義P2^6

#defineLCD_CSGPIO_Pin_0//CS引腳定義P2^7

#defineLCD_RSTGPIO_Pin_11//RST引腳定義P3^3

#defineLCD_RDGPIO_Pin_8//RD引腳定義P3^2

#defineLCD_SIZE_X240//彩屏的分辨率為240*320

#defineLCD_SIZE_Y320

externuintcolors[];

voidLCD_Init(void);//LCD初始化函數

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

voidLCD_ShowChar(uintx,uinty,uintFor_color,uintBk_color,charch);//寫字符函數

voidChineseChar(uintx,uinty,intsize,uintFor_color,uintBk_color,charc);//寫漢字函數

voiddelayms(intcount);

//voidLCD_Writ_Bus(charVH,charVL);//8位模式下的總線寫函數

voidLCD_Writ_Bus(uintVH,uintVL);//16位模式下的總線寫函數

voidLCD_Write_COM(charVH,charVL);//寫命令函數

voidLCD_Write_DATA(charVH,charVL);//寫數據函數

voidPant(charVH,charVL);//涂滿彩屏函數

voidAddress_set(unsignedintx1,unsignedinty1,unsignedintx2,unsignedinty2);//設置地址范圍函數

驅動程序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)//自己定義位操作函數

#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//顏色數據是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);//打開片選使能

//

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);//關閉片選使能

}

voiddelayms(intcount)//

{

inti,j;

for(i=0;i

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

}

#ifdefBus_16//條件編譯-16位數據模式

//并行寫入數據把數據分為高8位VH和低8位VL

voidLCD_Writ_Bus(uintVH,uintVL)//并行數據寫入函數

{

//LCD_DataPortH=VH;//高位P1口

//屏蔽高8位將數據送到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位將數據送到PB8-PB15

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

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

LCD_wr(0);

LCD_wr(1);

}