stm32 系列ili9341lcd屏驱动程序

C文件

#define _LCD_ODEV_C_

#include 'LCD_odev.h'

#include 'fonts.h'    //ASCII×Ö·ûÐÍ×Ö¿â

void LCD_Delay(unsigned short int i)

{

    while(i--);

}

void LCD_wt8bitData(unsigned char da) //·¢ËÍÊý¾Ý-8λ²ÎÊý

{    

    LCD_CS_en();

  LCD_DC_data();

    SPI1_ReadWriteByte(da);  

    LCD_CS_dis();

}

void LCD_wt16bitData(unsigned short int da)

{        

        LCD_CS_en();

    LCD_DC_data();

        SPI1_ReadWriteByte(da>>8);

    SPI1_ReadWriteByte(da&0xFF);

        LCD_CS_dis();

}

void LCD_wtREG(unsigned char cmd) 

{        

    LCD_CS_en();

  LCD_DC_reg();

    SPI1_ReadWriteByte(cmd);

    LCD_CS_dis();

}

void LCD_wtREG_DATA(unsigned char reg,unsigned short int da)

{

  LCD_wtREG(reg);

    LCD_wt16bitData(da);

}

unsigned char LCD_Read_Data(void)

{

    LCD_CS_en();

    LCD_DC_data();

    //´Ë´¦½ûÖ¹disbaleµôCS½Å£¬CS½Å±ØÐëһֱʹÄÜ£¬·ñÔò¶ÁÈ¡µÄÊý¾ÝÈ«ÊÇ0xff

    return SPI1_ReadWriteByte(0xFF);

}

void     ILI9341_io_Init() // ÆäËûÒý½Å³õʼ»¯ 

{

        GPIO_InitTypeDef GPIO_InitStructure;

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB ,  ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA ,  ENABLE);

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;

        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;

        GPIO_Init(GPIOA, &GPIO_InitStructure);

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;

        GPIO_Init(GPIOB, &GPIO_InitStructure);

}

// -------------------------------

void LCD_odev_init(void)

{

    ILI9341_io_Init();

    lcddev.width = LCD_Wide;

    lcddev.height = LCD_High;

    LCD_RST_Clr();

    delay_ms(20);

    LCD_RST_Set();

    delay_ms(20);

    //LCD_BLK_Set();

    //************* Start Initial Sequence **********// 

    LCD_wtREG(0xCF);  

    LCD_wt8bitData(0x00); 

    LCD_wt8bitData(0xD9); 

    LCD_wt8bitData(0X30); 

    LCD_wtREG(0xED);  

    LCD_wt8bitData(0x64); 

    LCD_wt8bitData(0x03); 

    LCD_wt8bitData(0X12); 

    LCD_wt8bitData(0X81); 

    LCD_wtREG(0xE8);  

    LCD_wt8bitData(0x85); 

    LCD_wt8bitData(0x10); 

    LCD_wt8bitData(0x78); 

    LCD_wtREG(0xCB);  

    LCD_wt8bitData(0x39); 

    LCD_wt8bitData(0x2C); 

    LCD_wt8bitData(0x00); 

    LCD_wt8bitData(0x34); 

    LCD_wt8bitData(0x02); 

    LCD_wtREG(0xF7);  

    LCD_wt8bitData(0x20); 

    LCD_wtREG(0xEA);  

    LCD_wt8bitData(0x00); 

    LCD_wt8bitData(0x00); 

    LCD_wtREG(0xC0);    //Power control 

    LCD_wt8bitData(0x21);   //VRH[5:0] 

    LCD_wtREG(0xC1);    //Power control 

    LCD_wt8bitData(0x12);   //SAP[2:0];BT[3:0] 

    LCD_wtREG(0xC5);    //VCM control 

    LCD_wt8bitData(0x32); 

    LCD_wt8bitData(0x3C); 

    LCD_wtREG(0xC7);    //VCM control2 

    LCD_wt8bitData(0XC1); 

    LCD_wtREG(0x36);    // Memory Access Control 

    LCD_wt8bitData(0x68); 

    LCD_wtREG(0x2A);         //ÐеØÖ·ÉèÖÃ

    LCD_wt8bitData(0x00);

    LCD_wt8bitData(0x00);

    LCD_wt8bitData(0x01);

    LCD_wt8bitData(0x3f);

    LCD_wtREG(0x2B);         //ÁеØÖ·ÉèÖÃ

    LCD_wt8bitData(0x00);

    LCD_wt8bitData(0x00);

    LCD_wt8bitData(0x00);

    LCD_wt8bitData(0xef);     

    LCD_wtREG(0x3A);   

    LCD_wt8bitData(0x55); 

    LCD_wtREG(0xB1);   

    LCD_wt8bitData(0x00);   

    LCD_wt8bitData(0x18); 

    LCD_wtREG(0xB6);    // Display Function Control 

    LCD_wt8bitData(0x0A); 

    LCD_wt8bitData(0xA2); 

    LCD_wtREG(0xF2);    // 3Gamma Function Disable 

    LCD_wt8bitData(0x00); 

    LCD_wtREG(0x26);    //Gamma curve selected 

    LCD_wt8bitData(0x01); 

    LCD_wtREG(0xE0);    //Set Gamma 

    LCD_wt8bitData(0x0F); 

    LCD_wt8bitData(0x20); 

    LCD_wt8bitData(0x1E); 

    LCD_wt8bitData(0x09); 

    LCD_wt8bitData(0x12); 

    LCD_wt8bitData(0x0B); 

    LCD_wt8bitData(0x50); 

    LCD_wt8bitData(0XBA); 

    LCD_wt8bitData(0x44); 

    LCD_wt8bitData(0x09); 

    LCD_wt8bitData(0x14); 

    LCD_wt8bitData(0x05); 

    LCD_wt8bitData(0x23); 

    LCD_wt8bitData(0x21); 

    LCD_wt8bitData(0x00); 

    LCD_wtREG(0XE1);    //Set Gamma 

    LCD_wt8bitData(0x00); 

    LCD_wt8bitData(0x19); 

    LCD_wt8bitData(0x19); 

    LCD_wt8bitData(0x00); 

    LCD_wt8bitData(0x12); 

    LCD_wt8bitData(0x07); 

    LCD_wt8bitData(0x2D); 

    LCD_wt8bitData(0x28); 

    LCD_wt8bitData(0x3F); 

    LCD_wt8bitData(0x02); 

    LCD_wt8bitData(0x0A); 

    LCD_wt8bitData(0x08); 

    LCD_wt8bitData(0x25); 

    LCD_wt8bitData(0x2D); 

    LCD_wt8bitData(0x0F); 

    LCD_wtREG(0x11);    //Exit Sleep 

    delay_ms(120); 

    LCD_wtREG(0x29);    //Display on 

    lcddev.bled = BLEDoff;

} 

unsigned short int LCD_Read_Point(unsigned short int cx,unsigned short int cy)

{

    unsigned char r=0,g=0,b=0;

    LCD_set_windows(cx,cy,cx,cy);

    LCD_wtREG(0x2E);

    LCD_Read_Data();        //Ö»ÐèÒªÖ´ÐÐÒ»´Î¿Õ¶ÁÈ¡

    r = LCD_Read_Data();

    g = LCD_Read_Data();

    b = LCD_Read_Data();

    LCD_wtREG(0x2C);        //¹Ø¼ü²½Ö裬±ØÐëÒªÓÐ

    return (((r>>3)<<11)|((g>>2)<<5)|(b>>3));

}

void LCD_restar(void)        //Èí¼þ¸´Î»Ö¸Áî²»ÄÜÔÚÍ˳ö˯ÃßÐòÁÐʱ·¢ËÍ

{

    LCD_wtREG(0x01);

    delay_ms(250);

}

void LCD_inSleep(void)

{

    LCD_wtREG(0x28);        //display TURNOFF

    delay_ms(50);

    LCD_wtREG(0x10);        //sleep ENABLE

    LCD_BLK_Clr();

}

void LCD_outSleep(void)

{

    LCD_wtREG(0x11);        //sleep DISABLE

    delay_ms(50);

    LCD_wtREG(0x29);        //display TURNON

    LCD_BLK_Set();

}

unsigned char LCD_onDisp(void)

{

    LCD_wtREG(0x29);        //display TURNON

    return BLEDon;

}

unsigned char LCD_offDisp(void)

{

    LCD_wtREG(0x28);        //display TURNOFF

    return BLEDoff;

}

/****************************************************

*** º¯Êý¹¦ÄÜ£ºÇóÏÔʾµÄµãÕóÃæ»ý

*** Èë¿Ú²ÎÊý£ºm:ºá×ø±ê

***           n:×Ý×ø±ê

****************************************************/

//m^nº¯Êý

//·µ»ØÖµ:m^n´Î·½.

unsigned long LCD_Pow(unsigned char m,unsigned char n)

{

    unsigned long result=1;     

    while(n--)result*=m;    

    return result;

}

/****************************************************

*** º¯Êý¹¦ÄÜ£ºÉèÖùâ±êλÖ㬼´ÉèÖÃÏÔʾµÄÆðʼ×ø±ê

*** Èë¿Ú²ÎÊý£ºXpos:ºá×ø±ê

***           Ypos:×Ý×ø±ê

****************************************************/

void LCD_SetCursor(unsigned short int Xpos, unsigned short int Ypos)

{

    LCD_wtREG_DATA(Xreg ,Xpos);    

    LCD_wtREG_DATA(Yreg ,Ypos);

}

/****************************************************

*** º¯Êý¹¦ÄÜ£ºÉèÖÃÏÔʾ´°¿Ú£¬¼´´´½¨Ò»¸öÏÔʾ´°¿Ú

*** Èë¿Ú²ÎÊý£ºx1,y1-->Æðʼ×ø±ê

***          x2,y2-->ÖÕµã×ø±ê

****************************************************/

void LCD_set_windows(unsigned short int x1,unsigned short int y1,unsigned short int x2,unsigned short int y2)

{ 

    LCD_wtREG(0x2a);

    LCD_wt16bitData(x1);

    LCD_wt16bitData(x2);

    LCD_wtREG(0x2b);

    LCD_wt16bitData(y1);

    LCD_wt16bitData(y2);

    LCD_wtREG(0x2C);