ILI9341初始化方法

/*-----------------------------------------------*/

// Write control registers of LCD module  

// 

/*-----------------------------------------------*/

#if PH_CTRL_RS

void LCD_WR_REG(uint16_t cmd)

{

    CLR_RS

    EBI0_WRITE_DATA16(0x00000000, cmd);

    SET_RS



}



#else

void LCD_WR_REG(uint16_t cmd)

{

    EBI0_WRITE_DATA16(0x00000000, cmd);

}



#endif





/*-----------------------------------------------*/

// Write data to SRAM of LCD module  

// 

/*-----------------------------------------------*/

void LCD_WR_DATA(uint16_t dat)

{

    EBI0_WRITE_DATA16(0x00030000, dat);



}





/*-----------------------------------------------*/

// Read data from SRAM of LCD module 

// 

/*-----------------------------------------------*/

uint16_t LCD_RD_DATA(void)

{

    return EBI0_READ_DATA16(0x00030000);



}



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

*

*       LcdWriteDataMultiple

*

*   Function description:

*   Writes multiple values to a display register.

*/

static void LcdWriteDataMultiple(uint16_t * pData, int NumItems)

{

    while (NumItems--) {

        EBI0_WRITE_DATA16(0x00030000,*pData++);

    }

}



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

*

*       LcdReadDataMultiple

*

*   Function description:

*   Reads multiple values from a display register.

*/

static void LcdReadDataMultiple(uint16_t * pData, int NumItems)

{

    while (NumItems--) {

        *pData++ = EBI0_READ_DATA16(0x00030000);

    }

}



/*-----------------------------------------------*/

// Set cursor positon on the LCD screen 

// 

/*-----------------------------------------------*/

#if 0

void LCD_SetCursor(uint16_t x_s, uint16_t y_s)

{ 

    uint16_t x_e = x_s+1;

    uint16_t y_e = y_s+1;

        

    /* X range */

    LCD_WR_REG(0x2A);

    LCD_WR_DATA(x_s>>8);

    LCD_WR_DATA(x_s);

    LCD_WR_DATA(x_e>>8);

    LCD_WR_DATA(x_e);



    /* Y range */

    LCD_WR_REG(0x2B);

    LCD_WR_DATA(y_s>>8);

    LCD_WR_DATA(y_s);

    LCD_WR_DATA(y_e>>8);

    LCD_WR_DATA(y_e);

        

    /* Memory write */

    LCD_WR_REG(0x2C);

    

}

#endif



/*-----------------------------------------------*/

// Initial LIL9341 LCD driver chip 

// 

/*-----------------------------------------------*/

void ILI9341_Initial(void)

{

    uint16_t Reg = 0;

    

    /* Hardware reset */

    SET_RST;

    CLK_SysTickDelay(5000);     // Delay 5ms

    

    CLR_RST;

    CLK_SysTickDelay(20000);    // Delay 20ms

    

    SET_RST;

    CLK_SysTickDelay(40000);    // Delay 40ms



    /* Initial control registers */

    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(0xCF);

    LCD_WR_DATA(0x00);

    LCD_WR_DATA(0xC1);

    LCD_WR_DATA(0x30);



    LCD_WR_REG(0xE8);

    LCD_WR_DATA(0x85);

    LCD_WR_DATA(0x00);

    LCD_WR_DATA(0x78);



    LCD_WR_REG(0xEA);

    LCD_WR_DATA(0x00);

    LCD_WR_DATA(0x00);



    LCD_WR_REG(0xED);

    LCD_WR_DATA(0x64);

    LCD_WR_DATA(0x03);

    LCD_WR_DATA(0x12);

    LCD_WR_DATA(0x81);



    LCD_WR_REG(0xF7);

    LCD_WR_DATA(0x20);



    LCD_WR_REG(0xC0);

    LCD_WR_DATA(0x23);



    LCD_WR_REG(0xC1);

    LCD_WR_DATA(0x10);



    LCD_WR_REG(0xC5);

    LCD_WR_DATA(0x3e);

    LCD_WR_DATA(0x28);



    LCD_WR_REG(0xC7);

    LCD_WR_DATA(0x86);



    LCD_WR_REG(0x36);

    LCD_WR_DATA(0x48);



    LCD_WR_REG(0x3A);

    LCD_WR_DATA(0x55);

        

    LCD_WR_REG(0xB1);

    LCD_WR_DATA(0x00);

    LCD_WR_DATA(0x18);



    LCD_WR_REG(0xB6);

    LCD_WR_DATA(0x08);

    LCD_WR_DATA(0x82);

    LCD_WR_DATA(0x27);



    LCD_WR_REG(0xF2);

    LCD_WR_DATA(0x00);



    LCD_WR_REG(0x26);

    LCD_WR_DATA(0x01);



    LCD_WR_REG(0xE0);

    LCD_WR_DATA(0x0F);

    LCD_WR_DATA(0x31);

    LCD_WR_DATA(0x2B);

    LCD_WR_DATA(0x0C);

    LCD_WR_DATA(0x0E);

    LCD_WR_DATA(0x08);

    LCD_WR_DATA(0x4E);

    LCD_WR_DATA(0xF1);

    LCD_WR_DATA(0x37);

    LCD_WR_DATA(0x07);

    LCD_WR_DATA(0x10);

    LCD_WR_DATA(0x03);

    LCD_WR_DATA(0x0E);

    LCD_WR_DATA(0x09);

    LCD_WR_DATA(0x00);



    LCD_WR_REG(0xE1);

    LCD_WR_DATA(0x00);

    LCD_WR_DATA(0x0E);

    LCD_WR_DATA(0x14);

    LCD_WR_DATA(0x03);

    LCD_WR_DATA(0x11);

    LCD_WR_DATA(0x07);

    LCD_WR_DATA(0x31);

    LCD_WR_DATA(0xC1);

    LCD_WR_DATA(0x48);

    LCD_WR_DATA(0x08);

    LCD_WR_DATA(0x0F);

    LCD_WR_DATA(0x0C);

    LCD_WR_DATA(0x31);

    LCD_WR_DATA(0x36);

    LCD_WR_DATA(0x0F);



    LCD_WR_REG(0x11);

    CLK_SysTickDelay(200000);   // Delay 200ms

    

    LCD_WR_REG(0x29);           //Display on



    LCD_WR_REG(0x0A);

    Reg = LCD_RD_DATA();

    Reg = LCD_RD_DATA();

    printf("0Ah = %02x.\n", Reg);

    

    LCD_WR_REG(0x0B);

    Reg = LCD_RD_DATA();

    Reg = LCD_RD_DATA();

    printf("0Bh = %02x.\n", Reg);

    

    LCD_WR_REG(0x0C);

    Reg = LCD_RD_DATA();

    Reg = LCD_RD_DATA();

    printf("0Ch = %02x.\n", Reg);



    printf("Initial ILI9341 LCD Module done.\n\n");



}