glcd_lowlevel.h File Reference

#include "types.h"

Go to the source code of this file.

Functions
void	__LCD_LL_Init (u16 orientation)
u16	__LCD_LL_GetPointColor (u16 x, u16 y)
void	__LCD_LL_SetPointColor (u16 rgb565, u16 x, u16 y)
void	__LCD_LL_FillScreen (u16 color)

Function Documentation

__LCD_LL_FillScreen()

void __LCD_LL_FillScreen

(

u16

color

)

Definition at line 374 of file glcd_lowlevel.c.

{
    // Sets the GRAM cursor to the top-left corner of the display
    if (s_model_code == HX8347D || s_model_code == HX8347A)
    {
        write_to(0x02, 0x00);
        write_to(0x03, 0x00);
        write_to(0x04, 0x00);
        write_to(0x05, 0xEF);
        write_to(0x06, 0x00);
        write_to(0x07, 0x00);
        write_to(0x08, 0x01);
        write_to(0x09, 0x3F);
    }
    else
        set_gram_cursor(0, 0);
 
    init_rw_operation_at(0x0022); // Write GRAM
    for (u32 index = 0; index < LCDMaxX * LCDMaxY; index++)
        do_write(color & 0xFFFF);
}

__LCD_LL_GetPointColor()

u16 __LCD_LL_GetPointColor	(	u16	x,
		u16	y
	)

Definition at line 334 of file glcd_lowlevel.c.

{
    u16 dummy;
 
    set_gram_cursor(x, y);
    init_rw_operation_at(0x0022); // Write GRAM
 
    switch (s_model_code)
    {
    case ST7781:
    case LGDP4531:
    case LGDP4535:
    case SSD1289:
    case SSD1298:
        dummy = do_read(); /* Empty read */
        dummy = do_read();
        return dummy;
    case HX8347A:
    case HX8347D: {
        dummy = do_read(); /* Empty read */
 
        const u8 red = do_read() >> 3;
        const u8 green = do_read() >> 2;
        const u8 blue = do_read() >> 3;
        dummy = (u16)((red << 11) | (green << 5) | blue);
        return dummy;
    }
    default:               /* 0x9320 0x9325 0x9328 0x9331 0x5408 0x1505 0x0505 0x9919 */
        dummy = do_read(); /* Empty read */
        dummy = do_read();
        return dummy;
    }
}

__LCD_LL_Init()

void __LCD_LL_Init

(

u16

orientation

)

Definition at line 228 of file glcd_lowlevel.c.

{
    // Setting PINS as 00 (GPIO) in PINSEL0 (bit 6 to 25) for P0.19 to P0.25
    // 0000 0011 1111 1111 1111 1111 1100 0000
    LPC_PINCON->PINSEL1 &= ~(0x03FFFFC0);
 
    // Setting 00 in PINSEL4 (bit 0 to 15) for P2.0 to P2.7
    // 0000 0000 0000 0000 1111 1111 1111 1111
    LPC_PINCON->PINSEL4 &= ~(0x0000FFFF);
 
    /* EN = P0.19 , LE = P0.20 , DIR = P0.21 , CS = P0.22 , RS = P0.23 , RS = P0.23 */
    /* RS = P0.23 , WR = P0.24 , RD = P0.25 , DB[0.7] = P2.0...P2.7 , DB[8.15]= P2.0...P2.7 */
    LPC_GPIO0->FIODIR |= 0x03f80000;
    LPC_GPIO0->FIOSET = 0x03f80000;
 
    s_orientation = orientation;
    if (orientation == LCD_ORIENT_VER || orientation == LCD_ORIENT_VER_INV)
    {
        LCDMaxX = 240;
        LCDMaxY = 320;
    }
    else
    {
        LCDMaxX = 320;
        LCDMaxY = 240;
    }
 
    DELAY_MS(100);
    const u16 code = read_from(0x0000);
    if (code == 0x9325 || code == 0x9328)
    {
        s_model_code = ILI9325;
        write_to(0x00e7, 0x0010); // Test Register
        write_to(0x0000, 0x0001); // Starts internal OSC
        write_to(0x0001, 0x0100); // Output driver control
 
        write_to(0x0002, 0x0700);                                     // LCD Driver Waveform Control
        write_to(0x0003, (1 << 12) | (1 << 5) | (1 << 4) | (0 << 3)); // Entry mode
        write_to(0x0004, 0x0000);                                     // Resizing Function
        write_to(0x0008, 0x0207);                                     // Back and Front porch periods
        write_to(0x0009, 0x0000);                                     // Non-Display Area refresh cycle
        write_to(0x000a, 0x0000);                                     // Frame cycle
        write_to(0x000c, 0x0001);
        write_to(0x000d, 0x0000);
        write_to(0x000f, 0x0000);
 
        // Power Control
        write_to(0x0010, 0x0000);
        write_to(0x0011, 0x0007);
        write_to(0x0012, 0x0000);
        write_to(0x0013, 0x0000);
        DELAY_MS(50);
        write_to(0x0010, 0x1590);
        write_to(0x0011, 0x0227);
        DELAY_MS(50);
        write_to(0x0012, 0x009c);
        DELAY_MS(50);
        write_to(0x0013, 0x1900);
        write_to(0x0029, 0x0023);
 
        write_to(0x002b, 0x000e); // Frate rate & Color control
        DELAY_MS(50);
        write_to(0x0020, 0x0000); // GRAM horizontal Address
        write_to(0x0021, 0x0000); // GRAM Vertical Address
 
        DELAY_MS(50);
        write_to(0x0030, 0x0007);
        write_to(0x0031, 0x0707);
        write_to(0x0032, 0x0006);
        write_to(0x0035, 0x0704);
        write_to(0x0036, 0x1f04);
        write_to(0x0037, 0x0004);
        write_to(0x0038, 0x0000);
        write_to(0x0039, 0x0706);
        write_to(0x003c, 0x0701);
        write_to(0x003d, 0x000f);
        DELAY_MS(50);
        write_to(0x0050, 0x0000);
        write_to(0x0051, 0x00ef);
        write_to(0x0052, 0x0000);
        write_to(0x0053, 0x013f);
        write_to(0x0060, 0xa700);
        write_to(0x0061, 0x0001);
        write_to(0x006a, 0x0000);
        write_to(0x0080, 0x0000);
        write_to(0x0081, 0x0000);
        write_to(0x0082, 0x0000);
        write_to(0x0083, 0x0000);
        write_to(0x0084, 0x0000);
        write_to(0x0085, 0x0000);
        write_to(0x0090, 0x0010);
        write_to(0x0092, 0x0000);
        write_to(0x0093, 0x0003);
        write_to(0x0095, 0x0110);
        write_to(0x0097, 0x0000);
        write_to(0x0098, 0x0000);
 
        // Display On Sequence
        write_to(0x0007, 0x0133);
        write_to(0x0020, 0x0000);
        write_to(0x0021, 0x0000);
    }
 
    DELAY_MS(50);
}

__LCD_LL_SetPointColor()

void __LCD_LL_SetPointColor	(	u16	rgb565,
		u16	x,
		u16	y
	)

Definition at line 368 of file glcd_lowlevel.c.

{
    set_gram_cursor(x, y);
    write_to(0x0022, rgb565 & 0xFFFF);
}