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ugfx/drivers/gdisp/ILI9481/gdisp_lld_ILI9481.c
Joel Bodenmann 25802124fb Fix in ILI9481 driver code
2016-03-29 12:17:29 +02:00

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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#include "gfx.h"
#if GFX_USE_GDISP
#if defined(GDISP_SCREEN_HEIGHT)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GISP_SCREEN_HEIGHT
#endif
#if defined(GDISP_SCREEN_WIDTH)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GDISP_SCREEN_WIDTH
#endif
#define GDISP_DRIVER_VMT GDISPVMT_ILI9481
#include "gdisp_lld_config.h"
#include "../../../src/gdisp/gdisp_driver.h"
#include "board_ILI9481.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 480
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 320
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 50
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
// Some common routines and macros
#define dummy_read(g) { volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
#define write_reg(g, reg, data) { write_index(g, reg); write_data(g, data); }
#define write_reg2x16(g, reg, data1, data2) { write_index(g, reg); write_data(g, (data1)>>8); write_data(g, (uint8_t)(data1)); write_data(g, (data2)>>8); write_data(g, (uint8_t)(data2));}
static void set_viewport(GDisplay* g) {
write_reg2x16(g, 0x2A, g->p.x, g->p.x + g->p.cx - 1);
write_reg2x16(g, 0x2B, g->p.y, g->p.y + g->p.cy - 1);
write_index(g, 0x2C);
}
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// No private area for this controller
g->priv = 0;
// Initialise the board interface
init_board(g);
/* Hardware reset */
setpin_reset(g, TRUE);
gfxSleepMilliseconds(20);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(20);
/* Get the bus for the following initialisation commands */
acquire_bus(g);
/* Enable Access to all Manufacturer commands (0xB0 and higher opcodes) */
write_reg(g, 0xB0, 0x00);
/* Frame Memory Access and Interface Setting */
write_index(g, 0xB3);
write_data(g, 0x02);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0x10);
/* Display Mode and Frame Memory Write Mode Setting (B4h) */
/* Use internal clock for synchronization */
/* Use DBI interface (only DB0-17, no HSYNC, VSYNC or CLK) */
write_reg(g, 0xB4, 0x00);
/* Internal Backlight Control */
/* write_index(g, 0xB9); // PWM Settings for Brightness Control
write_data(g, 0x01); // Disabled by default.
write_data(g, 0xFF); // 0xFF = Max brightness
write_data(g, 0xFF);
write_data(g, 0x18); */
/* Panel Driving settings */
write_index(g, 0xC0);
write_data(g, 0x03);
write_data(g, 0x3B);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0x01);
write_data(g, 0x00); /* NW */
write_data(g, 0x43);
/* Display timings in Operating Mode */
write_index(g, 0xC1);
write_data(g, 0x08);
write_data(g, 0x15); /* CLOCK */
write_data(g, 0x08);
write_data(g, 0x08);
/* S/VCOM/Gate Driving timing setting */
write_index(g, 0xC4);
write_data(g, 0x15);
write_data(g, 0x03);
write_data(g, 0x03);
write_data(g, 0x01);
/* Interface Setting */
write_reg(g, 0xC6, 0x02);
/* Gamma Setting - should be changed if using a different panel */
write_index(g, 0xC8);
write_data(g, 0x0C);
write_data(g, 0x05);
write_data(g, 0x0A); /*0X12 */
write_data(g, 0x6B); /*0x7D */
write_data(g, 0x04);
write_data(g, 0x06); /*0x08 */
write_data(g, 0x15); /*0x0A */
write_data(g, 0x10);
write_data(g, 0x00);
write_data(g, 0x60); /*0x23 */
/* Address Mode setting */
write_reg(g, 0x36, 0x00);
/* Set Pixel Format = 16 bits per pixel */
/* The driver supports upto 24 bits per pixel, with dither */
write_reg(g, 0x3A, 0x55);
/* Exit Idle Mode */
write_index(g, 0x38);
/* Power Setting */
write_index(g, 0xD0);
write_data(g, 0x07);
write_data(g, 0x07); /* VCI = VCI1 */
write_data(g, 0x14); /* VRH 0x1D */
write_data(g, 0xA2); /* BT 0x06 */
/* VCOM Setting */
write_index(g, 0xD1);
write_data(g, 0x03);
write_data(g, 0x5A); /* VCM 0x5A */
write_data(g, 0x10); /* VDV */
/* Power Setting for Normal Mode */
write_index(g, 0xD2);
write_data(g, 0x03);
write_data(g, 0x04); /* 0x24 */
write_data(g, 0x04);
/* Exit Sleep Mode */
write_index(g, 0x11);
gfxSleepMilliseconds(150);
/* Display ON */
write_index(g, 0x29);
gfxSleepMilliseconds(30);
// Finish Init
post_init_board(g);
// Release the bus
release_bus(g);
/* Turn on the back-light */
set_backlight(g, GDISP_INITIAL_BACKLIGHT);
/* Initialise the GDISP structure */
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Orientation = GDISP_ROTATE_0;
g->g.Powermode = powerOn;
g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
g->g.Contrast = GDISP_INITIAL_CONTRAST;
return TRUE;
}
#if GDISP_HARDWARE_STREAM_WRITE
LLDSPEC void gdisp_lld_write_start(GDisplay *g) {
acquire_bus(g);
set_viewport(g);
}
LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
write_data(g, gdispColor2Native(g->p.color));
}
LLDSPEC void gdisp_lld_write_stop(GDisplay *g) {
release_bus(g);
}
#endif
#if GDISP_HARDWARE_STREAM_READ
LLDSPEC void gdisp_lld_read_start(GDisplay *g) {
acquire_bus(g);
set_viewport(g);
setreadmode(g);
dummy_read(g);
}
LLDSPEC color_t gdisp_lld_read_color(GDisplay *g) {
uint16_t data;
data = read_data(g);
return gdispNative2Color(data);
}
LLDSPEC void gdisp_lld_read_stop(GDisplay *g) {
setwritemode(g);
release_bus(g);
}
#endif
#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
LLDSPEC void gdisp_lld_control(GDisplay *g) {
switch(g->p.x) {
case GDISP_CONTROL_POWER:
if (g->g.Powermode == (powermode_t)g->p.ptr)
return;
switch((powermode_t)g->p.ptr) {
case powerOff:
acquire_bus(g);
write_reg(g, 0x0010, 0x0001); /* enter sleep mode */
release_bus(g);
break;
case powerOn:
acquire_bus(g);
write_reg(g, 0x0010, 0x0000); /* leave sleep mode */
release_bus(g);
if (g->g.Powermode != powerSleep)
gdisp_lld_init(g);
break;
case powerSleep:
acquire_bus(g);
write_reg(g, 0x0010, 0x0001); /* enter sleep mode */
release_bus(g);
break;
default:
return;
}
g->g.Powermode = (powermode_t)g->p.ptr;
return;
case GDISP_CONTROL_ORIENTATION:
if (g->g.Orientation == (orientation_t)g->p.ptr)
return;
switch((orientation_t)g->p.ptr) {
case GDISP_ROTATE_0:
acquire_bus(g);
write_reg(g, 0xC0, 0x03);
write_reg(g, 0x36, 0x00); /* X and Y axes non-inverted */
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
acquire_bus(g);
write_reg(g, 0xC0, 0x02);
write_reg(g, 0x36, 0x20); /* Invert X and Y axes */
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
acquire_bus(g);
write_reg(g, 0xC0, 0x06);
write_reg(g, 0x36, 0x00); /* X and Y axes non-inverted */
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
acquire_bus(g);
write_reg(g, 0xC0, 0x07);
write_reg(g, 0x36, 0x20); /* Invert X and Y axes */
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
return;
//case GDISP_CONTROL_BACKLIGHT:
//case GDISP_CONTROL_CONTRAST:
default:
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
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