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ugfx/drivers/gdisp/SSD1963/gdisp_lld_SSD1963.c

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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
#define GDISP_DRIVER_VMT GDISPVMT_SSD1963
#include "drivers/gdisp/SSD1963/gdisp_lld_config.h"
#include "src/gdisp/gdisp_driver.h"
#define CALC_PERIOD(w,b,f,p) (p+b+w+f)
#define CALC_FPR(w,h,hb,hf,hp,vb,vf,vp,fps) ((fps * CALC_PERIOD(w,hb,hf,hp) * CALC_PERIOD(h,vb,vf,vp) * 1048576)/100000000)
typedef struct LCD_Parameters {
coord_t width, height; // Panel width and height
uint16_t hbporch; // Horizontal Back Porch
uint16_t hfporch; // Horizontal Front Porch
uint16_t hpulse; // Horizontal Pulse
uint16_t hperiod; // Horizontal Period (Total)
uint16_t vbporch; // Vertical Back Porch
uint16_t vfporch; // Vertical Front Porch
uint16_t vpulse; // Vertical Pulse
uint16_t vperiod; // Vertical Period (Total)
uint32_t fpr; // Calculated FPR
uint16_t mode; // For command "SSD1963_SET_LCD_MODE"
/* Set the pannel data width */
#define LCD_PANEL_DATA_WIDTH_24BIT (1<<5) // 18bit default
/* Set the color deeph enhancement */
#define LCD_PANEL_ENABLE_FRC ((1<<3) | (1<<4))
#define LCD_PANEL_ENABLE_DITHERING (1<<4) // no enhancement default
/* Set the dot clock pulse polarity */
#define LCD_PANEL_LSHIFT_FALLING_EDGE (1<<2) // default rising edge
/* Set the horizontal sync pulse polarity */
#define LCD_PANEL_LLINE_ACTIVE_HIGH (1<<1) // default active low
/* Set the vertical sync pulse polarity */
#define LCD_PANEL_LFRAME_ACTIVE_HIGH (1<0) // default active low
/* Set the lcd panel mode */
#define LCD_PANEL_MODE_TTL ((1<<7) << 8) // default mode is Hsync+Vsync +DE
/* Set the lcd panel interface type */ // default TFT mode
#define LCD_PANEL_TYPE_SERIAL_RGB_MODE ((1<<6) << 8) // Serial RGB mode
#define LCD_PANEL_TYPE_SERIAL_RGB_DUMMY_MODE (((1<<5) | (1<<6)) << 8) // Serial RGB+dummy mode
bool_t flipHorz; // Flipping the display horizontally
bool_t flipVert; // Flipping the display vertically
} LCD_Parameters;
#include "board_SSD1963.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SSD1963_NO_INIT
#define GDISP_SSD1963_NO_INIT FALSE
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 50
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
#include "drivers/gdisp/SSD1963/ssd1963.h"
#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_data16(g, data) { write_data(g, (data)>>8); write_data(g, (data) & 0xFF); }
#define read_reg(g, reg) { write_index(g, reg); read_data(g); }
static inline void set_viewport(GDisplay* g) {
switch(g->g.Orientation) {
default:
case GDISP_ROTATE_0:
write_index(g, SSD1963_SET_COLUMN_ADDRESS);
write_data16(g, g->p.x);
write_data16(g, g->p.x+g->p.cx-1);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, g->p.y);
write_data16(g, g->p.y+g->p.cy-1);
write_index(g, SSD1963_WRITE_MEMORY_START);
break;
case GDISP_ROTATE_90:
write_index(g, SSD1963_SET_COLUMN_ADDRESS);
write_data16(g, g->p.y);
write_data16(g, g->p.y+g->p.cy-1);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, g->g.Width - g->p.x - g->p.cx);
write_data16(g, g->g.Width-1 - g->p.x);
write_index(g, SSD1963_WRITE_MEMORY_START);
break;
case GDISP_ROTATE_180:
write_index(g, SSD1963_SET_COLUMN_ADDRESS);
write_data16(g, g->g.Width - g->p.x - g->p.cx);
write_data16(g, g->g.Width-1 - g->p.x);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, g->g.Height - g->p.y - g->p.cy);
write_data16(g, g->g.Height-1 - g->p.y);
write_index(g, SSD1963_WRITE_MEMORY_START);
break;
case GDISP_ROTATE_270:
write_index(g, SSD1963_SET_COLUMN_ADDRESS);
write_data16(g, g->g.Height - g->p.y - g->p.cy);
write_data16(g, g->g.Height-1 - g->p.y);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, g->p.x);
write_data16(g, g->p.x+g->p.cx-1);
write_index(g, SSD1963_WRITE_MEMORY_START);
break;
}
}
/**
* The backlight is controlled by the controller.
* percent - the value 0..100 for brightness (duty cycle)
*
* Backlight appears to be forced off (by chip) when display blanked
*/
static inline void set_backlight(GDisplay *g, uint8_t percent) {
// The SSD1963 has a built-in PWM (duty_cycle 00..FF).
// Its output can be used by a Dynamic Background Control or by a host (user)
// Check your LCD's hardware, the PWM connection is default left open and instead
// connected to a LED connection on the breakout board
write_index(g, SSD1963_SET_PWM_CONF); //set PWM for BackLight
write_data(g, 0x06);
// write_data(g, 0x0E); // PWMF[7:0] = 2, PWM base freq = PLL/(256*(1+5))/256 = 300Hz for a PLL freq = 120MHz (source: Displaytech)
if (percent == 0xFF) // use percent==0xFF to turn off SSD1963 pwm in power SLEEP or DEEP SLEEP mode
write_data(g, 0x00);
else if (percent >= 100)
write_data(g, 0xFF); // Fully on for any percentage >= 100
else
write_data(g, (percent*255)/100 & 0x00FF);
write_data(g, 0x01); // Controlled by host (not DBC), enabled
write_data(g, 0xFF); // DBC manual brightness (not used - zero would work)
write_data(g, 0x00); // DBC minimum brightness
write_data(g, 0x01); // Brightness prescaler - active when Transition Effect enable A5 = 1
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
LCD_Parameters * lcdp;
/*
* Some displays (e.g. Displaytech) have an on-board setup process which just requires that we don't touch anything for a time after power up.
* For this type of display define GDISP_SSD1963_NO_INIT as TRUE, and implement an appropriate delay in the board file.
* With such displays we can skip most of the initialisation. We also skip pulsing the reset pin, since it
* will introduce an extra second or so of display to the startup time.
*/
// The private area for this controller is the LCD timings
lcdp = (void *)&DisplayTimings[g->controllerdisplay];
g->priv = lcdp;
// Initialise the board interface
init_board(g);
#if !GDISP_SSD1963_NO_INIT
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(200);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(200);
#endif
// Get the bus for the following initialisation commands
acquire_bus(g);
#if !GDISP_SSD1963_NO_INIT
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
gfxSleepMilliseconds(50);
/* Driver PLL config */
write_index(g, SSD1963_SET_PLL_MN);
write_data(g, 35); // PLLclk = REFclk (10Mhz) * 36 (360Mhz)
write_data(g, 2); // SYSclk = PLLclk / 3 (120MHz)
write_data(g, 54); // Apply calculation bit, else it is ignored
write_reg(g, SSD1963_SET_PLL, 0x01); // Enable PLL
gfxSleepMilliseconds(100);
write_reg(g, SSD1963_SET_PLL, 0x03); // Use PLL
/* LCD panel parameters */
write_index(g, SSD1963_SET_LCD_MODE);
write_data(g, lcdp->mode & 0xFF);
write_data(g, (lcdp->mode >> 8) & 0xFF);
//** write_data(g, 0x18); //Enabled dithering
//** write_data(g, 0x00);
write_data16(g, lcdp->width-1);
write_data16(g, lcdp->height-1);
write_data(g, 0x00); // RGB - line sequences for serial TFT
#endif
// Display flipping
if (lcdp->flipHorz) {
write_reg(g, SSD1963_SET_ADDRESS_MODE, SSD1963_ADDR_MODE_FLIP_HORZ);
} else if (lcdp->flipVert) {
write_reg(g, SSD1963_SET_ADDRESS_MODE, SSD1963_ADDR_MODE_FLIP_VERT);
} else if (lcdp->flipHorz && lcdp->flipVert) {
write_reg(g, SSD1963_SET_ADDRESS_MODE, SSD1963_ADDR_MODE_FLIP_VERT | SSD1963_ADDR_MODE_FLIP_HORZ);
} else {
write_reg(g, SSD1963_SET_ADDRESS_MODE, 0x00);
}
write_reg(g, SSD1963_SET_PIXEL_DATA_INTERFACE, SSD1963_PDI_16BIT565);
write_reg(g, SSD1963_SET_PIXEL_FORMAT, 0x50);
#if !GDISP_SSD1963_NO_INIT
/* LCD Clock specs */
write_index(g, SSD1963_SET_LSHIFT_FREQ);
write_data(g, (lcdp->fpr >> 16) & 0xFF);
write_data(g, (lcdp->fpr >> 8) & 0xFF);
write_data(g, lcdp->fpr & 0xFF);
write_index(g, SSD1963_SET_HORI_PERIOD);
write_data16(g, lcdp->hperiod);
write_data16(g, lcdp->hpulse + lcdp->hbporch);
write_data(g, lcdp->hpulse - 1);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0x00);
write_index(g, SSD1963_SET_VERT_PERIOD);
write_data16(g, lcdp->vperiod);
write_data16(g, lcdp->vpulse + lcdp->vbporch);
write_data(g, lcdp->vpulse - 1);
write_data(g, 0x00);
write_data(g, 0x00);
#if 0
/* Enable DBC to control Backlight */
write_index(g, SSD1963_SET_DBC_CONF);
write_data(g, 0x2F);
#endif
#endif
#if 0
/* Tear effect indicator ON. This is used to tell the host MCU when the driver is not refreshing the panel (during front/back porch) */
write_reg(g, SSD1963_SET_TEAR_ON, 0x00);
#endif
/* Turn on */
write_index(g, SSD1963_SET_DISPLAY_ON);
/* Turn on the back-light */
set_backlight(g, GDISP_INITIAL_BACKLIGHT);
// Finish Init
post_init_board(g);
// Release the bus
release_bus(g);
/* Initialise the GDISP structure */
g->g.Width = lcdp->width;
g->g.Height = lcdp->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_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_index(g, SSD1963_EXIT_SLEEP_MODE);
gfxSleepMilliseconds(5);
write_index(g, SSD1963_SET_DISPLAY_OFF);
write_index(g, SSD1963_SET_DEEP_SLEEP);
release_bus(g);
break;
case powerOn:
acquire_bus(g);
setreadmode(g);
dummy_read(g);
dummy_read(g);
setwritemode(g);
gfxSleepMilliseconds(100); // Wait for 1msec to let the PLL stable if was stopped by deep sleep mode
write_index(g, SSD1963_EXIT_SLEEP_MODE); // need this in case we were in 'normal' sleep mode
gfxSleepMilliseconds(5);
set_backlight(g, gdispGGetBacklight(g)); // Restore the back-light
release_bus(g);
break;
case powerSleep:
acquire_bus(g);
set_backlight(g, 0xFF); // Turn off the back-light pwm from SSD1963
write_index(g, SSD1963_ENTER_SLEEP_MODE);
gfxSleepMilliseconds(5);
release_bus(g);
break;
case powerDeepSleep:
acquire_bus(g);
set_backlight(g, 0xFF); // Turn off the back-light pwm from SSD1963
write_index(g, SSD1963_ENTER_SLEEP_MODE);
write_index(g, SSD1963_SET_DEEP_SLEEP);
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_index(g, SSD1963_SET_ADDRESS_MODE);
write_data(g, 0x00);
release_bus(g);
g->g.Height = ((LCD_Parameters *)g->priv)->height;
g->g.Width = ((LCD_Parameters *)g->priv)->width;
break;
case GDISP_ROTATE_90:
acquire_bus(g);
write_index(g, SSD1963_SET_ADDRESS_MODE);
write_data(g, SSD1963_ADDR_MODE_PAGE_ADDR_ORDER | SSD1963_ADDR_MODE_PAG_COL_ADDR_ORDER );
release_bus(g);
g->g.Height = ((LCD_Parameters *)g->priv)->width;
g->g.Width = ((LCD_Parameters *)g->priv)->height;
break;
case GDISP_ROTATE_180:
acquire_bus(g);
write_index(g, SSD1963_SET_ADDRESS_MODE);
write_data(g, SSD1963_ADDR_MODE_PAGE_ADDR_ORDER | SSD1963_ADDR_MODE_COL_ADDR_ORDER);
release_bus(g);
g->g.Height = ((LCD_Parameters *)g->priv)->height;
g->g.Width = ((LCD_Parameters *)g->priv)->width;
break;
case GDISP_ROTATE_270:
acquire_bus(g);
write_index(g, SSD1963_SET_ADDRESS_MODE);
write_data(g, SSD1963_ADDR_MODE_COL_ADDR_ORDER | SSD1963_ADDR_MODE_PAG_COL_ADDR_ORDER );
release_bus(g);
g->g.Height = ((LCD_Parameters *)g->priv)->width;
g->g.Width = ((LCD_Parameters *)g->priv)->height;
break;
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
return;
case GDISP_CONTROL_BACKLIGHT:
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
acquire_bus(g);
set_backlight(g, (unsigned)g->p.ptr);
release_bus(g);
g->g.Backlight = (unsigned)g->p.ptr;
return;
//case GDISP_CONTROL_CONTRAST: - see DDS1963_SET_POST_PROC command - contrast, brightness, saturation
default:
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
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