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ugfx/drivers/gdisp/UC1610/gdisp_lld_UC1610.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.io/license.html
*/
#include "gfx.h"
#if GFX_USE_GDISP
#define GDISP_DRIVER_VMT GDISPVMT_UC1610
#include "gdisp_lld_config.h"
#include "../../../src/gdisp/gdisp_driver.h"
#include "board_UC1610.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#include "UC1610.h"
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT UC1610_SCREEN_HEIGHT
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH UC1610_SCREEN_WIDTH
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 40
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
// Some common routines and macros
#define PRIV(g) ((UC1610_Window *)g->priv)
#define RAM(g) ((gU8 *)(PRIV(g) + 1))
#define xyaddr(x, y) ((x) + GDISP_SCREEN_WIDTH * ((y) >> 2))
#define xybit(y, c) ((c) << (((y) & 3) << 1))
#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
typedef struct UC1610_Window {
gCoord x1;
gCoord y1;
gCoord x2;
gCoord y2;
} UC1610_Window;
/*===========================================================================*/
/* Driver local varriables. */
/*===========================================================================*/
static gU8 cmdBuffer[11];
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
static void GFXINLINE power_on_sequence(GDisplay* g) {
cmdBuffer[0] = UC1610_SYSTEM_RESET; // software reset
write_cmd(g, cmdBuffer, 1);
gfxSleepMilliseconds(2);
cmdBuffer[0] = UC1610_SET_COM_END; // set com end value
cmdBuffer[1] = GDISP_SCREEN_HEIGHT - 1;
cmdBuffer[2] = UC1610_SET_PANEL_LOADING;
cmdBuffer[3] = UC1610_SET_LCD_BIAS_RATIO;
cmdBuffer[4] = UC1610_SET_VBIAS_POT; // set contrast
cmdBuffer[5] = (gU8) (GDISP_INITIAL_CONTRAST * 254 / 100);
cmdBuffer[6] = UC1610_SET_MAPPING_CONTROL; // bottom view
cmdBuffer[7] = UC1610_SET_SCROLL_LINES_LSB | 0;
cmdBuffer[8] = UC1610_SET_SCROLL_LINES_MSB | 0; // set scroll line on line 0
cmdBuffer[9] = UC1610_SET_AC | UC1610_AC_WA_MASK; // set auto increment wrap arround
cmdBuffer[10] = UC1610_SET_DISPLAY_ENABLE | 1; // turn display on
write_cmd(g, cmdBuffer, 11);
}
static void GFXINLINE flush_screen(GDisplay* g) {
PRIV(g)->x1 = 0;
PRIV(g)->y1 = 0;
PRIV(g)->x2 = GDISP_SCREEN_WIDTH-1;
PRIV(g)->y2 = GDISP_SCREEN_HEIGHT-1;
g->flags |= GDISP_FLG_NEEDFLUSH;
gdisp_lld_flush(g);
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC gBool gdisp_lld_init(GDisplay *g) {
// The private area is the display surface + flush window structure.
g->priv = gfxAlloc(sizeof(UC1610_Window) + GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / UC1610_PAGE_HEIGHT);
// Clear the initial flush region
PRIV(g)->x1 = GDISP_SCREEN_WIDTH;
PRIV(g)->y1 = GDISP_SCREEN_HEIGHT;
PRIV(g)->x2 = -1;
PRIV(g)->y2 = -1;
// Initialise the board interface
init_board(g);
// Hardware reset
// not needed : reset pin set to ON by init_board(g), software reset by power_on_sequence(g)
gfxSleepMilliseconds(12);
// Acquire the bus
acquire_bus(g);
// Init commands sequence
power_on_sequence(g);
// Finish Init
post_init_board(g);
// Release the bus
release_bus(g);
/* Initialise the GDISP structure */
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Orientation = gOrientation0;
g->g.Powermode = gPowerOn;
g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
g->g.Contrast = GDISP_INITIAL_CONTRAST;
return gTrue;
}
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
gCoord x, y;
gU8 *c;
// handle orientation
switch (g->g.Orientation) {
default :
x = g->p.x;
y = g->p.y;
break;
case gOrientation90 :
y = g->p.x;
x = g->p.y;
break;
case gOrientation270 :
y = g->p.x;
x = g->p.y;
break;
}
// update pixel color
c = RAM(g) + xyaddr(x, y);
*c &= ~xybit(y, LLDCOLOR_MASK());
*c |= xybit(y, gdispColor2Native(g->p.color));
// update flush window boundaries
if (x < PRIV(g)->x1) { PRIV(g)->x1 = x; }
if (x > PRIV(g)->x2) { PRIV(g)->x2 = x; }
if (y < PRIV(g)->y1) { PRIV(g)->y1 = y; }
if (y > PRIV(g)->y2) { PRIV(g)->y2 = y; }
g->flags |= GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_HARDWARE_FLUSH
LLDSPEC void gdisp_lld_flush(GDisplay* g)
{
gCoord x1, y1, x2, y2, cx;
gU8 *c;
// Don't flush unless we really need to
if (!(g->flags & GDISP_FLG_NEEDFLUSH))
return;
x1 = PRIV(g)->x1;
y1 = PRIV(g)->y1;
x2 = PRIV(g)->x2;
y2 = PRIV(g)->y2;
cx = x2 - x1 + 1;
// Clear the 'need-flushing' flag and reset the window
g->flags &= ~GDISP_FLG_NEEDFLUSH;
PRIV(g)->x1 = GDISP_SCREEN_WIDTH;
PRIV(g)->y1 = GDISP_SCREEN_HEIGHT;
PRIV(g)->x2 = -1;
PRIV(g)->y2 = -1;
// set window to fill
cmdBuffer[0] = UC1610_SET_WINDOW_PROGRAM_ENABLE | 0; // before changing boundaries
cmdBuffer[1] = UC1610_SET_WP_STARTING_CA;
cmdBuffer[2] = x1;
cmdBuffer[3] = UC1610_SET_WP_ENDING_CA;
cmdBuffer[4] = x2;
cmdBuffer[5] = UC1610_SET_WP_STARTING_PA;
cmdBuffer[6] = y1 >> 2;
cmdBuffer[7] = UC1610_SET_WP_ENDING_PA;
cmdBuffer[8] = y2 >> 2;
cmdBuffer[9] = UC1610_SET_WINDOW_PROGRAM_ENABLE | 1; // entering window programming
acquire_bus(g);
write_cmd (g, cmdBuffer, 10);
// write each page segment from RAM(g) to display RAM
for (c = RAM(g) + xyaddr(x1, y1) ; y1 <= y2 ; c += GDISP_SCREEN_WIDTH, y1 += UC1610_PAGE_HEIGHT) {
write_data(g, c, cx);
}
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 == (gPowermode)g->p.ptr) { return; }
switch((gPowermode)g->p.ptr) {
case gPowerOff:
cmdBuffer[0] = UC1610_SYSTEM_RESET;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
gfxSleepMilliseconds(2);
break;
case gPowerSleep:
cmdBuffer[0] = UC1610_SET_DISPLAY_ENABLE | 0;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
gfxSleepMilliseconds(2);
break;
case gPowerOn:
if (g->g.Powermode == gPowerSleep) {
cmdBuffer[0] = UC1610_SET_DISPLAY_ENABLE | 1;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
flush_screen(g);
} else {
gfxSleepMilliseconds(12);
acquire_bus(g);
power_on_sequence(g);
release_bus(g);
}
break;
default:
return;
}
g->g.Powermode = (gPowermode)g->p.ptr;
return;
case GDISP_CONTROL_ORIENTATION:
if (g->g.Orientation == (gOrientation)g->p.ptr) { return; }
switch((gOrientation)g->p.ptr) {
case gOrientation0:
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
cmdBuffer[0] = UC1610_SET_MAPPING_CONTROL;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
flush_screen(g);
break;
case gOrientation180: // we can rotate 180° without modify screen buffer RAM(g)
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
cmdBuffer[0] = UC1610_SET_MAPPING_CONTROL | UC1610_SET_MAPPING_CONTROL_MY_MASK | UC1610_SET_MAPPING_CONTROL_MX_MASK;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
flush_screen(g);
break;
case gOrientation90: // needs clearing screen and updating RAM(g)
g->g.Width = GDISP_SCREEN_HEIGHT;
g->g.Height = GDISP_SCREEN_WIDTH;
cmdBuffer[0] = UC1610_SET_MAPPING_CONTROL | UC1610_SET_MAPPING_CONTROL_MX_MASK;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
break;
case gOrientation270: // needs clearing screen and updating RAM(g)
g->g.Width = GDISP_SCREEN_HEIGHT;
g->g.Height = GDISP_SCREEN_WIDTH;
cmdBuffer[0] = UC1610_SET_MAPPING_CONTROL | UC1610_SET_MAPPING_CONTROL_MY_MASK;
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
break;
default:
return;
}
g->g.Orientation = (gOrientation)g->p.ptr;
return;
case GDISP_CONTROL_BACKLIGHT:
// TODO: backlight support at board level
/*if ((unsigned)g->p.ptr > 100) { g->p.ptr = (void *)100; }
set_backlight(g, (unsigned)g->p.ptr);
g->g.Backlight = (unsigned)g->p.ptr;*/
return;
case GDISP_CONTROL_CONTRAST:
if ((unsigned)g->p.ptr > 100) { g->p.ptr = (void *)100; }
acquire_bus(g);
cmdBuffer[0] = UC1610_SET_VBIAS_POT;
cmdBuffer[1] = (gU8)((unsigned)g->p.ptr * 254 / 100);
write_cmd(g, cmdBuffer, 2);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
flush_screen(g);
return;
case GDISP_CONTROL_INVERSE:
cmdBuffer[0] = g->p.ptr ? (UC1610_SET_INVERSE_DISPLAY | 1) : (UC1610_SET_INVERSE_DISPLAY | 0);
acquire_bus(g);
write_cmd(g, cmdBuffer, 1);
release_bus(g);
//flush_screen(g);
return;
}
}
#endif
#endif // GFX_USE_GDISP
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