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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_PCF8812
#include "drivers/gdisp/PCF8812/gdisp_lld_config.h"
#include "src/gdisp/driver.h"
#include "board_PCF8812.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 65
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 102
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 51
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
#include "drivers/gdisp/PCF8812/PCF8812.h"
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
// Some common routines and macros
#define RAM(g) ((uint8_t *)g->priv)
#define xyaddr(x, y) ((x) + ((y)>>3)*GDISP_SCREEN_WIDTH)
#define xybit(y) (1<<((y)&7))
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/*
* As this controller can't update on a pixel boundary we need to maintain the
* the entire display surface in memory so that we can do the necessary bit
* operations. Fortunately it is a small display in monochrome.
* 65 * 102 / 8 = 829 bytes.
*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// The private area is the display surface.
g->priv = gfxAlloc((GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8));
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(100);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(100);
acquire_bus(g);
write_cmd(g, PCF8812_SET_FUNC | PCF8812_H);
write_cmd(g, PCF8812_TEMP_CONTROL | PCF8812_TEMP_MODE_1);
write_cmd(g, PCF8812_SET_VMULT | PCF8812_VMULT_MODE_1);
write_cmd(g, PCF8812_SET_VOP | 0xFF);
write_cmd(g, PCF8812_SET_FUNC);
write_cmd(g, PCF8812_DISPLAY | PCF8812_DISPLAY_MODE_NORMAL);
unsigned int i;
for (i = 0; i < (GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8); ++i)
{
RAM(g)[i] &= 0x00;
write_data(g, (uint8_t*)0x00, 1);
}
// 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 = GDISP_ROTATE_0;
g->g.Powermode = powerOn;
g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
g->g.Contrast = GDISP_INITIAL_CONTRAST;
return TRUE;
}
#if GDISP_HARDWARE_FLUSH
LLDSPEC void gdisp_lld_flush(GDisplay *g) {
// Don't flush if we don't need it.
if (!(g->flags & GDISP_FLG_NEEDFLUSH))
return;
unsigned int i;
acquire_bus(g);
for (i = 0; i < (GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8); i += GDISP_SCREEN_WIDTH) {
write_data(g, RAM(g) + i, GDISP_SCREEN_WIDTH);
}
release_bus(g);
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
coord_t x, y;
switch(g->g.Orientation) {
default:
case GDISP_ROTATE_0:
x = g->p.x;
y = g->p.y;
break;
case GDISP_ROTATE_90:
x = g->p.y;
y = GDISP_SCREEN_HEIGHT-1 - g->p.x;
break;
case GDISP_ROTATE_180:
x = GDISP_SCREEN_WIDTH-1 - g->p.x;
y = GDISP_SCREEN_HEIGHT-1 - g->p.y;
break;
case GDISP_ROTATE_270:
x = GDISP_SCREEN_HEIGHT-1 - g->p.y;
y = g->p.x;
break;
}
if (gdispColor2Native(g->p.color) == Black)
RAM(g)[xyaddr(x, y)] |= xybit(y);
else
RAM(g)[xyaddr(x, y)] &= ~xybit(y);
g->flags |= GDISP_FLG_NEEDFLUSH;
}
#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:
case powerSleep:
case powerDeepSleep:
acquire_bus(g);
write_cmd(g, PCF8812_DISPLAY_OFF);
release_bus(g);
break;
case powerOn:
acquire_bus(g);
write_cmd(g, PCF8812_DISPLAY_ON);
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) {
/* Rotation is handled by the drawing routines */
case GDISP_ROTATE_0:
case GDISP_ROTATE_180:
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
case GDISP_ROTATE_270:
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_CONTRAST:
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
acquire_bus(g);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
return;
}
}
#endif // GDISP_NEED_CONTROL
#endif // GFX_USE_GDISP
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