ugfx/drivers/gdisp/PCF8812/gdisp_lld_PCF8812.c

231 lines
5.9 KiB
C
Raw Normal View History

2014-06-12 08:05:53 +00:00
/*
* 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
2014-07-03 15:13:49 +00:00
#define GDISP_DRIVER_VMT GDISPVMT_PCF8812
2014-06-12 08:05:53 +00:00
#include "drivers/gdisp/PCF8812/gdisp_lld_config.h"
#include "src/gdisp/driver.h"
#include "board_PCF8812.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#define GDISP_MATRIX_HEIGHT 72
#define GDISP_MATRIX_WIDTH 102
#define GDISP_SCREEN_HEIGHT 65
#define GDISP_SCREEN_WIDTH 96
2014-07-09 20:57:57 +00:00
#define GDISP_INITIAL_CONTRAST 51
#define GDISP_INITIAL_BACKLIGHT 100
2014-06-12 08:05:53 +00:00
2014-07-09 20:57:57 +00:00
#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
2014-06-12 08:05:53 +00:00
#include "drivers/gdisp/PCF8812/PCF8812.h"
/*===========================================================================*/
2014-07-09 20:57:57 +00:00
/* Driver local routines. */
2014-06-12 08:05:53 +00:00
/*===========================================================================*/
// Some common routines and macros
2014-07-09 20:57:57 +00:00
#define RAM(g) ((uint8_t *)g->priv)
2014-07-09 20:57:57 +00:00
#define xyaddr(x, y) ((x) + ((y) >> 3) * GDISP_MATRIX_WIDTH)
#define xybit(y) (1 << ((y) & 7))
2014-06-12 08:05:53 +00:00
/*===========================================================================*/
/* 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.
* Matrix 102 * 65 / 8 = 828,75 bytes.
* Display 96 * 65 / 8 = 780
2014-06-12 08:05:53 +00:00
*/
2014-07-06 16:29:50 +00:00
//#define GDISP_SCREEN_BYTES ((GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT) / 8)
#define GDISP_MATRIX_BYTES ((GDISP_MATRIX_WIDTH * GDISP_MATRIX_HEIGHT) / 8) // real height 65 pixels, this fix 65 / 8 != 9
2014-06-12 08:05:53 +00:00
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// The private area is the display surface.
if (!(g->priv = gfxAlloc(GDISP_MATRIX_BYTES)))
gfxHalt("GDISP PCF8812: Failed to allocate private memory");
2014-06-12 08:05:53 +00:00
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(100);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(100);
acquire_bus(g);
2014-07-09 18:25:02 +00:00
write_cmd(g, PCF8812_SET_FUNC | PCF8812_H);
write_cmd(g, PCF8812_SET_TEMP | PCF8812_TEMP_MODE_2);
write_cmd(g, PCF8812_SET_BIAS | PCF8812_BIAS_MODE_4);
write_cmd(g, PCF8812_SET_VOP | (0x40));
write_cmd(g, PCF8812_SET_FUNC);
write_cmd(g, PCF8812_SET_DISPLAY | PCF8812_DISPLAY_MODE_NORMAL);
write_cmd(g, PCF8812_SET_X); // X = 0
write_cmd(g, PCF8812_SET_Y); // Y = 0
2014-06-12 08:05:53 +00:00
2014-07-03 15:13:49 +00:00
2014-07-12 07:55:42 +00:00
write_data(g, 0x00, GDISP_MATRIX_BYTES);
2014-06-12 08:05:53 +00:00
2014-07-02 12:05:12 +00:00
// Finish Init
post_init_board(g);
2014-06-12 08:05:53 +00:00
// Release the bus
release_bus(g);
2014-07-03 15:13:49 +00:00
/* Turn on the back-light */
set_backlight(g, GDISP_INITIAL_BACKLIGHT);
2014-06-12 08:05:53 +00:00
/* 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.
2014-07-02 21:19:39 +00:00
if (!(g->flags & GDISP_FLG_NEEDFLUSH)) {
2014-06-12 08:05:53 +00:00
return;
2014-07-02 21:19:39 +00:00
}
2014-06-12 08:05:53 +00:00
acquire_bus(g);
2014-06-18 18:43:14 +00:00
2014-07-09 18:25:02 +00:00
write_cmd(g, PCF8812_SET_X | 0); // X = 0
write_cmd(g, PCF8812_SET_Y | 0); // Y = 0
2014-07-02 12:05:12 +00:00
2014-07-12 07:55:42 +00:00
write_data(g, RAM(g), GDISP_MATRIX_BYTES);
2014-07-02 21:19:39 +00:00
2014-06-12 08:05:53 +00:00
release_bus(g);
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
2014-07-03 15:13:49 +00:00
coord_t x, y;
#if GDISP_NEED_CONTROL
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;
2014-07-09 18:25:02 +00:00
y = g->g.Width - g->p.x - 1;
break;
case GDISP_ROTATE_180:
2014-07-06 16:29:50 +00:00
x = g->g.Width - g->p.x - 1;
y = g->g.Height - g->p.y - 1;
break;
case GDISP_ROTATE_270:
2014-07-06 16:29:50 +00:00
x = g->g.Height - g->p.y - 1;
y = g->p.x;
break;
}
#else
2014-06-12 08:05:53 +00:00
x = g->p.x;
y = g->p.y;
#endif
2014-07-02 21:19:39 +00:00
if (gdispColor2Native(g->p.color) != Black) {
2014-06-12 08:05:53 +00:00
RAM(g)[xyaddr(x, y)] |= xybit(y);
2014-07-02 21:19:39 +00:00
} else {
2014-06-12 08:05:53 +00:00
RAM(g)[xyaddr(x, y)] &= ~xybit(y);
2014-07-02 21:19:39 +00:00
}
2014-06-12 08:05:53 +00:00
g->flags |= GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_NEED_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) {
2014-07-06 18:14:24 +00:00
case powerOff:
case powerSleep:
case powerDeepSleep:
2014-07-09 18:25:02 +00:00
write_cmd(g, PCF8812_SET_FUNC | PCF8812_PD);
2014-07-06 18:14:24 +00:00
break;
case powerOn:
2014-07-09 18:25:02 +00:00
write_cmd(g, PCF8812_SET_FUNC);
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:
case GDISP_ROTATE_180:
if (g->g.Orientation == GDISP_ROTATE_90 || g->g.Orientation == GDISP_ROTATE_270) {
coord_t tmp;
tmp = g->g.Width;
g->g.Width = g->g.Height;
g->g.Height = tmp;
}
break;
case GDISP_ROTATE_90:
case GDISP_ROTATE_270:
if (g->g.Orientation == GDISP_ROTATE_0 || g->g.Orientation == GDISP_ROTATE_180) {
coord_t tmp;
tmp = g->g.Width;
g->g.Width = g->g.Height;
g->g.Height = tmp;
}
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;
2014-07-06 18:14:24 +00:00
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;
g->g.Contrast = (unsigned)g->p.ptr;
return;
}
}
#endif
2014-06-12 08:05:53 +00:00
#endif // GFX_USE_GDISP