ugfx/drivers/gdisp/TLS8204/gdisp_lld_TLS8204.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_TLS8204
#include "drivers/gdisp/TLS8204/gdisp_lld_config.h"
#include "src/gdisp/gdisp_driver.h"
#include "board_TLS8204.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#define GDISP_TLS8204_HEIGHT 48
#define GDISP_TLS8204_WIDTH 84
#define GDISP_INITIAL_CONTRAST 51
#define GDISP_INITIAL_BACKLIGHT 100
#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
#include "drivers/gdisp/TLS8204/TLS8204.h"
/*===========================================================================*/
/* Driver local routines. */
/*===========================================================================*/
// Some common routines and macros
#define RAM(g) ((uint8_t *)g->priv)
#define xyaddr(x, y) ((x) + ((y) >> 3) * GDISP_TLS8204_WIDTH)
#define xybit(y) (1 << ((y) & 7))
#define LCD_START_LINE_ADDR (66-2)
/*===========================================================================*/
/* 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.
* Display 48 * 84 / 8 = 504 bytes
*/
#define GDISP_SCREEN_BYTES ((GDISP_TLS8204_WIDTH * GDISP_TLS8204_HEIGHT) / 8)
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// The private area is the display surface.
if (!(g->priv = gfxAlloc(GDISP_SCREEN_BYTES)))
gfxHalt("GDISP TLS8204: Failed to allocate private memory");
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(100);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(100);
acquire_bus(g);
// Soft reset - display on
write_cmd(g, TLS8204_SET_FUNC | TLS8204_H0_BIT | TLS8204_H1_BIT);
write_cmd(g, TLS8204_RESET);
gfxSleepMilliseconds(100);
// H0H1 = 01
write_cmd(g, TLS8204_SET_FUNC | TLS8204_H0_BIT);
write_cmd(g, TLS8204_SET_BIAS_6);
write_cmd(g, TLS8204_SET_Y_LSB_FIRST);
write_cmd(g, TLS8204_SET_VLCD0_6 | ((GDISP_INITIAL_CONTRAST * 2 + 22) & 0x7F));
write_cmd(g, TLS8204_SET_STARTLINE_S6 | ((LCD_START_LINE_ADDR>>6) & 0x01));
write_cmd(g, TLS8204_SET_STARTLINE_S0_5 | (LCD_START_LINE_ADDR & ((1<<6)-1)));
// H0H1 = 00
write_cmd(g, TLS8204_SET_FUNC);
write_cmd(g, TLS8204_SET_VLCD7 + ((GDISP_INITIAL_CONTRAST * 2 + 22) >> 7));
write_cmd(g, TLS8204_SET_DISPLAY_OFF);
write_cmd(g, TLS8204_SET_DISPLAY_NORMAL);
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// 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_TLS8204_WIDTH;
g->g.Height = GDISP_TLS8204_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) {
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unsigned y;
// Don't flush if we don't need it.
if (!(g->flags & GDISP_FLG_NEEDFLUSH))
return;
acquire_bus(g);
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for(y = 0; y < GDISP_TLS8204_HEIGHT/8; y++) {
write_cmd(g, TLS8204_SET_X | 0); // X = 0
write_cmd(g, TLS8204_SET_Y | y); // Y = 0
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write_data(g, RAM(g)+y*GDISP_TLS8204_WIDTH, GDISP_SCREEN_BYTES);
}
release_bus(g);
g->flags &= ~GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
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;
y = g->g.Width - g->p.x - 1;
break;
case GDISP_ROTATE_180:
x = g->g.Width - g->p.x - 1;
y = g->g.Height - g->p.y - 1;
break;
case GDISP_ROTATE_270:
x = g->g.Height - g->p.y - 1;
y = g->p.x;
break;
}
#else
x = g->p.x;
y = g->p.y;
#endif
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if (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_HARDWARE_PIXELREAD
LLDSPEC color_t gdisp_lld_get_pixel_color(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;
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y = GDISP_TLS8204_HEIGHT-1 - g->p.x;
break;
case GDISP_ROTATE_180:
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x = GDISP_TLS8204_WIDTH-1 - g->p.x;
y = GDISP_TLS8204_HEIGHT-1 - g->p.y;
break;
case GDISP_ROTATE_270:
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x = GDISP_TLS8204_WIDTH-1 - g->p.y;
y = g->p.x;
break;
}
return (RAM(g)[xyaddr(x, y)] & xybit(y)) ? White : Black;
}
#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) {
case powerOff:
case powerSleep:
case powerDeepSleep:
acquire_bus(g);
write_cmd(g, TLS8204_SET_FUNC | TLS8204_PD_BIT);
release_bus(g);
break;
case powerOn:
acquire_bus(g);
write_cmd(g, TLS8204_SET_FUNC);
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:
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;
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;
{
uint8_t cval;
cval = (unsigned)g->p.ptr * 2 + 22;
acquire_bus(g);
write_cmd(g, TLS8204_SET_FUNC | TLS8204_H0_BIT); // H1H0 = 01
write_cmd(g, TLS8204_SET_VLCD0_6 + (cval & 0x7F));
write_cmd(g, TLS8204_SET_FUNC); // H1H0 = 00
write_cmd(g, TLS8204_SET_VLCD7 + (cval >> 7));
release_bus(g);
}
g->g.Contrast = (unsigned)g->p.ptr;
return;
}
}
#endif
#endif // GFX_USE_GDISP