214 lines
5.4 KiB
C
214 lines
5.4 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#include "gfx.h"
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#if GFX_USE_GDISP
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#define GDISP_DRIVER_VMT GDISPVMT_PCF8812
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#include "drivers/gdisp/PCF8812/gdisp_lld_config.h"
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#include "src/gdisp/driver.h"
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#include "board_PCF8812.h"
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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#ifndef GDISP_SCREEN_HEIGHT
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#define GDISP_SCREEN_HEIGHT 65
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#endif
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#ifndef GDISP_SCREEN_WIDTH
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#define GDISP_SCREEN_WIDTH 102
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 51
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#endif
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#ifndef GDISP_INITIAL_BACKLIGHT
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#define GDISP_INITIAL_BACKLIGHT 100
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#endif
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#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
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#include "drivers/gdisp/PCF8812/PCF8812.h"
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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// Some common routines and macros
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#define RAM(g) ((uint8_t *)g->priv)
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#define xyaddr(x, y) ((x) + ((y)>>3)*GDISP_SCREEN_WIDTH)
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#define xybit(y) (1<<((y)&7))
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/*
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* As this controller can't update on a pixel boundary we need to maintain the
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* the entire display surface in memory so that we can do the necessary bit
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* operations. Fortunately it is a small display in monochrome.
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* 65 * 102 / 8 = 829 bytes.
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*/
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LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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// The private area is the display surface.
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g->priv = gfxAlloc((GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8));
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// Initialise the board interface
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init_board(g);
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// Hardware reset
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setpin_reset(g, TRUE);
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gfxSleepMilliseconds(100);
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setpin_reset(g, FALSE);
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gfxSleepMilliseconds(100);
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acquire_bus(g);
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write_cmd(g, PCF8812_SET_FUNC | PCF8812_H);
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write_cmd(g, PCF8812_TEMP_CONTROL | PCF8812_TEMP_MODE_1);
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write_cmd(g, PCF8812_SET_VMULT | PCF8812_VMULT_MODE_1);
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write_cmd(g, PCF8812_SET_VOP | 0xFF);
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write_cmd(g, PCF8812_SET_FUNC);
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write_cmd(g, PCF8812_DISPLAY | PCF8812_DISPLAY_MODE_NORMAL);
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unsigned int i;
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for (i = 0; i < (GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8); ++i)
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{
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RAM(g)[i] &= 0x00;
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write_data(g, (uint8_t*)0x00, 1);
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}
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// Finish Init
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post_init_board(g);
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// Release the bus
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release_bus(g);
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/* Initialise the GDISP structure */
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g->g.Width = GDISP_SCREEN_WIDTH;
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g->g.Height = GDISP_SCREEN_HEIGHT;
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g->g.Orientation = GDISP_ROTATE_0;
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g->g.Powermode = powerOn;
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g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
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g->g.Contrast = GDISP_INITIAL_CONTRAST;
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return TRUE;
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}
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#if GDISP_HARDWARE_FLUSH
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LLDSPEC void gdisp_lld_flush(GDisplay *g) {
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// Don't flush if we don't need it.
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if (!(g->flags & GDISP_FLG_NEEDFLUSH))
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return;
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unsigned int i;
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acquire_bus(g);
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for (i = 0; i < (GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8); i += GDISP_SCREEN_WIDTH) {
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write_data(g, RAM(g) + i, GDISP_SCREEN_WIDTH);
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}
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release_bus(g);
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}
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#endif
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#if GDISP_HARDWARE_DRAWPIXEL
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LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
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coord_t x, y;
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switch(g->g.Orientation) {
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default:
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case GDISP_ROTATE_0:
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x = g->p.x;
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y = g->p.y;
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break;
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case GDISP_ROTATE_90:
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x = g->p.y;
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y = GDISP_SCREEN_HEIGHT-1 - g->p.x;
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break;
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case GDISP_ROTATE_180:
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x = GDISP_SCREEN_WIDTH-1 - g->p.x;
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y = GDISP_SCREEN_HEIGHT-1 - g->p.y;
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break;
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case GDISP_ROTATE_270:
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x = GDISP_SCREEN_HEIGHT-1 - g->p.y;
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y = g->p.x;
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break;
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}
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if (gdispColor2Native(g->p.color) == Black)
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RAM(g)[xyaddr(x, y)] |= xybit(y);
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else
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RAM(g)[xyaddr(x, y)] &= ~xybit(y);
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g->flags |= GDISP_FLG_NEEDFLUSH;
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}
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#endif
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#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
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LLDSPEC void gdisp_lld_control(GDisplay *g) {
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switch(g->p.x) {
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case GDISP_CONTROL_POWER:
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if (g->g.Powermode == (powermode_t)g->p.ptr)
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return;
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switch((powermode_t)g->p.ptr) {
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case powerOff:
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case powerSleep:
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case powerDeepSleep:
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acquire_bus(g);
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write_cmd(g, PCF8812_DISPLAY_OFF);
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release_bus(g);
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break;
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case powerOn:
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acquire_bus(g);
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write_cmd(g, PCF8812_DISPLAY_ON);
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release_bus(g);
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break;
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default:
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return;
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}
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g->g.Powermode = (powermode_t)g->p.ptr;
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return;
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case GDISP_CONTROL_ORIENTATION:
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if (g->g.Orientation == (orientation_t)g->p.ptr)
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return;
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switch((orientation_t)g->p.ptr) {
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/* Rotation is handled by the drawing routines */
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case GDISP_ROTATE_0:
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case GDISP_ROTATE_180:
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g->g.Height = GDISP_SCREEN_HEIGHT;
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g->g.Width = GDISP_SCREEN_WIDTH;
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break;
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case GDISP_ROTATE_90:
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case GDISP_ROTATE_270:
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g->g.Height = GDISP_SCREEN_WIDTH;
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g->g.Width = GDISP_SCREEN_HEIGHT;
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break;
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default:
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return;
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}
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g->g.Orientation = (orientation_t)g->p.ptr;
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return;
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case GDISP_CONTROL_CONTRAST:
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if ((unsigned)g->p.ptr > 100)
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g->p.ptr = (void *)100;
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acquire_bus(g);
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release_bus(g);
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g->g.Contrast = (unsigned)g->p.ptr;
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return;
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}
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}
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#endif // GDISP_NEED_CONTROL
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#endif // GFX_USE_GDISP
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