281 lines
7.1 KiB
C
281 lines
7.1 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_TLS8204
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#include "gdisp_lld_config.h"
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#include "../../../src/gdisp/gdisp_driver.h"
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#include "board_TLS8204.h"
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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#define GDISP_TLS8204_HEIGHT 48
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#define GDISP_TLS8204_WIDTH 84
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#define GDISP_INITIAL_CONTRAST 51
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#define GDISP_INITIAL_BACKLIGHT 100
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#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
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#include "TLS8204.h"
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/*===========================================================================*/
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/* Driver local routines. */
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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_TLS8204_WIDTH)
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#define xybit(y) (1 << ((y) & 7))
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#define LCD_START_LINE_ADDR (66-2)
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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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* Display 48 * 84 / 8 = 504 bytes
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*/
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#define GDISP_SCREEN_BYTES ((GDISP_TLS8204_WIDTH * GDISP_TLS8204_HEIGHT) / 8)
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LLDSPEC gBool gdisp_lld_init(GDisplay *g) {
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// The private area is the display surface.
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if (!(g->priv = gfxAlloc(GDISP_SCREEN_BYTES)))
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gfxHalt("GDISP TLS8204: Failed to allocate private memory");
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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, gTrue);
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gfxSleepMilliseconds(100);
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setpin_reset(g, gFalse);
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gfxSleepMilliseconds(100);
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acquire_bus(g);
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// Soft reset - display on
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write_cmd(g, TLS8204_SET_FUNC | TLS8204_H0_BIT | TLS8204_H1_BIT);
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write_cmd(g, TLS8204_RESET);
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gfxSleepMilliseconds(100);
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// H0H1 = 01
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write_cmd(g, TLS8204_SET_FUNC | TLS8204_H0_BIT);
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write_cmd(g, TLS8204_SET_BIAS_6);
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write_cmd(g, TLS8204_SET_Y_LSB_FIRST);
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write_cmd(g, TLS8204_SET_VLCD0_6 | ((GDISP_INITIAL_CONTRAST * 2 + 22) & 0x7F));
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write_cmd(g, TLS8204_SET_STARTLINE_S6 | ((LCD_START_LINE_ADDR>>6) & 0x01));
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write_cmd(g, TLS8204_SET_STARTLINE_S0_5 | (LCD_START_LINE_ADDR & ((1<<6)-1)));
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// H0H1 = 00
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write_cmd(g, TLS8204_SET_FUNC);
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write_cmd(g, TLS8204_SET_VLCD7 + ((GDISP_INITIAL_CONTRAST * 2 + 22) >> 7));
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write_cmd(g, TLS8204_SET_DISPLAY_OFF);
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write_cmd(g, TLS8204_SET_DISPLAY_NORMAL);
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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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/* Turn on the back-light */
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set_backlight(g, GDISP_INITIAL_BACKLIGHT);
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/* Initialise the GDISP structure */
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g->g.Width = GDISP_TLS8204_WIDTH;
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g->g.Height = GDISP_TLS8204_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 gTrue;
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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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unsigned y;
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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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acquire_bus(g);
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for(y = 0; y < GDISP_TLS8204_HEIGHT/8; y++) {
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write_cmd(g, TLS8204_SET_X | 0); // X = 0
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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);
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}
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release_bus(g);
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g->flags &= ~GDISP_FLG_NEEDFLUSH;
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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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gCoord x, y;
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#if GDISP_NEED_CONTROL
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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 = g->g.Width - g->p.x - 1;
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break;
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case GDISP_ROTATE_180:
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x = g->g.Width - g->p.x - 1;
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y = g->g.Height - g->p.y - 1;
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break;
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case GDISP_ROTATE_270:
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x = g->g.Height - g->p.y - 1;
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y = g->p.x;
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break;
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}
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#else
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x = g->p.x;
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y = g->p.y;
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#endif
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if (g->p.color != GFX_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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}
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g->flags |= GDISP_FLG_NEEDFLUSH;
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}
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#endif
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#if GDISP_HARDWARE_PIXELREAD
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LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) {
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gCoord 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_TLS8204_HEIGHT-1 - g->p.x;
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break;
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case GDISP_ROTATE_180:
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x = GDISP_TLS8204_WIDTH-1 - g->p.x;
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y = GDISP_TLS8204_HEIGHT-1 - g->p.y;
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break;
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case GDISP_ROTATE_270:
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x = GDISP_TLS8204_WIDTH-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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return (RAM(g)[xyaddr(x, y)] & xybit(y)) ? GFX_WHITE : GFX_BLACK;
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}
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#endif
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#if GDISP_NEED_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, TLS8204_SET_FUNC | TLS8204_PD_BIT);
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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, TLS8204_SET_FUNC);
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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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case GDISP_ROTATE_0:
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case GDISP_ROTATE_180:
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if (g->g.Orientation == GDISP_ROTATE_90 || g->g.Orientation == GDISP_ROTATE_270) {
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gCoord tmp;
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tmp = g->g.Width;
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g->g.Width = g->g.Height;
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g->g.Height = tmp;
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}
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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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if (g->g.Orientation == GDISP_ROTATE_0 || g->g.Orientation == GDISP_ROTATE_180) {
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gCoord tmp;
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tmp = g->g.Width;
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g->g.Width = g->g.Height;
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g->g.Height = tmp;
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}
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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_BACKLIGHT:
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if ((unsigned)g->p.ptr > 100) g->p.ptr = (void *)100;
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set_backlight(g, (unsigned)g->p.ptr);
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g->g.Backlight = (unsigned)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) g->p.ptr = (void *)100;
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{
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uint8_t cval;
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cval = (unsigned)g->p.ptr * 2 + 22;
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acquire_bus(g);
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write_cmd(g, TLS8204_SET_FUNC | TLS8204_H0_BIT); // H1H0 = 01
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write_cmd(g, TLS8204_SET_VLCD0_6 + (cval & 0x7F));
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write_cmd(g, TLS8204_SET_FUNC); // H1H0 = 00
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write_cmd(g, TLS8204_SET_VLCD7 + (cval >> 7));
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release_bus(g);
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}
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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
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#endif // GFX_USE_GDISP
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