624 lines
16 KiB
C
624 lines
16 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.io/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_SSD1848
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#include "gdisp_lld_config.h"
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#include "../../../src/gdisp/gdisp_driver.h"
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typedef struct LCD_Parameters
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{
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gU8 curXPtr;
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gU8 startXPtr; /* The area start bit position in the start column */
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gU8 endXPtr; /* The area end bit position in the end column */
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gU8 curCol;
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gU8 startCol; /* The area start column */
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gU8 endCol; /* The area end column */
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gU8 curYPtr;
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} LCD_Parameters;
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#include "board_SSD1848.h"
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#include <string.h> /* for memset */
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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 130
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#endif
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#ifndef GDISP_SCREEN_WIDTH
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#define GDISP_SCREEN_WIDTH 128
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 80
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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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#ifdef SSD1848_PAGE_PREFIX
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#define SSD1848_PAGE_WIDTH (GDISP_SCREEN_WIDTH + 1)
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#define SSD1848_PAGE_OFFSET 1
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#else
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#define SSD1848_PAGE_WIDTH GDISP_SCREEN_WIDTH
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#define SSD1848_PAGE_OFFSET 0
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#endif
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#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
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#include "SSD1848.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 PRM(g) ((LCD_Parameters *)g->priv)
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#define RAM(g) ((gU8 *)(PRM(g)+1))
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#define write_cmd2(g, cmd1, cmd2) { spi_write_cmd (g, cmd1); spi_write_data (g, cmd2); }
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#define write_cmd3(g, cmd1, cmd2, cmd3) { spi_write_cmd (g, cmd1); spi_write_data2 (g, cmd2, cmd3); }
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#define xyaddr(x, y) (SSD1848_PAGE_OFFSET + (x) + ((y) >> 3) * SSD1848_PAGE_WIDTH)
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#define xybit(y) (1 << ((y) & 7))
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static void set_viewport (GDisplay* g)
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{
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switch (g->g.Orientation)
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{
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default:
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case gOrientation0:
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spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
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spi_write_data2 (g, (gU8) (g->p.x / 8), (gU8) ((g->p.x + g->p.cx - 1) / 8));
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spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
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spi_write_data2 (g, g->p.y, g->p.y + g->p.cy - 1);
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spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
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break;
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case gOrientation90:
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spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
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spi_write_data2 (g, g->p.y, g->p.y + g->p.cy - 1);
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spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
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spi_write_data2 (g, g->g.Width - g->p.x - g->p.cx, g->g.Width - 1 - g->p.x);
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spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
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break;
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case gOrientation180:
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spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
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spi_write_data2 (g, g->g.Width - g->p.x - g->p.cx, g->g.Width - 1 - g->p.x);
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spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
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spi_write_data2 (g, g->g.Height - g->p.y - g->p.cy, g->g.Height - 1 - g->p.y);
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spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
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break;
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case gOrientation270:
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spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
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spi_write_data2 (g, g->g.Height - g->p.y - g->p.cy, g->g.Height - 1 - g->p.y);
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spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
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spi_write_data2 (g, g->p.x, g->p.x + g->p.cx - 1);
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spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
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break;
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}
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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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* 128 * 128 / 8 = 2048 bytes.
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*/
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LLDSPEC gBool gdisp_lld_init (GDisplay *g)
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{
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gU8 temp [5] = { 0 };
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/* The private area is the display surface. */
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g->priv = gfxAlloc (sizeof(DisplayData) + GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
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if (!g->priv)
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return gFalse;
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memset (g->priv, 0, sizeof(DisplayData) + GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
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/* Initialise the board interface */
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init_board (g);
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/* Init LCD */
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/* Hardware reset */
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setpin_reset (g, gFalse);
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gfxSleepMilliseconds (50);
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setpin_reset (g, gTrue);
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gfxSleepMilliseconds (50);
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setpin_reset (g, gFalse);
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acquire_bus (g);
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gfxSleepMilliseconds (50);
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spi_write_cmd (g, SSD1848_ENABLE_INTERNAL_CLOCK); /* 0xD1 */
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spi_write_cmd (g, SSD1848_EXITSLEEP); /* 0x94 */
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gfxSleepMilliseconds (20);
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spi_write_cmd (g, SSD1848_SET_FRAME_FREQ_LINEINVE);
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spi_write_data2 (g, 0x00, 0x00);
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temp [0] = 0x00;
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temp [1] = 0x0e;
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temp [2] = 0x41;
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spi_write_cmd (g, SSD1848_SET_BLACK_WHITE);
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spi_write_data_array (g, temp, 3);
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temp [0] = 0x00;
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temp [1] = 0x00;
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temp [2] = 0x00;
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spi_write_cmd (g, SSD1848_DATA_OUTPUT_SCAN_DIR);
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spi_write_data_array (g, temp, 3);
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spi_write_cmd (g, SSD1848_SETSTARTLINE);
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spi_write_data (g, 0x00);
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spi_write_cmd (g, SSD1848_COM_OUTPUT_SCAN_DIR);
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spi_write_data (g, 0x01);
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spi_write_cmd (g, SSD1848_SETDISP_CTRL); /* 0xCA */
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temp [0] = 0x00;
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temp [1] = 0x20; /* 0x1F */
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temp [2] = 0x00;
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spi_write_data_array (g, temp, 3);
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spi_write_cmd (g, SSD1848_SETPOWER_CTRL); /* 0x20 */
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spi_write_data (g, 0x0F);
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gfxSleepMilliseconds (150);
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spi_write_cmd (g, SSD1848_SETCONTRAST); /* 0x81 */
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spi_write_data2 (g, 0x28, 0x06);
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spi_write_cmd (g, SSD1848_TEMP_COMPENSATION);
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spi_write_data (g, 0x01);
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spi_write_cmd (g, SSD1848_SET_BIASING_LOCK); /* 0xFB */
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spi_write_data (g, 0x02);
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spi_write_cmd (g, 0xF3);
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temp [0] = 0xc4;
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temp [1] = 0x15;
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temp [2] = 0x00;
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temp [3] = 0x80;
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spi_write_data_array (g, temp, 4);
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spi_write_cmd (g, SSD1848_SET_FRAME_FREQ_LINEINVE);
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temp [0] = 0x40;
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temp [1] = 0x04;
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temp [2] = 0x10;
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temp [3] = 0x01;
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spi_write_data_array (g, temp, 4);
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spi_write_cmd (g, SSD1848_DISPLAYON);
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spi_write_cmd (g, SSD1848_DUAL_OPT_SET);
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spi_write_data2 (g, 0x1F, 0x06);
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release_bus (g);
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/* Finish Init */
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post_init_board (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 = gOrientation0;
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g->g.Powermode = gPowerOn;
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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_STREAM_WRITE
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LLDSPEC void gdisp_lld_write_start (GDisplay *g)
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{
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acquire_bus (g);
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set_viewport (g);
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PRM(g)->curCol = PRM(g)->startCol = (gU8) (g->p.x / 8);
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PRM(g)->endCol = (gU8) ((g->p.x + g->p.cx - 1) / 8);
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PRM(g)->curXPtr = PRM(g)->startXPtr = (gU8) (g->p.x % 8);
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PRM(g)->endXPtr = (gU8) ((g->p.x + g->p.cx - 1) % 8);
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PRM(g)->curYPtr = g->p.y;
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}
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LLDSPEC void gdisp_lld_write_color (GDisplay *g)
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{
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gU8 temp;
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gU8 a;
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gU16 y = PRM(g)->curYPtr;
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gU16 c = PRM(g)->curCol;
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temp = RAM (g)[y * 16 + c];
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if (gdispColor2Native (g->p.color))
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{
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temp |= 0x80 >> PRM(g)->curXPtr;
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}
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else
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{
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temp &= ~(0x80 >> PRM(g)->curXPtr);
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}
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RAM (g)[y * 16 + c] = temp;
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PRM(g)->curXPtr++;
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if (PRM(g)->curXPtr == 8)
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{
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spi_write_data (g, temp);
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if (PRM(g)->curCol == PRM(g)->endCol)
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{
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PRM(g)->curYPtr++;
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PRM(g)->curCol = PRM(g)->startCol;
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PRM(g)->curXPtr = PRM(g)->startXPtr;
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}
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else
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{
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PRM(g)->curCol++;
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PRM(g)->curXPtr = 0;
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}
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}
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/* If hit the boundary, flush the byte */
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else if ((PRM(g)->curCol == PRM(g)->endCol) &&
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(PRM(g)->curXPtr == PRM(g)->endXPtr + 1))
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{
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spi_write_data (g, temp);
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PRM(g)->curXPtr = PRM(g)->startXPtr;
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PRM(g)->curCol = PRM(g)->startCol;
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PRM(g)->curYPtr++;
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}
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}
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LLDSPEC void gdisp_lld_write_stop (GDisplay *g)
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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_FLUSH
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LLDSPEC void gdisp_lld_flush (GDisplay *g)
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{
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gU8 * ram;
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unsigned pages;
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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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ram = RAM (g);
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pages = GDISP_SCREEN_WIDTH / 8;
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acquire_bus (g);
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spi_write_cmd (g, SSD1848_SETSTARTLINE | 0);
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while (pages--)
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{
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spi_write_data_array (g, ram, SSD1848_PAGE_WIDTH);
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ram += SSD1848_PAGE_WIDTH;
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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_CLEARS
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LLDSPEC void gdisp_lld_clear (GDisplay *g)
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{
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gU16 area = GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT;
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if (gdispColor2Native (g->p.color))
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{
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memset (RAM (g), 0xFF, GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
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}
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else
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{
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memset (RAM (g), 0, GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
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}
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acquire_bus (g);
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spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
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spi_write_data2 (g, 0, 15);
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spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
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spi_write_data2 (g, 0, 129);
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spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
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for (; area; area--)
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{
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spi_write_data (g, 0);
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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_FILLS
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LLDSPEC void gdisp_lld_fill_area (GDisplay *g)
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{
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gCoord scol, ecol, sx, ex;
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gCoord y, col, x;
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gU16 area = (gU16) g->p.cx * g->p.cy;
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gU8 temp;
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col = scol = (gU8) (g->p.x / 8);
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ecol = (gU8) ((g->p.x + g->p.cx - 1) / 8);
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x = sx = (gU8) (g->p.x % 8);
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ex = (gU8) ((g->p.x + g->p.cx - 1) % 8);
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y = g->p.y;
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acquire_bus (g);
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set_viewport (g);
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for (; area; area--)
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{
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temp = RAM (g)[y * 16 + col];
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if (gdispColor2Native (g->p.color))
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{
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temp |= (0x80 >> x);
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}
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else
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{
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temp &= ~(0x80 >> x);
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}
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RAM (g)[y * 16 + col] = temp;
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if (++x == 8)
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{
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spi_write_data (g, temp);
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if (col == ecol)
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{
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y++;
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col = scol;
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x = sx;
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}
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else
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{
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col++;
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x = 0;
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}
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}
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/* If hit the boundary, flush the byte */
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else if ((col == ecol) && (x == ex + 1))
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{
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spi_write_data (g, temp);
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x = sx;
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col = scol;
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y++;
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}
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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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{
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gCoord x, y;
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switch (g->g.Orientation)
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{
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default:
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case gOrientation0:
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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 gOrientation90:
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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 gOrientation180:
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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 gOrientation270:
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x = GDISP_SCREEN_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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if (gdispColor2Native (g->p.color) != gdispColor2Native (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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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 gColor gdisp_lld_get_pixel_color (GDisplay *g)
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{
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gCoord x, y;
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switch (g->g.Orientation)
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{
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default:
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case gOrientation0:
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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 gOrientation90:
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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 gOrientation180:
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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 gOrientation270:
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x = GDISP_SCREEN_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 && GDISP_HARDWARE_CONTROL
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LLDSPEC void gdisp_lld_control (GDisplay *g)
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{
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switch (g->p.x)
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{
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case GDISP_CONTROL_POWER:
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if (g->g.Powermode == (gPowermode) g->p.ptr)
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return;
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switch ((gPowermode) g->p.ptr)
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{
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case gPowerOff:
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acquire_bus (g);
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spi_write_cmd (g, SSD1848_SETCONTRAST);
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spi_write_data2 (g, 0x00, 0x00); /* Drop the contrast & gain */
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spi_write_cmd (g, SSD1848_DISPLAYOFF);
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spi_write_cmd (g, SSD1848_ENTERSLEEP);
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release_bus (g);
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break;
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case gPowerSleep:
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case gPowerDeepSleep:
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acquire_bus (g);
|
|
spi_write_cmd (g, SSD1848_ENTERSLEEP);
|
|
release_bus (g);
|
|
break;
|
|
|
|
case gPowerOn:
|
|
acquire_bus (g);
|
|
spi_write_cmd (g, SSD1848_EXITSLEEP); /* need this in case we were in 'normal' sleep mode */
|
|
gfxSleepMilliseconds (5);
|
|
spi_write_cmd (g, SSD1848_DISPLAYON);
|
|
release_bus (g);
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
g->g.Powermode = (gPowermode) g->p.ptr;
|
|
return;
|
|
|
|
case GDISP_CONTROL_ORIENTATION:
|
|
if (g->g.Orientation == (gOrientation) g->p.ptr)
|
|
return;
|
|
switch ((gOrientation) g->p.ptr)
|
|
{
|
|
/* Rotation is handled by the drawing routines */
|
|
case gOrientation0:
|
|
case gOrientation180:
|
|
g->g.Height = GDISP_SCREEN_HEIGHT;
|
|
g->g.Width = GDISP_SCREEN_WIDTH;
|
|
break;
|
|
|
|
case gOrientation90:
|
|
case gOrientation270:
|
|
g->g.Height = GDISP_SCREEN_WIDTH;
|
|
g->g.Width = GDISP_SCREEN_HEIGHT;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
g->g.Orientation = (gOrientation) g->p.ptr;
|
|
return;
|
|
|
|
case GDISP_CONTROL_CONTRAST:
|
|
if ((unsigned) g->p.ptr > 100)
|
|
g->p.ptr = (void *) 100;
|
|
acquire_bus (g);
|
|
spi_write_cmd (g, SSD1848_SETCONTRAST);
|
|
spi_write_data (g, (((gU16) g->p.ptr) << 8) / 101);
|
|
release_bus (g);
|
|
g->g.Contrast = (gU8) g->p.ptr;
|
|
return;
|
|
|
|
/* Our own special controller code to inverse the display */
|
|
/* 0 = normal, 1 = inverse */
|
|
case GDISP_CONTROL_INVERSE:
|
|
acquire_bus (g);
|
|
spi_write_cmd (g, g->p.ptr ? SSD1848_INVERTDISPLAY : SSD1848_NORMALDISPLAY);
|
|
release_bus (g);
|
|
return;
|
|
}
|
|
}
|
|
#endif /* GDISP_NEED_CONTROL */
|
|
|
|
|
|
#if GDISP_HARDWARE_BITFILLS
|
|
LLDSPEC void gdisp_lld_blit_area (GDisplay *g)
|
|
{
|
|
gCoord scol, ecol, sx;
|
|
gCoord y, col;
|
|
gU16 area;
|
|
gU8 temp, temp2, i;
|
|
|
|
col = scol = (gU8) (g->p.x / 8);
|
|
ecol = (gU8) ((g->p.x + g->p.cx - 1) / 8);
|
|
sx = (gU8) (g->p.x % 8);
|
|
y = g->p.y;
|
|
area = (ecol - scol + 1) * (g->p.cy);
|
|
|
|
|
|
acquire_bus (g);
|
|
set_viewport (g);
|
|
|
|
/* Bitfill align with Column */
|
|
if (sx == 0)
|
|
{
|
|
for (; area; area--)
|
|
{
|
|
temp = RAM (g)[y * 16 + col] = *((gU8 *) g->p.ptr)++;
|
|
spi_write_data (g, temp);
|
|
if (col == ecol)
|
|
{
|
|
y++;
|
|
col = scol;
|
|
}
|
|
else
|
|
{
|
|
col++;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Bitfil doesn't align with column */
|
|
for (; area; area--)
|
|
{
|
|
temp = RAM (g)[y * 16 + col];
|
|
if (col != ecol)
|
|
{
|
|
temp |= (*((gU8 *) g->p.ptr) >> sx);
|
|
RAM (g)[y * 16 + col] = temp;
|
|
|
|
temp2 = RAM (g)[y * 16 + col + 1];
|
|
temp2 |= (*((gU8 *) g->p.ptr) << (8-sx));
|
|
RAM (g)[y * 16 + col + 1] = temp2;
|
|
((gU8 *) g->p.ptr)++;
|
|
}
|
|
|
|
spi_write_data (g, temp);
|
|
if (col == ecol)
|
|
{
|
|
y++;
|
|
col = scol;
|
|
}
|
|
else
|
|
{
|
|
col++;
|
|
}
|
|
}
|
|
}
|
|
release_bus (g);
|
|
}
|
|
#endif
|
|
|
|
#endif /* GFX_USE_GDISP */
|