300 lines
7.8 KiB
C
300 lines
7.8 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_SSD1322
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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_SSD1322.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 64 // This controller should support 64
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#endif
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#ifndef GDISP_SCREEN_WIDTH
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#define GDISP_SCREEN_WIDTH 256
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 100
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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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#ifndef SSD1322_USE_DMA
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#define SSD1322_USE_DMA GFXOFF
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#endif
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#define SSD1322_ROW_WIDTH (GDISP_SCREEN_WIDTH/2)
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#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
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#include "SSD1322.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) ((gU8 *)g->priv)
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// Some common routines and macros
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#define xyaddr(x, y) ((x) + (y)*SSD1322_ROW_WIDTH)
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#define xybits(x, y, c) ((c)<<(((x)&1)<<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 4 bit grayscale.
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* 64 * 128 / 2 = 4096 bytes.
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*/
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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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g->priv = gfxAlloc(GDISP_SCREEN_HEIGHT * SSD1322_ROW_WIDTH);
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// Initialise the board interface
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init_board(g);
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post_init_board(g);
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// Hardware reset
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setpin_reset(g, gTrue);
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gfxSleepMilliseconds(20);
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setpin_reset(g, gFalse);
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gfxSleepMilliseconds(200);
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write_cmd(g,CMD_SET_COMMAND_LOCK);
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write_data(g,0x12); // Unlock OLED driver IC
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write_cmd(g,CMD_SET_DISPLAY_OFF);
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write_cmd(g,CMD_SET_CLOCK_DIVIDER);
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write_data(g,0x91);
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write_cmd(g,CMD_SET_MULTIPLEX_RATIO);
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write_data(g,0x3F); //duty = 1/64*,64 COMS are enabled
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write_cmd(g,CMD_SET_DISPLAY_OFFSET);
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write_data(g,0x00);
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write_cmd(g,CMD_SET_DISPLAY_START_LINE); //set start line position
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write_data(g,0x00);
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write_cmd(g,CMD_SET_REMAP);
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write_data(g,0x14); //Horizontal address increment,Disable Column Address Re-map,Enable Nibble Re-map,Scan from COM[N-1] to COM0,Disable COM Split Odd Even
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write_data(g,0x11); //Enable Dual COM mode
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write_cmd(g,0xB5); //GPIO
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write_data(g,0x00);
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//writeCommand(0x00);
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write_cmd(g,CMD_SET_FUNCTION_SELECTION);
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write_data(g,0x01);// selection external VDD
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write_cmd(g,CMD_DISPLAY_ENHANCEMENT);
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write_data(g,0xA0);// enables the external VSL
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write_data(g,0xb5);// 0xfd,Enhanced low GS display quality;default is 0xb5(normal),
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write_cmd(g,CMD_SET_CONTRAST_CURRENT);
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write_data(g,0x7f); // 0xff default is 0x7f
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write_cmd(g,CMD_MASTER_CURRENT_CONTROL);
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write_data(g,0x0f); //default is 0x0f
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write_cmd(g,0xB9); //GRAY TABLE,linear Gray Scale
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write_cmd(g,CMD_SET_PHASE_LENGTH);
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write_data(g,0xE2); // default is 0x74
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write_cmd(g,CMD_DISPLAY_ENHANCEMENT_B);
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write_data(g,0xA2); // Reserved;default is 0xa2(normal)
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write_data(g,0x20);
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write_cmd(g,CMD_SET_PRECHARGE_VOLTAGE);
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write_data(g,0x1F); // 0.6xVcc
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write_cmd(g,CMD_SET_SECOND_PRECHARGE_PERIOD);
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write_data(g,0x08); // default
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write_cmd(g,CMD_SET_VCOMH_VOLTAGE );
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write_data(g,0x07); // 0.86xVcc;default is 0x04
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write_cmd(g,CMD_SET_DISPLAY_MODE_NORMAL);
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write_cmd(g,CMD_EXIT_PARTIAL_DISPLAY);
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write_cmd(g,CMD_SET_DISPLAY_ON);
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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 = gOrientation180;
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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_FLUSH
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LLDSPEC void gdisp_lld_flush(GDisplay *g) {
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gU8 * ram;
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unsigned cols,rows;
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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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write_cmd(g, CMD_SET_COLUMN_ADDR); // range 28 to 91 for 256 pixels to x
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write_data(g, 28);
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write_data(g, GDISP_SCREEN_WIDTH/4 + 28 - 1);
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write_cmd(g, CMD_SET_ROW_ADDR); // range 0 to 63 for 64 pixels
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write_data(g, 0);
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write_data(g, GDISP_SCREEN_HEIGHT-1);
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write_cmd(g, CMD_WRITE_RAM);
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ram = RAM(g);
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#if SSD1322_USE_DMA
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write_data_DMA(g, ram);
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#else
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for(rows = 0; rows < GDISP_SCREEN_HEIGHT; rows ++) {
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for(cols = 0;cols < GDISP_SCREEN_WIDTH/2; cols ++) {
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write_data(g, *ram++);
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}
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}
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#endif
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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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gU8 *ram;
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switch(g->g.Orientation) {
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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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ram = RAM(g)+xyaddr(x,y);
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*ram &= ~xybits(x, y, LLDCOLOR_MASK());
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*ram |= xybits(x, y, gdispColor2Native(g->p.color));
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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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gCoord x, y;
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LLDCOLOR_TYPE c;
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switch(g->g.Orientation) {
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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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c = (RAM(g)[xyaddr(x, y)]>>((x & 1)<<2)) & LLDCOLOR_MASK();
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return gdispNative2Color(c);
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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 == (gPowermode)g->p.ptr)
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return;
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switch((gPowermode)g->p.ptr) {
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case gPowerOff:
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case gPowerSleep:
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case gPowerDeepSleep:
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acquire_bus(g);
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write_cmd(g, CMD_SET_DISPLAY_MODE_OFF);
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release_bus(g);
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break;
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case gPowerOn:
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acquire_bus(g);
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write_cmd(g, CMD_SET_DISPLAY_MODE_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 = (gPowermode)g->p.ptr;
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return;
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case GDISP_CONTROL_ORIENTATION:
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if (g->g.Orientation == (gOrientation)g->p.ptr)
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return;
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switch((gOrientation)g->p.ptr) {
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/* Rotation is handled by the drawing routines */
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case gOrientation0:
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case gOrientation180:
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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 gOrientation90:
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case gOrientation270:
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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 = (gOrientation)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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