363 lines
11 KiB
C
363 lines
11 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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/**
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* @file drivers/gdisp/ILI9320/gdisp_lld.c
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* @brief GDISP Graphics Driver subsystem low level driver source for the ILI9320 display.
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*/
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#include "gfx.h"
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#if GFX_USE_GDISP
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/* This controller is only ever used with a 240 x 320 display */
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#if defined(GDISP_SCREEN_HEIGHT)
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#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
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#undef GDISP_SCREEN_HEIGHT
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#endif
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#if defined(GDISP_SCREEN_WIDTH)
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#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
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#undef GDISP_SCREEN_WIDTH
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#endif
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#define GDISP_LLD_DECLARATIONS
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#include "gdisp/lld/gdisp_lld.h"
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#include "gdisp_lld_board.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 320
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#endif
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#ifndef GDISP_SCREEN_WIDTH
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#define GDISP_SCREEN_WIDTH 240
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 50
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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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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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uint32_t DISPLAY_CODE;
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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#define dummy_read() { volatile uint16_t dummy; dummy = read_data(); (void) dummy; }
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#define write_reg(reg, data) { write_index(reg); write_data(data); }
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static void set_cursor(GDISPDriver *g) {
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switch(g->g.Orientation) {
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case GDISP_ROTATE_0:
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case GDISP_ROTATE_180:
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write_reg(0x0020, g->p.x);
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write_reg(0x0021, g->p.y);
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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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write_reg(0x0020, g->p.y);
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write_reg(0x0021, g->p.x);
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break;
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}
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write_index(0x0022);
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}
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static void set_viewport(GDISPDriver *g) {
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switch(g->g.Orientation) {
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case GDISP_ROTATE_0:
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case GDISP_ROTATE_180:
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write_reg(0x0050, g->p.x);
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write_reg(0x0051, g->p.x + g->p.cx - 1);
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write_reg(0x0052, g->p.y);
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write_reg(0x0053, g->p.y + g->p.cy - 1);
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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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write_reg(0x0050, g->p.y);
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write_reg(0x0051, g->p.y + g->p.cy - 1);
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write_reg(0x0052, g->p.x);
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write_reg(0x0053, g->p.x + g->p.cx - 1);
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break;
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}
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}
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LLDSPEC bool_t gdisp_lld_init(GDISPDriver *g) {
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/* Initialise your display */
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init_board();
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/* Hardware reset */
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setpin_reset(TRUE);
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gfxSleepMicroseconds(1000);
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setpin_reset(FALSE);
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gfxSleepMicroseconds(1000);
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acquire_bus();
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write_index(0); // Get controller version
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dummy_read();
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DISPLAY_CODE = read_data();
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write_reg(0x0000, 0x0001); //start Int. osc
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gfxSleepMicroseconds(500);
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write_reg(0x0001, 0x0100); //Set SS bit (shift direction of outputs is from S720 to S1)
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write_reg(0x0002, 0x0700); //select the line inversion
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write_reg(0x0003, 0x1038); //Entry mode(Horizontal : increment,Vertical : increment, AM=1)
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write_reg(0x0004, 0x0000); //Resize control(No resizing)
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write_reg(0x0008, 0x0202); //front and back porch 2 lines
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write_reg(0x0009, 0x0000); //select normal scan
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write_reg(0x000A, 0x0000); //display control 4
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write_reg(0x000C, 0x0000); //system interface(2 transfer /pixel), internal sys clock,
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write_reg(0x000D, 0x0000); //Frame marker position
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write_reg(0x000F, 0x0000); //selects clk, enable and sync signal polarity,
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write_reg(0x0010, 0x0000); //
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write_reg(0x0011, 0x0000); //power control 2 reference voltages = 1:1,
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write_reg(0x0012, 0x0000); //power control 3 VRH
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write_reg(0x0013, 0x0000); //power control 4 VCOM amplitude
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gfxSleepMicroseconds(500);
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write_reg(0x0010, 0x17B0); //power control 1 BT,AP
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write_reg(0x0011, 0x0137); //power control 2 DC,VC
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gfxSleepMicroseconds(500);
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write_reg(0x0012, 0x0139); //power control 3 VRH
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gfxSleepMicroseconds(500);
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write_reg(0x0013, 0x1d00); //power control 4 vcom amplitude
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write_reg(0x0029, 0x0011); //power control 7 VCOMH
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gfxSleepMicroseconds(500);
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write_reg(0x0030, 0x0007);
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write_reg(0x0031, 0x0403);
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write_reg(0x0032, 0x0404);
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write_reg(0x0035, 0x0002);
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write_reg(0x0036, 0x0707);
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write_reg(0x0037, 0x0606);
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write_reg(0x0038, 0x0106);
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write_reg(0x0039, 0x0007);
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write_reg(0x003c, 0x0700);
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write_reg(0x003d, 0x0707);
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write_reg(0x0020, 0x0000); //starting Horizontal GRAM Address
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write_reg(0x0021, 0x0000); //starting Vertical GRAM Address
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write_reg(0x0050, 0x0000); //Horizontal GRAM Start Position
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write_reg(0x0051, 0x00EF); //Horizontal GRAM end Position
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write_reg(0x0052, 0x0000); //Vertical GRAM Start Position
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write_reg(0x0053, 0x013F); //Vertical GRAM end Position
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switch (DISPLAY_CODE) {
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case 0x9320:
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write_reg(0x0060, 0x2700); //starts scanning from G1, and 320 drive lines
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break;
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case 0x9325:
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write_reg(0x0060, 0xA700); //starts scanning from G1, and 320 drive lines
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break;
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}
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write_reg(0x0061, 0x0001); //fixed base display
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write_reg(0x006a, 0x0000); //no scroll
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write_reg(0x0090, 0x0010); //set Clocks/Line =16, Internal Operation Clock Frequency=fosc/1,
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write_reg(0x0092, 0x0000); //set gate output non-overlap period=0
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write_reg(0x0093, 0x0003); //set Source Output Position=3
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write_reg(0x0095, 0x0110); //RGB interface(Clocks per line period=16 clocks)
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write_reg(0x0097, 0x0110); //set Gate Non-overlap Period 0 locksc
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write_reg(0x0098, 0x0110); //
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write_reg(0x0007, 0x0173); //display On
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release_bus();
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// Turn on the backlight
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set_backlight(GDISP_INITIAL_BACKLIGHT);
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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_STREAM_WRITE
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LLDSPEC void gdisp_lld_write_start(GDISPDriver *g) {
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acquire_bus();
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set_viewport(g);
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}
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LLDSPEC void gdisp_lld_write_color(GDISPDriver *g) {
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write_data(g->p.color);
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}
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LLDSPEC void gdisp_lld_write_stop(GDISPDriver *g) {
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release_bus();
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}
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LLDSPEC void gdisp_lld_write_pos(GDISPDriver *g) {
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set_cursor(g);
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}
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#endif
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#endif
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#if GDISP_HARDWARE_STREAM_READ
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LLDSPEC void gdisp_lld_read_start(GDISPDriver *g) {
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acquire_bus();
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set_viewport(g);
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set_cursor(g);
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setreadmode();
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dummy_read();
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}
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LLDSPEC color_t gdisp_lld_read_color(GDISPDriver *g) {
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return read_data();
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}
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LLDSPEC void gdisp_lld_read_stop(GDISPDriver *g) {
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setwritemode();
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release_bus();
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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(GDISPDriver *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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acquire_bus();
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write_reg(0x0007, 0x0000);
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write_reg(0x0010, 0x0000);
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write_reg(0x0011, 0x0000);
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write_reg(0x0012, 0x0000);
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write_reg(0x0013, 0x0000);
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release_bus();
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set_backlight(0);
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break;
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case powerOn:
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//*************Power On sequence ******************//
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acquire_bus();
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write_reg(0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
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write_reg(0x0011, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
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write_reg(0x0012, 0x0000); /* VREG1OUT voltage */
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write_reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
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gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */
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write_reg(0x0010, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
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write_reg(0x0011, 0x0147); /* DC1[2:0], DC0[2:0], VC[2:0] */
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gfxSleepMicroseconds(500);
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write_reg(0x0012, 0x013C); /* VREG1OUT voltage */
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gfxSleepMicroseconds(500);
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write_reg(0x0013, 0x0E00); /* VDV[4:0] for VCOM amplitude */
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write_reg(0x0029, 0x0009); /* VCM[4:0] for VCOMH */
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gfxSleepMicroseconds(500);
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write_reg(0x0007, 0x0173); /* 262K color and display ON */
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release_bus();
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set_backlight(g->g.Backlight);
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if(g->g.Powermode != powerSleep || g->g.Powermode != powerDeepSleep)
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gdisp_lld_init();
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break;
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case powerSleep:
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acquire_bus();
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write_reg(0x0007, 0x0000); /* display OFF */
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write_reg(0x0010, 0x0000); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
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write_reg(0x0011, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
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write_reg(0x0012, 0x0000); /* VREG1OUT voltage */
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write_reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
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gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */
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write_reg(0x0010, 0x0002); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
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release_bus();
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set_backlight(0);
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break;
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case powerDeepSleep:
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acquire_bus();
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write_reg(0x0007, 0x0000); /* display OFF */
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write_reg(0x0010, 0x0000); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
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write_reg(0x0011, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
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write_reg(0x0012, 0x0000); /* VREG1OUT voltage */
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write_reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
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gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */
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write_reg(0x0010, 0x0004); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
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release_bus();
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set_backlight(0);
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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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acquire_bus();
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write_reg(0x0001, 0x0100);
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write_reg(0x0003, 0x1038);
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write_reg(0x0060, 0x2700);
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release_bus();
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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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acquire_bus();
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write_reg(0x0001, 0x0100);
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write_reg(0x0003, 0x1030);
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write_reg(0x0060, 0x2700);
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release_bus();
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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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case GDISP_ROTATE_180:
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acquire_bus();
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write_reg(0x0001, 0x0000);
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write_reg(0x0003, 0x1030);
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write_reg(0x0060, 0x2700);
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release_bus();
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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_270:
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acquire_bus();
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write_reg(0x0001, 0x0000);
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write_reg(0x0003, 0x1038);
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write_reg(0x0060, 0xA700);
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release_bus();
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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)value;
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return;
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case GDISP_CONTROL_BACKLIGHT:
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if ((unsigned)g->p.ptr > 100)
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g->p.ptr = (void *)100;
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set_backlight((unsigned)g->p.ptr);
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g->g.Backlight = (unsigned)g->p.ptr;
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return;
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default:
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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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