mirror of
https://github.com/Rockbox/rockbox.git
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Commit FS#9679 by Thomas Martitz. Adds c200v2 to the target tree. Has some buttons defined, a bootloader, and stubs for most drivers.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19574 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Giacomelli
parent
be26da8662
commit
c97f640060
13 changed files with 957 additions and 3 deletions
71
firmware/target/arm/as3525/sansa-c200v2/backlight-c200v2.c
Normal file
71
firmware/target/arm/as3525/sansa-c200v2/backlight-c200v2.c
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@ -0,0 +1,71 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: backlight-e200v2-fuze.c 19224 2008-11-26 10:21:03Z pondlife $
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*
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* Copyright (C) 2006 by Barry Wardell
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "backlight-target.h"
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#include "system.h"
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#include "lcd.h"
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#include "backlight.h"
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#include "ascodec-target.h"
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#include "as3514.h"
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/* TODO: This file is copy & pasted from backlight-e200v2-fuze.c, as I think
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* it'll be the same for c200v2; prove it */
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void _backlight_set_brightness(int brightness)
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{
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if (brightness > 0)
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_backlight_on();
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else
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_backlight_off();
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}
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void _backlight_on(void)
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{
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#ifdef HAVE_LCD_SLEEP
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backlight_lcd_sleep_countdown(false); /* stop counter */
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#endif
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#ifdef HAVE_LCD_ENABLE
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lcd_enable(true); /* power on lcd + visible display */
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#endif
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ascodec_write(AS3514_DCDC15, backlight_brightness);
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}
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void _backlight_off(void)
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{
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ascodec_write(AS3514_DCDC15, 0x0);
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#ifdef HAVE_LCD_ENABLE
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lcd_enable(false); /* power off visible display */
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#endif
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#ifdef HAVE_LCD_SLEEP
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backlight_lcd_sleep_countdown(true); /* start countdown */
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#endif
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}
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void _buttonlight_on(void)
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{
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GPIOD_DIR |= (1<<7);
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GPIOD_PIN(7) = (1<<7);
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}
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void _buttonlight_off(void)
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{
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GPIOD_DIR |= (1<<7);
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GPIOD_PIN(7) = 0;
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}
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32
firmware/target/arm/as3525/sansa-c200v2/backlight-target.h
Normal file
32
firmware/target/arm/as3525/sansa-c200v2/backlight-target.h
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@ -0,0 +1,32 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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||||
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: backlight-target.h 19136 2008-11-18 13:44:27Z dave $
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*
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* Copyright (C) 2006 Barry Wardell
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef BACKLIGHT_TARGET_H
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#define BACKLIGHT_TARGET_H
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#define _backlight_init() true
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void _backlight_on(void);
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void _backlight_off(void);
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void _backlight_set_brightness(int brightness);
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int __backlight_is_on(void);
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void _buttonlight_on(void);
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void _buttonlight_off(void);
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#endif
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111
firmware/target/arm/as3525/sansa-c200v2/button-c200v2.c
Normal file
111
firmware/target/arm/as3525/sansa-c200v2/button-c200v2.c
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@ -0,0 +1,111 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: button-e200v2.c 19035 2008-11-07 05:31:05Z jdgordon $
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*
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* Copyright (C) 2006 by Barry Wardell
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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/* Taken from button-h10.c by Barry Wardell and reverse engineering by MrH. */
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#include "system.h"
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#include "button.h"
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#include "backlight.h"
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#include "powermgmt.h"
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#ifndef BOOTLOADER
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/* Buttons */
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static bool hold_button = false;
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static bool hold_button_old = false;
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#define _button_hold() hold_button
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#else
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#define _button_hold() false /* FIXME */
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#endif /* BOOTLOADER */
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static int int_btn = BUTTON_NONE;
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void button_init_device(void)
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{
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}
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bool button_hold(void)
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{
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return _button_hold();
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}
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/* device buttons */
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void button_int(void)
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{
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int delay = 0x50;
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int dir_save_c = 0;
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int afsel_save_c = 0;
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int_btn = BUTTON_NONE;
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/* Save the current direction and afsel */
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dir_save_c = GPIOC_DIR;
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afsel_save_c = GPIOC_AFSEL;
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GPIOA_DIR &= ~(1<<2);
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GPIOC_AFSEL &= ~(1<<6|1<<5|1<<4|1<<3);
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GPIOC_DIR |= (1<<6|1<<5|1<<4|1<<3);
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/* These should not be needed with button event interupts */
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/* they are necessary now to clear out lcd data */
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GPIOC_PIN(6) = (1<<6);
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GPIOC_PIN(5) = (1<<5);
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GPIOC_PIN(4) = (1<<4);
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GPIOC_PIN(3) = (1<<3);
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GPIOC_DIR &= ~(1<<6|1<<5|1<<4|1<<3);
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while(delay--);
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/* direct GPIO connections */
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if (GPIOA_PIN(3))
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int_btn |= BUTTON_POWER;
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if (!GPIOC_PIN(6))
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int_btn |= BUTTON_RIGHT;
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if (!GPIOC_PIN(5))
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int_btn |= BUTTON_UP;
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if (!GPIOC_PIN(4))
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int_btn |= BUTTON_SELECT;
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if (!GPIOC_PIN(3))
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int_btn |= BUTTON_DOWN;
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/* return to settings needed for lcd */
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GPIOC_DIR = dir_save_c;
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GPIOC_AFSEL = afsel_save_c;
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}
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/*
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* Get button pressed from hardware
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*/
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int button_read_device(void)
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{
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/* Read buttons directly */
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button_int();
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#ifndef BOOTLOADER
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/* light handling */
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if (hold_button != hold_button_old)
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{
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hold_button_old = hold_button;
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backlight_hold_changed(hold_button);
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}
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#endif /* BOOTLOADER */
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return int_btn;
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}
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55
firmware/target/arm/as3525/sansa-c200v2/button-target.h
Normal file
55
firmware/target/arm/as3525/sansa-c200v2/button-target.h
Normal file
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@ -0,0 +1,55 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id:$
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*
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* Copyright (C) 2007 by Mark Arigo
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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||||
* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _BUTTON_TARGET_H_
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#define _BUTTON_TARGET_H_
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#include <stdbool.h>
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#include "config.h"
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#define HAS_BUTTON_HOLD
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bool button_hold(void);
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void button_init_device(void);
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int button_read_device(void);
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/* Sandisk Sansa c200 button codes */
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/* Main unit's buttons */
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#define BUTTON_REC 0x00000001
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#define BUTTON_DOWN 0x00000002
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#define BUTTON_RIGHT 0x00000004
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#define BUTTON_LEFT 0x00000008
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#define BUTTON_SELECT 0x00000010
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#define BUTTON_UP 0x00000020
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#define BUTTON_POWER 0x00000040
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#define BUTTON_VOL_UP 0x00000080
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#define BUTTON_VOL_DOWN 0x00000100
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#define BUTTON_MAIN 0x00000fff
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/* No Remote control */
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#define BUTTON_REMOTE 0
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#define POWEROFF_BUTTON BUTTON_POWER
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#define POWEROFF_COUNT 10
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#endif /* _BUTTON_TARGET_H_ */
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429
firmware/target/arm/as3525/sansa-c200v2/lcd-c200v2.c
Normal file
429
firmware/target/arm/as3525/sansa-c200v2/lcd-c200v2.c
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@ -0,0 +1,429 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: lcd-e200v2.c 19453 2008-12-16 02:50:39Z saratoga $
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*
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* Copyright (C) 2004 by Linus Nielsen Feltzing
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
|
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
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* KIND, either express or implied.
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*
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****************************************************************************/
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/* FIXME: Copied from e200v2 lcd driver, unlikely to work, but maybe */
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#include "config.h"
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#include "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "thread.h"
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#include <string.h>
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#include <stdlib.h>
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "bidi.h"
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#include "clock-target.h"
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static bool display_on = false; /* is the display turned on? */
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static bool display_flipped = false;
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static int y_offset = 0; /* needed for flip */
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/* register defines */
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#define R_START_OSC 0x00
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#define R_DRV_OUTPUT_CONTROL 0x01
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#define R_DRV_WAVEFORM_CONTROL 0x02
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#define R_ENTRY_MODE 0x03
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#define R_COMPARE_REG1 0x04
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#define R_COMPARE_REG2 0x05
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#define R_DISP_CONTROL1 0x07
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#define R_DISP_CONTROL2 0x08
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#define R_DISP_CONTROL3 0x09
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#define R_FRAME_CYCLE_CONTROL 0x0b
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#define R_EXT_DISP_IF_CONTROL 0x0c
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#define R_POWER_CONTROL1 0x10
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#define R_POWER_CONTROL2 0x11
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#define R_POWER_CONTROL3 0x12
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#define R_POWER_CONTROL4 0x13
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#define R_RAM_ADDR_SET 0x21
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#define R_WRITE_DATA_2_GRAM 0x22
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#define R_GAMMA_FINE_ADJ_POS1 0x30
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#define R_GAMMA_FINE_ADJ_POS2 0x31
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#define R_GAMMA_FINE_ADJ_POS3 0x32
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#define R_GAMMA_GRAD_ADJ_POS 0x33
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#define R_GAMMA_FINE_ADJ_NEG1 0x34
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#define R_GAMMA_FINE_ADJ_NEG2 0x35
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#define R_GAMMA_FINE_ADJ_NEG3 0x36
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#define R_GAMMA_GRAD_ADJ_NEG 0x37
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#define R_GAMMA_AMP_ADJ_RES_POS 0x38
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#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
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|
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#define R_GATE_SCAN_POS 0x40
|
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#define R_VERT_SCROLL_CONTROL 0x41
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#define R_1ST_SCR_DRV_POS 0x42
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#define R_2ND_SCR_DRV_POS 0x43
|
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#define R_HORIZ_RAM_ADDR_POS 0x44
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#define R_VERT_RAM_ADDR_POS 0x45
|
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|
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#define R_ENTRY_MODE_HORZ 0x7030
|
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#define R_ENTRY_MODE_VERT 0x7038
|
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#define R_ENTRY_MODE_SOLID_VERT 0x1038
|
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|
||||
/* TODO: Implement this function */
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static void lcd_delay(int x)
|
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{
|
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/* This is just arbitrary - the OF does something more complex */
|
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x *= 1024;
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while (x--);
|
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}
|
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|
||||
/* DBOP initialisation, do what OF does */
|
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static void ams3525_dbop_init(void)
|
||||
{
|
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CGU_DBOP = (1<<3) | CLK_DIV(AS3525_PCLK_FREQ, AS3525_DBOP_FREQ);
|
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|
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DBOP_TIMPOL_01 = 0xe167e167;
|
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DBOP_TIMPOL_23 = 0xe167006e;
|
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DBOP_CTRL = 0x41008;
|
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|
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GPIOB_AFSEL = 0xfc;
|
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GPIOC_AFSEL = 0xff;
|
||||
|
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DBOP_TIMPOL_23 = 0x6000e;
|
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DBOP_CTRL = 0x51008;
|
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DBOP_TIMPOL_01 = 0x6e167;
|
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DBOP_TIMPOL_23 = 0xa167e06f;
|
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|
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/* TODO: The OF calls some other functions here, but maybe not important */
|
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}
|
||||
|
||||
|
||||
static void lcd_write_cmd(int cmd)
|
||||
{
|
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/* Write register */
|
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DBOP_CTRL &= ~(1<<14);
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|
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DBOP_TIMPOL_23 = 0xa167006e;
|
||||
|
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DBOP_DOUT = cmd;
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|
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/* Wait for fifo to empty */
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while ((DBOP_STAT & (1<<10)) == 0);
|
||||
|
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DBOP_TIMPOL_23 = 0xa167e06f;
|
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}
|
||||
|
||||
void lcd_write_data(const fb_data* p_bytes, int count)
|
||||
{
|
||||
while (count--)
|
||||
{
|
||||
DBOP_DOUT = *p_bytes++;
|
||||
|
||||
/* Wait for fifo to empty */
|
||||
while ((DBOP_STAT & (1<<10)) == 0);
|
||||
}
|
||||
}
|
||||
|
||||
static void lcd_write_reg(int reg, int value)
|
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{
|
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unsigned short data = value;
|
||||
|
||||
lcd_write_cmd(reg);
|
||||
lcd_write_data(&data, 1);
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||||
}
|
||||
|
||||
/*** hardware configuration ***/
|
||||
|
||||
void lcd_set_contrast(int val)
|
||||
{
|
||||
(void)val;
|
||||
}
|
||||
|
||||
void lcd_set_invert_display(bool yesno)
|
||||
{
|
||||
(void)yesno;
|
||||
}
|
||||
|
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static void flip_lcd(bool yesno)
|
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{
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(void)yesno;
|
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}
|
||||
|
||||
|
||||
/* turn the display upside down (call lcd_update() afterwards) */
|
||||
void lcd_set_flip(bool yesno)
|
||||
{
|
||||
display_flipped = yesno;
|
||||
y_offset = yesno ? 4 : 0; /* FIXME: Is a y_offset needed? */
|
||||
|
||||
if (display_on)
|
||||
flip_lcd(yesno);
|
||||
}
|
||||
|
||||
static void _display_on(void)
|
||||
{
|
||||
/* Initialisation the display the same way as the original firmware */
|
||||
|
||||
lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscilation */
|
||||
|
||||
lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x011b); /* 220 lines, GS=0, SS=1 */
|
||||
|
||||
/* B/C = 1: n-line inversion form
|
||||
* EOR = 1: polarity inversion occurs by applying an EOR to odd/even
|
||||
* frame select signal and an n-line inversion signal.
|
||||
* FLD = 01b: 1 field interlaced scan, external display iface */
|
||||
lcd_write_reg(R_DRV_WAVEFORM_CONTROL, 0x0700);
|
||||
|
||||
/* Address counter updated in horizontal direction; left to right;
|
||||
* vertical increment horizontal increment.
|
||||
* data format for 8bit transfer or spi = 65k (5,6,5) */
|
||||
lcd_write_reg(R_ENTRY_MODE, 0x0030);
|
||||
|
||||
/* Replace data on writing to GRAM */
|
||||
lcd_write_reg(R_COMPARE_REG1, 0);
|
||||
lcd_write_reg(R_COMPARE_REG2, 0);
|
||||
|
||||
lcd_write_reg(R_DISP_CONTROL1, 0x0000); /* GON = 0, DTE = 0, D1-0 = 00b */
|
||||
|
||||
/* Front porch lines: 2; Back porch lines: 2; */
|
||||
lcd_write_reg(R_DISP_CONTROL2, 0x0203);
|
||||
|
||||
/* Scan cycle = 0 frames */
|
||||
lcd_write_reg(R_DISP_CONTROL3, 0x0000);
|
||||
|
||||
/* 16 clocks */
|
||||
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0000);
|
||||
|
||||
/* 18-bit RGB interface (one transfer/pixel)
|
||||
* internal clock operation;
|
||||
* System interface/VSYNC interface */
|
||||
lcd_write_reg(R_EXT_DISP_IF_CONTROL, 0x0000);
|
||||
|
||||
|
||||
/* zero everything*/
|
||||
lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* STB = 0, SLP = 0 */
|
||||
|
||||
lcd_delay(10);
|
||||
|
||||
/* initialise power supply */
|
||||
|
||||
/* DC12-10 = 000b: Step-up1 = clock/8,
|
||||
* DC02-00 = 000b: Step-up2 = clock/16,
|
||||
* VC2-0 = 010b: VciOUT = 0.87 * VciLVL */
|
||||
lcd_write_reg(R_POWER_CONTROL2, 0x0002);
|
||||
|
||||
/* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */
|
||||
lcd_write_reg(R_POWER_CONTROL3, 0x0008);
|
||||
|
||||
lcd_delay(40);
|
||||
|
||||
lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */
|
||||
|
||||
/* This register is unknown */
|
||||
lcd_write_reg(0x56, 0x80f);
|
||||
|
||||
|
||||
lcd_write_reg(R_POWER_CONTROL1, 0x4140);
|
||||
|
||||
lcd_delay(10);
|
||||
|
||||
lcd_write_reg(R_POWER_CONTROL2, 0x0000);
|
||||
lcd_write_reg(R_POWER_CONTROL3, 0x0013);
|
||||
|
||||
lcd_delay(20);
|
||||
|
||||
lcd_write_reg(R_POWER_CONTROL4, 0x6d0e);
|
||||
|
||||
lcd_delay(20);
|
||||
|
||||
lcd_write_reg(R_POWER_CONTROL4, 0x6d0e);
|
||||
|
||||
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0002);
|
||||
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0707);
|
||||
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0182);
|
||||
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0203);
|
||||
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0706);
|
||||
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0006);
|
||||
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0706);
|
||||
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0000);
|
||||
lcd_write_reg(R_GAMMA_AMP_ADJ_RES_POS, 0x030f);
|
||||
lcd_write_reg(R_GAMMA_AMP_AVG_ADJ_RES_NEG, 0x0f08);
|
||||
|
||||
|
||||
lcd_write_reg(R_RAM_ADDR_SET, 0);
|
||||
lcd_write_reg(R_GATE_SCAN_POS, 0);
|
||||
lcd_write_reg(R_VERT_SCROLL_CONTROL, 0);
|
||||
|
||||
lcd_write_reg(R_1ST_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
|
||||
lcd_write_reg(R_2ND_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
|
||||
|
||||
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_WIDTH-1) << 8);
|
||||
lcd_write_reg(R_VERT_RAM_ADDR_POS, (LCD_HEIGHT-1) << 8);
|
||||
|
||||
|
||||
lcd_write_reg(R_DISP_CONTROL1, 0x0037);
|
||||
|
||||
display_on=true; /* must be done before calling lcd_update() */
|
||||
lcd_update();
|
||||
}
|
||||
|
||||
/* LCD init */
|
||||
void lcd_init_device(void)
|
||||
{
|
||||
ams3525_dbop_init();
|
||||
|
||||
/* Init GPIOs the same as the OF */
|
||||
|
||||
GPIOA_DIR |= (1<<5);
|
||||
GPIOA_PIN(5) = 0;
|
||||
|
||||
GPIOA_PIN(3) = (1<<3);
|
||||
|
||||
GPIOA_DIR |= (3<<3);
|
||||
|
||||
GPIOA_PIN(3) = (1<<3);
|
||||
|
||||
GPIOA_PIN(4) = 0; /*c80b0040 := 0;*/
|
||||
|
||||
GPIOA_DIR |= (1<<7);
|
||||
GPIOA_PIN(7) = 0;
|
||||
|
||||
lcd_delay(1);
|
||||
|
||||
GPIOA_PIN(5) = (1<<5);
|
||||
|
||||
lcd_delay(1);
|
||||
|
||||
_display_on();
|
||||
}
|
||||
|
||||
void lcd_enable(bool on)
|
||||
{
|
||||
if(display_on!=on)
|
||||
{
|
||||
if(on)
|
||||
{
|
||||
_display_on();
|
||||
lcd_call_enable_hook();
|
||||
}
|
||||
else
|
||||
{
|
||||
/* TODO: Implement off sequence */
|
||||
display_on=false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool lcd_enabled(void)
|
||||
{
|
||||
return display_on;
|
||||
}
|
||||
|
||||
void lcd_sleep(void)
|
||||
{
|
||||
/* TODO */
|
||||
}
|
||||
|
||||
/*** update functions ***/
|
||||
|
||||
/* Performance function to blit a YUV bitmap directly to the LCD
|
||||
* src_x, src_y, width and height should be even
|
||||
* x, y, width and height have to be within LCD bounds
|
||||
*/
|
||||
void lcd_blit_yuv(unsigned char * const src[3],
|
||||
int src_x, int src_y, int stride,
|
||||
int x, int y, int width, int height)
|
||||
{
|
||||
(void)src;
|
||||
(void)src_x;
|
||||
(void)src_y;
|
||||
(void)stride;
|
||||
(void)x;
|
||||
(void)y;
|
||||
(void)width;
|
||||
(void)height;
|
||||
}
|
||||
|
||||
/* Update the display.
|
||||
This must be called after all other LCD functions that change the display. */
|
||||
void lcd_update(void)
|
||||
{
|
||||
if (!display_on)
|
||||
return;
|
||||
|
||||
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
|
||||
|
||||
/* Set start position and window */
|
||||
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_WIDTH-1) << 8);
|
||||
lcd_write_reg(R_VERT_RAM_ADDR_POS,
|
||||
((y_offset + LCD_HEIGHT-1) << 8) | y_offset);
|
||||
lcd_write_reg(R_RAM_ADDR_SET, (y_offset) << 8);
|
||||
|
||||
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
||||
|
||||
lcd_write_data((unsigned short *)lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT);
|
||||
|
||||
} /* lcd_update */
|
||||
|
||||
|
||||
/* Update a fraction of the display. */
|
||||
void lcd_update_rect(int x, int y, int width, int height)
|
||||
{
|
||||
int ymax;
|
||||
const unsigned short *ptr;
|
||||
|
||||
if (!display_on)
|
||||
return;
|
||||
|
||||
if (x + width > LCD_WIDTH)
|
||||
width = LCD_WIDTH - x; /* Clip right */
|
||||
if (x < 0)
|
||||
width += x, x = 0; /* Clip left */
|
||||
if (width <= 0)
|
||||
return; /* nothing left to do */
|
||||
|
||||
ymax = y + height;
|
||||
if (ymax > LCD_HEIGHT)
|
||||
ymax = LCD_HEIGHT; /* Clip bottom */
|
||||
if (y < 0)
|
||||
y = 0; /* Clip top */
|
||||
if (y >= ymax)
|
||||
return; /* nothing left to do */
|
||||
|
||||
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
|
||||
/* Set start position and window */
|
||||
lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
|
||||
((x + width-1) << 8) | x);
|
||||
lcd_write_reg(R_VERT_RAM_ADDR_POS,
|
||||
((y_offset + y + height - 1) << 8) | (y_offset + y));
|
||||
lcd_write_reg(R_RAM_ADDR_SET, ((y + y_offset) << 8) | x);
|
||||
|
||||
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
||||
|
||||
ptr = (unsigned short *)&lcd_framebuffer[y][x];
|
||||
|
||||
do
|
||||
{
|
||||
lcd_write_data(ptr, width);
|
||||
ptr += LCD_WIDTH;
|
||||
}
|
||||
while (++y < ymax);
|
||||
} /* lcd_update_rect */
|
||||
Loading…
Add table
Add a link
Reference in a new issue