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/** @defgroup ltdc_file LTDC peripheral API
*
* @ingroup peripheral_apis
*
* @version 1.0.0
*
* @author @htmlonly © @endhtmlonly 2014
* Oliver Meier <h2obrain@gmail.com>
*
* @date 5 December 2014
*
* This library supports the LCD controller (LTDC) in the STM32F4xx and
* STM32F7xx series of ARM Cortex Microcontrollers by ST Microelectronics.
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2014 Oliver Meier <h2obrain@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**@{*/
#include <libopencm3/stm32/common/ltdc_common_f47.h>
void ltdc_set_tft_sync_timings(uint16_t sync_width, uint16_t sync_height,
uint16_t h_back_porch, uint16_t v_back_porch,
uint16_t active_width, uint16_t active_height,
uint16_t h_front_porch, uint16_t v_front_porch)
{
/*assert((active_width <= 0x400) && (active_height <= 0x300));*/
uint16_t w, h;
w = sync_width - 1;
h = sync_height - 1;
/*assert((w&0xfff == w) && (h&0x7ff == h));*/
LTDC_SSCR = (w << 16) | (h << 0);
w += h_back_porch;
h += v_back_porch;
/*assert((w&0xfff == w) && (h&0x7ff == h));*/
LTDC_BPCR = (w << 16) | (h << 0);
w += active_width;
h += active_height;
/*assert((w&0xfff == w) && (h&0x7ff == h));*/
LTDC_AWCR = (w << 16) | (h << 0);
w += h_front_porch;
h += v_front_porch;
/*assert((w&0xfff == w) && (h&0x7ff == h));*/
LTDC_TWCR = (w << 16) | (h << 0);
}
void ltdc_setup_windowing(uint8_t layer_number,
uint16_t h_back_porch, uint16_t v_back_porch,
uint16_t active_width, uint16_t active_height)
{
active_width += h_back_porch - 1;
active_height += v_back_porch - 1;
/*assert((h_back_porch & 0xfff == h_back_porch) &&
(v_back_porch & 0xfff == v_back_porch) &&
(active_width & 0xfff == active_width) &&
(active_height & 0xfff == active_height));*/
LTDC_LxWHPCR(layer_number) = (active_width << 16) |
(h_back_porch << 0);
LTDC_LxWVPCR(layer_number) = (active_height << 16) |
(v_back_porch << 0);
}
/**@}*/
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