From 17af3884569007c61b2519d9e978992118cc96c0 Mon Sep 17 00:00:00 2001 From: Gregory Nutt Date: Mon, 20 Oct 2014 15:21:48 -0600 Subject: [PATCH] stm32f429i-disco: implements lcd initializing This enables the initializing of the lcd device connected on the stm32f429i-disco. The following methods are provided: - up_lcdinitialize - up_lcduninitialize - up_lcdgetdev The corresponding ili9341 lcd device in the nuttx driver section can be configured by Kconfig. Interface 0 is used by default. Signed-off-by: Marco Krahl --- configs/stm32f429i-disco/src/stm32_lcd.c | 169 +++++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 configs/stm32f429i-disco/src/stm32_lcd.c diff --git a/configs/stm32f429i-disco/src/stm32_lcd.c b/configs/stm32f429i-disco/src/stm32_lcd.c new file mode 100644 index 0000000000..704eae380c --- /dev/null +++ b/configs/stm32f429i-disco/src/stm32_lcd.c @@ -0,0 +1,169 @@ +/************************************************************************************ + * configs/stm32f429i-disco/src/stm32_lcd.c + * + * Copyright (C) 2014 Marco Krahl. All rights reserved. + * Author: Marco Krahl + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************************/ + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include + +#include +#include + +#include + +#include "up_arch.h" +#include "stm32f429i-disco.h" + +/************************************************************************************ + * Definitions + ************************************************************************************/ +#ifdef CONFIG_STM32F429I_DISCO_ILI9341_LCDDEVICE +# define ILI9341_LCD_DEVICE CONFIG_STM32F429I_DISCO_ILI9341_LCDDEVICE +#else +# define ILI9341_LCD_DEVICE 0 +#endif +/****************************************************************************** + * Private Data + ******************************************************************************/ + +FAR struct lcd_dev_s *g_lcd = NULL; + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +#ifdef CONFIG_STM32F429I_DISCO_ILI9341_LCDIFACE +/**************************************************************************** + * Name: up_lcduninitialize + * + * Description: + * Unitialize the LCD Device. + * + * Parameter: + * + * Return: + * + ***************************************************************************/ + +void up_lcduninitialize(void) +{ + /* Set display off */ + + g_lcd->setpower(g_lcd, 0); + + g_lcd = NULL; +} + + +/**************************************************************************** + * Name: up_lcdgetdev + * + * Description: + * Return a reference to the LCD object for the specified LCD Device. + * This allows support for multiple LCD devices. + * + * Parameter: + * lcddev - Number of the LDC Device. + * + * Return: + * Reference to the LCD object if exist otherwise NULL + * + ***************************************************************************/ + +FAR struct lcd_dev_s *up_lcdgetdev(int lcddev) +{ + if (lcddev == ILI9341_LCD_DEVICE) + { + return g_lcd; + } + + return NULL; +} + + +/**************************************************************************** + * Name: up_lcdinitialize + * + * Description: + * Initialize the LCD video hardware. The initial state of the LCD is + * fully initialized, display memory cleared, and the LCD ready to use, but + * with the power setting at 0 (full off). + * + * Parameter: + * + * Return: + * On success - Ok + * On error - Error Code + * + ****************************************************************************/ + +int up_lcdinitialize(void) +{ + /* check if always initialized */ + + if (!g_lcd) + { + /* Initialize the sub driver structure */ + + FAR struct ili9341_lcd_s *dev = stm32_ili93414ws_initialize(); + + /* Initialize public lcd driver structure */ + + if (dev) + { + /* + * Get a reference to valid lcd driver structure to avoid repeated + * initialization of the LCD Device. Also enables uninitializing of + * the LCD Device. + */ + + g_lcd = ili9341_initialize(dev, ILI9341_LCD_DEVICE); + + if (g_lcd) + { + return OK; + } + } + } + + return -errno; +} + +#endif