/****************************************************************************
* config/stm32f4discovery/src/up_ug2864hsweg01.c
* arch/arm/src/board/up_ug2864hsweg01.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <nuttx/config.h>
#include <debug.h>
#include <nuttx/spi/spi.h>
#include <nuttx/lcd/lcd.h>
#include <nuttx/lcd/ssd1306.h>
#include "stm32_gpio.h"
#include "stm32f4discovery-internal.h"
#ifdef CONFIG_LCD_UG2864HSWEG01
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* The pin configurations here require that SPI1 is selected */
#ifndef CONFIG_STM32_SPI1
# error "The OLED driver requires CONFIG_STM32_SPI1 in the configuration"
#endif
#ifndef CONFIG_SPI_CMDDATA
# error "The OLED driver requires CONFIG_SPI_CMDDATA in the configuration"
#endif
/* Pin Configuration ********************************************************/
/* UG-2864HSWEG01 OLED Display (SPI 4-wire):
*
* --------------------------+----------------------------------------------
* Connector CON10 J1: | STM32F4Discovery
* --------------+-----------+----------------------------------------------
* CON10 J1: | CON20 J2: | P1/P2:
* --------------+-----------+----------------------------------------------
* 1 3v3 | 3,4 3v3 | P2 3V
* 3 /RESET | 8 /RESET | P2 PB6 (Arbitrary selection)
* 5 /CS | 7 /CS | P2 PB7 (Arbitrary selection)(2)
* 7 D/C | 9 D/C | P2 PB8 (Arbitrary selection)(2)
* 9 LED+ (N/C) | ----- | -----
* 2 5V Vcc | 1,2 Vcc | P2 5V
* 4 DI | 18 D1/SI | P1 PA7 (GPIO_SPI1_MOSI == GPIO_SPI1_MOSI_1 (1))
* 6 SCLK | 19 D0/SCL | P1 PA5 (GPIO_SPI1_SCK == GPIO_SPI1_SCK_1 (2))
* 8 LED- (N/C) | ----- | ------
* 10 GND | 20 GND | P2 GND
* --------------+-----------+----------------------------------------------
* (1) Required because of on-board MEMS
* (2) Note that the OLED CS and D/C are managed in the up_spi.c file.
* -------------------------------------------------------------------------
*/
/* Definitions in stm32f4discovery-internal.h */
/* Debug ********************************************************************/
#ifdef CONFIG_DEBUG_LCD
# define lcddbg(format, arg...) dbg(format, ##arg)
# define lcdvdbg(format, arg...) vdbg(format, ##arg)
#else
# define lcddbg(x...)
# define lcdvdbg(x...)
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_nxdrvinit
*
* Description:
* Called by NX initialization logic to configure the OLED.
*
****************************************************************************/
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno)
{
FAR struct spi_dev_s *spi;
FAR struct lcd_dev_s *dev;
/* Configure the OLED GPIOs. This initial configuration is RESET low,
* putting the OLED into reset state.
*/
(void)stm32_configgpio(GPIO_OLED_RESET);
/* Wait a bit then release the OLED from the reset state */
up_mdelay(20);
stm32_gpiowrite(GPIO_OLED_RESET, true);
/* Get the SPI1 port interface */
spi = up_spiinitialize(1);
if (!spi)
{
lcddbg("Failed to initialize SPI port 1\n");
}
else
{
/* Bind the SPI port to the OLED */
dev = ssd1306_initialize(spi, devno);
if (!dev)
{
lcddbg("Failed to bind SPI port 1 to OLED %d: %d\n", devno);
}
else
{
lcdvdbg("Bound SPI port 1 to OLED %d\n", devno);
/* And turn the OLED on */
(void)dev->setpower(dev, CONFIG_LCD_MAXPOWER);
return dev;
}
}
return NULL;
}
#endif /* CONFIG_LCD_UG2864AMBAG01 */
