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/****************************************************************************
* config/lpcxpresso-lpc1768/src/up_oled.c
* arch/arm/src/board/up_oled.c
*
* Copyright (C) 2011, 2013 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 <stdio.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/spi.h>
#include <nuttx/lcd/lcd.h>
#include <nuttx/lcd/ug-9664hswag01.h>
#include "lpc17_gpio.h"
#include "lpc17_ssp.h"
#include "lpcxpresso_internal.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* This module is only built if CONFIG_NX_LCDDRIVER is selected. In this
* case, it would be an error if SSP1 is not also enabled.
*/
#ifndef CONFIG_LPC17_SSP1
# error "The OLED driver requires CONFIG_LPC17_SSP1 in the configuration"
#endif
#ifndef CONFIG_UG9664HSWAG01_POWER
# error "This logic requires CONFIG_UG9664HSWAG01_POWER in the configuration"
#endif
/* Debug ********************************************************************/
/* Define the CONFIG_DEBUG_LCD to enable detailed debug output (stuff you
* would never want to see unless you are debugging this file).
*
* Verbose debug must also be enabled
*/
#ifndef CONFIG_DEBUG
# undef CONFIG_DEBUG_VERBOSE
# undef CONFIG_DEBUG_GRAPHICS
#endif
#ifndef CONFIG_DEBUG_VERBOSE
# undef CONFIG_DEBUG_LCD
#endif
#ifdef CONFIG_DEBUG_LCD
# define ugdbg(format, arg...) vdbg(format, ##arg)
# define oleddc_dumpgpio(m) lpc17_dumpgpio(LPCXPRESSO_OLED_POWER, m)
# define oledcs_dumpgpio(m) lpc17_dumpgpio(LPCXPRESSO_OLED_CS, m)
#else
# define ugdbg(x...)
# define oleddc_dumpgpio(m)
# define oledcs_dumpgpio(m)
#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. For the SPI interface, insert jumpers in J42,
* J43, J45 pin1-2 and J46 pin 1-2.
*/
oledcs_dumpgpio("up_nxdrvinit: After OLED CS setup");
oleddc_dumpgpio("up_nxdrvinit: On entry");
(void)lpc17_configgpio(LPCXPRESSO_OLED_POWER); /* OLED 11V power */
(void)lpc17_configgpio(LPCXPRESSO_OLED_DC); /* OLED Command/Data */
oleddc_dumpgpio("up_nxdrvinit: After OLED Power/DC setup");
/* Get the SPI1 port (configure as a Freescale SPI port) */
spi = lpc17_sspinitialize(1);
if (!spi)
{
glldbg("Failed to initialize SPI port 1\n");
}
else
{
/* Bind the SPI port to the OLED */
dev = ug_initialize(spi, devno);
if (!dev)
{
glldbg("Failed to bind SPI port 1 to OLED %d: %d\n", devno);
}
else
{
gllvdbg("Bound SPI port 1 to OLED %d\n", devno);
/* And turn the OLED on (dim) */
(void)dev->setpower(dev, UG_POWER_DIM);
return dev;
}
}
return NULL;
}
/****************************************************************************
* Name: lpc17_ssp1cmddata
*
* Description:
* Set or clear the SD1329 D/Cn bit to select data (true) or command
* (false). This function must be provided by platform-specific logic.
* This is an implementation of the cmddata method of the SPI
* interface defined by struct spi_ops_s (see include/nuttx/spi.h).
*
* Input Parameters:
*
* spi - SPI device that controls the bus the device that requires the CMD/
* DATA selection.
* devid - If there are multiple devices on the bus, this selects which one
* to select cmd or data. NOTE: This design restricts, for example,
* one one SPI display per SPI bus.
* cmd - true: select command; false: select data
*
* Returned Value:
* None
*
****************************************************************************/
int lpc17_ssp1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
{
if (devid == SPIDEV_DISPLAY)
{
/* Set GPIO to 1 for data, 0 for command */
(void)lpc17_gpiowrite(LPCXPRESSO_OLED_DC, !cmd);
return OK;
}
return -ENODEV;
}
/****************************************************************************
* Name: ug_power
*
* Description:
* If the hardware supports a controllable OLED a power supply, this
* interface should be provided. It may be called by the driver to turn
* the OLED power on and off as needed.
*
* Input Parameters:
*
* devno - A value in the range of 0 throuh CONFIG_UG9664HSWAG01_NINTERFACES-1.
* This allows support for multiple OLED devices.
* on - true:turn power on, false: turn power off.
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_UG9664HSWAG01_POWER
void ug_power(unsigned int devno, bool on)
{
gllvdbg("power %s\n", on ? "ON" : "OFF");
(void)lpc17_gpiowrite(LPCXPRESSO_OLED_POWER, on);
}
#endif
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