f25f2a4856
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5321 42af7a65-404d-4744-a932-0658087f49c3
215 lines
7.0 KiB
C
215 lines
7.0 KiB
C
/****************************************************************************
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* config/lpcxpresso-lpc1768/src/up_oled.c
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* arch/arm/src/board/up_oled.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/spi.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/ug-9664hswag01.h>
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#include "lpc17_internal.h"
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#include "lpcxpresso_internal.h"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* This module is only built if CONFIG_NX_LCDDRIVER is selected. In this
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* case, it would be an error if SSP1 is not also enabled.
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*/
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#ifndef CONFIG_LPC17_SSP1
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# error "The OLED driver requires CONFIG_LPC17_SSP1 in the configuration"
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#endif
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#ifndef CONFIG_UG9664HSWAG01_POWER
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# error "This logic requires CONFIG_UG9664HSWAG01_POWER in the configuration"
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#endif
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/* Debug ********************************************************************/
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/* Define the CONFIG_DEBUG_LCD to enable detailed debug output (stuff you
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* would never want to see unless you are debugging this file).
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*
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* Verbose debug must also be enabled
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*/
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#ifndef CONFIG_DEBUG
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# undef CONFIG_DEBUG_VERBOSE
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# undef CONFIG_DEBUG_GRAPHICS
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#endif
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#ifndef CONFIG_DEBUG_VERBOSE
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# undef CONFIG_DEBUG_LCD
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#endif
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#ifdef CONFIG_DEBUG_LCD
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# define ugdbg(format, arg...) vdbg(format, ##arg)
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# define oleddc_dumpgpio(m) lpc17_dumpgpio(LPCXPRESSO_OLED_POWER, m)
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# define oledcs_dumpgpio(m) lpc17_dumpgpio(LPCXPRESSO_OLED_CS, m)
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#else
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# define ugdbg(x...)
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# define oleddc_dumpgpio(m)
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# define oledcs_dumpgpio(m)
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_nxdrvinit
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*
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* Description:
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* Called by NX initialization logic to configure the OLED.
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*
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****************************************************************************/
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FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno)
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{
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FAR struct spi_dev_s *spi;
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FAR struct lcd_dev_s *dev;
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/* Configure the OLED GPIOs. For the SPI interface, insert jumpers in J42,
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* J43, J45 pin1-2 and J46 pin 1-2.
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*/
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oledcs_dumpgpio("up_nxdrvinit: After OLED CS setup");
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oleddc_dumpgpio("up_nxdrvinit: On entry");
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(void)lpc17_configgpio(LPCXPRESSO_OLED_POWER); /* OLED 11V power */
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(void)lpc17_configgpio(LPCXPRESSO_OLED_DC); /* OLED Command/Data */
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oleddc_dumpgpio("up_nxdrvinit: After OLED Power/DC setup");
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/* Get the SSI port (configure as a Freescale SPI port) */
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spi = up_spiinitialize(1);
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if (!spi)
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{
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glldbg("Failed to initialize SSI port 1\n");
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}
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else
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{
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/* Bind the SSI port to the OLED */
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dev = ug_initialize(spi, devno);
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if (!dev)
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{
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glldbg("Failed to bind SSI port 1 to OLED %d: %d\n", devno);
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}
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else
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{
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gllvdbg("Bound SSI port 1 to OLED %d\n", devno);
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/* And turn the OLED on (dim) */
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(void)dev->setpower(dev, UG_POWER_DIM);
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return dev;
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}
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}
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return NULL;
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}
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/****************************************************************************
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* Name: lpc17_ssp1cmddata
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*
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* Description:
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* Set or clear the SD1329 D/Cn bit to select data (true) or command
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* (false). This function must be provided by platform-specific logic.
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* This is an implementation of the cmddata method of the SPI
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* interface defined by struct spi_ops_s (see include/nuttx/spi.h).
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*
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* Input Parameters:
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*
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* spi - SPI device that controls the bus the device that requires the CMD/
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* DATA selection.
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* devid - If there are multiple devices on the bus, this selects which one
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* to select cmd or data. NOTE: This design restricts, for example,
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* one one SPI display per SPI bus.
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* cmd - true: select command; false: select data
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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int lpc17_ssp1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
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{
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if (devid == SPIDEV_DISPLAY)
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{
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/* Set GPIO to 1 for data, 0 for command */
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(void)lpc17_gpiowrite(LPCXPRESSO_OLED_DC, !cmd);
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return OK;
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}
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return -ENODEV;
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}
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/****************************************************************************
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* Name: ug_power
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*
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* Description:
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* If the hardware supports a controllable OLED a power supply, this
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* interface should be provided. It may be called by the driver to turn
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* the OLED power on and off as needed.
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*
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* Input Parameters:
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*
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* devno - A value in the range of 0 throuh CONFIG_UG9664HSWAG01_NINTERFACES-1.
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* This allows support for multiple OLED devices.
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* on - true:turn power on, false: turn power off.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_UG9664HSWAG01_POWER
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void ug_power(unsigned int devno, bool on)
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{
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gllvdbg("power %s\n", on ? "ON" : "OFF");
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(void)lpc17_gpiowrite(LPCXPRESSO_OLED_POWER, on);
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}
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#endif
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