200 lines
6.2 KiB
C
200 lines
6.2 KiB
C
/****************************************************************************
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* configs/zkit-arm-1769/src/up_lcd.c
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* arch/arm/src/board/up_lcd.c
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*
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* Copyright (C) 2013 Zilogic Systems. All rights reserved.
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* Author: Manikandan <code@zilogic.com>
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*
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* Based on configs/lm3s6965-ek/src/up_oled.c
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*
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* Copyright (C) 2012 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 <stdbool.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/st7567.h>
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#include <nuttx/arch.h>
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#include "up_arch.h"
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#include "up_internal.h"
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#include "lpc17_gpio.h"
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#include "lpc17_ssp.h"
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#include "zkitarm_internal.h"
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#ifdef CONFIG_NX_LCDDRIVER
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Enables debug output from this file (needs CONFIG_DEBUG with
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* CONFIG_DEBUG_VERBOSE too)
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*/
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#undef LCD_DEBUG /* Define to enable debug */
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#undef LCD_VERBOSE /* Define to enable verbose debug */
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#ifdef LCD_DEBUG
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# define leddbg lldbg
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# ifdef LCD_VERBOSE
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# define ledvdbg lldbg
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# else
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# define ledvdbg(x...)
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# endif
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#else
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# undef LCD_VERBOSE
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# define leddbg(x...)
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# define ledvdbg(x...)
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#endif
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/****************************************************************************
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* Private Data
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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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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_lcdinitialize
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****************************************************************************/
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int up_lcdinitialize(void)
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{
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lpc17_configgpio(ZKITARM_OLED_RST);
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lpc17_configgpio(ZKITARM_OLED_RS);
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lpc17_gpiowrite(ZKITARM_OLED_RST, 1);
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lpc17_gpiowrite(ZKITARM_OLED_RS, 1);
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zkit_sspinitialize();
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spi = lpc17_sspinitialize(0);
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if (!spi)
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{
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glldbg("Failed to initialize SSP port 0\n");
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return 0;
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}
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lpc17_gpiowrite(ZKITARM_OLED_RST, 0);
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up_mdelay(1);
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lpc17_gpiowrite(ZKITARM_OLED_RST, 1);
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return 1;
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}
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/****************************************************************************
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* Name: up_lcdgetdev
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****************************************************************************/
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FAR struct lcd_dev_s *up_lcdgetdev(int lcddev)
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{
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dev = st7567_initialize(spi, lcddev);
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if (!dev)
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{
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glldbg("Failed to bind SSI port 0 to OLCD %d: %d\n", lcddev);
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}
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else
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{
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gllvdbg("Bound SSI port 0 to OLCD %d\n", lcddev);
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/* And turn the OLCD on (CONFIG_LCD_MAXPOWER should be 1) */
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(void)dev->setpower(dev, CONFIG_LCD_MAXPOWER);
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return dev;
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}
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return NULL;
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}
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/****************************************************************************
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* Name: up_lcduninitialize
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****************************************************************************/
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void up_lcduninitialize(void)
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{
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/* TO-FIX */
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}
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/******************************************************************************
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* Name: lpc17_spicmddata
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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/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_ssp0cmddata(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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lpc17_gpiowrite(ZKITARM_OLED_RS, !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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#endif /* CONFIG_ARCH_LCDS */
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