/****************************************************************************
 * boards/arm/tiva/lm3s6965-ek/src/lm3s6965-ek.h
 *
 *   Copyright (C) 2010 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.
 *
 ****************************************************************************/

#ifndef __BOARDS_ARM_TIVA_LM3S6965_EK_SRC_LM3S6965EK_H
#define __BOARDS_ARM_TIVA_LM3S6965_EK_SRC_LM3S6965EK_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#include <nuttx/compiler.h>

#include "chip.h"
#include "tiva_gpio.h"

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* How many SSI modules does this chip support? The LM3S6965 supports 1 SSI
 * module (others may support more than 2 -- in such case, the following must
 * be expanded).
 */

#if TIVA_NSSI == 0
#  undef CONFIG_TIVA_SSI0
#  undef CONFIG_TIVA_SSI1
#elif TIVA_NSSI == 1
#  undef CONFIG_TIVA_SSI1
#endif

/* LM3S6965 Eval Kit ********************************************************/

/* GPIO Usage
 *
 * PIN SIGNAL      EVB Function
 * --- ----------- ---------------------------------------
 *  26 PA0/U0RX    Virtual COM port receive
 *  27 PA1/U0TX    Virtual COM port transmit
 *  10 PD0/IDX0    SD card chip select
 *  11 PD1/PWM1    Sound
 *  30 PA4/SSI0RX  SD card data out
 *  31 PA5/SSI0TX  SD card and OLED display data in
 *  28 PA2/SSI0CLK SD card and OLED display clock
 *  22 PC7/PHB0    OLED display data/control select
 *  29 PA3/SSI0FSS OLED display chip select
 *  73 PE1/PWM5    Down switch
 *  74 PE2/PHB1    Left switch
 *  72 PE0/PWM4    Up switch
 *  75 PE3/PHA1    Right switch
 *  61 PF1/IDX1    Select switch
 *  47 PF0/PWM0    User LED
 *  23 PC6/CCP3    Enable +15 V
 */

/* GPIO for microSD card chip select:
 * - PD0: SD card chip select (CARDCSn)
 */

#define SDCCS_GPIO  (GPIO_FUNC_OUTPUT | GPIO_PADTYPE_STDWPU | GPIO_STRENGTH_4MA | \
                     GPIO_VALUE_ONE | GPIO_PORTD | 0)

/* GPIO for single LED:
 * - PF0: User LED
 */

#define LED_GPIO    (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTF | 0)

/* GPIOs for OLED:
 *  - PC7: OLED display data/control select (D/Cn)
 *  - PA3: OLED display chip select (CSn)
 *  - PC6: Enable +15V needed by OLED (EN+15V)
 */

#define OLEDDC_GPIO (GPIO_FUNC_OUTPUT | GPIO_PADTYPE_STD | GPIO_STRENGTH_8MA | \
                     GPIO_VALUE_ONE | GPIO_PORTC | 7)
#define OLEDCS_GPIO (GPIO_FUNC_OUTPUT | GPIO_PADTYPE_STDWPU | GPIO_STRENGTH_4MA | \
                     GPIO_VALUE_ONE | GPIO_PORTA | 3)
#define OLEDEN_GPIO (GPIO_FUNC_OUTPUT | GPIO_PADTYPE_STD | GPIO_STRENGTH_8MA | \
                     GPIO_VALUE_ONE | GPIO_PORTC | 6)

/* procfs File System */

#ifdef CONFIG_FS_PROCFS
#  ifdef CONFIG_NSH_PROC_MOUNTPOINT
#    define LM_PROCFS_MOUNTPOINT CONFIG_NSH_PROC_MOUNTPOINT
#  else
#    define LM_PROCFS_MOUNTPOINT "/proc"
#  endif
#endif

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

#ifndef __ASSEMBLY__

/****************************************************************************
 * Name: lm_bringup
 *
 * Description:
 *   Bring up board features
 *
 ****************************************************************************/

int lm_bringup(void);

/****************************************************************************
 * Name: lm_ssidev_initialize
 *
 * Description:
 *   Called to configure SPI chip select GPIO pins for the LM3S6965 Eval Kit.
 *
 ****************************************************************************/

void weak_function lm_ssidev_initialize(void);

#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_TIVA_LM3S6965_EK_SRC_LM3S6965EK_H */