text: /**
   * \file
   *
   * \brief SAM4S-EK board init.
   *
   * Copyright (c) 2011 - 2012 Atmel Corporation. All rights reserved.
   *
   * \asf_license_start
   *
   * 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. The name of Atmel may not be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * 4. This software may only be redistributed and used in connection with an
   *    Atmel microcontroller product.
   *
   * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
   * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
   *
   * \asf_license_stop
   *
   */
  
  #include "compiler.h"
  #include "board.h"
  #include "conf_board.h"
  #include "gpio.h"
  
  void board_init(void)
  {
  #ifndef CONF_BOARD_KEEP_WATCHDOG_AT_INIT 
  	/* Disable the watchdog */
  	WDT->WDT_MR = WDT_MR_WDDIS;
  #endif
  
  	/* Configure LED pins */
  	gpio_configure_pin(LED0_GPIO, LED0_FLAGS);
  	gpio_configure_pin(LED1_GPIO, LED1_FLAGS);
  	
  	/* Configure Push Button pins */
  	gpio_configure_pin(GPIO_PUSH_BUTTON_1, GPIO_PUSH_BUTTON_1_FLAGS);
  	gpio_configure_pin(GPIO_PUSH_BUTTON_2, GPIO_PUSH_BUTTON_2_FLAGS);
  	
  #ifdef CONF_BOARD_UART_CONSOLE
  	/* Configure UART pins */
  	gpio_configure_group(PINS_UART_PIO, PINS_UART, PINS_UART_FLAGS);
  #endif
  
  	/* Configure ADC example pins */
  #ifdef CONF_BOARD_ADC
  	/* TC TIOA configuration */
  	gpio_configure_pin(PIN_TC0_TIOA0,PIN_TC0_TIOA0_FLAGS);
  
  	/* ADC Trigger configuration */
  	gpio_configure_pin(PINS_ADC_TRIG, PINS_ADC_TRIG_FLAG);
  
  	/* PWMH0 configuration */
  	gpio_configure_pin(PIN_PWMC_PWMH0_TRIG, PIN_PWMC_PWMH0_TRIG_FLAG);
  #endif
  
  #ifdef CONF_BOARD_PWM_LED0
  	/* Configure PWM LED0 pin */
  	gpio_configure_pin(PIN_PWM_LED0_GPIO, PIN_PWM_LED0_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_PWM_LED1
  	/* Configure PWM LED1 pin */
  	gpio_configure_pin(PIN_PWM_LED1_GPIO, PIN_PWM_LED1_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_PWM_LED2
  	/* Configure PWM LED2 pin */
  	gpio_configure_pin(PIN_PWM_LED2_GPIO, PIN_PWM_LED2_FLAGS);
  #endif
  
  	/* Configure SPI pins */
  #ifdef CONF_BOARD_SPI
  	gpio_configure_pin(SPI_MISO_GPIO, SPI_MISO_FLAGS);
  	gpio_configure_pin(SPI_MOSI_GPIO, SPI_MOSI_FLAGS);
  	gpio_configure_pin(SPI_SPCK_GPIO, SPI_SPCK_FLAGS);
  	
  	/**
  	 * For NPCS 1, 2, and 3, different PINs can be used to access the same NPCS line.
  	 * Depending on the application requirements, the default PIN may not be available. 
  	 * Hence a different PIN should be selected using the CONF_BOARD_SPI_NPCS_GPIO and 
  	 * CONF_BOARD_SPI_NPCS_FLAGS macros.
  	 */
  	
  	#ifdef CONF_BOARD_SPI_NPCS0
  		gpio_configure_pin(SPI_NPCS0_GPIO, SPI_NPCS0_FLAGS);
  	#endif
  
  	#ifdef CONF_BOARD_SPI_NPCS1
  		#if defined(CONF_BOARD_SPI_NPCS1_GPIO) && defined(CONF_BOARD_SPI_NPCS1_FLAGS)
  			gpio_configure_pin(CONF_BOARD_SPI_NPCS1_GPIO, CONF_BOARD_SPI_NPCS1_FLAGS);
  		#else
  			gpio_configure_pin(SPI_NPCS1_PA31_GPIO, SPI_NPCS1_PA31_FLAGS);
  		#endif
  	#endif
  
  	#ifdef CONF_BOARD_SPI_NPCS2
  		#if defined(CONF_BOARD_SPI_NPCS2_GPIO) && defined(CONF_BOARD_SPI_NPCS2_FLAGS)
  			gpio_configure_pin(CONF_BOARD_SPI_NPCS2_GPIO, CONF_BOARD_SPI_NPCS2_FLAGS);
  		#else
  			gpio_configure_pin(SPI_NPCS2_PA30_GPIO, SPI_NPCS2_PA30_FLAGS);
  		#endif
  	#endif
  
  	#ifdef CONF_BOARD_SPI_NPCS3
  		#if defined(CONF_BOARD_SPI_NPCS3_GPIO) && defined(CONF_BOARD_SPI_NPCS3_FLAGS)
  			gpio_configure_pin(CONF_BOARD_SPI_NPCS3_GPIO, CONF_BOARD_SPI_NPCS3_FLAGS);
  		#else
  			gpio_configure_pin(SPI_NPCS3_PA22_GPIO, SPI_NPCS3_PA22_FLAGS);
  		#endif
  	#endif
  #endif
  
  #ifdef CONF_BOARD_USART_RXD
  	/* Configure USART RXD pin */
  	gpio_configure_pin(PIN_USART1_RXD_IDX, PIN_USART1_RXD_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_USART_TXD
  	/* Configure USART TXD pin */
  	gpio_configure_pin(PIN_USART1_TXD_IDX, PIN_USART1_TXD_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_USART_CTS
  	/* Configure USART CTS pin */
  	gpio_configure_pin(PIN_USART1_CTS_IDX, PIN_USART1_CTS_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_USART_RTS
  	/* Configure USART RTS pin */
  	gpio_configure_pin(PIN_USART1_RTS_IDX, PIN_USART1_RTS_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_USART_SCK
  	/* Configure USART synchronous communication SCK pin */
  	gpio_configure_pin(PIN_USART1_SCK_IDX, PIN_USART1_SCK_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_ADM3312_EN
  	/* Configure ADM33312 enable pin */
  	gpio_configure_pin(PIN_USART1_EN_IDX, PIN_USART1_EN_FLAGS);
  	gpio_set_pin_low(PIN_USART1_EN_IDX);
  #endif
  
  #ifdef CONF_BOARD_TFDU4300_SD
  	/* Configure IrDA transceiver shutdown pin */
  	gpio_configure_pin(PIN_IRDA_SD_IDX, PIN_IRDA_SD_FLAGS);
  	gpio_set_pin_low(PIN_IRDA_SD_IDX);
  #endif
  
  #ifdef CONF_BOARD_ADM3485_RE
  	/* Configure RS485 transceiver RE pin */
      gpio_configure_pin(PIN_RE_IDX, PIN_RE_FLAGS);
  	gpio_set_pin_low(PIN_RE_IDX);
  #endif
  
  #ifdef CONF_BOARD_ILI9325
  	/* Configure LCD EBI pins */
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D0, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D1, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D2, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D3, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D4, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D5, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D6, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_DATA_BUS_D7, PIN_EBI_DATA_BUS_FLAGS);
  	gpio_configure_pin(PIN_EBI_NRD, PIN_EBI_NRD_FLAGS);
  	gpio_configure_pin(PIN_EBI_NWE, PIN_EBI_NWE_FLAGS);
  	gpio_configure_pin(PIN_EBI_NCS1, PIN_EBI_NCS1_FLAGS);
  	gpio_configure_pin(PIN_EBI_LCD_RS, PIN_EBI_LCD_RS_FLAGS);
  #endif
  
  #ifdef CONF_BOARD_AAT3155
  	/* Configure Backlight control pin */
  	gpio_configure_pin(BOARD_BACKLIGHT, BOARD_BACKLIGHT_FLAG);
  #endif
  
  #ifdef CONF_BOARD_ADS7843
  	/* Configure Touchscreen SPI pins */
  	gpio_configure_pin(PIN_TSC_IRQ_IDX,PIN_TSC_IRQ_FLAG);
  	gpio_configure_pin(SPI_MISO_GPIO, SPI_MISO_FLAGS);
  	gpio_configure_pin(SPI_MOSI_GPIO, SPI_MOSI_FLAGS);
  	gpio_configure_pin(SPI_SPCK_GPIO, SPI_SPCK_FLAGS);
  	gpio_configure_pin(SPI_NPCS0_GPIO, SPI_NPCS0_FLAGS);
  	gpio_configure_pin(PIN_TSC_BUSY_IDX, PIN_TSC_BUSY_FLAG);
  #endif
  }
  