init.c

#include "conf_board.h"
#include "board.h"
#include "gpio.h"



#if defined (CONF_BOARD_AT45DBX)
#   define AT45DBX_MEM_CNT          1
#endif



void board_init (void)
{
    gpio_configure_pin(LED0_GPIO, GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
    gpio_configure_pin(LED1_GPIO, GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
    gpio_configure_pin(LED2_GPIO, GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
    gpio_configure_pin(LED3_GPIO, GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);

    gpio_configure_pin(GPIO_PUSH_BUTTON_0, (GPIO_DIR_INPUT | GPIO_PULL_UP));

#if defined(CONF_BOARD_TWI)
    /* TWI Master GPIO pin configuration. */
    const gpio_map_t TWI_GPIO_MAP =
        {
            {TWIMS0_TWD_PIN,  TWIMS0_TWD_FUNCTION  },
            {TWIMS0_TWCK_PIN, TWIMS0_TWCK_FUNCTION }
        };
    gpio_enable_module(TWI_GPIO_MAP,
        sizeof(TWI_GPIO_MAP) / sizeof(TWI_GPIO_MAP[0]));
#endif

#if defined(CONF_BOARD_COM_PORT)
    /* USART GPIO pin configuration. */
    static const gpio_map_t COMPORT_GPIO_MAP =
        {
            {USART_RXD_PIN, USART_RXD_FUNCTION },
            {USART_TXD_PIN, USART_TXD_FUNCTION }
        };
    gpio_enable_module(COMPORT_GPIO_MAP,
            sizeof(COMPORT_GPIO_MAP) / sizeof(COMPORT_GPIO_MAP[0]));
#endif

//#if defined(CONF_BOARD_ENABLE_MXT143E_XPLAINED)
    ///* MXT143E GPIO pin configuration. */
    //static const gpio_map_t MXT143E_GPIO_MAP =
        //{
            //{MXT143E_XPLAINED_SCK,  MXT143E_XPLAINED_SCK_FUNCTION  },
            //{MXT143E_XPLAINED_MOSI, MXT143E_XPLAINED_MOSI_FUNCTION },
            //{MXT143E_XPLAINED_MISO, MXT143E_XPLAINED_MISO_FUNCTION },
        //};
    //gpio_enable_module(MXT143E_GPIO_MAP,
            //sizeof(MXT143E_GPIO_MAP) / sizeof(MXT143E_GPIO_MAP[0]));
            //
    //gpio_configure_pin(MXT143E_XPLAINED_CS, GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
    //gpio_configure_pin(MXT143E_XPLAINED_CHG, GPIO_DIR_INPUT);
    //gpio_configure_pin(MXT143E_XPLAINED_DC, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
    //#ifndef MXT143E_XPLAINED_BACKLIGHT_DISABLE
    //gpio_configure_pin(MXT143E_XPLAINED_BACKLIGHT, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
    //#endif
    //gpio_configure_pin(MXT143E_XPLAINED_LCD_RESET, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
//#endif

    static const gpio_map_t spi1_gpio_map = {
        {HeaderJ1_SPI_SCK_PIN, HeaderJ1_SPI_SCK_FUNCTION},        //SCK
        {HeaderJ1_SPI_MISO_PIN, HeaderJ1_SPI_MISO_FUNCTION}, //MISO
        {HeaderJ1_SPI_MOSI_PIN, HeaderJ1_SPI_MOSI_FUNCTION}, //MOSI
        {HeaderJ1_SPI_NPCS0_PIN, HeaderJ1_SPI_NPCS0_FUNCTION}, //SS
        {HeaderJ1_SPI_NPCS1_PIN, HeaderJ1_SPI_NPCS1_FUNCTION}, //SS
        {HeaderJ1_SPI_NPCS2_PIN, HeaderJ1_SPI_NPCS2_FUNCTION}, //SS
        {HeaderJ1_SPI_NPCS3_PIN, HeaderJ1_SPI_NPCS3_FUNCTION}}; //SS
        gpio_enable_module(spi1_gpio_map,sizeof(spi1_gpio_map)/sizeof(spi1_gpio_map[0]));

#if defined(SENSORS_XPLAINED_BOARD)
    /* Configure the Xplained Sensor extension board, if any, after
     * the platform Xplained board has configured basic clock settings,
     * GPIO pin mapping, interrupt controller options, etc.
     */
    sensor_board_init();
#endif

//##xxx## bedeutet wohl, das etwas zum Variablennamen dazu geschrieben wird, in diesem Fall die Nummer
#if defined (CONF_BOARD_AT45DBX)
    static const gpio_map_t AT45DBX_SPI_GPIO_MAP = {
        {AT45DBX_SPI_SCK_PIN,  AT45DBX_SPI_SCK_FUNCTION },
        {AT45DBX_SPI_MISO_PIN, AT45DBX_SPI_MISO_FUNCTION},
        {AT45DBX_SPI_MOSI_PIN, AT45DBX_SPI_MOSI_FUNCTION},
            // \ (backslash) bedeutet Zeilenfortsetzung in der nächsten Zeile
# define AT45DBX_ENABLE_NPCS_PIN(NPCS, unused) \
    {AT45DBX_SPI_NPCS##NPCS##_PIN, AT45DBX_SPI_NPCS##NPCS##_FUNCTION},
    MREPEAT(AT45DBX_MEM_CNT, AT45DBX_ENABLE_NPCS_PIN, ~)
# undef AT45DBX_ENABLE_NPCS_PIN
    };
    gpio_enable_module(AT45DBX_SPI_GPIO_MAP,
            sizeof(AT45DBX_SPI_GPIO_MAP) / sizeof(AT45DBX_SPI_GPIO_MAP[0]));
#endif

#if defined (CONF_BOARD_SD_MMC_MCI)
    static const gpio_map_t SD_MMC_MCI_GPIO_MAP = {
        {SD_SLOT_8BITS_CLK_PIN, SD_SLOT_8BITS_CLK_FUNCTION},
        {SD_SLOT_8BITS_CMD_PIN, SD_SLOT_8BITS_CMD_FUNCTION},
        {SD_SLOT_8BITS_DATA0_PIN, SD_SLOT_8BITS_DATA0_FUNCTION},
        {SD_SLOT_8BITS_DATA1_PIN, SD_SLOT_8BITS_DATA1_FUNCTION},
        {SD_SLOT_8BITS_DATA2_PIN, SD_SLOT_8BITS_DATA2_FUNCTION},
        {SD_SLOT_8BITS_DATA3_PIN, SD_SLOT_8BITS_DATA3_FUNCTION},
        {SD_SLOT_8BITS_DATA4_PIN, SD_SLOT_8BITS_DATA4_FUNCTION},
        {SD_SLOT_8BITS_DATA5_PIN, SD_SLOT_8BITS_DATA5_FUNCTION},
        {SD_SLOT_8BITS_DATA6_PIN, SD_SLOT_8BITS_DATA6_FUNCTION},
        {SD_SLOT_8BITS_DATA7_PIN, SD_SLOT_8BITS_DATA7_FUNCTION},
    };
    gpio_enable_module(SD_MMC_MCI_GPIO_MAP,
            sizeof(SD_MMC_MCI_GPIO_MAP) / sizeof(SD_MMC_MCI_GPIO_MAP[0]));
    gpio_enable_pin_pull_up(SD_SLOT_8BITS_CARD_DETECT);
    gpio_enable_pin_pull_up(SD_SLOT_8BITS_WRITE_PROTECT);
#endif

}