sd_raw_config.h

AVR单片机上跑的MMC卡加FAT16文件系统的例程

#ifndef SD_RAW_CONFIG_H
#define SD_RAW_CONFIG_H

/**
 * \addtogroup sd_raw
 *
 * @{
 */
/**
 * \file
 * MMC/SD support configuration.
 */

/**
 * \ingroup sd_raw_config
 * Controls MMC/SD write support.
 *
 * Set to 1 to enable MMC/SD write support, set to 0 to disable it.
 */
#define SD_RAW_WRITE_SUPPORT 0

/**
 * \ingroup sd_raw_config
 * Controls MMC/SD access buffering.
 * 
 * Set to 1 to save static RAM, but be aware that you will
 * lose performance.
 *
 * \note When SD_RAW_WRITE_SUPPORT is 1, SD_RAW_SAVE_RAM will
 *       be reset to 0.
 */
#define SD_RAW_SAVE_RAM 1

/* defines for customisation of sd/mmc port access */
/*
#define configure_pin_available() DDRC &= ~(1 << DDC4)
#define configure_pin_locked() DDRC &= ~(1 << DDC5)
#define configure_pin_mosi() DDRB |= (1 << DDB3)
#define configure_pin_sck() DDRB |= (1 << DDB5)
#define configure_pin_ss() DDRB |= (1 << DDB2)
#define configure_pin_miso() DDRB &= ~(1 << DDB4)

#define get_pin_available() ((PINC >> PC4) & 0x01)
#define get_pin_locked() ((PINC >> PC5) & 0x01)

#define select_card() PORTC &= ~(1 << PB2)
#define unselect_card() PORTC |= (1 << PB2)
*/

#define configure_pin_available() DDRB &= ~(1 << DDB2)
#define configure_pin_locked() DDRB &= ~(1 << DDB3)
#define configure_pin_mosi() DDRB |= (1 << DDB5)
#define configure_pin_sck() DDRB |= (1 << DDB7)
#define configure_pin_ss() DDRB |= (1 << DDB4)
#define configure_pin_miso() DDRB &= ~(1 << DDB6)

#define get_pin_available() ((PINB >> PB2) & 0x01)
#define get_pin_locked() ((PINB >> PB3) & 0x01)

#define select_card() PORTB &= ~(1 << PB4)
#define unselect_card() PORTB |= (1 << PB4)

/**
 * @}
 */

/* configuration checks */
#if SD_RAW_WRITE_SUPPORT
#undef SD_RAW_SAVE_RAM
#define SD_RAW_SAVE_RAM 0
#endif

#endif