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/*
* Copyright (c) 2006-2008 by Roland Riegel <feedback@roland-riegel.de>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either the GNU General Public License version 2
* or the GNU Lesser General Public License version 2.1, both as
* published by the Free Software Foundation.
*/
#ifndef SD_RAW_CONFIG_H
#define SD_RAW_CONFIG_H
#include <stdint.h>
/**
* \addtogroup sd_raw
*
* @{
*/
/**
* \file
* MMC/SD support configuration (license: GPLv2 or LGPLv2.1)
*/
/**
* \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 1
/**
* \ingroup sd_raw_config
* Controls MMC/SD write buffering.
*
* Set to 1 to buffer write accesses, set to 0 to disable it.
*
* \note This option has no effect when SD_RAW_WRITE_SUPPORT is 0.
*/
#define SD_RAW_WRITE_BUFFERING 1
/**
* \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
/**
* \ingroup sd_raw_config
* Controls support for SDHC cards.
*
* Set to 1 to support so-called SDHC memory cards, i.e. SD
* cards with more than 2 gigabytes of memory.
*/
#define SD_RAW_SDHC 0
/**
* @}
*/
/* defines for customisation of sd/mmc port access */
#if defined(__AVR_ATmega8__) || \
defined(__AVR_ATmega48__) || \
defined(__AVR_ATmega88__) || \
defined(__AVR_ATmega168__)
#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 select_card() PORTB &= ~(1 << PB2)
#define unselect_card() PORTB |= (1 << PB2)
#elif defined(__AVR_ATmega16__) || \
defined(__AVR_ATmega32__) || \
defined(__AVR_ATmega644__) || \
defined(__AVR_ATmega324P__) || \
defined(__AVR_ATmega644P__)
#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 select_card() PORTB &= ~(1 << PB4)
#define unselect_card() PORTB |= (1 << PB4)
#elif defined(__AVR_ATmega64__) || \
defined(__AVR_ATmega128__) || \
defined(__AVR_ATmega169__)
#define configure_pin_mosi() DDRB |= (1 << DDB2)
#define configure_pin_sck() DDRB |= (1 << DDB1)
#define configure_pin_ss() DDRB |= (1 << DDB0)
#define configure_pin_miso() DDRB &= ~(1 << DDB3)
#define select_card() PORTB &= ~(1 << PB0)
#define unselect_card() PORTB |= (1 << PB0)
#else
#error "no sd/mmc pin mapping available!"
#endif
#define configure_pin_available() DDRC &= ~(1 << DDC4)
#define configure_pin_locked() DDRC &= ~(1 << DDC5)
#define get_pin_available() ((PINC >> PC4) & 0x01)
#define get_pin_locked() ((PINC >> PC5) & 0x01)
#if SD_RAW_SDHC
typedef uint64_t offset_t;
#else
typedef uint32_t offset_t;
#endif
/* configuration checks */
#if SD_RAW_WRITE_SUPPORT
#undef SD_RAW_SAVE_RAM
#define SD_RAW_SAVE_RAM 0
#else
#undef SD_RAW_WRITE_BUFFERING
#define SD_RAW_WRITE_BUFFERING 0
#endif
#endif
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