140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
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/*
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* Copyright (c) 2006-2012 by Roland Riegel <feedback@roland-riegel.de>
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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#ifndef SD_RAW_CONFIG_H
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#define SD_RAW_CONFIG_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* \addtogroup sd_raw
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*
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* @{
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*/
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/**
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* \file
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* MMC/SD support configuration (license: GPLv2 or LGPLv2.1)
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*/
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/**
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* \ingroup sd_raw_config
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* Controls MMC/SD write support.
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*
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* Set to 1 to enable MMC/SD write support, set to 0 to disable it.
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*/
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#define SD_RAW_WRITE_SUPPORT 1
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/**
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* \ingroup sd_raw_config
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* Controls MMC/SD write buffering.
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*
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* Set to 1 to buffer write accesses, set to 0 to disable it.
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*
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* \note This option has no effect when SD_RAW_WRITE_SUPPORT is 0.
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*/
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#define SD_RAW_WRITE_BUFFERING 1
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/**
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* \ingroup sd_raw_config
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* Controls MMC/SD access buffering.
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*
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* Set to 1 to save static RAM, but be aware that you will
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* lose performance.
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*
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* \note When SD_RAW_WRITE_SUPPORT is 1, SD_RAW_SAVE_RAM will
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* be reset to 0.
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*/
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#define SD_RAW_SAVE_RAM 1
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/**
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* \ingroup sd_raw_config
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* Controls support for SDHC cards.
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*
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* Set to 1 to support so-called SDHC memory cards, i.e. SD
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* cards with more than 2 gigabytes of memory.
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*/
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#define SD_RAW_SDHC 0
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/**
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* @}
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*/
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/* defines for customisation of sd/mmc port access */
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#if defined(__AVR_ATmega8__) || \
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defined(__AVR_ATmega48__) || \
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defined(__AVR_ATmega48P__) || \
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defined(__AVR_ATmega88__) || \
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defined(__AVR_ATmega88P__) || \
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defined(__AVR_ATmega168__) || \
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defined(__AVR_ATmega168P__) || \
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defined(__AVR_ATmega328P__)
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#define configure_pin_mosi() DDRB |= (1 << DDB3)
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#define configure_pin_sck() DDRB |= (1 << DDB5)
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#define configure_pin_ss() DDRB |= (1 << DDB2)
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#define configure_pin_miso() DDRB &= ~(1 << DDB4)
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#define select_card() PORTB &= ~(1 << PORTB2)
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#define unselect_card() PORTB |= (1 << PORTB2)
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#elif defined(__AVR_ATmega16__) || \
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defined(__AVR_ATmega32__)
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#define configure_pin_mosi() DDRB |= (1 << DDB5)
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#define configure_pin_sck() DDRB |= (1 << DDB7)
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#define configure_pin_ss() DDRB |= (1 << DDB4)
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#define configure_pin_miso() DDRB &= ~(1 << DDB6)
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#define select_card() PORTB &= ~(1 << PORTB4)
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#define unselect_card() PORTB |= (1 << PORTB4)
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#elif defined(__AVR_ATmega64__) || \
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defined(__AVR_ATmega128__) || \
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defined(__AVR_ATmega169__)
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#define configure_pin_mosi() DDRB |= (1 << DDB2)
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#define configure_pin_sck() DDRB |= (1 << DDB1)
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#define configure_pin_ss() DDRB |= (1 << DDB0)
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#define configure_pin_miso() DDRB &= ~(1 << DDB3)
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#define select_card() PORTB &= ~(1 << PORTB0)
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#define unselect_card() PORTB |= (1 << PORTB0)
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#else
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#error "no sd/mmc pin mapping available!"
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#endif
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#define configure_pin_available() DDRC &= ~(1 << DDC4)
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#define configure_pin_locked() DDRC &= ~(1 << DDC5)
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#define get_pin_available() (PINC & (1 << PINC4))
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#define get_pin_locked() (PINC & (1 << PINC5))
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#if SD_RAW_SDHC
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typedef uint64_t offset_t;
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#else
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typedef uint32_t offset_t;
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#endif
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/* configuration checks */
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#if SD_RAW_WRITE_SUPPORT
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#undef SD_RAW_SAVE_RAM
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#define SD_RAW_SAVE_RAM 0
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#else
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#undef SD_RAW_WRITE_BUFFERING
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#define SD_RAW_WRITE_BUFFERING 0
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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