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/* |
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* Copyright (c) 2006-2007 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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/** |
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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 0 |
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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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/* 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_ATmega88__) || \ |
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defined(__AVR_ATmega168__) |
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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 << PB2) |
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#define unselect_card() PORTB |= (1 << PB2) |
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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 << PB4) |
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#define unselect_card() PORTB |= (1 << PB4) |
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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 << PB0) |
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#define unselect_card() PORTB |= (1 << PB0) |
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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 >> PC4) & 0x01) |
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#define get_pin_locked() ((PINC >> PC5) & 0x01) |
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/** |
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* @} |
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*/ |
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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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#endif |
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