98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
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Copyright 2007, Freie Universitaet Berlin. All rights reserved.
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These sources were developed at the Freie Universität Berlin, Computer
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Systems and Telematics group.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Freie Universitaet Berlin (FUB) nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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This software is provided by FUB and the contributors on an "as is"
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basis, without any representations or warranties of any kind, express
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or implied including, but not limited to, representations or
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warranties of non-infringement, merchantability or fitness for a
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particular purpose. In no event shall FUB or contributors be liable
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for any direct, indirect, incidental, special, exemplary, or
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consequential damages (including, but not limited to, procurement of
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substitute goods or services; loss of use, data, or profits; or
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business interruption) however caused and on any theory of liability,
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whether in contract, strict liability, or tort (including negligence
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or otherwise) arising in any way out of the use of this software, even
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if advised of the possibility of such damage.
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This implementation was developed by the CST group at the FUB.
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For documentation and questions please use the web site
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http://scatterweb.mi.fu-berlin.de and the mailinglist
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scatterweb@lists.spline.inf.fu-berlin.de (subscription via the Website).
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Berlin, 2007
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*/
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/**
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* @file ScatterWeb.Sd.erase.c
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* @ingroup libsd
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* @brief MMC-/SD-Card library, Block erase
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*
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* @author Michael Baar <baar@inf.fu-berlin.de>
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* @version $Revision: 1.5 $
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*
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* $Id: sd_erase.c,v 1.5 2009/05/26 12:15:46 nvt-se Exp $
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*/
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/**
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* @addtogroup libsd
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* @{
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*/
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#include "sd_internals.h"
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#include "sd.h"
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bool
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sd_erase_blocks(uint32_t address, uint16_t numBlocks)
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{
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uint8_t ret, r1;
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uint32_t endAdr;
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if(sd_protected()) {
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return FALSE;
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}
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if(!uart_lock(UART_MODE_SPI)) {
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return FALSE;
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}
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ret = _sd_send_cmd(SD_CMD_ERASE_WR_BLK_START_ADDR, SD_RESPONSE_SIZE_R1,
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&address, &r1);
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if(!ret | r1) {
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uart_unlock(UART_MODE_SPI);
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return FALSE;
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}
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endAdr = (numBlocks - 1) * sd_state.BlockLen;
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endAdr += address;
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ret = _sd_send_cmd(SD_CMD_ERASE_WR_BLK_END_ADDR, SD_RESPONSE_SIZE_R1,
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&endAdr, &r1);
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if(!ret | r1) {
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uart_unlock(UART_MODE_SPI);
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return FALSE;
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}
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ret = _sd_send_cmd(SD_CMD_ERASE, SD_RESPONSE_SIZE_R1, NULL, &r1);
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uart_unlock(UART_MODE_SPI);
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return ret;
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}
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/** @} */
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