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[DeviceDrivers][SPI][spi_msd.c] fixed CSD Version 2.0 sector count calc.

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aozima 2018-03-09 21:29:53 +08:00
parent f582bb5ba4
commit 0e4de6f8f4
1 changed files with 4 additions and 2 deletions
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6
components/drivers/spi/spi_msd.c
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@ -2,7 +2,7 @@
* File : msd.c * File : msd.c
* SPI mode SD Card Driver * SPI mode SD Card Driver
* This file is part of RT-Thread RTOS * This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
* *
* The license and distribution terms for this file may be * The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at * found in the file LICENSE in this distribution or at
@ -15,6 +15,7 @@
* 2012-02-01 aozima use new RT-Thread SPI drivers. * 2012-02-01 aozima use new RT-Thread SPI drivers.
* 2012-04-11 aozima get max. data transfer rate from CSD[TRAN_SPEED]. * 2012-04-11 aozima get max. data transfer rate from CSD[TRAN_SPEED].
* 2012-05-21 aozima update MMC card support. * 2012-05-21 aozima update MMC card support.
* 2018-03-09 aozima fixed CSD Version 2.0 sector count calc.
*/ */
#include <string.h> #include <string.h>
@ -1163,8 +1164,9 @@ static rt_err_t rt_msd_init(rt_device_t dev)
/* memory capacity = (C_SIZE+1) * 512K byte */ /* memory capacity = (C_SIZE+1) * 512K byte */
card_capacity = (C_SIZE + 1) / 2; /* unit : Mbyte */ card_capacity = (C_SIZE + 1) / 2; /* unit : Mbyte */
msd->geometry.sector_count = card_capacity * 1024; /* 1 Mbyte = 512 byte X 2048 */ msd->geometry.sector_count = (C_SIZE + 1) * 1024; /* 512KB = 1024sector */
MSD_DEBUG("[info] card capacity : %d.%d Gbyte\r\n", card_capacity / 1024, (card_capacity % 1024) * 100 / 1024); MSD_DEBUG("[info] card capacity : %d.%d Gbyte\r\n", card_capacity / 1024, (card_capacity % 1024) * 100 / 1024);
MSD_DEBUG("[info] sector_count : %d\r\n", msd->geometry.sector_count);
} }
else else
{ {