499 lines
14 KiB
C++
499 lines
14 KiB
C++
|
/* mbed Microcontroller Library
|
||
|
|
* Copyright (c) 2006-2012 ARM Limited
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
|
* in the Software without restriction, including without limitation the rights
|
||
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
|
* furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in
|
||
|
|
* all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
* SOFTWARE.
|
||
|
|
*/
|
||
|
|
/* Introduction
|
||
|
|
* ------------
|
||
|
|
* SD and MMC cards support a number of interfaces, but common to them all
|
||
|
|
* is one based on SPI. This is the one I'm implmenting because it means
|
||
|
|
* it is much more portable even though not so performant, and we already
|
||
|
|
* have the mbed SPI Interface!
|
||
|
|
*
|
||
|
|
* The main reference I'm using is Chapter 7, "SPI Mode" of:
|
||
|
|
* http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
|
||
|
|
*
|
||
|
|
* SPI Startup
|
||
|
|
* -----------
|
||
|
|
* The SD card powers up in SD mode. The SPI interface mode is selected by
|
||
|
|
* asserting CS low and sending the reset command (CMD0). The card will
|
||
|
|
* respond with a (R1) response.
|
||
|
|
*
|
||
|
|
* CMD8 is optionally sent to determine the voltage range supported, and
|
||
|
|
* indirectly determine whether it is a version 1.x SD/non-SD card or
|
||
|
|
* version 2.x. I'll just ignore this for now.
|
||
|
|
*
|
||
|
|
* ACMD41 is repeatedly issued to initialise the card, until "in idle"
|
||
|
|
* (bit 0) of the R1 response goes to '0', indicating it is initialised.
|
||
|
|
*
|
||
|
|
* You should also indicate whether the host supports High Capicity cards,
|
||
|
|
* and check whether the card is high capacity - i'll also ignore this
|
||
|
|
*
|
||
|
|
* SPI Protocol
|
||
|
|
* ------------
|
||
|
|
* The SD SPI protocol is based on transactions made up of 8-bit words, with
|
||
|
|
* the host starting every bus transaction by asserting the CS signal low. The
|
||
|
|
* card always responds to commands, data blocks and errors.
|
||
|
|
*
|
||
|
|
* The protocol supports a CRC, but by default it is off (except for the
|
||
|
|
* first reset CMD0, where the CRC can just be pre-calculated, and CMD8)
|
||
|
|
* I'll leave the CRC off I think!
|
||
|
|
*
|
||
|
|
* Standard capacity cards have variable data block sizes, whereas High
|
||
|
|
* Capacity cards fix the size of data block to 512 bytes. I'll therefore
|
||
|
|
* just always use the Standard Capacity cards with a block size of 512 bytes.
|
||
|
|
* This is set with CMD16.
|
||
|
|
*
|
||
|
|
* You can read and write single blocks (CMD17, CMD25) or multiple blocks
|
||
|
|
* (CMD18, CMD25). For simplicity, I'll just use single block accesses. When
|
||
|
|
* the card gets a read command, it responds with a response token, and then
|
||
|
|
* a data token or an error.
|
||
|
|
*
|
||
|
|
* SPI Command Format
|
||
|
|
* ------------------
|
||
|
|
* Commands are 6-bytes long, containing the command, 32-bit argument, and CRC.
|
||
|
|
*
|
||
|
|
* +---------------+------------+------------+-----------+----------+--------------+
|
||
|
|
* | 01 | cmd[5:0] | arg[31:24] | arg[23:16] | arg[15:8] | arg[7:0] | crc[6:0] | 1 |
|
||
|
|
* +---------------+------------+------------+-----------+----------+--------------+
|
||
|
|
*
|
||
|
|
* As I'm not using CRC, I can fix that byte to what is needed for CMD0 (0x95)
|
||
|
|
*
|
||
|
|
* All Application Specific commands shall be preceded with APP_CMD (CMD55).
|
||
|
|
*
|
||
|
|
* SPI Response Format
|
||
|
|
* -------------------
|
||
|
|
* The main response format (R1) is a status byte (normally zero). Key flags:
|
||
|
|
* idle - 1 if the card is in an idle state/initialising
|
||
|
|
* cmd - 1 if an illegal command code was detected
|
||
|
|
*
|
||
|
|
* +-------------------------------------------------+
|
||
|
|
* R1 | 0 | arg | addr | seq | crc | cmd | erase | idle |
|
||
|
|
* +-------------------------------------------------+
|
||
|
|
*
|
||
|
|
* R1b is the same, except it is followed by a busy signal (zeros) until
|
||
|
|
* the first non-zero byte when it is ready again.
|
||
|
|
*
|
||
|
|
* Data Response Token
|
||
|
|
* -------------------
|
||
|
|
* Every data block written to the card is acknowledged by a byte
|
||
|
|
* response token
|
||
|
|
*
|
||
|
|
* +----------------------+
|
||
|
|
* | xxx | 0 | status | 1 |
|
||
|
|
* +----------------------+
|
||
|
|
* 010 - OK!
|
||
|
|
* 101 - CRC Error
|
||
|
|
* 110 - Write Error
|
||
|
|
*
|
||
|
|
* Single Block Read and Write
|
||
|
|
* ---------------------------
|
||
|
|
*
|
||
|
|
* Block transfers have a byte header, followed by the data, followed
|
||
|
|
* by a 16-bit CRC. In our case, the data will always be 512 bytes.
|
||
|
|
*
|
||
|
|
* +------+---------+---------+- - - -+---------+-----------+----------+
|
||
|
|
* | 0xFE | data[0] | data[1] | | data[n] | crc[15:8] | crc[7:0] |
|
||
|
|
* +------+---------+---------+- - - -+---------+-----------+----------+
|
||
|
|
*/
|
||
|
|
#include "SDFileSystem.h"
|
||
|
|
#include "mbed_debug.h"
|
||
|
|
|
||
|
|
#define SD_COMMAND_TIMEOUT 5000
|
||
|
|
|
||
|
|
#define SD_DBG 0
|
||
|
|
|
||
|
|
SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name) :
|
||
|
|
FATFileSystem(name), _spi(mosi, miso, sclk), _cs(cs), _is_initialized(0) {
|
||
|
|
_cs = 1;
|
||
|
|
|
||
|
|
// Set default to 100kHz for initialisation and 1MHz for data transfer
|
||
|
|
_init_sck = 100000;
|
||
|
|
_transfer_sck = 1000000;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define R1_IDLE_STATE (1 << 0)
|
||
|
|
#define R1_ERASE_RESET (1 << 1)
|
||
|
|
#define R1_ILLEGAL_COMMAND (1 << 2)
|
||
|
|
#define R1_COM_CRC_ERROR (1 << 3)
|
||
|
|
#define R1_ERASE_SEQUENCE_ERROR (1 << 4)
|
||
|
|
#define R1_ADDRESS_ERROR (1 << 5)
|
||
|
|
#define R1_PARAMETER_ERROR (1 << 6)
|
||
|
|
|
||
|
|
// Types
|
||
|
|
// - v1.x Standard Capacity
|
||
|
|
// - v2.x Standard Capacity
|
||
|
|
// - v2.x High Capacity
|
||
|
|
// - Not recognised as an SD Card
|
||
|
|
#define SDCARD_FAIL 0
|
||
|
|
#define SDCARD_V1 1
|
||
|
|
#define SDCARD_V2 2
|
||
|
|
#define SDCARD_V2HC 3
|
||
|
|
|
||
|
|
int SDFileSystem::initialise_card() {
|
||
|
|
// Set to SCK for initialisation, and clock card with cs = 1
|
||
|
|
_spi.frequency(_init_sck);
|
||
|
|
_cs = 1;
|
||
|
|
for (int i = 0; i < 16; i++) {
|
||
|
|
_spi.write(0xFF);
|
||
|
|
}
|
||
|
|
|
||
|
|
// send CMD0, should return with all zeros except IDLE STATE set (bit 0)
|
||
|
|
if (_cmd(0, 0) != R1_IDLE_STATE) {
|
||
|
|
debug("No disk, or could not put SD card in to SPI idle state\n");
|
||
|
|
return SDCARD_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
// send CMD8 to determine whther it is ver 2.x
|
||
|
|
int r = _cmd8();
|
||
|
|
if (r == R1_IDLE_STATE) {
|
||
|
|
return initialise_card_v2();
|
||
|
|
} else if (r == (R1_IDLE_STATE | R1_ILLEGAL_COMMAND)) {
|
||
|
|
return initialise_card_v1();
|
||
|
|
} else {
|
||
|
|
debug("Not in idle state after sending CMD8 (not an SD card?)\n");
|
||
|
|
return SDCARD_FAIL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::initialise_card_v1() {
|
||
|
|
for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) {
|
||
|
|
_cmd(55, 0);
|
||
|
|
if (_cmd(41, 0) == 0) {
|
||
|
|
cdv = 512;
|
||
|
|
debug_if(SD_DBG, "\n\rInit: SEDCARD_V1\n\r");
|
||
|
|
return SDCARD_V1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
debug("Timeout waiting for v1.x card\n");
|
||
|
|
return SDCARD_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::initialise_card_v2() {
|
||
|
|
for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) {
|
||
|
|
wait_ms(50);
|
||
|
|
_cmd58();
|
||
|
|
_cmd(55, 0);
|
||
|
|
if (_cmd(41, 0x40000000) == 0) {
|
||
|
|
_cmd58();
|
||
|
|
debug_if(SD_DBG, "\n\rInit: SDCARD_V2\n\r");
|
||
|
|
cdv = 1;
|
||
|
|
return SDCARD_V2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
debug("Timeout waiting for v2.x card\n");
|
||
|
|
return SDCARD_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::disk_initialize() {
|
||
|
|
_is_initialized = initialise_card();
|
||
|
|
if (_is_initialized == 0) {
|
||
|
|
debug("Fail to initialize card\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
debug_if(SD_DBG, "init card = %d\n", _is_initialized);
|
||
|
|
_sectors = _sd_sectors();
|
||
|
|
|
||
|
|
// Set block length to 512 (CMD16)
|
||
|
|
if (_cmd(16, 512) != 0) {
|
||
|
|
debug("Set 512-byte block timed out\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set SCK for data transfer
|
||
|
|
_spi.frequency(_transfer_sck);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::disk_write(const uint8_t* buffer, uint64_t block_number, uint8_t count) {
|
||
|
|
if (!_is_initialized) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (uint64_t b = block_number; b < block_number + count; b++) {
|
||
|
|
// set write address for single block (CMD24)
|
||
|
|
if (_cmd(24, b * cdv) != 0) {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// send the data block
|
||
|
|
_write(buffer, 512);
|
||
|
|
buffer += 512;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::disk_read(uint8_t* buffer, uint64_t block_number, uint8_t count) {
|
||
|
|
if (!_is_initialized) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (uint64_t b = block_number; b < block_number + count; b++) {
|
||
|
|
// set read address for single block (CMD17)
|
||
|
|
if (_cmd(17, b * cdv) != 0) {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// receive the data
|
||
|
|
_read(buffer, 512);
|
||
|
|
buffer += 512;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::disk_status() {
|
||
|
|
// FATFileSystem::disk_status() returns 0 when initialized
|
||
|
|
if (_is_initialized) {
|
||
|
|
return 0;
|
||
|
|
} else {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::disk_sync() { return 0; }
|
||
|
|
uint64_t SDFileSystem::disk_sectors() { return _sectors; }
|
||
|
|
|
||
|
|
|
||
|
|
// PRIVATE FUNCTIONS
|
||
|
|
int SDFileSystem::_cmd(int cmd, int arg) {
|
||
|
|
_cs = 0;
|
||
|
|
|
||
|
|
// send a command
|
||
|
|
_spi.write(0x40 | cmd);
|
||
|
|
_spi.write(arg >> 24);
|
||
|
|
_spi.write(arg >> 16);
|
||
|
|
_spi.write(arg >> 8);
|
||
|
|
_spi.write(arg >> 0);
|
||
|
|
_spi.write(0x95);
|
||
|
|
|
||
|
|
// wait for the repsonse (response[7] == 0)
|
||
|
|
for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) {
|
||
|
|
int response = _spi.write(0xFF);
|
||
|
|
if (!(response & 0x80)) {
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return response;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return -1; // timeout
|
||
|
|
}
|
||
|
|
int SDFileSystem::_cmdx(int cmd, int arg) {
|
||
|
|
_cs = 0;
|
||
|
|
|
||
|
|
// send a command
|
||
|
|
_spi.write(0x40 | cmd);
|
||
|
|
_spi.write(arg >> 24);
|
||
|
|
_spi.write(arg >> 16);
|
||
|
|
_spi.write(arg >> 8);
|
||
|
|
_spi.write(arg >> 0);
|
||
|
|
_spi.write(0x95);
|
||
|
|
|
||
|
|
// wait for the repsonse (response[7] == 0)
|
||
|
|
for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) {
|
||
|
|
int response = _spi.write(0xFF);
|
||
|
|
if (!(response & 0x80)) {
|
||
|
|
return response;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return -1; // timeout
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int SDFileSystem::_cmd58() {
|
||
|
|
_cs = 0;
|
||
|
|
int arg = 0;
|
||
|
|
|
||
|
|
// send a command
|
||
|
|
_spi.write(0x40 | 58);
|
||
|
|
_spi.write(arg >> 24);
|
||
|
|
_spi.write(arg >> 16);
|
||
|
|
_spi.write(arg >> 8);
|
||
|
|
_spi.write(arg >> 0);
|
||
|
|
_spi.write(0x95);
|
||
|
|
|
||
|
|
// wait for the repsonse (response[7] == 0)
|
||
|
|
for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) {
|
||
|
|
int response = _spi.write(0xFF);
|
||
|
|
if (!(response & 0x80)) {
|
||
|
|
int ocr = _spi.write(0xFF) << 24;
|
||
|
|
ocr |= _spi.write(0xFF) << 16;
|
||
|
|
ocr |= _spi.write(0xFF) << 8;
|
||
|
|
ocr |= _spi.write(0xFF) << 0;
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return response;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return -1; // timeout
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::_cmd8() {
|
||
|
|
_cs = 0;
|
||
|
|
|
||
|
|
// send a command
|
||
|
|
_spi.write(0x40 | 8); // CMD8
|
||
|
|
_spi.write(0x00); // reserved
|
||
|
|
_spi.write(0x00); // reserved
|
||
|
|
_spi.write(0x01); // 3.3v
|
||
|
|
_spi.write(0xAA); // check pattern
|
||
|
|
_spi.write(0x87); // crc
|
||
|
|
|
||
|
|
// wait for the repsonse (response[7] == 0)
|
||
|
|
for (int i = 0; i < SD_COMMAND_TIMEOUT * 1000; i++) {
|
||
|
|
char response[5];
|
||
|
|
response[0] = _spi.write(0xFF);
|
||
|
|
if (!(response[0] & 0x80)) {
|
||
|
|
for (int j = 1; j < 5; j++) {
|
||
|
|
response[i] = _spi.write(0xFF);
|
||
|
|
}
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return response[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return -1; // timeout
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::_read(uint8_t *buffer, uint32_t length) {
|
||
|
|
_cs = 0;
|
||
|
|
|
||
|
|
// read until start byte (0xFF)
|
||
|
|
while (_spi.write(0xFF) != 0xFE);
|
||
|
|
|
||
|
|
// read data
|
||
|
|
for (uint32_t i = 0; i < length; i++) {
|
||
|
|
buffer[i] = _spi.write(0xFF);
|
||
|
|
}
|
||
|
|
_spi.write(0xFF); // checksum
|
||
|
|
_spi.write(0xFF);
|
||
|
|
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int SDFileSystem::_write(const uint8_t*buffer, uint32_t length) {
|
||
|
|
_cs = 0;
|
||
|
|
|
||
|
|
// indicate start of block
|
||
|
|
_spi.write(0xFE);
|
||
|
|
|
||
|
|
// write the data
|
||
|
|
for (uint32_t i = 0; i < length; i++) {
|
||
|
|
_spi.write(buffer[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// write the checksum
|
||
|
|
_spi.write(0xFF);
|
||
|
|
_spi.write(0xFF);
|
||
|
|
|
||
|
|
// check the response token
|
||
|
|
if ((_spi.write(0xFF) & 0x1F) != 0x05) {
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// wait for write to finish
|
||
|
|
while (_spi.write(0xFF) == 0);
|
||
|
|
|
||
|
|
_cs = 1;
|
||
|
|
_spi.write(0xFF);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static uint32_t ext_bits(unsigned char *data, int msb, int lsb) {
|
||
|
|
uint32_t bits = 0;
|
||
|
|
uint32_t size = 1 + msb - lsb;
|
||
|
|
for (uint32_t i = 0; i < size; i++) {
|
||
|
|
uint32_t position = lsb + i;
|
||
|
|
uint32_t byte = 15 - (position >> 3);
|
||
|
|
uint32_t bit = position & 0x7;
|
||
|
|
uint32_t value = (data[byte] >> bit) & 1;
|
||
|
|
bits |= value << i;
|
||
|
|
}
|
||
|
|
return bits;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint64_t SDFileSystem::_sd_sectors() {
|
||
|
|
uint32_t c_size, c_size_mult, read_bl_len;
|
||
|
|
uint32_t block_len, mult, blocknr, capacity;
|
||
|
|
uint32_t hc_c_size;
|
||
|
|
uint64_t blocks;
|
||
|
|
|
||
|
|
// CMD9, Response R2 (R1 byte + 16-byte block read)
|
||
|
|
if (_cmdx(9, 0) != 0) {
|
||
|
|
debug("Didn't get a response from the disk\n");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t csd[16];
|
||
|
|
if (_read(csd, 16) != 0) {
|
||
|
|
debug("Couldn't read csd response from disk\n");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// csd_structure : csd[127:126]
|
||
|
|
// c_size : csd[73:62]
|
||
|
|
// c_size_mult : csd[49:47]
|
||
|
|
// read_bl_len : csd[83:80] - the *maximum* read block length
|
||
|
|
|
||
|
|
int csd_structure = ext_bits(csd, 127, 126);
|
||
|
|
|
||
|
|
switch (csd_structure) {
|
||
|
|
case 0:
|
||
|
|
cdv = 512;
|
||
|
|
c_size = ext_bits(csd, 73, 62);
|
||
|
|
c_size_mult = ext_bits(csd, 49, 47);
|
||
|
|
read_bl_len = ext_bits(csd, 83, 80);
|
||
|
|
|
||
|
|
block_len = 1 << read_bl_len;
|
||
|
|
mult = 1 << (c_size_mult + 2);
|
||
|
|
blocknr = (c_size + 1) * mult;
|
||
|
|
capacity = blocknr * block_len;
|
||
|
|
blocks = capacity / 512;
|
||
|
|
debug_if(SD_DBG, "\n\rSDCard\n\rc_size: %d \n\rcapacity: %ld \n\rsectors: %lld\n\r", c_size, capacity, blocks);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
cdv = 1;
|
||
|
|
hc_c_size = ext_bits(csd, 63, 48);
|
||
|
|
blocks = (hc_c_size+1)*1024;
|
||
|
|
debug_if(SD_DBG, "\n\rSDHC Card \n\rhc_c_size: %d\n\rcapacity: %lld \n\rsectors: %lld\n\r", hc_c_size, blocks*512, blocks);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
debug("CSD struct unsupported\r\n");
|
||
|
|
return 0;
|
||
|
|
};
|
||
|
|
return blocks;
|
||
|
|
}
|