/*------------------------------------------------------------------------*/
/* STM32F100: MMCv3/SDv1/SDv2 (SPI mode) control module                   */
/*------------------------------------------------------------------------*/
/*
/  Copyright (C) 2018, ChaN, all right reserved.
/
/ * This software is a free software and there is NO WARRANTY.
/ * No restriction on use. You can use, modify and redistribute it for
/   personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
/ * Redistributions of source code must retain the above copyright notice.
/
/-------------------------------------------------------------------------*/

/*--------------------------------------------------------------------------
   Module Private Functions
---------------------------------------------------------------------------*/

#include "ost_hal.h"
#include "debug.h"
#include "sdcard.h"

/**
 * @}
 */
/* STM32_Private_Types */

/** @defgroup STM32_Private_Defines
 * @{
 */

/**
 * @brief  Dummy byte
 */
#define SD_DUMMY_BYTE 0xFF

/**
 * @brief  Number of 8-bit cycles for RUMP UP phase
 */
#define SD_NUM_TRIES_RUMPUP ((uint32_t)2500)

/**
 * @brief  Maximum number of tries to send a command
 */
#define SD_NUM_TRIES ((uint16_t)300)

/**
 * @brief  Maximum number of tries until ACMD41/CMD1 initializes SD card
 * It means a time until "In Idle State" flag is set during initialization
 * For information:
 * ~ 11000 for Kingston 4Gb
 * ~ 10000 for SanDisk  1Gb
 * ~  6000 for Samsung  8Gb
 */
#define SD_NUM_TRIES_INIT ((uint16_t)20000)

/**
 * @brief  Maximum number of tries to receive data transmission token
 * It means a time before data transmission starts
 * For information:
 * ~  300 for SanDisk  1Gb
 * ~  600 for Kingston 4Gb
 * ~  900 for SP       4Gb
 * ~  500 for Samsung  8Gb
 * ~  300 for Lexar    4Gb
 */
#define SD_NUM_TRIES_READ ((uint16_t)2000)

/**
 * @brief  Maximum number of tries until SD card writes data
 * It means a time while BUSY flag is set, i.e. card writes the data received
 * For information:
 * ~  6100 for Kingston 4Gb
 * ~  4600 for Lexar    4Gb
 * ~ 80000 for SP       4Gb (9000)
 * ~ 10000 for SanDisk  1Gb
 * ~119000 for Samsung  8Gb
 */
#define SD_NUM_TRIES_WRITE ((uint32_t)1000000)

/**
 * @brief  Maximum number of tries until SD card erases data
 * It means a time while BUSY flag is set, i.e. card erases sectors
 * For information:
 * ~  6100 for Kingston 4Gb
 * ~  5200 for Lexar    4Gb
 * ~ 10300 for SP       4Gb
 * ~   N/A for SanDisk  1Gb
 * ~120000 for Samsung  8Gb
 */
#define SD_NUM_TRIES_ERASE ((uint32_t)1000000)

/**
 * @brief  Start Data tokens:
 *         Tokens (necessary because at nop/idle (and CS active) only 0xff is
 *         on the data/command line)
 */
#define SD_DATA_BLOCK_READ_START 0xFE			/*!< Data token start byte, Start Single/Multiple Block Read */
#define SD_DATA_SINGLE_BLOCK_WRITE_START 0xFE	/*!< Data token start byte, Start Single Block Write */
#define SD_DATA_MULTIPLE_BLOCK_WRITE_START 0xFC /*!< Data token start byte, Start Multiple Block Write */
#define SD_DATA_MULTIPLE_BLOCK_WRITE_STOP 0xFD	/*!< Data token stop byte, Stop Multiple Block Write */

static SDCardType cardType;

/**
 * @brief  Detect if SD card is correctly plugged in the memory slot.
 * @param  None
 * @retval Return if SD is detected or not
 */
uint8_t SD_Detect(void)
{ /* check GPIO to detect SD */
	if (ost_hal_sdcard_get_presence())
	{
		return SD_PRESENT;
	}
	return SD_NOT_PRESENT;
}

/**
 * @brief  Hold SPI bus for SD card
 * @param  None
 * @retval None
 */
static void SD_Bus_Hold(void)
{ /* Select SD Card: set SD chip select pin low */
	ost_hal_sdcard_cs_low();
}

/**
 * @brief  Release SPI bus used by SD card
 * @param  None
 * @retval None
 */
static void SD_Bus_Release(void)
{ /* Deselect SD Card: set SD chip select pin high */
	ost_hal_sdcard_cs_high();
	ost_hal_sdcard_spi_transfer(0xFF); /* send dummy byte: 8 Clock pulses of delay */
}

/**
 * @brief  Send a command to SD card and receive R1 response
 * @param  Cmd: Command to send to SD card
 * @param  Arg: Command argument
 * @param  Crc: CRC
 * @retval R1 response byte
 */
static SD_Error SD_SendCmd(uint8_t cmd, uint32_t arg, uint8_t crc)
{
	uint8_t res;
	uint16_t i = SD_NUM_TRIES;
	/* send a command */
	ost_hal_sdcard_spi_transfer((cmd & 0x3F) | 0x40);  /*!< byte 1 */
	ost_hal_sdcard_spi_transfer((uint8_t)(arg >> 24)); /*!< byte 2 */
	ost_hal_sdcard_spi_transfer((uint8_t)(arg >> 16)); /*!< byte 3 */
	ost_hal_sdcard_spi_transfer((uint8_t)(arg >> 8));  /*!< byte 4 */
	ost_hal_sdcard_spi_transfer((uint8_t)arg);		   /*!< byte 5 */
	ost_hal_sdcard_spi_transfer(crc | 0x01);		   /*!< byte 6: CRC */
	/* a byte received immediately after CMD12 should be discarded... */
	// if (cmd == SD_CMD_STOP_TRANSMISSION)
	// 	ost_hal_sdcard_spi_transfer();
	/* SD Card responds within Ncr (response time),
	   which is 0-8 bytes for SDSC cards, 1-8 bytes for MMC cards */
	do
	{
		res = ost_hal_sdcard_spi_transfer(0xFF);
		/* R1 response always starts with 7th bit set to 0 */
	} while ((res & SD_CHECK_BIT) != 0x00 && i-- > 0);
	return (SD_Error)res;
}

/**
 * @brief  Some commands take longer time and respond with R1b response,
 *         so we have to wait until 0xFF recieved (MISO is set to HIGH)
 * @retval Nonzero if required state wasn't recieved
 */
static SD_Error SD_WaitReady(void)
{
	uint16_t i = SD_NUM_TRIES;
	while (i-- > 0)
	{
		if (ost_hal_sdcard_spi_transfer(0xFF) == 0xFF)
		{
			// debug_printf( " [[ WAIT delay %d ]] ", SD_NUM_TRIES - i );
			return SD_RESPONSE_NO_ERROR;
		}
	}
	// debug_printf( " [[ WAIT delay was not enough ]] " );
	return SD_RESPONSE_FAILURE;
}

/**
 * @brief  Get 4 bytes of R3 or R7 response
 * @param  pres: Pointer to uint32_t variable for result
 * @retval None
 */
static void SD_GetResponse4b(uint8_t *pres)
{
	pres[3] = ost_hal_sdcard_spi_transfer(0xFF);
	pres[2] = ost_hal_sdcard_spi_transfer(0xFF);
	pres[1] = ost_hal_sdcard_spi_transfer(0xFF);
	pres[0] = ost_hal_sdcard_spi_transfer(0xFF);
}

/**
 * @brief  Set SD Card sector size to SD_CMD_SET_BLOCKLEN (512 bytes)
 * @param  New sector size
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
static SD_Error SD_FixSectorSize(uint16_t ssize)
{
	return SD_SendCmd(SD_CMD_SET_BLOCKLEN, (uint32_t)ssize, 0xFF);
}

/**
 * @brief  Wait until data transmission token is received
 * @retval Data transmission token or 0xFF if timeout occured
 */
static uint8_t SD_WaitBytesRead(void)
{
	uint16_t i = SD_NUM_TRIES_READ;
	uint8_t b;
	do
	{
		b = ost_hal_sdcard_spi_transfer(0xFF);
	} while (b == 0xFF && i-- > 0);

	// if (b != 0xFF)
	// 	debug_printf(" [[ READ delay %d ]] ", SD_NUM_TRIES_READ - i);
	// else
	// 	debug_printf(" [[ READ delay was not enough ]] ");

	return b;
}

/**
 * @brief  Writing data into flash takes even longer time and it responds with R1b response,
 *         so we have to wait until 0xFF recieved (MISO is set to HIGH)
 * @retval Nonzero if required state wasn't recieved
 */
static SD_Error SD_WaitBytesWritten(void)
{
	uint32_t i = SD_NUM_TRIES_WRITE;
	while (i-- > 0)
	{
		if (ost_hal_sdcard_spi_transfer(0xFF) == 0xFF)
		{
			//	debug_printf(" [[ WRITE delay %lu ]] ", SD_NUM_TRIES_WRITE - i);
			return SD_RESPONSE_NO_ERROR;
		}
	}
	// debug_printf(" [[ WRITE delay was not enough ]] ");
	return SD_RESPONSE_FAILURE;
}

/**
 * @brief  Erasing data into flash takes some time and it responds with R1b response,
 *         so we have to wait until 0xFF recieved (MISO is set to HIGH)
 * @retval Nonzero if required state wasn't recieved
 */
static SD_Error SD_WaitBytesErased(void)
{
	uint32_t i = SD_NUM_TRIES_ERASE;
	while (i-- > 0)
	{
		if (ost_hal_sdcard_spi_transfer(0xFF) == 0xFF)
		{
			//		debug_printf(" [[ ERASE delay %lu ]] ", SD_NUM_TRIES_ERASE - i);
			return SD_RESPONSE_NO_ERROR;
		}
	}
	//	debug_printf(" [[ ERASE delay was not enough ]] ");
	return SD_RESPONSE_FAILURE;
}

/**
 * @brief  Recieve data from SD Card
 * @param  data: Pre-allocated data buffer
 * @param  len: Number of bytes to receive
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
static SD_Error SD_ReceiveData(uint8_t *data, uint16_t len)
{
	uint16_t i = 0;
	uint8_t b;

	/* some cards need time before transmitting the data... */
	b = SD_WaitBytesRead();

	if (b != 0xFF)
	{ /* most cards send transmission start token, don't fail if it's not the case... */
		data[i] = b;
		if (data[i] == SD_DATA_BLOCK_READ_START)		 /* 0xFE */
			data[i] = ost_hal_sdcard_spi_transfer(0xFF); /* just get the next byte... */

		/* receive the rest of data... */
		for (i = 1; i < len; ++i)
			data[i] = ost_hal_sdcard_spi_transfer(0xFF);

		/* get CRC bytes (not really needed by us, but required by SD) */
		ost_hal_sdcard_spi_transfer(0xFF);
		ost_hal_sdcard_spi_transfer(0xFF);

		return SD_RESPONSE_NO_ERROR;
	}
	return SD_RESPONSE_FAILURE;
}

/**
 * @brief  Put SD in Idle state.
 * @param  None
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
static SD_Error SD_GoIdleState(void)
{
	uint32_t res = 0;
	uint16_t i;
	uint8_t state;

	/* --- put SD card in SPI mode */
	SD_Bus_Hold();

	i = SD_NUM_TRIES; /* reset try count... */
	do
	{																/* loop until In Idle State Response (in R1 format) confirmation */
		state = SD_SendCmd(SD_CMD_GO_IDLE_STATE, 0x00000000, 0x95); /* valid CRC is mandatory here */
	} while (state != SD_IN_IDLE_STATE && i-- > 0);
	/* still no Idle State Response => return response failure */
	if (state != SD_IN_IDLE_STATE)
		return SD_RESPONSE_FAILURE;

	/* --- SD card is now in idle state and in SPI mode, activate it and get its type */
	cardType = SD_Card_SDSC_v2;

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* --- try to send CMD8 to offer voltage 2.7-3.6V with check pattern 0xAA */
	i = SD_NUM_TRIES; /* reset try count... */
	do
	{
		state = SD_SendCmd(SD_CMD_SEND_IF_COND, 0x000001AA, 0x87); /* valid CRC is mandatory here */
		if ((state & SD_ILLEGAL_COMMAND) != 0)
		{ /* SD card doesn't accept CMD8 => it's SDSC or MMC card... */
			cardType = SD_Card_SDSC_v1;
			break;
		}
		else /* SD card accepts CMD8 => it's SDHC or SDXC card... */
		{	 /* get R7 response and verify pattern for sanity check... */
			SD_GetResponse4b((uint8_t *)&res);
			if ((res & 0x0000FFFF) == 0x000001AA)
				break; /* check pattern is OK, card accepted offered voltage... */
					   /* else specification recommends to retry CMD8 again */
		}
	} while (i-- > 0);
	if (i == 0)
		return SD_RESPONSE_FAILURE; /* error occurred... */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* --- activate card initialization sequence... */
	/* CMD55(0) -> ACMD41(0) -> ... */
	i = SD_NUM_TRIES_INIT; /* reset try count... */
	do
	{
		state = SD_SendCmd(SD_CMD_SEND_APP, 0x00000000, 0x65);
		if (state != SD_IN_IDLE_STATE)
		{ /* error occurred => last chance is to try it as a legacy MMC card */
			cardType = SD_Card_MMC;
			break;
		}

		state = SD_WaitReady(); /* make sure card is ready before we go further... */

		if (cardType == SD_Card_SDSC_v1) /* HCS bit (0 here) is ignored by SDSC card */
			state = SD_SendCmd(SD_CMD_ACTIVATE_INIT, 0x00000000, 0xFF);
		else
			state = SD_SendCmd(SD_CMD_ACTIVATE_INIT, 0x40000000, 0x77);
		/* loop while SD_IN_IDLE_STATE bit is set, meaning card is still performing initialization */
	} while ((state & SD_IN_IDLE_STATE) != 0x00 && i-- > 0);
	/* it might be legacy MMC card... */
	if (cardType == SD_Card_SDSC_v1 &&
		(state & SD_IN_IDLE_STATE) != 0x00)
		cardType = SD_Card_MMC;

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	if (cardType == SD_Card_MMC) /* legacy MMC card is initialized with CMD1... */
	{							 /* -> CMD1(0) -> ... */
		i = SD_NUM_TRIES_INIT;	 /* reset try count... */
		do
		{
			state = SD_SendCmd(SD_CMD_SEND_OP_COND, 0x00000000, 0xFF);
		} while ((state & SD_IN_IDLE_STATE) != 0x00 && i-- > 0);
		if (i == 0)
			return SD_RESPONSE_FAILURE; /* error occurred... */
	}
	else if (cardType == SD_Card_SDSC_v2) /* recent cards support byte-addressing, check it... */
	{									  /* -> CMD58(0)... */
		if (i == 0)						  /* first check if timeout occured during its initialization... */
			return SD_RESPONSE_FAILURE;	  /* error occurred... */
		/* request OCR register (send CMD58)... */
		state = SD_SendCmd(SD_CMD_READ_OCR, 0x00000000, 0xFF);
		if (state == SD_RESPONSE_NO_ERROR)
		{ /* get OCR register (R3 response) and check its CCS (bit 30) */
			SD_GetResponse4b((uint8_t *)&res);
			cardType = (res & 0x40000000) ? SD_Card_SDHC : SD_Card_SDSC_v2;
		}
	}
	/* else cardType == SD_Card_SDSC_v1 */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* print out detected SD card type... */
	switch (cardType)
	{
	case SD_Card_SDSC_v1:
		debug_printf("SDSC v1 (byte address)");
		break;
	case SD_Card_SDSC_v2:
		debug_printf("SDSC v2 (byte address)");
		break;
	case SD_Card_SDHC:
		debug_printf("SDHC (512-bytes sector address)");
		break;
	case SD_Card_MMC:
		debug_printf("MMC (byte address)");
		break;
	default:
		debug_printf("UNKNOWN");
		break;
	}

	debug_printf(" card initialized successfully\n");

	return SD_RESPONSE_NO_ERROR;
}

SD_Error sdcard_init()
{
	uint32_t i = 0;
	SD_Error state;

	/* step 0:
	 * Check if SD card is present... */
	if (SD_Detect() == SD_NOT_PRESENT)
	{
		return SD_RESPONSE_FAILURE;
	}

	debug_printf("\r\n [TEST] SD Card detected\r\n");

	/* step 2:
	 * Card is now powered up (i.e. 1ms at least elapsed at 0.5V),
	 * Supply rump up time (set MOSI HIGH) to let voltage reach stable 2.2V at least.
	 * According to the specs it must be 74 SPI clock cycles minimum at 100-400Khz
	 * At 25Mhz it'll be 250 times more cycles => send 2500 times 0xFF byte.
	 * Chip Select pin should be set HIGH too. */

	/* set SD chip select pin high */
	ost_hal_sdcard_cs_high();

	/* send dummy byte 0xFF (rise MOSI high for 2500*8 SPI bus clock cycles) */
	while (i++ < SD_NUM_TRIES_RUMPUP)
	{
		ost_hal_sdcard_spi_transfer(SD_DUMMY_BYTE);
	}

	/* step 3:
	 * Put SD in SPI mode & perform soft reset */
	state = SD_GoIdleState();

	/* step 4:
	 * Force sector size to SD_BLOCK_SIZE (i.e. 512 bytes) */
	if (state == SD_RESPONSE_NO_ERROR && cardType != SD_Card_SDHC)
	{
		state = SD_FixSectorSize((uint16_t)SD_BLOCK_SIZE);
	}

	/* step 5:
	 * Release SPI bus for other devices */
	SD_Bus_Release();

	return state;
}

/**
 * @brief  Reads a sector of SD_BLOCK_SIZE bytes from the SD card
 * @param  pBuffer: pointer to the buffer that receives the data read from SD.
 * @param  readAddr: SD's internal address to read from (sector number)
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
SD_Error sdcard_sector_read(uint32_t readAddr, uint8_t *pBuffer)
{
	SD_Error state;

	// debug_printf("--> reading sector %lu ...", readAddr);

	/* non High Capacity cards use byte-oriented addresses */
	if (cardType != SD_Card_SDHC)
		readAddr <<= 9;

	SD_Bus_Hold(); /* hold SPI bus... */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* send CMD17 (SD_CMD_READ_SINGLE_BLOCK) to read one block */
	state = SD_SendCmd(SD_CMD_READ_SINGLE_BLOCK, readAddr, 0xFF);
	/* receive data if command acknowledged... */
	if (state == SD_RESPONSE_NO_ERROR)
		state = SD_ReceiveData(pBuffer, SD_BLOCK_SIZE);

	SD_Bus_Release(); /* release SPI bus... */

	if (state == SD_RESPONSE_NO_ERROR)
		debug_printf("OK\n");
	else
		debug_printf("KO(%d)\n", state);

	return state;
}

/**
 * @brief  Reads multiple sectors of SD_BLOCK_SIZE bytes from the SD card
 * @param  pBuffer: pointer to the buffer that receives the data read from SD.
 * @param  readAddr: SD's internal address to read from.
 * @param  nbSectors: number of blocks to be read.
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
SD_Error sdcard_sectors_read(uint32_t readAddr, uint8_t *pBuffer, uint32_t nbSectors)
{
	SD_Error state;

	debug_printf("--> reading %lu sectors from %lu ...", nbSectors, readAddr);

	/* non High Capacity cards use byte-oriented addresses */
	if (cardType != SD_Card_SDHC)
		readAddr <<= 9;

	SD_Bus_Hold(); /* hold SPI bus... */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* send CMD18 (SD_CMD_READ_MULT_BLOCK) to read multiple blocks */
	state = SD_SendCmd(SD_CMD_READ_MULT_BLOCK, readAddr, 0xFF);
	if (state == SD_RESPONSE_NO_ERROR)
	{ /* receive data... */
		while (nbSectors-- > 0)
		{
			state = SD_ReceiveData(pBuffer, SD_BLOCK_SIZE);
			if (state != SD_RESPONSE_NO_ERROR)
				break;
			pBuffer += SD_BLOCK_SIZE;
		}
		/* transmission is open-ended (no block count was set) =>
		 * send CMD12 (SD_CMD_STOP_TRANSMISSION) to stop it... */
		state = SD_SendCmd(SD_CMD_STOP_TRANSMISSION, 0x00000000, 0xFF);
	}

	SD_Bus_Release(); /* release SPI bus... */

	if (state == SD_RESPONSE_NO_ERROR)
		debug_printf("OK\n");
	else
		debug_printf("KO(%d)\n", state);

	return state;
}

/**
 * @brief  Writes a sector of SD_BLOCK_SIZE bytes on the SD card
 * @param  pBuffer: pointer to the buffer with the data to be written on SD.
 * @param  writeAddr: address to write on.
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
SD_Error sdcard_sector_write(uint32_t writeAddr, const uint8_t *pBuffer)
{
	SD_Error state;
	SD_DataResponse res;
	uint16_t BlockSize = SD_BLOCK_SIZE;

	debug_printf("--> writing sector %lu ...", writeAddr);

	/* non High Capacity cards use byte-oriented addresses */
	if (cardType != SD_Card_SDHC)
		writeAddr <<= 9;

	SD_Bus_Hold(); /* hold SPI bus... */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* send CMD24 (SD_CMD_WRITE_SINGLE_BLOCK) to write single block */
	state = SD_SendCmd(SD_CMD_WRITE_SINGLE_BLOCK, writeAddr, 0xFF);
	if (state == SD_RESPONSE_NO_ERROR)
	{ /* wait at least 8 clock cycles (send >=1 0xFF bytes) before transmission starts */
		ost_hal_sdcard_spi_transfer(SD_DUMMY_BYTE);
		ost_hal_sdcard_spi_transfer(SD_DUMMY_BYTE);
		ost_hal_sdcard_spi_transfer(SD_DUMMY_BYTE);
		/* send data token to signify the start of data transmission... */
		ost_hal_sdcard_spi_transfer(SD_DATA_SINGLE_BLOCK_WRITE_START); /* 0xFE */
		/* send data... */
		while (BlockSize-- > 0)
			ost_hal_sdcard_spi_transfer(*pBuffer++);
		/* put 2 CRC bytes (not really needed by us, but required by SD) */
		ost_hal_sdcard_spi_transfer(SD_DUMMY_BYTE);
		ost_hal_sdcard_spi_transfer(SD_DUMMY_BYTE);
		/* check data response... */
		res = (SD_DataResponse)(ost_hal_sdcard_spi_transfer(0xFF) & SD_RESPONSE_MASK); /* mask unused bits */
		if ((res & SD_RESPONSE_ACCEPTED) != 0)
		{								   /* card is now processing data and goes to BUSY mode, wait until it finishes... */
			state = SD_WaitBytesWritten(); /* make sure card is ready before we go further... */
		}
		else
			state = SD_RESPONSE_FAILURE;
	}

	SD_Bus_Release(); /* release SPI bus... */

	if (state == SD_RESPONSE_NO_ERROR)
		debug_printf("OK\n");
	else
		debug_printf("KO(%d)\n", state);

	return state;
}

/**
 * @brief  Writes multiple sectors of SD_BLOCK_SIZE bytes on the SD card
 * @param  pBuffer: pointer to the buffer with the data to be written on the SD.
 * @param  writeAddr: address to write on.
 * @param  nbSectors: number of blocks to be written.
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
SD_Error sdcard_sectors_write(uint32_t writeAddr, const uint8_t *pBuffer, uint32_t nbSectors)
{
	SD_Error state;
	SD_DataResponse res;
	uint16_t BlockSize = SD_BLOCK_SIZE;

	debug_printf("--> writing %lu sectors at %lu ...", nbSectors, writeAddr);

	/* non High Capacity cards use byte-oriented addresses */
	if (cardType != SD_Card_SDHC)
		writeAddr <<= 9;

	SD_Bus_Hold(); /* hold SPI bus... */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* it is recommended to specify in advance the number of blocks being written
	 * to let SD card erase needed number of blocks, write operation should take less time then */
	if (cardType != SD_Card_MMC)
	{ /* notify card about the total number of blocks to be sent (send CMD23)... */
		state = SD_SendCmd(SD_CMD_SET_BLOCK_COUNT, (uint32_t)nbSectors, 0xFF);
		if (state != SD_RESPONSE_NO_ERROR)
		{
			SD_Bus_Release(); /* release SPI bus... */
			return state;
		}
	}

	/* request writing data starting from the given address (send CMD25)... */
	state = SD_SendCmd(SD_CMD_WRITE_MULT_BLOCK, writeAddr, 0xFF);
	if (state == SD_RESPONSE_NO_ERROR)
	{
		/* send some dummy bytes before transmission starts... */
		ost_hal_sdcard_spi_transfer(0xFF);
		ost_hal_sdcard_spi_transfer(0xFF);
		ost_hal_sdcard_spi_transfer(0xFF);
		/* transfer data... */
		while (nbSectors-- > 0 && state != SD_RESPONSE_FAILURE)
		{																	 /* --- {{ send data packet */
			ost_hal_sdcard_spi_transfer(SD_DATA_MULTIPLE_BLOCK_WRITE_START); /* 0xFC */
			/* send data... */
			while (BlockSize-- > 0)
				ost_hal_sdcard_spi_transfer(*pBuffer++);
			/* put CRC bytes (not really needed by us, but required by SD) */
			ost_hal_sdcard_spi_transfer(0xFF);
			ost_hal_sdcard_spi_transfer(0xFF);
			/* --- }} */
			/* check data response... */
			res = (SD_DataResponse)(ost_hal_sdcard_spi_transfer(0xFF) & SD_RESPONSE_MASK); /* mask unused bits */
			if ((res & SD_RESPONSE_ACCEPTED) != 0)
			{								   /* card is now processing data and goes to BUSY mode, wait until it finishes... */
				state = SD_WaitBytesWritten(); /* make sure card is ready before we go further... */
			}
			else
				state = SD_RESPONSE_FAILURE;
		}
		/* notify SD card that we finished sending data to write on it */
		ost_hal_sdcard_spi_transfer(SD_DATA_MULTIPLE_BLOCK_WRITE_STOP); /* 0xFD */
		ost_hal_sdcard_spi_transfer(0xFF);								/* read and discard 1 byte from card */
		/* card is now processing data and goes to BUSY mode, wait until it finishes... */
		state = SD_WaitReady(); /* make sure card is ready before we go further... */
	}

	SD_Bus_Release(); /* release SPI bus... */

	if (state == SD_RESPONSE_NO_ERROR)
		debug_printf("OK\n");
	else
		debug_printf("KO(%d)\n", state);

	return state;
}

/**
 * @brief  Erase specified range of sectors on SD card
 * @param  eraseAddrFrom: Starting sector number
 * @param  eraseAddrTo: End sector number
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
SD_Error sdcard_sectors_erase(uint32_t eraseAddrFrom, uint32_t eraseAddrTo)
{
	SD_Error state;

	if (cardType == SD_Card_MMC)
	{
		debug_printf("--> erasing sectors is not supported for MMC cards\n");
		return SD_ILLEGAL_COMMAND;
	}

	debug_printf("--> erasing sectors from %lu to %lu ...", eraseAddrFrom, eraseAddrTo);

	/* non High Capacity cards use byte-oriented addresses */
	if (cardType != SD_Card_SDHC)
	{
		eraseAddrFrom <<= 9;
		eraseAddrTo <<= 9;
	}

	SD_Bus_Hold(); /* hold SPI bus... */

	state = SD_WaitReady(); /* make sure card is ready before we go further... */

	/* send starting block address (CMD32)... */
	state = SD_SendCmd(SD_CMD_ERASE_BLOCK_START, (uint32_t)eraseAddrFrom, 0xFF);
	if (state == SD_RESPONSE_NO_ERROR)
	{ /* send end block address (CMD33)... */
		state = SD_SendCmd(SD_CMD_ERASE_BLOCK_END, (uint32_t)eraseAddrTo, 0xFF);
		if (state == SD_RESPONSE_NO_ERROR)
		{ /* erase all selected blocks (CMD38)... */
			state = SD_SendCmd(SD_CMD_ERASE, 0x00000000, 0xFF);
			if (state == SD_RESPONSE_NO_ERROR)
			{								  /* wait until sectors get erased... */
				state = SD_WaitBytesErased(); /* make sure card is ready before we go further... */
			}
		}
	}

	SD_Bus_Release(); /* release SPI bus... */

	if (state == SD_RESPONSE_NO_ERROR)
		debug_printf("OK\n");
	else
		debug_printf("KO(%d)\n", state);

	return state;
}

/**
 * @brief  Read the CSD card register.
 *         Reading the contents of the CSD register in SPI mode is a simple
 *         read-block transaction.
 * @param  SD_csd: pointer on an SCD register structure
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
static SD_Error SD_GetCSDRegister(SD_CSD *SD_csd)
{
	SD_Error state;
	uint8_t CSD_Tab[16];

	state = SD_WaitReady(); /* make sure card is ready before we go further... */
	if (state != SD_RESPONSE_NO_ERROR)
		return SD_RESPONSE_FAILURE;

	/* request CSD register (send CMD9)... */
	state = SD_SendCmd(SD_CMD_SEND_CSD, 0x00000000, 0xFF);
	if (state != SD_RESPONSE_NO_ERROR)
		return SD_RESPONSE_FAILURE;
	state = SD_ReceiveData(CSD_Tab, 16); /* receive CSD register data */

	SD_csd->CSDStruct = (CSD_Tab[0] & 0xC0) >> 6; /* Byte 0 */
	SD_csd->SysSpecVersion = (CSD_Tab[0] & 0x3C) >> 2;
	SD_csd->Reserved1 = CSD_Tab[0] & 0x03;
	SD_csd->TAAC = CSD_Tab[1];							 /* Byte 1 */
	SD_csd->NSAC = CSD_Tab[2];							 /* Byte 2 */
	SD_csd->MaxBusClkFrec = CSD_Tab[3];					 /* Byte 3 */
	SD_csd->CardComdClasses = CSD_Tab[4] << 4;			 /* Byte 4 */
	SD_csd->CardComdClasses |= (CSD_Tab[5] & 0xF0) >> 4; /* Byte 5 */
	SD_csd->RdBlockLen = CSD_Tab[5] & 0x0F;
	SD_csd->PartBlockRead = (CSD_Tab[6] & 0x80) >> 7; /* Byte 6 */
	SD_csd->WrBlockMisalign = (CSD_Tab[6] & 0x40) >> 6;
	SD_csd->RdBlockMisalign = (CSD_Tab[6] & 0x20) >> 5;
	SD_csd->DSRImpl = (CSD_Tab[6] & 0x10) >> 4;
	SD_csd->Reserved2 = (CSD_Tab[6] & 0x0C) >> 2;
	if (SD_csd->CSDStruct == 0)
	{													/* v1 */
		SD_csd->DeviceSize = (CSD_Tab[6] & 0x03) << 10; /* DeviceSize has 12 bits here */
		SD_csd->DeviceSize |= CSD_Tab[7] << 2;			/* Byte 7 */
		SD_csd->DeviceSize |= (CSD_Tab[8] & 0xC0) >> 6; /* Byte 8 */
		SD_csd->MaxRdCurrentVDDMin = (CSD_Tab[8] & 0x38) >> 3;
		SD_csd->MaxRdCurrentVDDMax = CSD_Tab[8] & 0x07;
		SD_csd->MaxWrCurrentVDDMin = (CSD_Tab[9] & 0xE0) >> 5; /* Byte 9 */
		SD_csd->MaxWrCurrentVDDMax = (CSD_Tab[9] & 0x1C) >> 2;
		SD_csd->DeviceSizeMul = (CSD_Tab[9] & 0x03) << 1;
		SD_csd->DeviceSizeMul |= (CSD_Tab[10] & 0x80) >> 7; /* Byte 10 */
	}
	else
	{ /* v2 */
		SD_csd->Reserved5 = (CSD_Tab[6] & 0x03) << 2;
		SD_csd->Reserved5 |= (CSD_Tab[7] & 0xC0) >> 6;	/* Byte 7 */
		SD_csd->DeviceSize = (CSD_Tab[7] & 0x3F) << 16; /* DeviceSize has 22 bits here */
		SD_csd->DeviceSize |= CSD_Tab[8] << 8;			/* Byte 8 */
		SD_csd->DeviceSize |= CSD_Tab[9];				/* Byte 9 */
		SD_csd->Reserved6 = (CSD_Tab[10] & 0x80) >> 7;	/* Byte 10 */
	}
	SD_csd->EraseBlockEnable = (CSD_Tab[10] & 0x40) >> 6;
	SD_csd->EraseSectorSize = (CSD_Tab[10] & 0x3F) << 1;
	SD_csd->EraseSectorSize |= (CSD_Tab[11] & 0x80) >> 7; /* Byte 11 */
	SD_csd->WrProtectGrSize = CSD_Tab[11] & 0x7F;
	SD_csd->WrProtectGrEnable = (CSD_Tab[12] & 0x80) >> 7; /* Byte 12 */
	SD_csd->ManDeflECC = (CSD_Tab[12] & 0x60) >> 5;
	SD_csd->WrSpeedFact = (CSD_Tab[12] & 0x1C) >> 2;
	SD_csd->MaxWrBlockLen = (CSD_Tab[12] & 0x03) << 2;
	SD_csd->MaxWrBlockLen |= (CSD_Tab[13] & 0xC0) >> 6; /* Byte 13 */
	SD_csd->WriteBlockPaPartial = (CSD_Tab[13] & 0x20) >> 5;
	SD_csd->Reserved3 = CSD_Tab[13] & 0x1E;
	SD_csd->ContentProtectAppli = CSD_Tab[13] & 0x01;
	SD_csd->FileFormatGroup = (CSD_Tab[14] & 0x80) >> 7; /* Byte 14 */
	SD_csd->CopyFlag = (CSD_Tab[14] & 0x40) >> 6;
	SD_csd->PermWrProtect = (CSD_Tab[14] & 0x20) >> 5;
	SD_csd->TempWrProtect = (CSD_Tab[14] & 0x10) >> 4;
	SD_csd->FileFormat = (CSD_Tab[14] & 0x0C) >> 2;
	SD_csd->ECC = CSD_Tab[14] & 0x03;
	SD_csd->CSD_CRC = (CSD_Tab[15] & 0xFE) >> 1; /* Byte 15 */
	SD_csd->Reserved4 = CSD_Tab[15] & 0x01;

	return state;
}

/**
 * @brief  Read the CID card register.
 *         Reading the contents of the CID register in SPI mode is a simple
 *         read-block transaction.
 * @param  SD_cid: pointer on an CID register structure
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
static SD_Error SD_GetCIDRegister(SD_CID *SD_cid)
{
	SD_Error state;
	uint8_t CID_Tab[16];

	state = SD_WaitReady(); /* make sure card is ready before we go further... */
	if (state != SD_RESPONSE_NO_ERROR)
		return SD_RESPONSE_FAILURE;

	/* request CID register (send CMD10)... */
	state = SD_SendCmd(SD_CMD_SEND_CID, 0x00000000, 0xFF);
	if (state != SD_RESPONSE_NO_ERROR)
		return SD_RESPONSE_FAILURE;
	state = SD_ReceiveData(CID_Tab, 16); /* receive CID register data */

	SD_cid->ManufacturerID = CID_Tab[0];			/* Byte 0 */
	SD_cid->OEM_AppliID = CID_Tab[1] << 8;			/* Byte 1 */
	SD_cid->OEM_AppliID |= CID_Tab[2];				/* Byte 2 */
	SD_cid->ProdName1 = CID_Tab[3] << 24;			/* Byte 3 */
	SD_cid->ProdName1 |= CID_Tab[4] << 16;			/* Byte 4 */
	SD_cid->ProdName1 |= CID_Tab[5] << 8;			/* Byte 5 */
	SD_cid->ProdName1 |= CID_Tab[6];				/* Byte 6 */
	SD_cid->ProdName2 = CID_Tab[7];					/* Byte 7 */
	SD_cid->ProdRev = CID_Tab[8];					/* Byte 8 */
	SD_cid->ProdSN = CID_Tab[9] << 24;				/* Byte 9 */
	SD_cid->ProdSN |= CID_Tab[10] << 16;			/* Byte 10 */
	SD_cid->ProdSN |= CID_Tab[11] << 8;				/* Byte 11 */
	SD_cid->ProdSN |= CID_Tab[12];					/* Byte 12 */
	SD_cid->Reserved1 |= (CID_Tab[13] & 0xF0) >> 4; /* Byte 13 */
	SD_cid->ManufactDate = (CID_Tab[13] & 0x0F) << 8;
	SD_cid->ManufactDate |= CID_Tab[14];		 /* Byte 14 */
	SD_cid->CID_CRC = (CID_Tab[15] & 0xFE) >> 1; /* Byte 15 */
	SD_cid->Reserved2 = 1;

	return state;
}

/**
 * @brief  Read the SCR card register.
 *         Reading the contents of the SCR register in SPI mode is a simple
 *         read-block transaction.
 * @param  SD_scr: pointer on an SCR register structure
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
static SD_Error SD_GetSCRRegister(SD_SCR *SD_scr)
{
	SD_Error state;
	uint8_t SCR_Tab[8];

	if (cardType == SD_Card_MMC)
	{
		debug_printf("SCR Register is not available for MMC cards\n");
		return SD_ILLEGAL_COMMAND;
	}

	state = SD_WaitReady(); /* make sure card is ready before we go further... */
	if (state != SD_RESPONSE_NO_ERROR)
		return SD_RESPONSE_FAILURE;

	/* request SCR register (send ACMD51)... */
	state = SD_SendCmd(SD_CMD_SEND_APP, 0x00000000, 0x65);
	if (state == SD_RESPONSE_NO_ERROR)
		state = SD_SendCmd(SD_CMD_SEND_SCR, 0x00000000, 0xFF);
	if (state != SD_RESPONSE_NO_ERROR)
		return SD_RESPONSE_FAILURE;
	state = SD_ReceiveData(SCR_Tab, 8); /* receive SCR register data */

	SD_scr->SCR_Version = (SCR_Tab[0] & 0xF0) >> 4; /* Byte 0 */
	SD_scr->SpecVersion = SCR_Tab[0] & 0x0F;
	SD_scr->StateAfterErase = (SCR_Tab[1] & 0x80) >> 7; /* Byte 1 */
	SD_scr->Security = (SCR_Tab[1] & 0x70) >> 4;
	SD_scr->BusWidth = SCR_Tab[1] & 0x0F;
	SD_scr->SpecVersion3 = (SCR_Tab[2] & 0x80) >> 7; /* Byte 2 */
	SD_scr->ExSecurity = (SCR_Tab[2] & 0x78) >> 3;
	SD_scr->Reserved1 = (SCR_Tab[2] & 0x07) << 6;
	SD_scr->Reserved1 |= (SCR_Tab[3] & 0xFC) >> 2; /* Byte 3 */
	SD_scr->CmdSupport1 = (SCR_Tab[3] & 0x02) >> 1;
	SD_scr->CmdSupport2 = SCR_Tab[3] & 0x01;
	SD_scr->Reserved2 = SCR_Tab[4] << 24;  /* Byte 4 */
	SD_scr->Reserved2 |= SCR_Tab[5] << 16; /* Byte 5 */
	SD_scr->Reserved2 |= SCR_Tab[6] << 8;  /* Byte 6 */
	SD_scr->Reserved2 |= SCR_Tab[7];	   /* Byte 7 */

	return state;
}

/**
 * @brief  Returns information about specific card.
 * @param  cardinfo: pointer to a SD_CardInfo structure that contains all SD
 *         card information.
 * @retval The SD Response:
 *         - SD_RESPONSE_FAILURE: Sequence failed
 *         - SD_RESPONSE_NO_ERROR: Sequence succeed
 */
SD_Error sdcard_get_card_info(SD_CardInfo *cardinfo)
{
	SD_Error status;

	SD_Bus_Hold(); /* hold SPI bus... */

	status = SD_GetCSDRegister(&(cardinfo->SD_csd));
	if (status == SD_RESPONSE_NO_ERROR)
		status = SD_GetCIDRegister(&(cardinfo->SD_cid));
	if (status == SD_RESPONSE_NO_ERROR && cardType != SD_Card_MMC)
		status = SD_GetSCRRegister(&(cardinfo->SD_scr));

	SD_Bus_Release(); /* release SPI bus... */

	if (status == SD_RESPONSE_NO_ERROR)
	{ /* to avoid overflow, card capacity is calculated in Kbytes */
		if (cardinfo->SD_csd.CSDStruct == 0)
		{ // v1:
			cardinfo->CardCapacity = cardinfo->SD_csd.DeviceSize + 1;
			cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
			cardinfo->CardBlockSize = 1 << cardinfo->SD_csd.RdBlockLen;
			if (cardinfo->SD_csd.RdBlockLen > 10)
				cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.RdBlockLen - 10));
			else
				cardinfo->CardCapacity /= (1 << (10 - cardinfo->SD_csd.RdBlockLen));
		}
		else
		{ // v2:
			cardinfo->CardCapacity = cardinfo->SD_csd.DeviceSize + 1;
			cardinfo->CardBlockSize = 1 << cardinfo->SD_csd.RdBlockLen;
			cardinfo->CardCapacity *= cardinfo->CardBlockSize;
		}
	}

	return status;
}

/**
 * @brief  Prints out human-readable information about SD Card
 * @param  Previously retrieved card info structure
 * @retval None
 */
void sdcard_dump_card_info(const SD_CardInfo *cardinfo)
{
	uint8_t is_OSRv1 = (cardinfo->SD_csd.CSDStruct == 0);
	debug_printf("\nDumping SD Card information:\n\n    GLOBAL INFO\nSD Card type : ");
	/* some cards report wrong CSDStruct field in CSR register => use detected card type instead... */
	if (is_OSRv1 != 0)
		debug_printf("SDSC (v1 or v2)\n");
	else
		debug_printf("SDHC or SDXC\n");
	debug_printf("Card Capacity : %lu Kbytes\n", cardinfo->CardCapacity);
	debug_printf("Card Block Size : %lu bytes\n", cardinfo->CardBlockSize);

	debug_printf("\n    Card identification register (CID)\n");
	debug_printf("Manufacturer ID : %d\n", cardinfo->SD_cid.ManufacturerID);
	debug_printf("OEM / Application ID : %c%c\n",
				 ((char *)&(cardinfo->SD_cid.OEM_AppliID))[1],
				 ((char *)&(cardinfo->SD_cid.OEM_AppliID))[0]);
	debug_printf("Product Name : %c%c%c%c%c\n",
				 ((char *)&(cardinfo->SD_cid.ProdName1))[3],
				 ((char *)&(cardinfo->SD_cid.ProdName1))[2],
				 ((char *)&(cardinfo->SD_cid.ProdName1))[1],
				 ((char *)&(cardinfo->SD_cid.ProdName1))[0],
				 (char)(cardinfo->SD_cid.ProdName2));
	debug_printf("Product Revision : %d.%d\n",
				 (cardinfo->SD_cid.ProdRev & 0xF0) >> 4,
				 (cardinfo->SD_cid.ProdRev & 0x0F));
	debug_printf("Product Serial Number : %lu\n",
				 cardinfo->SD_cid.ProdSN);
	debug_printf("Manufacturing Date (YYYY-MM) : %d-%d\n",
				 2000 + ((cardinfo->SD_cid.ManufactDate & 0x0FF0) >> 4),
				 cardinfo->SD_cid.ManufactDate & 0x000F);
	debug_printf("CID CRC : %d\n", cardinfo->SD_cid.CID_CRC & 0x7F);

	debug_printf("\n    Card-specific data register (CSD)\n");
	if (is_OSRv1 != 0)
	{
		debug_printf("Data read access-time : ");
		switch ((cardinfo->SD_csd.TAAC & 0x78) >> 3)
		{
		case 0x0:
			debug_printf("0.0");
			break;
		case 0x1:
			debug_printf("1.0");
			break;
		case 0x2:
			debug_printf("1.2");
			break;
		case 0x3:
			debug_printf("1.3");
			break;
		case 0x4:
			debug_printf("1.5");
			break;
		case 0x5:
			debug_printf("2.0");
			break;
		case 0x6:
			debug_printf("2.5");
			break;
		case 0x7:
			debug_printf("3.0");
			break;
		case 0x8:
			debug_printf("3.5");
			break;
		case 0x9:
			debug_printf("4.0");
			break;
		case 0xA:
			debug_printf("4.5");
			break;
		case 0xB:
			debug_printf("5.0");
			break;
		case 0xC:
			debug_printf("5.5");
			break;
		case 0xD:
			debug_printf("6.0");
			break;
		case 0xE:
			debug_printf("7.0");
			break;
		case 0xF:
			debug_printf("8.0");
			break;
		default:
			break;
		}
		debug_printf(" x 1");
		switch (cardinfo->SD_csd.TAAC & 0x07)
		{
		case 0:
			debug_printf("n");
			break;
		case 1:
			debug_printf("0n");
			break;
		case 2:
			debug_printf("00n");
			break;
		case 3:
			debug_printf("u");
			break;
		case 4:
			debug_printf("0u");
			break;
		case 5:
			debug_printf("00u");
			break;
		case 6:
			debug_printf("m");
			break;
		case 7:
			debug_printf("0m");
			break;
		default:
			break;
		}
		debug_printf("s\nData read access-time in CLK cycles : %d\n", cardinfo->SD_csd.NSAC);
	}
	debug_printf("Max. bus clock frequency : %x", cardinfo->SD_csd.MaxBusClkFrec);
	switch (cardinfo->SD_csd.MaxBusClkFrec)
	{
	case 0x32:
		debug_printf(" (25Mhz)\n");
		break;
	case 0x5A:
		debug_printf(" (50Mhz)\n");
		break;
	case 0x0B:
		debug_printf(" (100Mhz)\n");
		break;
	case 0x2B:
		debug_printf(" (200Mhz)\n");
		break;
	default:
		debug_printf("\n");
		break;
	}
	debug_printf("\nCard command classes :");
	if (cardinfo->SD_csd.CardComdClasses & (0x001))
		debug_printf(" 0(basic)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 1))
		debug_printf(" 1");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 2))
		debug_printf(" 2(read)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 3))
		debug_printf(" 3");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 4))
		debug_printf(" 4(write)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 5))
		debug_printf(" 5(erase)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 6))
		debug_printf(" 6(protect)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 7))
		debug_printf(" 7(lock)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 8))
		debug_printf(" 8(app)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 9))
		debug_printf(" 9(i/o)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 10))
		debug_printf(" 10(switch)");
	if (cardinfo->SD_csd.CardComdClasses & (1 << 11))
		debug_printf(" 11");
	debug_printf("\n");

	if (is_OSRv1 != 0)
	{
		debug_printf("Max. read data block length : %d ( %d bytes )\n",
					 cardinfo->SD_csd.RdBlockLen,
					 1 << (cardinfo->SD_csd.RdBlockLen));
		debug_printf("Partial blocks for read allowed : %d\n", cardinfo->SD_csd.PartBlockRead);
		debug_printf("Write block misalignment : %d\n", cardinfo->SD_csd.WrBlockMisalign);
		debug_printf("Read block misalignment : %d\n", cardinfo->SD_csd.RdBlockMisalign);
	}
	else
	{
		debug_printf("Max. read data block length : always 512 bytes\n");
		debug_printf("Partial blocks for read are not allowed\n");
		debug_printf("Read/Write block misalignment is not allowed\n");
	}
	debug_printf("DSR implemented : %d\n", cardinfo->SD_csd.DSRImpl);
	debug_printf("Device Size (4112 <= and <= 65375): %lu\n", cardinfo->SD_csd.DeviceSize);

	if (is_OSRv1 != 0)
	{
		debug_printf("Max. read current at VDD min : ");
		switch (cardinfo->SD_csd.MaxRdCurrentVDDMin)
		{
		case 0:
			debug_printf("0.5");
			break;
		case 1:
			debug_printf("1");
			break;
		case 2:
			debug_printf("5");
			break;
		case 3:
			debug_printf("10");
			break;
		case 4:
			debug_printf("25");
			break;
		case 5:
			debug_printf("35");
			break;
		case 6:
			debug_printf("60");
			break;
		case 7:
			debug_printf("100");
			break;
		default:
			break;
		}
		debug_printf("mA\nMax. read current at VDD max : ");
		switch (cardinfo->SD_csd.MaxRdCurrentVDDMax)
		{
		case 0:
			debug_printf("0.5");
			break;
		case 1:
			debug_printf("1");
			break;
		case 2:
			debug_printf("5");
			break;
		case 3:
			debug_printf("10");
			break;
		case 4:
			debug_printf("25");
			break;
		case 5:
			debug_printf("35");
			break;
		case 6:
			debug_printf("60");
			break;
		case 7:
			debug_printf("100");
			break;
		default:
			break;
		}
		debug_printf("mA\nMax. write current at VDD min : ");
		switch (cardinfo->SD_csd.MaxWrCurrentVDDMin)
		{
		case 0:
			debug_printf("1");
			break;
		case 1:
			debug_printf("5");
			break;
		case 2:
			debug_printf("10");
			break;
		case 3:
			debug_printf("25");
			break;
		case 4:
			debug_printf("35");
			break;
		case 5:
			debug_printf("45");
			break;
		case 6:
			debug_printf("80");
			break;
		case 7:
			debug_printf("200");
			break;
		default:
			break;
		}
		debug_printf("mA\nMax. write current at VDD max : ");
		switch (cardinfo->SD_csd.MaxWrCurrentVDDMax)
		{
		case 0:
			debug_printf("1");
			break;
		case 1:
			debug_printf("5");
			break;
		case 2:
			debug_printf("10");
			break;
		case 3:
			debug_printf("25");
			break;
		case 4:
			debug_printf("35");
			break;
		case 5:
			debug_printf("45");
			break;
		case 6:
			debug_printf("80");
			break;
		case 7:
			debug_printf("200");
			break;
		default:
			break;
		}
		debug_printf("mA\nDevice size multiplier : %d\n", cardinfo->SD_csd.DeviceSizeMul);
		if (cardinfo->SD_csd.EraseBlockEnable == 0)
			debug_printf("Erase size : 1 or more units of %d bytes each\n", cardinfo->SD_csd.EraseSectorSize);
		else
			debug_printf("Erase size : 1 or more blocks of 512 bytes each\n");

		debug_printf("Write protect group size : %d\n", cardinfo->SD_csd.WrProtectGrSize);
		debug_printf("Write protect group enable : %d\n", cardinfo->SD_csd.WrProtectGrEnable);
		debug_printf("Write speed factor (Twrite/Tread) : %d\n", 1 << (cardinfo->SD_csd.WrSpeedFact & 0x3F));
		debug_printf("Max. write data block length : %d\n", 1 << (cardinfo->SD_csd.MaxWrBlockLen & 0xF));
		debug_printf("Partial blocks for write allowed : %d\n", cardinfo->SD_csd.WriteBlockPaPartial);
		debug_printf("File format group : %d\n", cardinfo->SD_csd.FileFormatGroup);
	}
	else
	{
		debug_printf("Erase size : 1 or more blocks of 512 bytes each\n");
		debug_printf("Write protect group disabled\n");
		debug_printf("Write timeout : 250ms\n");
		debug_printf("Max. write data block length : 512 bytes\n");
		debug_printf("Partial blocks for write are not allowed\n");
	}
	debug_printf("Copy flag (OTP) : %d\n", cardinfo->SD_csd.CopyFlag);
	debug_printf("Permanent write protection : %d\n", cardinfo->SD_csd.PermWrProtect);
	debug_printf("Temporary write protection : %d\n", cardinfo->SD_csd.TempWrProtect);

	if (is_OSRv1 != 0)
	{
		debug_printf("File Format : ");
		switch (cardinfo->SD_csd.FileFormat)
		{
		case 0:
			debug_printf("HDD-like file system with partition table\n");
			break;
		case 1:
			debug_printf("DOS FAT (FDD-like) with boot sector only (no partition table)\n");
			break;
		case 2:
			debug_printf("Universal File Format\n");
			break;
		case 3:
			debug_printf("Others/Unknown\n");
			break;
		default:
			break;
		}
	}
	debug_printf("CSD CRC : %d\n", cardinfo->SD_csd.CSD_CRC);

	if (cardType != SD_Card_MMC)
	{
		debug_printf("\n    SD Card configuration register (SCR)\n");
		debug_printf("SCR structure version : %d\n", cardinfo->SD_scr.SCR_Version);
		debug_printf("Physical layer specification version number : ");
		switch (cardinfo->SD_scr.SpecVersion)
		{
		case 0:
			debug_printf("Version 1.0 and 1.01");
			break;
		case 1:
			debug_printf("Version 1.10");
			break;
		case 2:
			debug_printf("Version %s", (cardinfo->SD_scr.SpecVersion3 == 0) ? "2.00" : "3.0x");
			break;
		default:
			debug_printf("reserved");
			break;
		}
		debug_printf("\nState of bits after sector erase : 0x%s\n", cardinfo->SD_scr.StateAfterErase ? "FF" : "00");
		debug_printf("CPRM security version : ");
		switch (cardinfo->SD_scr.Security)
		{
		case 0:
			debug_printf("no security");
			break;
		case 1:
			debug_printf("not used");
			break;
		case 2:
			debug_printf("SDSC security ver 1.01");
			break;
		case 3:
			debug_printf("SDHC security ver 2.00");
			break;
		case 4:
			debug_printf("SDXC security ver 3.xx");
			break;
		default:
			debug_printf("reserved");
			break;
		}
		debug_printf("\nSupported data bus width :");
		if (cardinfo->SD_scr.BusWidth & 0x01)
			debug_printf(" 1 bit");
		if (cardinfo->SD_scr.BusWidth & 0x04)
			debug_printf(" 4 bit");
		debug_printf("\nExtended security is%s supported\n", (cardinfo->SD_scr.ExSecurity == 0) ? " not" : "");
		debug_printf("Support of CMD23 (set block count) : %c\n", cardinfo->SD_scr.CmdSupport1 ? 'Y' : 'N');
		debug_printf("Support of CMD20 (speed class control) : %c\n", cardinfo->SD_scr.CmdSupport2 ? 'Y' : 'N');
	}
	debug_printf("\nDONE\n");
}

/**
 * @brief  Prints out SD card status in human-readable form
 * @param  Previously retrieved SD card status structure
 * @retval None
 */
void sdcard_dump_status(const SD_Status *SD_status)
{
	debug_printf("\nDumping SD Card status information:\n\n");
	if (cardType != SD_Card_MMC)
	{
		debug_printf("Bus width : ");
		switch (SD_status->BusWidth)
		{
		case 0x00:
			debug_printf("1 bit");
			break;
		case 0x02:
			debug_printf("4 bits");
			break;
		default:
			debug_printf("reserved");
			break;
		}
		debug_printf("\nSD card is%s in secured mode\n", SD_status->InSecuredMode ? "" : " not");
		debug_printf("Card Type : ");
		switch (SD_status->CardType)
		{
		case 0x0000:
			debug_printf("Regular SD card");
			break;
		case 0x0001:
			debug_printf("SD ROM card");
			break;
		case 0x0002:
			debug_printf("OTP card");
			break;
		default:
			debug_printf("other card");
			break;
		}
		debug_printf("\nSize of protected area : %lu\n", SD_status->SizeProtectedArea);
		debug_printf("Speed class : ");
		switch (SD_status->SpeedClass)
		{
		case 0x00:
			debug_printf("Class 0");
			break;
		case 0x01:
			debug_printf("Class 2");
			break;
		case 0x02:
			debug_printf("Class 4");
			break;
		case 0x03:
			debug_printf("Class 6");
			break;
		case 0x04:
			debug_printf("Class 10");
			break;
		default:
			debug_printf("Reserved");
			break;
		}
		debug_printf("\nPerformance move : ");
		switch (SD_status->PerformanceMove)
		{
		case 0x00:
			debug_printf("Sequential write");
			break;
		case 0xFF:
			debug_printf("Infinity");
			break;
		default:
			debug_printf("%d Mb/sec", SD_status->PerformanceMove);
			break;
		}
		debug_printf("\nAllocation Unit size : ");
		switch (SD_status->AU_Size)
		{
		case 0x00:
			debug_printf("not defined");
			break;
		case 0x01:
			debug_printf("16 Kb");
			break;
		case 0x02:
			debug_printf("32 Kb");
			break;
		case 0x03:
			debug_printf("64 Kb");
			break;
		case 0x04:
			debug_printf("128 Kb");
			break;
		case 0x05:
			debug_printf("256 Kb");
			break;
		case 0x06:
			debug_printf("512 Kb");
			break;
		case 0x07:
			debug_printf("1 Mb");
			break;
		case 0x08:
			debug_printf("2 Mb");
			break;
		case 0x09:
			debug_printf("4 Mb");
			break;
		case 0x0A:
			debug_printf("8 Mb");
			break;
		case 0x0B:
			debug_printf("12 Mb");
			break;
		case 0x0C:
			debug_printf("16 Mb");
			break;
		case 0x0D:
			debug_printf("24 Mb");
			break;
		case 0x0E:
			debug_printf("32 Mb");
			break;
		case 0x0F:
			debug_printf("64 Mb");
			break;
		default:
			break;
		}
		debug_printf("\nErase Size : %d AU blocks\n", SD_status->EraseSize);
		debug_printf("Erase Timeout : %d seconds\n", SD_status->EraseTimeout);
		debug_printf("Erase Offset : %d seconds\n", SD_status->EraseOffset);
		debug_printf("Speed Grade for UHS mode : %s\n",
					 (SD_status->UHS_SpeedGrade == 0) ? "< 10 Mb/sec" : "> 10 Mb/sec");
		debug_printf("Allocation Unit size for UHS mode : ");
		switch (SD_status->UHS_AU_Size)
		{
		case 0x00:
			debug_printf("not defined");
			break;
		case 0x07:
			debug_printf("1 Mb");
			break;
		case 0x08:
			debug_printf("2 Mb");
			break;
		case 0x09:
			debug_printf("4 Mb");
			break;
		case 0x0A:
			debug_printf("8 Mb");
			break;
		case 0x0B:
			debug_printf("12 Mb");
			break;
		case 0x0C:
			debug_printf("16 Mb");
			break;
		case 0x0D:
			debug_printf("24 Mb");
			break;
		case 0x0E:
			debug_printf("32 Mb");
			break;
		case 0x0F:
			debug_printf("64 Mb");
			break;
		default:
			debug_printf("not used");
			break;
		}
	}
	debug_printf("\n\nDONE\n");
}