stm32_eval_sdio_sd.c

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/**
  ******************************************************************************
  * @file    stm32_eval_sdio_sd.c
  * @author  MCD Application Team
  * @version V4.5.0
  * @date    07-March-2011
  * @brief   This file provides a set of functions needed to manage the SDIO SD 
  *          Card memory mounted on STM32xx-EVAL board (refer to stm32_eval.h
  *          to know about the boards supporting this memory). 
  *          
  *            
  *  @verbatim
  *
  *          ===================================================================
  *                                   How to use this driver
  *          ===================================================================
  *          It implements a high level communication layer for read and write 
  *          from/to this memory. The needed STM32 hardware resources (SDIO and 
  *          GPIO) are defined in stm32xx_eval.h file, and the initialization is 
  *          performed in SD_LowLevel_Init() function declared in stm32xx_eval.c 
  *          file.
  *          You can easily tailor this driver to any other development board, 
  *          by just adapting the defines for hardware resources and 
  *          SD_LowLevel_Init() function.
  *            
  *          A - SD Card Initialization and configuration
  *          ============================================    
  *            - To initialize the SD Card, use the SD_Init() function.  It 
  *              Initializes the SD Card and put it into StandBy State (Ready 
  *              for data transfer). This function provide the following operations:
  *           
  *              1 - Apply the SD Card initialization process at 400KHz and check
  *                  the SD Card type (Standard Capacity or High Capacity). You 
  *                  can change or adapt this frequency by adjusting the 
  *                  "SDIO_INIT_CLK_DIV" define inside the stm32xx_eval.h file. 
  *                  The SD Card frequency (SDIO_CK) is computed as follows:
  *                    
  *                     +---------------------------------------------+    
  *                     | SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) |
  *                     +---------------------------------------------+  
  *                          
  *                  In initialization mode and according to the SD Card standard, 
  *                  make sure that the SDIO_CK frequency don't exceed 400KHz.        
  *         
  *              2 - Get the SD CID and CSD data. All these information are
  *                  managed by the SDCardInfo structure. This structure provide
  *                  also ready computed SD Card capacity and Block size.   
  *
  *              3 - Configure the SD Card Data transfer frequency. By Default,
  *                  the card transfer frequency is set to 24MHz. You can change
  *                  or adapt this frequency by adjusting the "SDIO_TRANSFER_CLK_DIV" 
  *                  define inside the stm32xx_eval.h file.
  *                  The SD Card frequency (SDIO_CK) is computed as follows:
  *                    
  *                     +---------------------------------------------+    
  *                     | SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) |
  *                     +---------------------------------------------+     
  *                                    
  *                  In transfer mode and according to the SD Card standard, 
  *                  make sure that the SDIO_CK frequency don't exceed 25MHz
  *                  and 50MHz in High-speed mode switch.
  *                  To be able to use a frequency higher than 24MHz, you should
  *                  use the SDIO peripheral in bypass mode. Refer to the 
  *                  corresponding reference manual for more details.
  *                    
  *              4 -  Select the corresponding SD Card according to the address
  *                   read with the step 2.
  *                                   
  *              5 -  Configure the SD Card in wide bus mode: 4-bits data.                
  *
  *          B - SD Card Read operation
  *          ========================== 
  *           - You can read SD card by using two function: SD_ReadBlock() and
  *             SD_ReadMultiBlocks() functions. These functions support only
  *             512-byte block length.
  *           - The SD_ReadBlock() function read only one block (512-byte). This
  *             function can transfer the data using DMA controller or using 
  *             polling mode. To select between DMA or polling mode refer to 
  *             "SD_DMA_MODE" or "SD_POLLING_MODE" inside the stm32_eval_sdio_sd.h
  *             file and uncomment the corresponding line. By default the SD DMA
  *             mode is selected          
  *           - The SD_ReadMultiBlocks() function read only mutli blocks (multiple 
  *             of 512-byte). 
  *           - Any read operation should be followed by two functions to check
  *             if the DMA Controller and SD Card status.
  *              - SD_ReadWaitOperation(): this function insure that the DMA
  *                controller has finished all data transfer.
  *              - SD_GetStatus(): to check that the SD Card has finished the 
  *                data transfer and it is ready for data.
  *                  
  *           - The DMA transfer is finished by the SDIO Data End interrupt. User
  *             has to call the SD_ProcessIRQ() function inside the SDIO_IRQHandler().
  *             Don't forget to enable the SDIO_IRQn interrupt using the NVIC controller.      
  *                
  *          C - SD Card Write operation
  *          =========================== 
  *           - You can write SD card by using two function: SD_WriteBlock() and
  *             SD_WriteMultiBlocks() functions. These functions support only
  *             512-byte block length.   
  *           - The SD_WriteBlock() function write only one block (512-byte). This
  *             function can transfer the data using DMA controller or using 
  *             polling mode. To select between DMA or polling mode refer to 
  *             "SD_DMA_MODE" or "SD_POLLING_MODE" inside the stm32_eval_sdio_sd.h
  *             file and uncomment the corresponding line. By default the SD DMA
  *             mode is selected          
  *           - The SD_WriteMultiBlocks() function write only mutli blocks (multiple 
  *             of 512-byte). 
  *           - Any write operation should be followed by two functions to check
  *             if the DMA Controller and SD Card status.
  *              - SD_ReadWaitOperation(): this function insure that the DMA
  *                controller has finished all data transfer.
  *              - SD_GetStatus(): to check that the SD Card has finished the 
  *                data transfer and it is ready for data.         
  *                
  *           - The DMA transfer is finished by the SDIO Data End interrupt. User
  *             has to call the SD_ProcessIRQ() function inside the SDIO_IRQHandler().
  *             Don't forget to enable the SDIO_IRQn interrupt using the NVIC controller.      
               
  *             
  *          D - SD card status
  *          ================== 
  *           - At any time, you can check the SD Card status and get the SD card
  *             state by using the SD_GetStatus() function. This function checks
  *             first if the SD card is still connected and then get the internal
  *             SD Card transfer state.     
  *           - You can also get the SD card SD Status register by using the 
  *             SD_SendSDStatus() function.       
  *               
  *          E - Programming Model
  *          ===================== 
  *             Status = SD_Init(); // Initialization Step as described in section A
  *               
  *             // SDIO Interrupt ENABLE
  *             NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
  *             NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  *             NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  *             NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  *             NVIC_Init(&NVIC_InitStructure);
  *             
  *             // Write operation as described in Section C
  *             Status = SD_WriteBlock(buffer, address, 512);
  *             Status = SD_WaitWriteOperation();
  *             while(SD_GetStatus() != SD_TRANSFER_OK); 
  *             
  *             Status = SD_WriteMultiBlocks(buffer, address, 512, NUMBEROFBLOCKS);
  *             Status = SD_WaitWriteOperation();
  *             while(SD_GetStatus() != SD_TRANSFER_OK);     
  *             
  *             // Read operation as described in Section B
  *             Status = SD_ReadBlock(buffer, address, 512);
  *             Status = SD_WaitReadOperation();
  *             while(SD_GetStatus() != SD_TRANSFER_OK);
  *             
  *             Status = SD_ReadMultiBlocks(buffer, address, 512, NUMBEROFBLOCKS);
  *             Status = SD_WaitReadOperation();
  *             while(SD_GetStatus() != SD_TRANSFER_OK);            
  *               
  *                                     
  *          STM32 SDIO Pin assignment
  *          =========================    
  *          +-----------------------------------------------------------+
  *          |                     Pin assignment                        |
  *          +-----------------------------+---------------+-------------+
  *          |  STM32 SDIO Pins            |     SD        |    Pin      |
  *          +-----------------------------+---------------+-------------+
  *          |      SDIO D2                |   D2          |    1        |
  *          |      SDIO D3                |   D3          |    2        |
  *          |      SDIO CMD               |   CMD         |    3        |
  *          |                             |   VCC         |    4 (3.3 V)|
  *          |      SDIO CLK               |   CLK         |    5        |
  *          |                             |   GND         |    6 (0 V)  |
  *          |      SDIO D0                |   D0          |    7        |
  *          |      SDIO D1                |   D1          |    8        |  
  *          +-----------------------------+---------------+-------------+  
  *              
  *  @endverbatim                
  *             
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************  
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32_eval_sdio_sd.h"

/** @addtogroup Utilities
  * @{
  */
  
/** @addtogroup STM32_EVAL
  * @{
  */ 

/** @addtogroup Common
  * @{
  */
  
/** @addtogroup STM32_EVAL_SDIO_SD
  * @brief      This file provides all the SD Card driver firmware functions.
  * @{
  */ 

/** @defgroup STM32_EVAL_SDIO_SD_Private_Types
  * @{
  */ 
/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Defines
  * @{
  */ 
/** 
  * @brief  SDIO Static flags, TimeOut, FIFO Address  
  */
#define NULL 0
#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00010000)

/** 
  * @brief  Mask for errors Card Status R1 (OCR Register) 
  */
#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)
#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)
#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)
#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)
#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)
#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)
#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)
#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)
#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)
#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)
#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)
#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)
#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)
#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)
#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)
#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)
#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)
#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)
#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)
#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)

/** 
  * @brief  Masks for R6 Response 
  */
#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)
#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)
#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)

#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)
#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)
#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)
#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)

#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)
#define SD_ALLZERO                      ((uint32_t)0x00000000)

#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)
#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)
#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)

#define SD_DATATIMEOUT                  ((uint32_t)0xFFFFFFFF)
#define SD_0TO7BITS                     ((uint32_t)0x000000FF)
#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)
#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)
#define SD_24TO31BITS                   ((uint32_t)0xFF000000)
#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)

#define SD_HALFFIFO                     ((uint32_t)0x00000008)
#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)

/** 
  * @brief  Command Class Supported 
  */
#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)
#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)
#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)

/** 
  * @brief  Following commands are SD Card Specific commands.
  *         SDIO_APP_CMD should be sent before sending these commands. 
  */
#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)

/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Macros
  * @{
  */
/**
  * @}
  */ 
  

/** @defgroup STM32_EVAL_SDIO_SD_Private_Variables
  * @{
  */
static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
static uint8_t SDSTATUS_Tab[16];
__IO uint32_t StopCondition = 0;
__IO SD_Error TransferError = SD_OK;
__IO uint32_t TransferEnd = 0;
SD_CardInfo SDCardInfo;

SDIO_InitTypeDef SDIO_InitStructure;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;   
/**
  * @}			     
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Function_Prototypes
  * @{
  */
static SD_Error CmdError(void);
static SD_Error CmdResp1Error(uint8_t cmd);
static SD_Error CmdResp7Error(void);
static SD_Error CmdResp3Error(void);
static SD_Error CmdResp2Error(void);
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
static SD_Error SDEnWideBus(FunctionalState NewState);
static SD_Error IsCardProgramming(uint8_t *pstatus);
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
  
/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Functions
  * @{
  */  

/**
  * @brief  DeInitializes the SDIO interface.
  * @param  None
  * @retval None
  */
void SD_DeInit(void)
{ 
  SD_LowLevel_DeInit();
}

/**
  * @brief  Initializes the SD Card and put it into StandBy State (Ready for data 
  *         transfer).
  * @param  None
  * @retval SD_Error: SD Card Error code.
  */
SD_Error SD_Init(void)
{
  SD_Error errorstatus = SD_OK;
  
  /* SDIO Peripheral Low Level Init */
  SD_LowLevel_Init();

  SDIO_DeInit();

  errorstatus = SD_PowerON();

  if (errorstatus != SD_OK)
  {
    /*!< CMD Response TimeOut (wait for CMDSENT flag) */
    return(errorstatus);
  }

  errorstatus = SD_InitializeCards();