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rtt-f030/bsp/stm32f20x/Drivers/sdio_sd.c

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Re-normalizing the repo
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/**
******************************************************************************
* @file stm32_eval_sdio_sd.c
* @author MCD Application Team
* @version V4.6.1
* @date 18-April-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 "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)
{
__IO 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();
if (errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
/*!< Configure the SDIO peripheral */
/*!< SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_TRANSFER_CLK_DIV) */
/*!< on STM32F2xx devices, SDIOCLK is fixed to 48MHz */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
/*----------------- Read CSD/CID MSD registers ------------------*/
errorstatus = SD_GetCardInfo(&SDCardInfo);
if (errorstatus == SD_OK)
{
/*----------------- Select Card --------------------------------*/
errorstatus = SD_SelectDeselect((uint32_t) (SDCardInfo.RCA << 16));
}
if (errorstatus == SD_OK)
{
errorstatus = SD_EnableWideBusOperation(SDIO_BusWide_4b);
}
return(errorstatus);
}
/**
* @brief Gets the cuurent sd card data transfer status.
* @param None
* @retval SDTransferState: Data Transfer state.
* This value can be:
* - SD_TRANSFER_OK: No data transfer is acting
* - SD_TRANSFER_BUSY: Data transfer is acting
*/
SDTransferState SD_GetStatus(void)
{
SDCardState cardstate = SD_CARD_TRANSFER;
cardstate = SD_GetState();
if (cardstate == SD_CARD_TRANSFER)
{
return(SD_TRANSFER_OK);
}
else if(cardstate == SD_CARD_ERROR)
{
return (SD_TRANSFER_ERROR);
}
else
{
return(SD_TRANSFER_BUSY);
}
}
/**
* @brief Returns the current card's state.
* @param None
* @retval SDCardState: SD Card Error or SD Card Current State.
*/
SDCardState SD_GetState(void)
{
uint32_t resp1 = 0;
if(SD_Detect()== SD_PRESENT)
{
if (SD_SendStatus(&resp1) != SD_OK)
{
return SD_CARD_ERROR;
}
else
{
return (SDCardState)((resp1 >> 9) & 0x0F);
}
}
else
{
return SD_CARD_ERROR;
}
}
/**
* @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)
{
__IO uint8_t status = SD_PRESENT;
/*!< Check GPIO to detect SD */
/*if (GPIO_ReadInputDataBit(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != Bit_RESET)
{
status = SD_NOT_PRESENT;
} */
return status;
}
/**
* @brief Enquires cards about their operating voltage and configures
* clock controls.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_PowerON(void)
{
__IO SD_Error errorstatus = SD_OK;
uint32_t response = 0, count = 0, validvoltage = 0;
uint32_t SDType = SD_STD_CAPACITY;
/*!< Power ON Sequence -----------------------------------------------------*/
/*!< Configure the SDIO peripheral */
/*!< SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_INIT_CLK_DIV) */
/*!< on STM32F2xx devices, SDIOCLK is fixed to 48MHz */
/*!< SDIO_CK for initialization should not exceed 400 KHz */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
/*!< Set Power State to ON */
SDIO_SetPowerState(SDIO_PowerState_ON);
/*!< Enable SDIO Clock */
SDIO_ClockCmd(ENABLE);
/*!< CMD0: GO_IDLE_STATE ---------------------------------------------------*/
/*!< No CMD response required */
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdError();
if (errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
/*!< CMD8: SEND_IF_COND ----------------------------------------------------*/
/*!< Send CMD8 to verify SD card interface operating condition */
/*!< Argument: - [31:12]: Reserved (shall be set to '0')
- [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
- [7:0]: Check Pattern (recommended 0xAA) */
/*!< CMD Response: R7 */
SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp7Error();
if (errorstatus == SD_OK)
{
CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /*!< SD Card 2.0 */
SDType = SD_HIGH_CAPACITY;
}
else
{
/*!< CMD55 */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
}
/*!< CMD55 */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
/*!< If errorstatus is Command TimeOut, it is a MMC card */
/*!< If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
or SD card 1.x */
if (errorstatus == SD_OK)
{
/*!< SD CARD */
/*!< Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
{
/*!< SEND CMD55 APP_CMD with RCA as 0 */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp3Error();
if (errorstatus != SD_OK)
{
return(errorstatus);
}
response = SDIO_GetResponse(SDIO_RESP1);
validvoltage = (((response >> 31) == 1) ? 1 : 0);
count++;
}
if (count >= SD_MAX_VOLT_TRIAL)
{
errorstatus = SD_INVALID_VOLTRANGE;
return(errorstatus);
}
if (response &= SD_HIGH_CAPACITY)
{
CardType = SDIO_HIGH_CAPACITY_SD_CARD;
}
}/*!< else MMC Card */
return(errorstatus);
}
/**
* @brief Turns the SDIO output signals off.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_PowerOFF(void)
{
SD_Error errorstatus = SD_OK;
/*!< Set Power State to OFF */
SDIO_SetPowerState(SDIO_PowerState_OFF);
return(errorstatus);
}
/**
* @brief Intialises all cards or single card as the case may be Card(s) come
* into standby state.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_InitializeCards(void)
{
SD_Error errorstatus = SD_OK;
uint16_t rca = 0x01;
if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
{
/*!< Send CMD2 ALL_SEND_CID */
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp2Error();
if (SD_OK != errorstatus)
{
return(errorstatus);
}
CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
}
if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
|| (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
/*!< Send CMD3 SET_REL_ADDR with argument 0 */
/*!< SD Card publishes its RCA. */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp6Error(SD_CMD_SET_REL_ADDR, &rca);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
}
if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
{
RCA = rca;
/*!< Send CMD9 SEND_CSD with argument as card's RCA */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp2Error();
if (SD_OK != errorstatus)
{
return(errorstatus);
}
CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
}
errorstatus = SD_OK; /*!< All cards get intialized */
return(errorstatus);
}
/**
* @brief Returns information about specific card.
* @param cardinfo: pointer to a SD_CardInfo structure that contains all SD card
* information.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
{
SD_Error errorstatus = SD_OK;
uint8_t tmp = 0;
cardinfo->CardType = (uint8_t)CardType;
cardinfo->RCA = (uint16_t)RCA;
/*!< Byte 0 */
tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
cardinfo->SD_csd.Reserved1 = tmp & 0x03;
/*!< Byte 1 */
tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_csd.TAAC = tmp;
/*!< Byte 2 */
tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
cardinfo->SD_csd.NSAC = tmp;
/*!< Byte 3 */
tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
cardinfo->SD_csd.MaxBusClkFrec = tmp;
/*!< Byte 4 */
tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_csd.CardComdClasses = tmp << 4;
/*!< Byte 5 */
tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
/*!< Byte 6 */
tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */
if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
{
cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
/*!< Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
/*!< Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
/*!< Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
/*!< Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
cardinfo->CardCapacity *= cardinfo->CardBlockSize;
}
else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
/*!< Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
/*!< Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp << 8);
/*!< Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.DeviceSize |= (tmp);
/*!< Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
cardinfo->CardBlockSize = 512;
}
cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
/*!< Byte 11 */
tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
/*!< Byte 12 */
tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
/*!< Byte 13 */
tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
cardinfo->SD_csd.Reserved3 = 0;
cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
/*!< Byte 14 */
tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
cardinfo->SD_csd.ECC = (tmp & 0x03);
/*!< Byte 15 */
tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_csd.Reserved4 = 1;
/*!< Byte 0 */
tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_cid.ManufacturerID = tmp;
/*!< Byte 1 */
tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_cid.OEM_AppliID = tmp << 8;
/*!< Byte 2 */
tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
cardinfo->SD_cid.OEM_AppliID |= tmp;
/*!< Byte 3 */
tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
cardinfo->SD_cid.ProdName1 = tmp << 24;
/*!< Byte 4 */
tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdName1 |= tmp << 16;
/*!< Byte 5 */
tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdName1 |= tmp << 8;
/*!< Byte 6 */
tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdName1 |= tmp;
/*!< Byte 7 */
tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
cardinfo->SD_cid.ProdName2 = tmp;
/*!< Byte 8 */
tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdRev = tmp;
/*!< Byte 9 */
tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdSN = tmp << 24;
/*!< Byte 10 */
tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdSN |= tmp << 16;
/*!< Byte 11 */
tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
cardinfo->SD_cid.ProdSN |= tmp << 8;
/*!< Byte 12 */
tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdSN |= tmp;
/*!< Byte 13 */
tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
/*!< Byte 14 */
tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ManufactDate |= tmp;
/*!< Byte 15 */
tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_cid.Reserved2 = 1;
return(errorstatus);
}
/**
* @brief Enables wide bus opeartion for the requeseted card if supported by
* card.
* @param WideMode: Specifies the SD card wide bus mode.
* This parameter can be one of the following values:
* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
* @arg SDIO_BusWide_4b: 4-bit data transfer
* @arg SDIO_BusWide_1b: 1-bit data transfer
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus)
{
SD_Error errorstatus = SD_OK;
uint8_t tmp = 0;
errorstatus = SD_SendSDStatus((uint32_t *)SDSTATUS_Tab);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Byte 0 */
tmp = (uint8_t)((SDSTATUS_Tab[0] & 0xC0) >> 6);
cardstatus->DAT_BUS_WIDTH = tmp;
/*!< Byte 0 */
tmp = (uint8_t)((SDSTATUS_Tab[0] & 0x20) >> 5);
cardstatus->SECURED_MODE = tmp;
/*!< Byte 2 */
tmp = (uint8_t)((SDSTATUS_Tab[2] & 0xFF));
cardstatus->SD_CARD_TYPE = tmp << 8;
/*!< Byte 3 */
tmp = (uint8_t)((SDSTATUS_Tab[3] & 0xFF));
cardstatus->SD_CARD_TYPE |= tmp;
/*!< Byte 4 */
tmp = (uint8_t)(SDSTATUS_Tab[4] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA = tmp << 24;
/*!< Byte 5 */
tmp = (uint8_t)(SDSTATUS_Tab[5] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 16;
/*!< Byte 6 */
tmp = (uint8_t)(SDSTATUS_Tab[6] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 8;
/*!< Byte 7 */
tmp = (uint8_t)(SDSTATUS_Tab[7] & 0xFF);
cardstatus->SIZE_OF_PROTECTED_AREA |= tmp;
/*!< Byte 8 */
tmp = (uint8_t)((SDSTATUS_Tab[8] & 0xFF));
cardstatus->SPEED_CLASS = tmp;
/*!< Byte 9 */
tmp = (uint8_t)((SDSTATUS_Tab[9] & 0xFF));
cardstatus->PERFORMANCE_MOVE = tmp;
/*!< Byte 10 */
tmp = (uint8_t)((SDSTATUS_Tab[10] & 0xF0) >> 4);
cardstatus->AU_SIZE = tmp;
/*!< Byte 11 */
tmp = (uint8_t)(SDSTATUS_Tab[11] & 0xFF);
cardstatus->ERASE_SIZE = tmp << 8;
/*!< Byte 12 */
tmp = (uint8_t)(SDSTATUS_Tab[12] & 0xFF);
cardstatus->ERASE_SIZE |= tmp;
/*!< Byte 13 */
tmp = (uint8_t)((SDSTATUS_Tab[13] & 0xFC) >> 2);
cardstatus->ERASE_TIMEOUT = tmp;
/*!< Byte 13 */
tmp = (uint8_t)((SDSTATUS_Tab[13] & 0x3));
cardstatus->ERASE_OFFSET = tmp;
return(errorstatus);
}
/**
* @brief Enables wide bus opeartion for the requeseted card if supported by
* card.
* @param WideMode: Specifies the SD card wide bus mode.
* This parameter can be one of the following values:
* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
* @arg SDIO_BusWide_4b: 4-bit data transfer
* @arg SDIO_BusWide_1b: 1-bit data transfer
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
{
SD_Error errorstatus = SD_OK;
/*!< MMC Card doesn't support this feature */
if (SDIO_MULTIMEDIA_CARD == CardType)
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return(errorstatus);
}
else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
if (SDIO_BusWide_8b == WideMode)
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return(errorstatus);
}
else if (SDIO_BusWide_4b == WideMode)
{
errorstatus = SDEnWideBus(ENABLE);
if (SD_OK == errorstatus)
{
/*!< Configure the SDIO peripheral */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
}
}
else
{
errorstatus = SDEnWideBus(DISABLE);
if (SD_OK == errorstatus)
{
/*!< Configure the SDIO peripheral */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
}
}
}
return(errorstatus);
}
/**
* @brief Selects od Deselects the corresponding card.
* @param addr: Address of the Card to be selected.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SelectDeselect(uint32_t addr)
{
SD_Error errorstatus = SD_OK;
/*!< Send CMD7 SDIO_SEL_DESEL_CARD */
SDIO_CmdInitStructure.SDIO_Argument = addr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SEL_DESEL_CARD);
return(errorstatus);
}
/**
* @brief Allows to read one block from a specified address in a card. The Data
* transfer can be managed by DMA mode or Polling mode.
* @note This 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.
* @param readbuff: pointer to the buffer that will contain the received data
* @param ReadAddr: Address from where data are to be read.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadBlock(uint32_t ReadAddr, uint8_t *readbuff, uint16_t BlockSize)
{
SD_Error errorstatus = SD_OK;
#if defined (SD_POLLING_MODE)
uint32_t count = 0, *tempbuff = (uint32_t *)readbuff;
#endif
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 0;
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
//ReadAddr /= 512;
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send CMD17 READ_SINGLE_BLOCK */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
#if defined (SD_POLLING_MODE)
/*!< In case of single block transfer, no need of stop transfer at all.*/
/*!< Polling mode */
while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
{
for (count = 0; count < 8; count++)
{
*(tempbuff + count) = SDIO_ReadData();
}
tempbuff += 8;
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
errorstatus = SD_RX_OVERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
{
*tempbuff = SDIO_ReadData();
tempbuff++;
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
#elif defined (SD_DMA_MODE)
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
SDIO_DMACmd(ENABLE);
SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, BlockSize);
#endif
return(errorstatus);
}
/**
* @brief Allows to read blocks from a specified address in a card. The Data
* transfer can be managed by DMA mode or Polling mode.
* @note This 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.
* @param readbuff: pointer to the buffer that will contain the received data.
* @param ReadAddr: Address from where data are to be read.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @param NumberOfBlocks: number of blocks to be read.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadMultiBlocks(uint32_t ReadAddr, uint8_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
SD_Error errorstatus = SD_OK;
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 1;
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
//ReadAddr /= 512;
}
/*!< Set Block Size for Card */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send CMD18 READ_MULT_BLOCK with argument data address */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
SDIO_DMACmd(ENABLE);
SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, (NumberOfBlocks * BlockSize));
return(errorstatus);
}
/**
* @brief This function waits until the SDIO DMA data transfer is finished.
* This function should be called after SDIO_ReadMultiBlocks() function
* to insure that all data sent by the card are already transferred by
* the DMA controller.
* @param None.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WaitReadOperation(void)
{
SD_Error errorstatus = SD_OK;
while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))
{}
if (TransferError != SD_OK)
{
return(TransferError);
}
return(errorstatus);
}
/**
* @brief Allows to write one block starting from a specified address in a card.
* The Data transfer can be managed by DMA mode or Polling mode.
* @note This 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.
* @param writebuff: pointer to the buffer that contain the data to be transferred.
* @param WriteAddr: Address from where data are to be read.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteBlock(uint32_t WriteAddr, uint8_t *writebuff, uint16_t BlockSize)
{
SD_Error errorstatus = SD_OK;
#if defined (SD_POLLING_MODE)
uint32_t bytestransferred = 0, count = 0, restwords = 0;
uint32_t *tempbuff = (uint32_t *)writebuff;
#endif
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 0;
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
//WriteAddr /= 512;
}
/*!< Send CMD24 WRITE_SINGLE_BLOCK */
SDIO_CmdInitStructure.SDIO_Argument = WriteAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< In case of single data block transfer no need of stop command at all */
#if defined (SD_POLLING_MODE)
while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
{
if ((512 - bytestransferred) < 32)
{
restwords = ((512 - bytestransferred) % 4 == 0) ? ((512 - bytestransferred) / 4) : (( 512 - bytestransferred) / 4 + 1);
for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
{
SDIO_WriteData(*tempbuff);
}
}
else
{
for (count = 0; count < 8; count++)
{
SDIO_WriteData(*(tempbuff + count));
}
tempbuff += 8;
bytestransferred += 32;
}
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
errorstatus = SD_TX_UNDERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
#elif defined (SD_DMA_MODE)
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, BlockSize);
SDIO_DMACmd(ENABLE);
#endif
return(errorstatus);
}
/**
* @brief Allows to write blocks starting from a specified address in a card.
* The Data transfer can be managed by DMA mode only.
* @note This 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.
* @param WriteAddr: Address from where data are to be read.
* @param writebuff: pointer to the buffer that contain the data to be transferred.
* @param BlockSize: the SD card Data block size. The Block size should be 512.
* @param NumberOfBlocks: number of blocks to be written.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteMultiBlocks(uint32_t WriteAddr, uint8_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
SD_Error errorstatus = SD_OK;
TransferError = SD_OK;
TransferEnd = 0;
StopCondition = 1;
SDIO->DCTRL = 0x0;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
//WriteAddr /= 512;
}
/*!< To improve performance */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< To improve performance */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);
if (SD_OK != errorstatus)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
SDIO_DMACmd(ENABLE);
SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));
return(errorstatus);
}
/**
* @brief This function waits until the SDIO DMA data transfer is finished.
* This function should be called after SDIO_WriteBlock() and
* SDIO_WriteMultiBlocks() function to insure that all data sent by the
* card are already transferred by the DMA controller.
* @param None.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WaitWriteOperation(void)
{
SD_Error errorstatus = SD_OK;
while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))
{}
if (TransferError != SD_OK)
{
return(TransferError);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/**
* @brief Gets the cuurent data transfer state.
* @param None
* @retval SDTransferState: Data Transfer state.
* This value can be:
* - SD_TRANSFER_OK: No data transfer is acting
* - SD_TRANSFER_BUSY: Data transfer is acting
*/
SDTransferState SD_GetTransferState(void)
{
if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
{
return(SD_TRANSFER_BUSY);
}
else
{
return(SD_TRANSFER_OK);
}
}
/**
* @brief Aborts an ongoing data transfer.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_StopTransfer(void)
{
SD_Error errorstatus = SD_OK;
/*!< Send CMD12 STOP_TRANSMISSION */
SDIO->ARG = 0x0;
SDIO->CMD = 0x44C;
errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
return(errorstatus);
}
/**
* @brief Allows to erase memory area specified for the given card.
* @param startaddr: the start address.
* @param endaddr: the end address.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
{
SD_Error errorstatus = SD_OK;
uint32_t delay = 0;
__IO uint32_t maxdelay = 0;
uint8_t cardstate = 0;
/*!< Check if the card coomnd class supports erase command */
if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
startaddr /= 512;
endaddr /= 512;
}
/*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
/*!< Send CMD32 SD_ERASE_GRP_START with argument as addr */
SDIO_CmdInitStructure.SDIO_Argument = startaddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send CMD33 SD_ERASE_GRP_END with argument as addr */
SDIO_CmdInitStructure.SDIO_Argument = endaddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_END);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
}
/*!< Send CMD38 ERASE */
SDIO_CmdInitStructure.SDIO_Argument = 0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ERASE;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_ERASE);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
for (delay = 0; delay < maxdelay; delay++)
{}
/*!< Wait till the card is in programming state */
errorstatus = IsCardProgramming(&cardstate);
while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
{
errorstatus = IsCardProgramming(&cardstate);
}
return(errorstatus);
}
/**
* @brief Returns the current card's status.
* @param pcardstatus: pointer to the buffer that will contain the SD card
* status (Card Status register).
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SendStatus(uint32_t *pcardstatus)
{
SD_Error errorstatus = SD_OK;
SDIO->ARG = (uint32_t) RCA << 16;
SDIO->CMD = 0x44D;
errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
*pcardstatus = SDIO->RESP1;
return(errorstatus);
}
/**
* @brief Returns the current SD card's status.
* @param psdstatus: pointer to the buffer that will contain the SD card status
* (SD Status register).
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SendSDStatus(uint32_t *psdstatus)
{
SD_Error errorstatus = SD_OK;
uint32_t count = 0;
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
/*!< Set block size for card if it is not equal to current block size for card. */
SDIO_CmdInitStructure.SDIO_Argument = 64;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< CMD55 */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = 64;
SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send ACMD13 SD_APP_STAUS with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = 0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_APP_STAUS);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
{
for (count = 0; count < 8; count++)
{
*(psdstatus + count) = SDIO_ReadData();
}
psdstatus += 8;
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
errorstatus = SD_RX_OVERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
{
*psdstatus = SDIO_ReadData();
psdstatus++;
}
/*!< Clear all the static status flags*/
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/**
* @brief Allows to process all the interrupts that are high.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ProcessIRQSrc(void)
{
if (StopCondition == 1)
{
SDIO->ARG = 0x0;
SDIO->CMD = 0x44C;
TransferError = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
}
else
{
TransferError = SD_OK;
}
SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
SDIO_ITConfig(SDIO_IT_DATAEND, DISABLE);
TransferEnd = 1;
return(TransferError);
}
/**
* @brief Checks for error conditions for CMD0.
* @param None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdError(void)
{
SD_Error errorstatus = SD_OK;
uint32_t timeout;
timeout = SDIO_CMD0TIMEOUT; /*!< 10000 */
while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
{
timeout--;
}
if (timeout == 0)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/**
* @brief Checks for error conditions for R7 response.
* @param None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp7Error(void)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
uint32_t timeout = SDIO_CMD0TIMEOUT;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
{
timeout--;
status = SDIO->STA;
}
if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
{
/*!< Card is not V2.0 complient or card does not support the set voltage range */
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
if (status & SDIO_FLAG_CMDREND)
{
/*!< Card is SD V2.0 compliant */
errorstatus = SD_OK;
SDIO_ClearFlag(SDIO_FLAG_CMDREND);
return(errorstatus);
}
return(errorstatus);
}
/**
* @brief Checks for error conditions for R1 response.
* @param cmd: The sent command index.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp1Error(uint8_t cmd)
{
while (!(SDIO->STA & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
{
}
SDIO->ICR = SDIO_STATIC_FLAGS;
return (SD_Error)(SDIO->RESP1 & SD_OCR_ERRORBITS);
}
/**
* @brief Checks for error conditions for R3 (OCR) response.
* @param None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp3Error(void)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/**
* @brief Checks for error conditions for R2 (CID or CSD) response.
* @param None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp2Error(void)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
else if (status & SDIO_FLAG_CCRCFAIL)
{
errorstatus = SD_CMD_CRC_FAIL;
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
return(errorstatus);
}
/**
* @brief Checks for error conditions for R6 (RCA) response.
* @param cmd: The sent command index.
* @param prca: pointer to the variable that will contain the SD card relative
* address RCA.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
{
SD_Error errorstatus = SD_OK;
uint32_t status;
uint32_t response_r1;
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
else if (status & SDIO_FLAG_CCRCFAIL)
{
errorstatus = SD_CMD_CRC_FAIL;
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
return(errorstatus);
}
/*!< Check response received is of desired command */
if (SDIO_GetCommandResponse() != cmd)
{
errorstatus = SD_ILLEGAL_CMD;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
/*!< We have received response, retrieve it. */
response_r1 = SDIO_GetResponse(SDIO_RESP1);
if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
{
*prca = (uint16_t) (response_r1 >> 16);
return(errorstatus);
}
if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
{
return(SD_GENERAL_UNKNOWN_ERROR);
}
if (response_r1 & SD_R6_ILLEGAL_CMD)
{
return(SD_ILLEGAL_CMD);
}
if (response_r1 & SD_R6_COM_CRC_FAILED)
{
return(SD_COM_CRC_FAILED);
}
return(errorstatus);
}
/**
* @brief Enables or disables the SDIO wide bus mode.
* @param NewState: new state of the SDIO wide bus mode.
* This parameter can be: ENABLE or DISABLE.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error SDEnWideBus(FunctionalState NewState)
{
SD_Error errorstatus = SD_OK;
uint32_t scr[2] = {0, 0};
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
/*!< Get SCR Register */
errorstatus = FindSCR(RCA, scr);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< If wide bus operation to be enabled */
if (NewState == ENABLE)
{
/*!< If requested card supports wide bus operation */
if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
{
/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
SDIO_CmdInitStructure.SDIO_Argument = 0x2;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
return(errorstatus);
}
else
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
} /*!< If wide bus operation to be disabled */
else
{
/*!< If requested card supports 1 bit mode operation */
if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
{
/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
return(errorstatus);
}
else
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
}
}
/**
* @brief Checks if the SD card is in programming state.
* @param pstatus: pointer to the variable that will contain the SD card state.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error IsCardProgramming(uint8_t *pstatus)
{
SD_Error errorstatus = SD_OK;
__IO uint32_t respR1 = 0, status = 0;
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
status = SDIO->STA;
while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
{
status = SDIO->STA;
}
if (status & SDIO_FLAG_CTIMEOUT)
{
errorstatus = SD_CMD_RSP_TIMEOUT;
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(errorstatus);
}
else if (status & SDIO_FLAG_CCRCFAIL)
{
errorstatus = SD_CMD_CRC_FAIL;
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
return(errorstatus);
}
status = (uint32_t)SDIO_GetCommandResponse();
/*!< Check response received is of desired command */
if (status != SD_CMD_SEND_STATUS)
{
errorstatus = SD_ILLEGAL_CMD;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
/*!< We have received response, retrieve it for analysis */
respR1 = SDIO_GetResponse(SDIO_RESP1);
/*!< Find out card status */
*pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);
if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
{
return(errorstatus);
}
if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
{
return(SD_ADDR_OUT_OF_RANGE);
}
if (respR1 & SD_OCR_ADDR_MISALIGNED)
{
return(SD_ADDR_MISALIGNED);
}
if (respR1 & SD_OCR_BLOCK_LEN_ERR)
{
return(SD_BLOCK_LEN_ERR);
}
if (respR1 & SD_OCR_ERASE_SEQ_ERR)
{
return(SD_ERASE_SEQ_ERR);
}
if (respR1 & SD_OCR_BAD_ERASE_PARAM)
{
return(SD_BAD_ERASE_PARAM);
}
if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
{
return(SD_WRITE_PROT_VIOLATION);
}
if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
{
return(SD_LOCK_UNLOCK_FAILED);
}
if (respR1 & SD_OCR_COM_CRC_FAILED)
{
return(SD_COM_CRC_FAILED);
}
if (respR1 & SD_OCR_ILLEGAL_CMD)
{
return(SD_ILLEGAL_CMD);
}
if (respR1 & SD_OCR_CARD_ECC_FAILED)
{
return(SD_CARD_ECC_FAILED);
}
if (respR1 & SD_OCR_CC_ERROR)
{
return(SD_CC_ERROR);
}
if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
{
return(SD_GENERAL_UNKNOWN_ERROR);
}
if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
{
return(SD_STREAM_READ_UNDERRUN);
}
if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
{
return(SD_STREAM_WRITE_OVERRUN);
}
if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
{
return(SD_CID_CSD_OVERWRITE);
}
if (respR1 & SD_OCR_WP_ERASE_SKIP)
{
return(SD_WP_ERASE_SKIP);
}
if (respR1 & SD_OCR_CARD_ECC_DISABLED)
{
return(SD_CARD_ECC_DISABLED);
}
if (respR1 & SD_OCR_ERASE_RESET)
{
return(SD_ERASE_RESET);
}
if (respR1 & SD_OCR_AKE_SEQ_ERROR)
{
return(SD_AKE_SEQ_ERROR);
}
return(errorstatus);
}
/**
* @brief Find the SD card SCR register value.
* @param rca: selected card address.
* @param pscr: pointer to the buffer that will contain the SCR value.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
{
uint32_t index = 0;
SD_Error errorstatus = SD_OK;
uint32_t tempscr[2] = {0, 0};
/*!< Set Block Size To 8 Bytes */
/*!< Send CMD55 APP_CMD with argument as card's RCA */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
/*!< Send CMD55 APP_CMD with argument as card's RCA */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
SDIO_DataInitStructure.SDIO_DataLength = 8;
SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
SDIO_DataConfig(&SDIO_DataInitStructure);
/*!< Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
SDIO_SendCommand(&SDIO_CmdInitStructure);
errorstatus = CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);
if (errorstatus != SD_OK)
{
return(errorstatus);
}
while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
{
if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
{
*(tempscr + index) = SDIO_ReadData();
index++;
}
}
if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
errorstatus = SD_DATA_TIMEOUT;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
errorstatus = SD_DATA_CRC_FAIL;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
errorstatus = SD_RX_OVERRUN;
return(errorstatus);
}
else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
{
SDIO_ClearFlag(SDIO_FLAG_STBITERR);
errorstatus = SD_START_BIT_ERR;
return(errorstatus);
}
/*!< Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
*(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
*(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
return(errorstatus);
}
/**
* @brief Converts the number of bytes in power of two and returns the power.
* @param NumberOfBytes: number of bytes.
* @retval None
*/
uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
{
uint8_t count = 0;
while (NumberOfBytes != 1)
{
NumberOfBytes >>= 1;
count++;
}
return(count);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
/*
* RT-Thread SD Card Driver
* 20100715 Bernard support SDHC card great than 4G.
* 20110905 JoyChen support to STM32F2xx
*/
#include <rtthread.h>
#include <dfs_fs.h>
/* set sector size to 512 */
#define SECTOR_SIZE 512
static struct rt_device sdcard_device;
//static SD_CardInfo SDCardInfo;
static struct dfs_partition part;
static struct rt_semaphore sd_lock;
static rt_uint8_t _sdcard_buffer[SECTOR_SIZE];
/* RT-Thread Device Driver Interface */
static rt_err_t rt_sdcard_init(rt_device_t dev)
{
/* NVIC_InitTypeDef NVIC_InitStructure;
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); */
if (rt_sem_init(&sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
{
rt_kprintf("init sd lock semaphore failed\n");
}
else
rt_kprintf("SD Card init OK\n");
return RT_EOK;
}
static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t rt_sdcard_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
SD_Error status;
rt_uint32_t retry;
rt_uint32_t factor;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) factor = 1;
else factor = SECTOR_SIZE;
//rt_kprintf("sd: read 0x%X, sector 0x%X, 0x%X\n", (uint32_t)buffer ,pos, size);
rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
retry = 3;
while(retry)
{
/* read all sectors */
if (((rt_uint32_t)buffer % 4 != 0) ||
((rt_uint32_t)buffer > 0x20080000))
{
rt_uint32_t index;
/* which is not alignment with 4 or chip SRAM */
for (index = 0; index < size; index ++)
{
status = SD_ReadBlock((part.offset + index + pos) * factor,
(uint8_t*)_sdcard_buffer, SECTOR_SIZE);
status = SD_WaitReadOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
if (status != SD_OK) break;
/* copy to the buffer */
rt_memcpy(((rt_uint8_t*)buffer + index * SECTOR_SIZE), _sdcard_buffer, SECTOR_SIZE);
}
}
else
{
if (size == 1)
{
status = SD_ReadBlock((part.offset + pos) * factor,
(uint8_t*)buffer, SECTOR_SIZE);
}
else
{
status = SD_ReadMultiBlocks((part.offset + pos) * factor,
(uint8_t*)buffer, SECTOR_SIZE, size);
}
status = SD_WaitReadOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
/*rt_kprintf("===DUMP SECTOR %d===\n",pos);
{
int i, j;
char* tmp = (char*)buffer;
for(i =0; i < 32;i++)
{
rt_kprintf("%2d: ",i);
for(j= 0; j < 16;j++)
rt_kprintf("%02X ",tmp[i*16+j]);
rt_kprintf("\n");
}
} */
}
if (status == SD_OK) break;
retry --;
}
rt_sem_release(&sd_lock);
if (status == SD_OK) return size;
rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
return 0;
}
static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
{
SD_Error status;
rt_uint32_t factor;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) factor = 1;
else factor = SECTOR_SIZE;
//rt_kprintf("sd: write 0x%X, sector 0x%X, 0x%X\n", (uint32_t)buffer , pos, size);
rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
/* read all sectors */
if (((rt_uint32_t)buffer % 4 != 0) ||
((rt_uint32_t)buffer > 0x20080000))
{
rt_uint32_t index;
/* which is not alignment with 4 or not chip SRAM */
for (index = 0; index < size; index ++)
{
/* copy to the buffer */
rt_memcpy(_sdcard_buffer, ((rt_uint8_t*)buffer + index * SECTOR_SIZE), SECTOR_SIZE);
status = SD_WriteBlock((part.offset + index + pos) * factor,
(uint8_t*)_sdcard_buffer, SECTOR_SIZE);
status = SD_WaitWriteOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
if (status != SD_OK) break;
}
}
else
{
if (size == 1)
{
status = SD_WriteBlock((part.offset + pos) * factor,
(uint8_t*)buffer, SECTOR_SIZE);
}
else
{
status = SD_WriteMultiBlocks((part.offset + pos) * factor,
(uint8_t*)buffer, SECTOR_SIZE, size);
}
status = SD_WaitWriteOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
}
rt_sem_release(&sd_lock);
if (status == SD_OK) return size;
rt_kprintf("write failed: %d, buffer 0x%08x\n", status, buffer);
return 0;
}
static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
RT_ASSERT(dev != RT_NULL);
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
{
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL) return -RT_ERROR;
geometry->bytes_per_sector = 512;
geometry->block_size = SDCardInfo.CardBlockSize;
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
geometry->sector_count = (SDCardInfo.SD_csd.DeviceSize + 1) * 1024;
else
geometry->sector_count = SDCardInfo.CardCapacity/SDCardInfo.CardBlockSize;
}
return RT_EOK;
}
void rt_hw_sdcard_init()
{
NVIC_InitTypeDef NVIC_InitStructure;
if (SD_Init() == SD_OK)
{
SD_Error status;
rt_uint8_t *sector;
/*status = SD_GetCardInfo(&SDCardInfo);
if (status != SD_OK) goto __return;
status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
if (status != SD_OK) goto __return;
SD_EnableWideBusOperation(SDIO_BusWide_4b);
SD_SetDeviceMode(SD_DMA_MODE); */
// 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);
/* get the first sector to read partition table */
sector = (rt_uint8_t*) rt_malloc (512);
if (sector == RT_NULL)
{
rt_kprintf("allocate partition sector buffer failed\n");
return;
}
status = SD_ReadBlock(0, (uint8_t*)sector, 512);
status = SD_WaitReadOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
if (status == SD_OK)
{
/* get the first partition */
if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
{
/* there is no partition */
part.offset = 0;
part.size = 0;
}
}
else
{
/* there is no partition table */
part.offset = 0;
part.size = 0;
}
/* release sector buffer */
rt_free(sector);
/* register sdcard device */
sdcard_device.type = RT_Device_Class_Block;
sdcard_device.init = rt_sdcard_init;
sdcard_device.open = rt_sdcard_open;
sdcard_device.close = rt_sdcard_close;
sdcard_device.read = rt_sdcard_read;
sdcard_device.write = rt_sdcard_write;
sdcard_device.control = rt_sdcard_control;
/* no private */
sdcard_device.user_data = &SDCardInfo;
rt_device_register(&sdcard_device, "sd0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
return;
}
__return:
rt_kprintf("sdcard init failed\n");
}