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fatfs_sd_sdio.c
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fatfs_sd_sdio.c
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/**
******************************************************************************
* @file stm324x9i_eval_sdio_sd.c
* @author MCD Application Team
* @version V1.0.3
* @date 13-November-2013
* @brief This file provides a set of functions needed to manage the SDIO SD
* Card memory mounted on STM324x9I-EVAL evaluation board.
*
*
* @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 stm324x9i_eval.h file, and the initialization is
* performed in SD_LowLevel_Init() function declared in stm324x9i_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 provides 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 stm324x9i_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 doesn't exceed 400KHz.
*
* 2 - Get the SD CID and CSD data. All these information are
* managed by the SDCardInfo structure. This structure provides
* 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 stm324x9i_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 doesn'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 functions : SD_ReadBlock() and
* SD_ReadMultiBlocks() functions. These functions support only
* 512-byte block length.
* - The SD_ReadBlock() function reads 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 stm324x9i_eval_sdio_sd.h
* file and uncomment the corresponding line. By default the SD DMA
* mode is selected
* - The SD_ReadMultiBlocks() function reads 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()
* and SD_ProcessDMAIRQ() function inside the DMA2_Streamx_IRQHandler().
* Don't forget to enable the SDIO_IRQn and DMA2_Stream3_IRQn or
* DMA2_Stream6_IRQn interrupts 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 stm324x9i_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()
* and SD_ProcessDMAIRQ() function inside the DMA2_Streamx_IRQHandler().
* Don't forget to enable the SDIO_IRQn and DMA2_Stream3_IRQn or
* DMA2_Stream6_IRQn interrupts 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 (Selecting DMA for SDIO data Transfer)
* ============================================================
* 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);
* // DMA2 STREAMx Interrupt ENABLE
* NVIC_InitStructure.NVIC_IRQChannel = SD_SDIO_DMA_IRQn;
* NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
* 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);
*
* - Add the SDIO and DMA2 StreamX (3 or 6) IRQ Handlers:
* void SDIO_IRQHandler(void)
* {
* SD_ProcessIRQ();
* }
* void SD_SDIO_DMA_IRQHANDLER(void)
* {
* SD_ProcessDMAIRQ();
* }
*
* F - Programming Model (Selecting Polling for SDIO data Transfer)
* ================================================================
* //Only SD Card Single Block operation are managed.
* Status = SD_Init(); // Initialization Step as described in section
*
* // Write operation as described in Section C
* Status = SD_WriteBlock(buffer, address, 512);
*
* // Read operation as described in Section B
* Status = SD_ReadBlock(buffer, address, 512);
*
* 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
*
* <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
//#include "stm324x9i_eval_ioe16.h"
#include "stm32f4xx.h"
#include "fatfs_sd_sdio.h"
#include <string.h>
/*
#include "tm_stm32f4_usart.h"
#define logf(x) TM_USART_Puts(USART1, x); TM_USART_Puts(USART1, "\n");
*/
#define logf(x)
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, DMAEndOfTransfer = 0;
SD_CardInfo SDCardInfo;
SDIO_InitTypeDef SDIO_InitStructure;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
/**
* @}
*/
/** @defgroup STM324x9I_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);
static volatile DSTATUS TM_FATFS_SD_SDIO_Stat = STA_NOINIT; /* Physical drive status */
#define BLOCK_SIZE 512
uint8_t TM_FATFS_SDIO_WriteEnabled(void) {
#if FATFS_USE_WRITEPROTECT_PIN > 0
return !TM_GPIO_GetInputPinValue(FATFS_USE_WRITEPROTECT_PIN_PORT, FATFS_USE_WRITEPROTECT_PIN_PIN);
#else
return 1;
#endif
}
DSTATUS TM_FATFS_SD_SDIO_disk_initialize(void) {
NVIC_InitTypeDef NVIC_InitStructure;
/* Detect pin */
#if FATFS_USE_DETECT_PIN > 0
TM_GPIO_Init(FATFS_USE_DETECT_PIN_PORT, FATFS_USE_DETECT_PIN_PIN, TM_GPIO_Mode_IN, TM_GPIO_OType_PP, TM_GPIO_PuPd_UP, TM_GPIO_Speed_Low);
#endif
/* Write protect pin */
#if FATFS_USE_WRITEPROTECT_PIN > 0
TM_GPIO_Init(FATFS_USE_WRITEPROTECT_PIN_PORT, FATFS_USE_WRITEPROTECT_PIN_PIN, TM_GPIO_Mode_IN, TM_GPIO_OType_PP, TM_GPIO_PuPd_UP, TM_GPIO_Speed_Low);
#endif
// Configure the NVIC Preemption Priority Bits
NVIC_PriorityGroupConfig (NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init (&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = SD_SDIO_DMA_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_Init (&NVIC_InitStructure);
SD_LowLevel_DeInit();
SD_LowLevel_Init();
//Check disk initialized
if (SD_Init() == SD_OK) {
TM_FATFS_SD_SDIO_Stat &= ~STA_NOINIT; /* Clear STA_NOINIT flag */
} else {
TM_FATFS_SD_SDIO_Stat |= STA_NOINIT;
}
//Check write protected
if (!TM_FATFS_SDIO_WriteEnabled()) {
TM_FATFS_SD_SDIO_Stat |= STA_PROTECT;
} else {
TM_FATFS_SD_SDIO_Stat &= ~STA_PROTECT;
}
return TM_FATFS_SD_SDIO_Stat;
}
DSTATUS TM_FATFS_SD_SDIO_disk_status(void) {
if (SD_Detect() != SD_PRESENT) {
return STA_NOINIT;
}
if (!TM_FATFS_SDIO_WriteEnabled()) {
TM_FATFS_SD_SDIO_Stat |= STA_PROTECT;
} else {
TM_FATFS_SD_SDIO_Stat &= ~STA_PROTECT;
}
return TM_FATFS_SD_SDIO_Stat;
}
DRESULT TM_FATFS_SD_SDIO_disk_read(BYTE *buff, DWORD sector, UINT count) {
SD_Error Status = SD_OK;
if ((TM_FATFS_SD_SDIO_Stat & STA_NOINIT)) {
return RES_NOTRDY;
}
if ((DWORD)buff & 3) {
DRESULT res = RES_OK;
DWORD scratch[BLOCK_SIZE / 4];
while (count--) {
res = TM_FATFS_SD_SDIO_disk_read((void *)scratch, sector++, 1);
if (res != RES_OK) {
break;
}
memcpy(buff, scratch, BLOCK_SIZE);
buff += BLOCK_SIZE;
}
return res;
}
Status = SD_ReadMultiBlocks(buff, sector << 9, BLOCK_SIZE, count);
if (Status == SD_OK) {
SDTransferState State;
Status = SD_WaitReadOperation();
while ((State = SD_GetStatus()) == SD_TRANSFER_BUSY);
if ((State == SD_TRANSFER_ERROR) || (Status != SD_OK)) {
return RES_ERROR;
} else {
return RES_OK;
}
} else {
return RES_ERROR;
}
}
DRESULT TM_FATFS_SD_SDIO_disk_write(const BYTE *buff, DWORD sector, UINT count) {
SD_Error Status = SD_OK;
if (!TM_FATFS_SDIO_WriteEnabled()) {
return RES_WRPRT;
}
if (SD_Detect() != SD_PRESENT) {
return RES_NOTRDY;
}
if ((DWORD)buff & 3) {
DRESULT res = RES_OK;
DWORD scratch[BLOCK_SIZE / 4];
while (count--) {
memcpy(scratch, buff, BLOCK_SIZE);
res = TM_FATFS_SD_SDIO_disk_write((void *)scratch, sector++, 1);
if (res != RES_OK) {
break;
}
buff += BLOCK_SIZE;
}
return(res);
}
Status = SD_WriteMultiBlocks((uint8_t *)buff, sector << 9, BLOCK_SIZE, count); // 4GB Compliant
if (Status == SD_OK) {
SDTransferState State;
Status = SD_WaitWriteOperation(); // Check if the Transfer is finished
while ((State = SD_GetStatus()) == SD_TRANSFER_BUSY); // BUSY, OK (DONE), ERROR (FAIL)
if ((State == SD_TRANSFER_ERROR) || (Status != SD_OK)) {
return RES_ERROR;
} else {
return RES_OK;
}
} else {
return RES_ERROR;
}
}
DRESULT TM_FATFS_SD_SDIO_disk_ioctl(BYTE cmd, void *buff) {
switch (cmd) {
case GET_SECTOR_SIZE : // Get R/W sector size (WORD)
*(WORD *) buff = 512;
break;
case GET_BLOCK_SIZE : // Get erase block size in unit of sector (DWORD)
*(DWORD *) buff = 32;
break;
case CTRL_SYNC :
case CTRL_ERASE_SECTOR :
break;
}
return RES_OK;
}
void SDIO_IRQHandler(void) {
SD_ProcessIRQSrc();
}
#ifdef SD_SDIO_DMA_STREAM3
void DMA2_Stream3_IRQHandler(void) {
SD_ProcessDMAIRQ();
}
#endif
#ifdef SD_SDIO_DMA_STREAM6
void DMA2_Stream6_IRQHandler(void) {
SD_ProcessDMAIRQ();
}
#endif
/**
* @}
*/
/** @defgroup STM324x9I_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) {
logf ("SD_PowerON failed\r\n");
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
logf ("SD_PowerON OK\r\n");
errorstatus = SD_InitializeCards ();
if (errorstatus != SD_OK) {
logf ("SD_InitializeCards failed\r\n");
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
logf ("SD_InitializeCards OK\r\n");
/*!< Configure the SDIO peripheral */
/*!< SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */
/*!< on STM32F4xx 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 --------------------------------*/
logf ("SD_GetCardInfo OK\r\n");
errorstatus = SD_SelectDeselect ((uint32_t) (SDCardInfo.RCA << 16));
}
else {
logf ("SD_SelectDeselect failed\r\n");
}
if (errorstatus == SD_OK) {
logf ("SD_SelectDeselect OK\r\n");
#if FATFS_SDIO_4BIT == 1
//4 bit mode
errorstatus = SD_EnableWideBusOperation (SDIO_BusWide_4b);
#else
//1 bit mode
errorstatus = SD_EnableWideBusOperation (SDIO_BusWide_1b);
#endif
}
else {
logf ("SD_EnableWideBusOperation failed\r\n");
}
if (errorstatus == SD_OK) {
logf ("SD_EnableWideBusOperation OK\r\n");
}
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);
}
}
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 status */
if (!TM_FATFS_CheckCardDetectPin()) {
status = SD_NOT_PRESENT;
}
/* Return status */
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 */
/*!< SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) */
/*!< on STM32F4xx 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);
}
return SD_OK;
}
/**
* @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 = ((uint64_t)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 */