基于STM32的RT－thread系统的文件系统与RTgui实例

/** ****************************************************************************** * @file SDIO/sdcard.c * @author MCD Application Team * @version V3.1.2 * @date 09/28/2009 * @brief This file provides all the SD Card driver firmware functions. ****************************************************************************** * @copy * * 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 2009 STMicroelectronics</center></h2> */ /* Includes ------------------------------------------------------------------*/ #include "sdcard.h" #include "stm32f10x_dma.h" #include "stm32f10x_sdio.h" #include <rtthread.h> /** @addtogroup STM32F10x_StdPeriph_Examples * @{ */ /** @addtogroup SDIO_Example * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ #define NULL 0 #define SDIO_STATIC_FLAGS ((uint32_t)0x000005FF) #define SDIO_CMD0TIMEOUT ((uint32_t)0x00002710) #define SDIO_FIFO_Address ((uint32_t)0x40018080) /* 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) /* 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_VOLTAGE_WINDOW_MMC ((uint32_t)0x80FF8000) #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_CARD_PROGRAMMING ((uint32_t)0x00000007) #define SD_CARD_RECEIVING ((uint32_t)0x00000006) #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) /* 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) /* 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) #define SDIO_INIT_CLK_DIV ((uint8_t)0xB2) #define SDIO_TRANSFER_CLK_DIV ((uint8_t)0x1) /* Private macro -------------------------------------------------------------*/ /* 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 uint32_t DeviceMode = SD_POLLING_MODE; static uint32_t TotalNumberOfBytes = 0, StopCondition = 0; uint32_t *SrcBuffer, *DestBuffer; volatile SD_Error TransferError = SD_OK; __IO uint32_t TransferEnd = 0; __IO uint32_t NumberOfBytes = 0; SDIO_InitTypeDef SDIO_InitStructure; SDIO_CmdInitTypeDef SDIO_CmdInitStructure; SDIO_DataInitTypeDef SDIO_DataInitStructure; /* 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); static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes); static void GPIO_Configuration(void); static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize); static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize); /* Private functions ---------------------------------------------------------*/ /** * @brief Initializes the SD Card and put it into StandBy State (Ready * for data transfer). * @param None * @retval SD_Error: SD Card Error code. */ SD_Error SD_Init(void) { SD_Error errorstatus = SD_OK; /* Configure SDIO interface GPIO */ GPIO_Configuration(); /* Enable the SDIO AHB Clock */ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE); /* Enable the DMA2 Clock */ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE); 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 */ /* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */ 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_Enable; SDIO_Init(&SDIO_InitStructure); return(errorstatus); } /** * @brief Enquires cards about their operating voltage and configures * clock controls. * @param None