/** ****************************************************************************** * @file stm32h7xx_hal_mmc_ex.c * @author MCD Application Team * @brief MMC card Extended HAL module driver. * This file provides firmware functions to manage the following * functionalities of the Secure Digital (MMC) peripheral: * + Extended features functions * @verbatim ============================================================================== ##### How to use this driver ##### ============================================================================== [..] The MMC Extension HAL driver can be used as follows: (+) Configure Buffer0 and Buffer1 start address and Buffer size using HAL_MMCEx_ConfigDMAMultiBuffer() function. (+) Start Read and Write for multibuffer mode using HAL_MMCEx_ReadBlocksDMAMultiBuffer() and HAL_MMCEx_WriteBlocksDMAMultiBuffer() functions. @endverbatim ****************************************************************************** * @attention * *

© Copyright (c) 2017 STMicroelectronics. * All rights reserved.

* * This software component is licensed by ST under BSD 3-Clause license, * the "License"; You may not use this file except in compliance with the * License. You may obtain a copy of the License at: * opensource.org/licenses/BSD-3-Clause * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32h7xx_hal.h" /** @addtogroup STM32H7xx_HAL_Driver * @{ */ /** @defgroup MMCEx MMCEx * @brief MMC Extended HAL module driver * @{ */ #ifdef HAL_MMC_MODULE_ENABLED /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /** @addtogroup MMCEx_Exported_Functions * @{ */ /** @addtogroup MMCEx_Exported_Functions_Group1 * @brief Multibuffer functions * @verbatim ============================================================================== ##### Multibuffer functions ##### ============================================================================== [..] This section provides functions allowing to configure the multibuffer mode and start read and write multibuffer mode for MMC HAL driver. @endverbatim * @{ */ /** * @brief Configure DMA Dual Buffer mode. The Data transfer is managed by an Internal DMA. * @param hmmc: MMC handle * @param pDataBuffer0: Pointer to the buffer0 that will contain/receive the transferred data * @param pDataBuffer1: Pointer to the buffer1 that will contain/receive the transferred data * @param BufferSize: Size of Buffer0 in Blocks. Buffer0 and Buffer1 must have the same size. * @retval HAL status */ HAL_StatusTypeDef HAL_MMCEx_ConfigDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t *pDataBuffer0, uint32_t *pDataBuffer1, uint32_t BufferSize) { if (hmmc->State == HAL_MMC_STATE_READY) { hmmc->Instance->IDMABASE0 = (uint32_t) pDataBuffer0 ; hmmc->Instance->IDMABASE1 = (uint32_t) pDataBuffer1 ; hmmc->Instance->IDMABSIZE = (uint32_t)(MMC_BLOCKSIZE * BufferSize); return HAL_OK; } else { return HAL_BUSY; } } /** * @brief Reads block(s) from a specified address in a card. The received Data will be stored in Buffer0 and Buffer1. * Buffer0, Buffer1 and BufferSize need to be configured by function HAL_MMCEx_ConfigDMAMultiBuffer before * call this function. * @param hmmc: MMC handle * @param BlockAdd: Block Address from where data is to be read * @param NumberOfBlocks: Total number of blocks to read * @retval HAL status */ HAL_StatusTypeDef HAL_MMCEx_ReadBlocksDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t BlockAdd, uint32_t NumberOfBlocks) { SDMMC_DataInitTypeDef config; uint32_t DmaBase0_reg; uint32_t DmaBase1_reg; uint32_t errorstate; uint32_t add = BlockAdd; if (hmmc->State == HAL_MMC_STATE_READY) { if ((BlockAdd + NumberOfBlocks) > (hmmc->MmcCard.LogBlockNbr)) { hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_OUT_OF_RANGE; return HAL_ERROR; } /* Check the case of 4kB blocks (field DATA SECTOR SIZE of extended CSD register) */ if (((hmmc->Ext_CSD[(MMC_EXT_CSD_DATA_SEC_SIZE_INDEX / 4)] >> MMC_EXT_CSD_DATA_SEC_SIZE_POS) & 0x000000FFU) != 0x0U) { if ((NumberOfBlocks % 8U) != 0U) { /* The number of blocks should be a multiple of 8 sectors of 512 bytes = 4 KBytes */ hmmc->ErrorCode |= HAL_MMC_ERROR_BLOCK_LEN_ERR; return HAL_ERROR; } if ((BlockAdd % 8U) != 0U) { /* The address should be aligned to 8 (corresponding to 4 KBytes blocks) */ hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_MISALIGNED; return HAL_ERROR; } } DmaBase0_reg = hmmc->Instance->IDMABASE0; DmaBase1_reg = hmmc->Instance->IDMABASE1; if ((hmmc->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U)) { hmmc->ErrorCode = HAL_MMC_ERROR_ADDR_OUT_OF_RANGE; return HAL_ERROR; } /* Initialize data control register */ hmmc->Instance->DCTRL = 0; hmmc->ErrorCode = HAL_MMC_ERROR_NONE; hmmc->State = HAL_MMC_STATE_BUSY; if ((hmmc->MmcCard.CardType) != MMC_HIGH_CAPACITY_CARD) { add *= 512U; } /* Configure the MMC DPSM (Data Path State Machine) */ config.DataTimeOut = SDMMC_DATATIMEOUT; config.DataLength = MMC_BLOCKSIZE * NumberOfBlocks; config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B; config.TransferDir = SDMMC_TRANSFER_DIR_TO_SDMMC; config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK; config.DPSM = SDMMC_DPSM_DISABLE; (void)SDMMC_ConfigData(hmmc->Instance, &config); hmmc->Instance->DCTRL |= SDMMC_DCTRL_FIFORST; __SDMMC_CMDTRANS_ENABLE(hmmc->Instance); hmmc->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0; /* Read Blocks in DMA mode */ hmmc->Context = (MMC_CONTEXT_READ_MULTIPLE_BLOCK | MMC_CONTEXT_DMA); /* Read Multi Block command */ errorstate = SDMMC_CmdReadMultiBlock(hmmc->Instance, add); if (errorstate != HAL_MMC_ERROR_NONE) { hmmc->State = HAL_MMC_STATE_READY; hmmc->ErrorCode |= errorstate; return HAL_ERROR; } __HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_RXOVERR | SDMMC_IT_DATAEND | SDMMC_FLAG_IDMATE | SDMMC_FLAG_IDMABTC)); return HAL_OK; } else { return HAL_BUSY; } } /** * @brief Write block(s) to a specified address in a card. The transferred Data are stored in Buffer0 and Buffer1. * Buffer0, Buffer1 and BufferSize need to be configured by function HAL_MMCEx_ConfigDMAMultiBuffer before * call this function. * @param hmmc: MMC handle * @param BlockAdd: Block Address from where data is to be read * @param NumberOfBlocks: Total number of blocks to read * @retval HAL status */ HAL_StatusTypeDef HAL_MMCEx_WriteBlocksDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t BlockAdd, uint32_t NumberOfBlocks) { SDMMC_DataInitTypeDef config; uint32_t errorstate; uint32_t DmaBase0_reg; uint32_t DmaBase1_reg; uint32_t add = BlockAdd; if (hmmc->State == HAL_MMC_STATE_READY) { if ((BlockAdd + NumberOfBlocks) > (hmmc->MmcCard.LogBlockNbr)) { hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_OUT_OF_RANGE; return HAL_ERROR; } /* Check the case of 4kB blocks (field DATA SECTOR SIZE of extended CSD register) */ if (((hmmc->Ext_CSD[(MMC_EXT_CSD_DATA_SEC_SIZE_INDEX / 4)] >> MMC_EXT_CSD_DATA_SEC_SIZE_POS) & 0x000000FFU) != 0x0U) { if ((NumberOfBlocks % 8U) != 0U) { /* The number of blocks should be a multiple of 8 sectors of 512 bytes = 4 KBytes */ hmmc->ErrorCode |= HAL_MMC_ERROR_BLOCK_LEN_ERR; return HAL_ERROR; } if ((BlockAdd % 8U) != 0U) { /* The address should be aligned to 8 (corresponding to 4 KBytes blocks) */ hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_MISALIGNED; return HAL_ERROR; } } DmaBase0_reg = hmmc->Instance->IDMABASE0; DmaBase1_reg = hmmc->Instance->IDMABASE1; if ((hmmc->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U)) { hmmc->ErrorCode = HAL_MMC_ERROR_ADDR_OUT_OF_RANGE; return HAL_ERROR; } /* Initialize data control register */ hmmc->Instance->DCTRL = 0; hmmc->ErrorCode = HAL_MMC_ERROR_NONE; hmmc->State = HAL_MMC_STATE_BUSY; if ((hmmc->MmcCard.CardType) != MMC_HIGH_CAPACITY_CARD) { add *= 512U; } /* Configure the MMC DPSM (Data Path State Machine) */ config.DataTimeOut = SDMMC_DATATIMEOUT; config.DataLength = MMC_BLOCKSIZE * NumberOfBlocks; config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B; config.TransferDir = SDMMC_TRANSFER_DIR_TO_CARD; config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK; config.DPSM = SDMMC_DPSM_DISABLE; (void)SDMMC_ConfigData(hmmc->Instance, &config); __SDMMC_CMDTRANS_ENABLE(hmmc->Instance); hmmc->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0; /* Write Blocks in DMA mode */ hmmc->Context = (MMC_CONTEXT_WRITE_MULTIPLE_BLOCK | MMC_CONTEXT_DMA); /* Write Multi Block command */ errorstate = SDMMC_CmdWriteMultiBlock(hmmc->Instance, add); if (errorstate != HAL_MMC_ERROR_NONE) { hmmc->State = HAL_MMC_STATE_READY; hmmc->ErrorCode |= errorstate; return HAL_ERROR; } __HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_TXUNDERR | SDMMC_IT_DATAEND | SDMMC_FLAG_IDMATE | SDMMC_FLAG_IDMABTC)); return HAL_OK; } else { return HAL_BUSY; } } /** * @brief Change the DMA Buffer0 or Buffer1 address on the fly. * @param hmmc: pointer to a MMC_HandleTypeDef structure. * @param Buffer: the buffer to be changed, This parameter can be one of * the following values: MMC_DMA_BUFFER0 or MMC_DMA_BUFFER1 * @param pDataBuffer: The new address * @note The BUFFER0 address can be changed only when the current transfer use * BUFFER1 and the BUFFER1 address can be changed only when the current * transfer use BUFFER0. * @retval HAL status */ HAL_StatusTypeDef HAL_MMCEx_ChangeDMABuffer(MMC_HandleTypeDef *hmmc, HAL_MMCEx_DMABuffer_MemoryTypeDef Buffer, uint32_t *pDataBuffer) { if (Buffer == MMC_DMA_BUFFER0) { /* change the buffer0 address */ hmmc->Instance->IDMABASE0 = (uint32_t)pDataBuffer; } else { /* change the memory1 address */ hmmc->Instance->IDMABASE1 = (uint32_t)pDataBuffer; } return HAL_OK; } /** * @} */ /** * @} */ #endif /* HAL_MMC_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/