Diff: targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_ll_sdmmc.c

Revision:

394:83f921546702

Parent:

354:e67efb2aab0e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_ll_sdmmc.c	Fri Nov 07 15:45:07 2014 +0000
@@ -0,0 +1,519 @@
+/**
+  ******************************************************************************
+  * @file    stm32l1xx_ll_sdmmc.c
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    5-September-2014
+  * @brief   SDMMC Low Layer HAL module driver.
+  *    
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the SDMMC peripheral:
+  *           + Initialization/de-initialization functions
+  *           + I/O operation functions
+  *           + Peripheral Control functions 
+  *           + Peripheral State functions
+  *         
+  @verbatim
+  ==============================================================================
+                       ##### SDMMC peripheral features #####
+  ==============================================================================        
+    [..] The SD/SDIO MMC card host interface (SDIO) provides an interface between the APB2
+         peripheral bus and MultiMedia cards (MMCs), SD memory cards, SDIO cards and CE-ATA
+         devices.
+
+    [..] The MultiMedia Card system specifications are available through the MultiMedia Card
+         Association website at www.mmca.org, published by the MMCA technical committee.
+         SD memory card and SD I/O card system specifications are available through the SD card
+         Association website at www.sdcard.org.
+         CE-ATA system specifications are available through the CE-ATA work group web site at
+         www.ce-ata.org.
+    
+    [..] The SDIO features include the following:
+         (+) Full compliance with MultiMedia Card System Specification Version 4.2. Card support
+             for three different databus modes: 1-bit (default), 4-bit and 8-bit
+         (+) Full compatibility with previous versions of MultiMedia Cards (forward compatibility)
+         (+) Full compliance with SD Memory Card Specifications Version 2.0
+         (+) Full compliance with SD I/O Card Specification Version 2.0: card support for two
+             different data bus modes: 1-bit (default) and 4-bit
+         (+) Full support of the CE-ATA features (full compliance with CE-ATA digital protocol
+             Rev1.1)
+         (+) Data transfer up to 48 MHz for the 8 bit mode
+         (+) Data and command output enable signals to control external bidirectional drivers.
+                 
+   
+                           ##### How to use this driver #####
+  ==============================================================================
+    [..]
+      This driver is a considered as a driver of service for external devices drivers 
+      that interfaces with the SDIO peripheral.
+      According to the device used (SD card/ MMC card / SDIO card ...), a set of APIs 
+      is used in the device's driver to perform SDIO operations and functionalities.
+   
+      This driver is almost transparent for the final user, it is only used to implement other
+      functionalities of the external device.
+   
+    [..]
+      (+) The SDIO clock (SDIOCLK = 48 MHz) is coming from the PLL. Before start working with SDIO peripheral make sure that the
+          PLL is well configured.
+          The SDIO peripheral uses two clock signals:
+          (++) SDIO adapter clock (SDIOCLK = 48 MHz)
+          (++) APB2 bus clock (PCLK2)
+       
+          -@@- PCLK2 and SDIO_CK clock frequencies must respect the following condition:
+               Frequency(PCLK2) >= (3 / 8 x Frequency(SDIO_CK))
+  
+      (+) Enable/Disable peripheral clock using RCC peripheral macros related to SDIO
+          peripheral.
+
+      (+) Enable the Power ON State using the SDIO_PowerState_ON(hsdio) 
+          function and disable it using the function SDIO_PowerState_OFF(hsdio).
+                
+      (+) Enable/Disable the clock using the __SDIO_ENABLE()/__SDIO_DISABLE() macros.
+  
+      (+) Enable/Disable the peripheral interrupts using the macros __SDIO_ENABLE_IT(hsdio, IT) 
+          and __SDIO_DISABLE_IT(hsdio, IT) if you need to use interrupt mode. 
+  
+      (+) When using the DMA mode 
+          (++) Configure the DMA in the MSP layer of the external device
+          (++) Active the needed channel Request 
+          (++) Enable the DMA using __SDIO_DMA_ENABLE() macro or Disable it using the macro
+               __SDIO_DMA_DISABLE().
+  
+      (+) To control the CPSM (Command Path State Machine) and send 
+          commands to the card use the SDIO_SendCommand(), 
+          SDIO_GetCommandResponse() and SDIO_GetResponse() functions. First, user has
+          to fill the command structure (pointer to SDIO_CmdInitTypeDef) according 
+          to the selected command to be sent.
+          The parameters that should be filled are:
+           (++) Command Argument
+           (++) Command Index
+           (++) Command Response type
+           (++) Command Wait
+           (++) CPSM Status (Enable or Disable).
+  
+          -@@- To check if the command is well received, read the SDIO_CMDRESP
+              register using the SDIO_GetCommandResponse().
+              The SDIO responses registers (SDIO_RESP1 to SDIO_RESP2), use the
+              SDIO_GetResponse() function.
+  
+      (+) To control the DPSM (Data Path State Machine) and send/receive 
+           data to/from the card use the SDIO_DataConfig(), SDIO_GetDataCounter(), 
+          SDIO_ReadFIFO(), SDIO_WriteFIFO() and SDIO_GetFIFOCount() functions.
+  
+    *** Read Operations ***
+    =======================
+    [..]
+      (#) First, user has to fill the data structure (pointer to
+          SDIO_DataInitTypeDef) according to the selected data type to be received.
+          The parameters that should be filled are:
+           (++) Data TimeOut
+           (++) Data Length
+           (++) Data Block size
+           (++) Data Transfer direction: should be from card (To SDIO)
+           (++) Data Transfer mode
+           (++) DPSM Status (Enable or Disable)
+                                     
+      (#) Configure the SDIO resources to receive the data from the card
+          according to selected transfer mode.
+  
+      (#) Send the selected Read command.
+                    
+      (#) Use the SDIO flags/interrupts to check the transfer status.
+  
+    *** Write Operations ***
+    ========================
+    [..]
+     (#) First, user has to fill the data structure (pointer to
+         SDIO_DataInitTypeDef) according to the selected data type to be received.
+         The parameters that should be filled are:
+          (++) Data TimeOut
+          (++) Data Length
+          (++) Data Block size
+          (++) Data Transfer direction:  should be to card (To CARD)
+          (++) Data Transfer mode
+          (++) DPSM Status (Enable or Disable)
+  
+     (#) Configure the SDIO resources to send the data to the card according to 
+         selected transfer mode.
+                     
+     (#) Send the selected Write command.
+                    
+     (#) Use the SDIO flags/interrupts to check the transfer status.
+  
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l1xx_hal.h"
+
+/** @addtogroup STM32L1xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup SDMMC_LL SDMMC_LL
+  * @brief Low layer module for SD and MMC driver
+  * @{
+  */
+
+#if defined (HAL_SD_MODULE_ENABLED) || defined(HAL_MMC_MODULE_ENABLED)
+
+#if defined(STM32L151xD) || defined(STM32L152xD) || defined(STM32L162xD)
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup SDMMC_LL_Exported_Functions SDMMC_LL Exported Functions
+  * @{
+  */
+
+/** @defgroup HAL_SDMMC_LL_Group1 Initialization/de-initialization functions 
+ *  @brief    Initialization and Configuration functions 
+ *
+@verbatim    
+ ===============================================================================
+              ##### Initialization/de-initialization functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+ 
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the SDIO according to the specified
+  *         parameters in the SDIO_InitTypeDef and create the associated handle.
+  * @param  SDIOx: Pointer to SDIO register base
+  * @param  Init: SDIO initialization structure   
+  * @retval HAL status
+  */
+HAL_StatusTypeDef SDIO_Init(SDIO_TypeDef *SDIOx, SDIO_InitTypeDef Init)
+{
+  uint32_t tmpreg = 0; 
+
+  /* Check the parameters */
+  assert_param(IS_SDIO_ALL_INSTANCE(SDIOx));
+  assert_param(IS_SDIO_CLOCK_EDGE(Init.ClockEdge)); 
+  assert_param(IS_SDIO_CLOCK_BYPASS(Init.ClockBypass));
+  assert_param(IS_SDIO_CLOCK_POWER_SAVE(Init.ClockPowerSave));
+  assert_param(IS_SDIO_BUS_WIDE(Init.BusWide));
+  assert_param(IS_SDIO_HARDWARE_FLOW_CONTROL(Init.HardwareFlowControl));
+  assert_param(IS_SDIO_CLKDIV(Init.ClockDiv));
+  
+  /* Set SDIO configuration parameters */
+  tmpreg |= (Init.ClockEdge           |\
+             Init.ClockBypass         |\
+             Init.ClockPowerSave      |\
+             Init.BusWide             |\
+             Init.HardwareFlowControl |\
+             Init.ClockDiv
+             ); 
+  
+  /* Write to SDIO CLKCR */
+  MODIFY_REG(SDIOx->CLKCR, CLKCR_CLEAR_MASK, tmpreg);  
+
+  return HAL_OK;
+}
+
+
+
+/**
+  * @}
+  */
+
+/** @defgroup HAL_SDMMC_LL_Group2 I/O operation functions 
+ *  @brief   Data transfers functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### I/O operation functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to manage the SDIO data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Read data (word) from Rx FIFO in blocking mode (polling) 
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval HAL status
+  */
+uint32_t SDIO_ReadFIFO(SDIO_TypeDef *SDIOx)
+{
+  /* Read data from Rx FIFO */ 
+  return (SDIOx->FIFO);
+}
+
+/**
+  * @brief  Write data (word) to Tx FIFO in blocking mode (polling) 
+  * @param  SDIOx: Pointer to SDIO register base
+  * @param  pWriteData: pointer to data to write
+  * @retval HAL status
+  */
+HAL_StatusTypeDef SDIO_WriteFIFO(SDIO_TypeDef *SDIOx, uint32_t *pWriteData)
+{ 
+  /* Write data to FIFO */ 
+  SDIOx->FIFO = *pWriteData;
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup HAL_SDMMC_LL_Group3 Peripheral Control functions 
+ *  @brief   management functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### Peripheral Control functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to control the SDIO data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Set SDIO Power state to ON. 
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval HAL status
+  */
+HAL_StatusTypeDef SDIO_PowerState_ON(SDIO_TypeDef *SDIOx)
+{  
+  /* Set power state to ON */ 
+  SDIOx->POWER = SDIO_POWER_PWRCTRL;
+  
+  return HAL_OK; 
+}
+
+/**
+  * @brief  Set SDIO Power state to OFF. 
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval HAL status
+  */
+HAL_StatusTypeDef SDIO_PowerState_OFF(SDIO_TypeDef *SDIOx)
+{
+  /* Set power state to OFF */
+  SDIOx->POWER = (uint32_t)0x00000000;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Get SDIO Power state. 
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval Power status of the controller. The returned value can be one of the 
+  *         following values:
+  *            - 0x00: Power OFF
+  *            - 0x02: Power UP
+  *            - 0x03: Power ON 
+  */
+uint32_t SDIO_GetPowerState(SDIO_TypeDef *SDIOx)  
+{
+  return (SDIOx->POWER & SDIO_POWER_PWRCTRL);
+}
+
+/**
+  * @brief  Configure the SDIO command path according to the specified parameters in
+  *         SDIO_CmdInitTypeDef structure and send the command 
+  * @param  SDIOx: Pointer to SDIO register base
+  * @param  SDIO_CmdInitStruct: pointer to a SDIO_CmdInitTypeDef structure that contains 
+  *         the configuration information for the SDIO command
+  * @retval HAL status
+  */
+HAL_StatusTypeDef SDIO_SendCommand(SDIO_TypeDef *SDIOx, SDIO_CmdInitTypeDef *SDIO_CmdInitStruct)
+{
+  uint32_t tmpreg = 0;
+  
+  /* Check the parameters */
+  assert_param(IS_SDIO_CMD_INDEX(SDIO_CmdInitStruct->CmdIndex));
+  assert_param(IS_SDIO_RESPONSE(SDIO_CmdInitStruct->Response));
+  assert_param(IS_SDIO_WAIT(SDIO_CmdInitStruct->WaitForInterrupt));
+  assert_param(IS_SDIO_CPSM(SDIO_CmdInitStruct->CPSM));
+
+  /* Set the SDIO Argument value */
+  SDIOx->ARG = SDIO_CmdInitStruct->Argument;
+
+  /* Set SDIO command parameters */
+  tmpreg |= (uint32_t)(SDIO_CmdInitStruct->CmdIndex         |\
+                       SDIO_CmdInitStruct->Response         |\
+                       SDIO_CmdInitStruct->WaitForInterrupt |\
+                       SDIO_CmdInitStruct->CPSM);
+  
+  /* Write to SDIO CMD register */
+  MODIFY_REG(SDIOx->CMD, CMD_CLEAR_MASK, tmpreg); 
+  
+  return HAL_OK;  
+}
+
+/**
+  * @brief  Return the command index of last command for which response received
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval Command index of the last command response received
+  */
+uint8_t SDIO_GetCommandResponse(SDIO_TypeDef *SDIOx)
+{
+  return (uint8_t)(SDIOx->RESPCMD);
+}
+
+
+/**
+  * @brief  Return the response received from the card for the last command
+  * @param  SDIO_RESP: Specifies the SDIO response register. 
+  *          This parameter can be one of the following values:
+  *            @arg SDIO_RESP1: Response Register 1
+  *            @arg SDIO_RESP2: Response Register 2
+  *            @arg SDIO_RESP3: Response Register 3
+  *            @arg SDIO_RESP4: Response Register 4  
+  * @retval The Corresponding response register value
+  */
+uint32_t SDIO_GetResponse(uint32_t SDIO_RESP)
+{
+  __IO uint32_t tmp = 0;
+
+  /* Check the parameters */
+  assert_param(IS_SDIO_RESP(SDIO_RESP));
+
+  /* Get the response */
+  tmp = SDIO_RESP_ADDR + SDIO_RESP;
+  
+  return (*(__IO uint32_t *) tmp);
+}  
+
+/**
+  * @brief  Configure the SDIO data path according to the specified 
+  *         parameters in the SDIO_DataInitTypeDef.
+  * @param  SDIOx: Pointer to SDIO register base  
+  * @param  SDIO_DataInitStruct : pointer to a SDIO_DataInitTypeDef structure 
+  *         that contains the configuration information for the SDIO command.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef SDIO_DataConfig(SDIO_TypeDef *SDIOx, SDIO_DataInitTypeDef* SDIO_DataInitStruct)
+{
+  uint32_t tmpreg = 0;
+  
+  /* Check the parameters */
+  assert_param(IS_SDIO_DATA_LENGTH(SDIO_DataInitStruct->DataLength));
+  assert_param(IS_SDIO_BLOCK_SIZE(SDIO_DataInitStruct->DataBlockSize));
+  assert_param(IS_SDIO_TRANSFER_DIR(SDIO_DataInitStruct->TransferDir));
+  assert_param(IS_SDIO_TRANSFER_MODE(SDIO_DataInitStruct->TransferMode));
+  assert_param(IS_SDIO_DPSM(SDIO_DataInitStruct->DPSM));
+
+  /* Set the SDIO Data TimeOut value */
+  SDIOx->DTIMER = SDIO_DataInitStruct->DataTimeOut;
+
+  /* Set the SDIO DataLength value */
+  SDIOx->DLEN = SDIO_DataInitStruct->DataLength;
+
+  /* Set the SDIO data configuration parameters */
+  tmpreg |= (uint32_t)(SDIO_DataInitStruct->DataBlockSize |\
+                       SDIO_DataInitStruct->TransferDir   |\
+                       SDIO_DataInitStruct->TransferMode  |\
+                       SDIO_DataInitStruct->DPSM);
+  
+  /* Write to SDIO DCTRL */
+  MODIFY_REG(SDIOx->DCTRL, DCTRL_CLEAR_MASK, tmpreg);
+
+  return HAL_OK;
+
+}
+
+/**
+  * @brief  Returns number of remaining data bytes to be transferred.
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval Number of remaining data bytes to be transferred
+  */
+uint32_t SDIO_GetDataCounter(SDIO_TypeDef *SDIOx)
+{
+  return (SDIOx->DCOUNT);
+}
+
+/**
+  * @brief  Get the FIFO data
+  * @param  SDIOx: Pointer to SDIO register base
+  * @retval Data received
+  */
+uint32_t SDIO_GetFIFOCount(SDIO_TypeDef *SDIOx)
+{
+  return (SDIOx->FIFO);
+}
+
+
+/**
+  * @brief  Sets one of the two options of inserting read wait interval.
+  * @param  SDIO_ReadWaitMode: SD I/O Read Wait operation mode.
+  *          This parameter can be:
+  *            @arg SDIO_READ_WAIT_MODE_CLK: Read Wait control by stopping SDIOCLK
+  *            @arg SDIO_READ_WAIT_MODE_DATA2: Read Wait control using SDIO_DATA2
+  * @retval None
+  */
+HAL_StatusTypeDef SDIO_SetSDIOReadWaitMode(uint32_t SDIO_ReadWaitMode)
+{
+  /* Check the parameters */
+  assert_param(IS_SDIO_READWAIT_MODE(SDIO_ReadWaitMode));
+  
+  *(__IO uint32_t *)DCTRL_RWMOD_BB = SDIO_ReadWaitMode;
+  
+  return HAL_OK;  
+}
+
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* STM32L151xD || STM32L152xD || STM32L162xD */
+
+#endif /* (HAL_SD_MODULE_ENABLED) || (HAL_MMC_MODULE_ENABLED) */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/