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ugfx/boards/base/STM32F746-Discovery/stm32f746g_discovery_sdram.c

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/**
******************************************************************************
* @file stm32746g_discovery_sdram.c
* @author MCD Application Team
* @version V1.0.0
* @date 25-June-2015
* @brief This file includes the SDRAM driver for the MT48LC4M32B2B5-7 memory
* device mounted on STM32746G-Discovery board.
@verbatim
1. How To use this driver:
--------------------------
- This driver is used to drive the MT48LC4M32B2B5-7 SDRAM external memory mounted
on STM32746G-Discovery board.
- This driver does not need a specific component driver for the SDRAM device
to be included with.
2. Driver description:
---------------------
+ Initialization steps:
o Initialize the SDRAM external memory using the BSP_SDRAM_Init() function. This
function includes the MSP layer hardware resources initialization and the
FMC controller configuration to interface with the external SDRAM memory.
o It contains the SDRAM initialization sequence to program the SDRAM external
device using the function BSP_SDRAM_Initialization_sequence(). Note that this
sequence is standard for all SDRAM devices, but can include some differences
from a device to another. If it is the case, the right sequence should be
implemented separately.
+ SDRAM read/write operations
o SDRAM external memory can be accessed with read/write operations once it is
initialized.
Read/write operation can be performed with AHB access using the functions
BSP_SDRAM_ReadData()/BSP_SDRAM_WriteData(), or by DMA transfer using the functions
BSP_SDRAM_ReadData_DMA()/BSP_SDRAM_WriteData_DMA().
o The AHB access is performed with 32-bit width transaction, the DMA transfer
configuration is fixed at single (no burst) word transfer (see the
SDRAM_MspInit() static function).
o User can implement his own functions for read/write access with his desired
configurations.
o If interrupt mode is used for DMA transfer, the function BSP_SDRAM_DMA_IRQHandler()
is called in IRQ handler file, to serve the generated interrupt once the DMA
transfer is complete.
o You can send a command to the SDRAM device in runtime using the function
BSP_SDRAM_Sendcmd(), and giving the desired command as parameter chosen between
the predefined commands of the "FMC_SDRAM_CommandTypeDef" structure.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2015 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 "gfx.h"
#include "stm32f746g_discovery_sdram.h"
#include "stm32f7xx_hal_rcc.h"
#include "stm32f7xx_hal_rcc_ex.h"
#include "stm32f7xx_hal_cortex.h"
#if GFX_USE_OS_CHIBIOS
#define HAL_GPIO_Init(port, ptr) palSetGroupMode(port, (ptr)->Pin, 0, (ptr)->Mode|((ptr)->Speed<<3)|((ptr)->Pull<<5)|((ptr)->Alternate<<7))
#endif
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM32746G_DISCOVERY
* @{
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM STM32746G_DISCOVERY_SDRAM
* @{
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Types_Definitions STM32746G_DISCOVERY_SDRAM Private Types Definitions
* @{
*/
/**
* @}
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Defines STM32746G_DISCOVERY_SDRAM Private Defines
* @{
*/
/**
* @}
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Macros STM32746G_DISCOVERY_SDRAM Private Macros
* @{
*/
/**
* @}
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Variables STM32746G_DISCOVERY_SDRAM Private Variables
* @{
*/
static SDRAM_HandleTypeDef sdramHandle;
static FMC_SDRAM_TimingTypeDef Timing;
static FMC_SDRAM_CommandTypeDef Command;
/**
* @}
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Function_Prototypes STM32746G_DISCOVERY_SDRAM Private Function Prototypes
* @{
*/
/**
* @}
*/
/** @defgroup STM32746G_DISCOVERY_SDRAM_Exported_Functions STM32746G_DISCOVERY_SDRAM Exported Functions
* @{
*/
static HAL_StatusTypeDef _HAL_SDRAM_Init(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM_TimingTypeDef *Timing)
{
/* Check the SDRAM handle parameter */
if(hsdram == NULL)
{
return HAL_ERROR;
}
if(hsdram->State == HAL_SDRAM_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hsdram->Lock = HAL_UNLOCKED;
}
/* Initialize the SDRAM controller state */
hsdram->State = HAL_SDRAM_STATE_BUSY;
/* Initialize SDRAM control Interface */
FMC_SDRAM_Init(hsdram->Instance, &(hsdram->Init));
/* Initialize SDRAM timing Interface */
FMC_SDRAM_Timing_Init(hsdram->Instance, Timing, hsdram->Init.SDBank);
/* Update the SDRAM controller state */
hsdram->State = HAL_SDRAM_STATE_READY;
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_SDRAM_DeInit(SDRAM_HandleTypeDef *hsdram)
{
/* Configure the SDRAM registers with their reset values */
FMC_SDRAM_DeInit(hsdram->Instance, hsdram->Init.SDBank);
/* Reset the SDRAM controller state */
hsdram->State = HAL_SDRAM_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hsdram);
return HAL_OK;
}
/**
* @brief Initializes the SDRAM device.
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_Init(void)
{
static uint8_t sdramstatus = SDRAM_ERROR;
/* SDRAM device configuration */
sdramHandle.Instance = FMC_SDRAM_DEVICE;
/* Timing configuration for 100Mhz as SD clock frequency (System clock is up to 200Mhz) */
Timing.LoadToActiveDelay = 2;
Timing.ExitSelfRefreshDelay = 7;
Timing.SelfRefreshTime = 4;
Timing.RowCycleDelay = 7;
Timing.WriteRecoveryTime = 2;
Timing.RPDelay = 2;
Timing.RCDDelay = 2;
sdramHandle.Init.SDBank = FMC_SDRAM_BANK1;
sdramHandle.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_8;
sdramHandle.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_12;
sdramHandle.Init.MemoryDataWidth = SDRAM_MEMORY_WIDTH;
sdramHandle.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
sdramHandle.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_2;
sdramHandle.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
sdramHandle.Init.SDClockPeriod = SDCLOCK_PERIOD;
sdramHandle.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE;
sdramHandle.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0;
/* SDRAM controller initialization */
BSP_SDRAM_MspInit(&sdramHandle, NULL); /* __weak function can be rewritten by the application */
if(_HAL_SDRAM_Init(&sdramHandle, &Timing) != HAL_OK)
{
sdramstatus = SDRAM_ERROR;
}
else
{
sdramstatus = SDRAM_OK;
}
/* SDRAM initialization sequence */
BSP_SDRAM_Initialization_sequence(REFRESH_COUNT);
return sdramstatus;
}
/**
* @brief DeInitializes the SDRAM device.
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_DeInit(void)
{
static uint8_t sdramstatus = SDRAM_ERROR;
/* SDRAM device de-initialization */
sdramHandle.Instance = FMC_SDRAM_DEVICE;
if(_HAL_SDRAM_DeInit(&sdramHandle) != HAL_OK)
{
sdramstatus = SDRAM_ERROR;
}
else
{
sdramstatus = SDRAM_OK;
}
/* SDRAM controller de-initialization */
BSP_SDRAM_MspDeInit(&sdramHandle, NULL);
return sdramstatus;
}
static HAL_StatusTypeDef _HAL_SDRAM_SendCommand(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM_CommandTypeDef *Command, uint32_t Timeout)
{
/* Check the SDRAM controller state */
if(hsdram->State == HAL_SDRAM_STATE_BUSY)
{
return HAL_BUSY;
}
/* Update the SDRAM state */
hsdram->State = HAL_SDRAM_STATE_BUSY;
/* Send SDRAM command */
FMC_SDRAM_SendCommand(hsdram->Instance, Command, Timeout);
/* Update the SDRAM controller state state */
if(Command->CommandMode == FMC_SDRAM_CMD_PALL)
{
hsdram->State = HAL_SDRAM_STATE_PRECHARGED;
}
else
{
hsdram->State = HAL_SDRAM_STATE_READY;
}
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_SDRAM_ProgramRefreshRate(SDRAM_HandleTypeDef *hsdram, uint32_t RefreshRate)
{
/* Check the SDRAM controller state */
if(hsdram->State == HAL_SDRAM_STATE_BUSY)
{
return HAL_BUSY;
}
/* Update the SDRAM state */
hsdram->State = HAL_SDRAM_STATE_BUSY;
/* Program the refresh rate */
FMC_SDRAM_ProgramRefreshRate(hsdram->Instance ,RefreshRate);
/* Update the SDRAM state */
hsdram->State = HAL_SDRAM_STATE_READY;
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_SDRAM_Read_32b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize)
{
__IO uint32_t *pSdramAddress = (uint32_t *)pAddress;
/* Process Locked */
__HAL_LOCK(hsdram);
/* Check the SDRAM controller state */
if(hsdram->State == HAL_SDRAM_STATE_BUSY)
{
return HAL_BUSY;
}
else if(hsdram->State == HAL_SDRAM_STATE_PRECHARGED)
{
return HAL_ERROR;
}
/* Read data from source */
for(; BufferSize != 0; BufferSize--)
{
*pDstBuffer = *(__IO uint32_t *)pSdramAddress;
pDstBuffer++;
pSdramAddress++;
}
/* Process Unlocked */
__HAL_UNLOCK(hsdram);
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_DMA_Init(DMA_HandleTypeDef *hdma)
{
uint32_t tmp = 0;
/* Check the DMA peripheral state */
if(hdma == NULL)
{
return HAL_ERROR;
}
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_BUSY;
/* Get the CR register value */
tmp = hdma->Instance->CR;
/* Clear CHSEL, MBURST, PBURST, PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR, CT and DBM bits */
tmp &= ((uint32_t)~(DMA_SxCR_CHSEL | DMA_SxCR_MBURST | DMA_SxCR_PBURST | \
DMA_SxCR_PL | DMA_SxCR_MSIZE | DMA_SxCR_PSIZE | \
DMA_SxCR_MINC | DMA_SxCR_PINC | DMA_SxCR_CIRC | \
DMA_SxCR_DIR | DMA_SxCR_CT | DMA_SxCR_DBM));
/* Prepare the DMA Stream configuration */
tmp |= hdma->Init.Channel | hdma->Init.Direction |
hdma->Init.PeriphInc | hdma->Init.MemInc |
hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
hdma->Init.Mode | hdma->Init.Priority;
/* the Memory burst and peripheral burst are not used when the FIFO is disabled */
if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
{
/* Get memory burst and peripheral burst */
tmp |= hdma->Init.MemBurst | hdma->Init.PeriphBurst;
}
/* Write to DMA Stream CR register */
hdma->Instance->CR = tmp;
/* Get the FCR register value */
tmp = hdma->Instance->FCR;
/* Clear Direct mode and FIFO threshold bits */
tmp &= (uint32_t)~(DMA_SxFCR_DMDIS | DMA_SxFCR_FTH);
/* Prepare the DMA Stream FIFO configuration */
tmp |= hdma->Init.FIFOMode;
/* the FIFO threshold is not used when the FIFO mode is disabled */
if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
{
/* Get the FIFO threshold */
tmp |= hdma->Init.FIFOThreshold;
}
/* Write to DMA Stream FCR */
hdma->Instance->FCR = tmp;
/* Initialize the error code */
hdma->ErrorCode = HAL_DMA_ERROR_NONE;
/* Initialize the DMA state */
hdma->State = HAL_DMA_STATE_READY;
return HAL_OK;
}
/**
* @brief DeInitializes the DMA peripheral
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Stream.
* @retval HAL status
*/
static HAL_StatusTypeDef _HAL_DMA_DeInit(DMA_HandleTypeDef *hdma)
{
/* Check the DMA peripheral state */
if(hdma == NULL)
{
return HAL_ERROR;
}
/* Check the DMA peripheral state */
if(hdma->State == HAL_DMA_STATE_BUSY)
{
return HAL_ERROR;
}
/* Disable the selected DMA Streamx */
__HAL_DMA_DISABLE(hdma);
/* Reset DMA Streamx control register */
hdma->Instance->CR = 0;
/* Reset DMA Streamx number of data to transfer register */
hdma->Instance->NDTR = 0;
/* Reset DMA Streamx peripheral address register */
hdma->Instance->PAR = 0;
/* Reset DMA Streamx memory 0 address register */
hdma->Instance->M0AR = 0;
/* Reset DMA Streamx memory 1 address register */
hdma->Instance->M1AR = 0;
/* Reset DMA Streamx FIFO control register */
hdma->Instance->FCR = (uint32_t)0x00000021;
/* Clear all flags */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
/* Initialize the error code */
hdma->ErrorCode = HAL_DMA_ERROR_NONE;
/* Initialize the DMA state */
hdma->State = HAL_DMA_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hdma);
return HAL_OK;
}
static void _HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma)
{
/* Transfer Error Interrupt management ***************************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != RESET)
{
/* Disable the transfer error interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_TE);
/* Clear the transfer error flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
/* Update error code */
hdma->ErrorCode |= HAL_DMA_ERROR_TE;
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if(hdma->XferErrorCallback != NULL)
{
/* Transfer error callback */
hdma->XferErrorCallback(hdma);
}
}
}
/* FIFO Error Interrupt management ******************************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_FE) != RESET)
{
/* Disable the FIFO Error interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_FE);
/* Clear the FIFO error flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
/* Update error code */
hdma->ErrorCode |= HAL_DMA_ERROR_FE;
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if(hdma->XferErrorCallback != NULL)
{
/* Transfer error callback */
hdma->XferErrorCallback(hdma);
}
}
}
/* Direct Mode Error Interrupt management ***********************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_DME) != RESET)
{
/* Disable the direct mode Error interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_DME);
/* Clear the direct mode error flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
/* Update error code */
hdma->ErrorCode |= HAL_DMA_ERROR_DME;
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if(hdma->XferErrorCallback != NULL)
{
/* Transfer error callback */
hdma->XferErrorCallback(hdma);
}
}
}
/* Half Transfer Complete Interrupt management ******************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET)
{
/* Multi_Buffering mode enabled */
if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
{
/* Clear the half transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
/* Current memory buffer used is Memory 0 */
if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
{
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
}
/* Current memory buffer used is Memory 1 */
else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
{
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_READY_HALF_MEM1;
}
}
else
{
/* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */
if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
{
/* Disable the half transfer interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT);
}
/* Clear the half transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
}
if(hdma->XferHalfCpltCallback != NULL)
{
/* Half transfer callback */
hdma->XferHalfCpltCallback(hdma);
}
}
}
/* Transfer Complete Interrupt management ***********************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET)
{
if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
{
/* Clear the transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
/* Current memory buffer used is Memory 1 */
if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
{
if(hdma->XferM1CpltCallback != NULL)
{
/* Transfer complete Callback for memory1 */
hdma->XferM1CpltCallback(hdma);
}
}
/* Current memory buffer used is Memory 0 */
else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
{
if(hdma->XferCpltCallback != NULL)
{
/* Transfer complete Callback for memory0 */
hdma->XferCpltCallback(hdma);
}
}
}
/* Disable the transfer complete interrupt if the DMA mode is not CIRCULAR */
else
{
if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
{
/* Disable the transfer complete interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_TC);
}
/* Clear the transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
/* Update error code */
hdma->ErrorCode |= HAL_DMA_ERROR_NONE;
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_READY_MEM0;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if(hdma->XferCpltCallback != NULL)
{
/* Transfer complete callback */
hdma->XferCpltCallback(hdma);
}
}
}
}
}
static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
/* Clear DBM bit */
hdma->Instance->CR &= (uint32_t)(~DMA_SxCR_DBM);
/* Configure DMA Stream data length */
hdma->Instance->NDTR = DataLength;
/* Peripheral to Memory */
if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
{
/* Configure DMA Stream destination address */
hdma->Instance->PAR = DstAddress;
/* Configure DMA Stream source address */
hdma->Instance->M0AR = SrcAddress;
}
/* Memory to Peripheral */
else
{
/* Configure DMA Stream source address */
hdma->Instance->PAR = SrcAddress;
/* Configure DMA Stream destination address */
hdma->Instance->M0AR = DstAddress;
}
}
static HAL_StatusTypeDef _HAL_DMA_Start_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
/* Process locked */
__HAL_LOCK(hdma);
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_BUSY;
/* Disable the peripheral */
__HAL_DMA_DISABLE(hdma);
/* Configure the source, destination address and the data length */
DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
/* Enable the transfer complete interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);
/* Enable the Half transfer complete interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);
/* Enable the transfer Error interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);
/* Enable the FIFO Error interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_FE);
/* Enable the direct mode Error interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_DME);
/* Enable the Peripheral */
__HAL_DMA_ENABLE(hdma);
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_SDRAM_Read_DMA(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize)
{
uint32_t tmp = 0;
/* Process Locked */
__HAL_LOCK(hsdram);
/* Check the SDRAM controller state */
tmp = hsdram->State;
if(tmp == HAL_SDRAM_STATE_BUSY)
{
return HAL_BUSY;
}
else if(tmp == HAL_SDRAM_STATE_PRECHARGED)
{
return HAL_ERROR;
}
/* Configure DMA user callbacks */
hsdram->hdma->XferCpltCallback = HAL_SDRAM_DMA_XferCpltCallback;
hsdram->hdma->XferErrorCallback = HAL_SDRAM_DMA_XferErrorCallback;
/* Enable the DMA Stream */
_HAL_DMA_Start_IT(hsdram->hdma, (uint32_t)pAddress, (uint32_t)pDstBuffer, (uint32_t)BufferSize);
/* Process Unlocked */
__HAL_UNLOCK(hsdram);
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_SDRAM_Write_32b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize)
{
__IO uint32_t *pSdramAddress = (uint32_t *)pAddress;
uint32_t tmp = 0;
/* Process Locked */
__HAL_LOCK(hsdram);
/* Check the SDRAM controller state */
tmp = hsdram->State;
if(tmp == HAL_SDRAM_STATE_BUSY)
{
return HAL_BUSY;
}
else if((tmp == HAL_SDRAM_STATE_PRECHARGED) || (tmp == HAL_SDRAM_STATE_WRITE_PROTECTED))
{
return HAL_ERROR;
}
/* Write data to memory */
for(; BufferSize != 0; BufferSize--)
{
*(__IO uint32_t *)pSdramAddress = *pSrcBuffer;
pSrcBuffer++;
pSdramAddress++;
}
/* Process Unlocked */
__HAL_UNLOCK(hsdram);
return HAL_OK;
}
static HAL_StatusTypeDef _HAL_SDRAM_Write_DMA(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize)
{
uint32_t tmp = 0;
/* Process Locked */
__HAL_LOCK(hsdram);
/* Check the SDRAM controller state */
tmp = hsdram->State;
if(tmp == HAL_SDRAM_STATE_BUSY)
{
return HAL_BUSY;
}
else if((tmp == HAL_SDRAM_STATE_PRECHARGED) || (tmp == HAL_SDRAM_STATE_WRITE_PROTECTED))
{
return HAL_ERROR;
}
/* Configure DMA user callbacks */
hsdram->hdma->XferCpltCallback = HAL_SDRAM_DMA_XferCpltCallback;
hsdram->hdma->XferErrorCallback = HAL_SDRAM_DMA_XferErrorCallback;
/* Enable the DMA Stream */
_HAL_DMA_Start_IT(hsdram->hdma, (uint32_t)pSrcBuffer, (uint32_t)pAddress, (uint32_t)BufferSize);
/* Process Unlocked */
__HAL_UNLOCK(hsdram);
return HAL_OK;
}
/**
* @brief Programs the SDRAM device.
* @param RefreshCount: SDRAM refresh counter value
* @retval None
*/
void BSP_SDRAM_Initialization_sequence(uint32_t RefreshCount)
{
__IO uint32_t tmpmrd = 0;
/* Step 1: Configure a clock configuration enable command */
Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = 0;
/* Send the command */
_HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 2: Insert 100 us minimum delay */
/* Inserted delay is equal to 1 ms due to systick time base unit (ms) */
gfxSleepMilliseconds(1);
/* Step 3: Configure a PALL (precharge all) command */
Command.CommandMode = FMC_SDRAM_CMD_PALL;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = 0;
/* Send the command */
_HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 4: Configure an Auto Refresh command */
Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 8;
Command.ModeRegisterDefinition = 0;
/* Send the command */
_HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 5: Program the external memory mode register */
tmpmrd = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_1 |\
SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL |\
SDRAM_MODEREG_CAS_LATENCY_2 |\
SDRAM_MODEREG_OPERATING_MODE_STANDARD |\
SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;
Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = tmpmrd;
/* Send the command */
_HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 6: Set the refresh rate counter */
/* Set the device refresh rate */
_HAL_SDRAM_ProgramRefreshRate(&sdramHandle, RefreshCount);
}
/**
* @brief Reads an amount of data from the SDRAM memory in polling mode.
* @param uwStartAddress: Read start address
* @param pData: Pointer to data to be read
* @param uwDataSize: Size of read data from the memory
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_ReadData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
{
if(_HAL_SDRAM_Read_32b(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
{
return SDRAM_ERROR;
}
else
{
return SDRAM_OK;
}
}
/**
* @brief Reads an amount of data from the SDRAM memory in DMA mode.
* @param uwStartAddress: Read start address
* @param pData: Pointer to data to be read
* @param uwDataSize: Size of read data from the memory
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_ReadData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
{
if(_HAL_SDRAM_Read_DMA(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
{
return SDRAM_ERROR;
}
else
{
return SDRAM_OK;
}
}
/**
* @brief Writes an amount of data to the SDRAM memory in polling mode.
* @param uwStartAddress: Write start address
* @param pData: Pointer to data to be written
* @param uwDataSize: Size of written data from the memory
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_WriteData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
{
if(_HAL_SDRAM_Write_32b(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
{
return SDRAM_ERROR;
}
else
{
return SDRAM_OK;
}
}
__weak void HAL_SDRAM_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma)
{
/* NOTE: This function Should not be modified, when the callback is needed,
the HAL_SDRAM_DMA_XferCpltCallback could be implemented in the user file
*/
}
/**
* @brief DMA transfer complete error callback.
* @param hdma: DMA handle
* @retval None
*/
__weak void HAL_SDRAM_DMA_XferErrorCallback(DMA_HandleTypeDef *hdma)
{
/* NOTE: This function Should not be modified, when the callback is needed,
the HAL_SDRAM_DMA_XferErrorCallback could be implemented in the user file
*/
}
static void _HAL_NVIC_EnableIRQ(IRQn_Type IRQn)
{
/* Enable interrupt */
NVIC_EnableIRQ(IRQn);
}
static void _HAL_NVIC_DisableIRQ(IRQn_Type IRQn)
{
/* Disable interrupt */
NVIC_DisableIRQ(IRQn);
}
/**
* @brief Writes an amount of data to the SDRAM memory in DMA mode.
* @param uwStartAddress: Write start address
* @param pData: Pointer to data to be written
* @param uwDataSize: Size of written data from the memory
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_WriteData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
{
if(_HAL_SDRAM_Write_DMA(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
{
return SDRAM_ERROR;
}
else
{
return SDRAM_OK;
}
}
/**
* @brief Sends command to the SDRAM bank.
* @param SdramCmd: Pointer to SDRAM command structure
* @retval SDRAM status
*/
uint8_t BSP_SDRAM_Sendcmd(FMC_SDRAM_CommandTypeDef *SdramCmd)
{
if(_HAL_SDRAM_SendCommand(&sdramHandle, SdramCmd, SDRAM_TIMEOUT) != HAL_OK)
{
return SDRAM_ERROR;
}
else
{
return SDRAM_OK;
}
}
static void _HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
{
uint32_t prioritygroup = 0x00;
prioritygroup = NVIC_GetPriorityGrouping();
NVIC_SetPriority(IRQn, NVIC_EncodePriority(prioritygroup, PreemptPriority, SubPriority));
}
/**
* @brief Handles SDRAM DMA transfer interrupt request.
* @retval None
*/
void BSP_SDRAM_DMA_IRQHandler(void)
{
_HAL_DMA_IRQHandler(sdramHandle.hdma);
}
/**
* @brief Initializes SDRAM MSP.
* @param hsdram: SDRAM handle
* @param Params
* @retval None
*/
__weak void BSP_SDRAM_MspInit(SDRAM_HandleTypeDef *hsdram, void *Params)
{
static DMA_HandleTypeDef dma_handle;
GPIO_InitTypeDef gpio_init_structure;
/* Enable FMC clock */
__HAL_RCC_FMC_CLK_ENABLE();
/* Enable chosen DMAx clock */
__DMAx_CLK_ENABLE();
/* Enable GPIOs clock */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
/* Common GPIO configuration */
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_PULLUP;
gpio_init_structure.Speed = GPIO_SPEED_FAST;
gpio_init_structure.Alternate = GPIO_AF12_FMC;
/* GPIOC configuration */
gpio_init_structure.Pin = GPIO_PIN_3;
HAL_GPIO_Init(GPIOC, &gpio_init_structure);
/* GPIOD configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_3 | GPIO_PIN_8 | GPIO_PIN_9 |
GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15;
HAL_GPIO_Init(GPIOD, &gpio_init_structure);
/* GPIOE configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7| GPIO_PIN_8 | GPIO_PIN_9 |\
GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
GPIO_PIN_15;
HAL_GPIO_Init(GPIOE, &gpio_init_structure);
/* GPIOF configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4 |\
GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
GPIO_PIN_15;
HAL_GPIO_Init(GPIOF, &gpio_init_structure);
/* GPIOG configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4| GPIO_PIN_5 | GPIO_PIN_8 |\
GPIO_PIN_15;
HAL_GPIO_Init(GPIOG, &gpio_init_structure);
/* GPIOH configuration */
gpio_init_structure.Pin = GPIO_PIN_3 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOH, &gpio_init_structure);
/* Configure common DMA parameters */
dma_handle.Init.Channel = SDRAM_DMAx_CHANNEL;
dma_handle.Init.Direction = DMA_MEMORY_TO_MEMORY;
dma_handle.Init.PeriphInc = DMA_PINC_ENABLE;
dma_handle.Init.MemInc = DMA_MINC_ENABLE;
dma_handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
dma_handle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
dma_handle.Init.Mode = DMA_NORMAL;
dma_handle.Init.Priority = DMA_PRIORITY_HIGH;
dma_handle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
dma_handle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
dma_handle.Init.MemBurst = DMA_MBURST_SINGLE;
dma_handle.Init.PeriphBurst = DMA_PBURST_SINGLE;
dma_handle.Instance = SDRAM_DMAx_STREAM;
/* Associate the DMA handle */
__HAL_LINKDMA(hsdram, hdma, dma_handle);
/* Deinitialize the stream for new transfer */
_HAL_DMA_DeInit(&dma_handle);
/* Configure the DMA stream */
_HAL_DMA_Init(&dma_handle);
/* NVIC configuration for DMA transfer complete interrupt */
_HAL_NVIC_SetPriority(SDRAM_DMAx_IRQn, 5, 0);
_HAL_NVIC_EnableIRQ(SDRAM_DMAx_IRQn);
}
/**
* @brief DeInitializes SDRAM MSP.
* @param hsdram: SDRAM handle
* @param Params
* @retval None
*/
__weak void BSP_SDRAM_MspDeInit(SDRAM_HandleTypeDef *hsdram, void *Params)
{
static DMA_HandleTypeDef dma_handle;
/* Disable NVIC configuration for DMA interrupt */
_HAL_NVIC_DisableIRQ(SDRAM_DMAx_IRQn);
/* Deinitialize the stream for new transfer */
dma_handle.Instance = SDRAM_DMAx_STREAM;
_HAL_DMA_DeInit(&dma_handle);
/* GPIO pins clock, FMC clock and DMA clock can be shut down in the applications
by surcharging this __weak function */
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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