/** ****************************************************************************** * @file stm32f4xx_hal_sram.c * @author MCD Application Team * @version V1.4.1 * @date 09-October-2015 * @brief SRAM HAL module driver. * This file provides a generic firmware to drive SRAM memories * mounted as external device. * @verbatim ============================================================================== ##### How to use this driver ##### ============================================================================== [..] This driver is a generic layered driver which contains a set of APIs used to control SRAM memories. It uses the FMC layer functions to interface with SRAM devices. The following sequence should be followed to configure the FMC/FSMC to interface with SRAM/PSRAM memories: (#) Declare a SRAM_HandleTypeDef handle structure, for example: SRAM_HandleTypeDef hsram; and: (++) Fill the SRAM_HandleTypeDef handle "Init" field with the allowed values of the structure member. (++) Fill the SRAM_HandleTypeDef handle "Instance" field with a predefined base register instance for NOR or SRAM device (++) Fill the SRAM_HandleTypeDef handle "Extended" field with a predefined base register instance for NOR or SRAM extended mode (#) Declare two FMC_NORSRAM_TimingTypeDef structures, for both normal and extended mode timings; for example: FMC_NORSRAM_TimingTypeDef Timing and FMC_NORSRAM_TimingTypeDef ExTiming; and fill its fields with the allowed values of the structure member. (#) Initialize the SRAM Controller by calling the function HAL_SRAM_Init(). This function performs the following sequence: (##) MSP hardware layer configuration using the function HAL_SRAM_MspInit() (##) Control register configuration using the FMC NORSRAM interface function FMC_NORSRAM_Init() (##) Timing register configuration using the FMC NORSRAM interface function FMC_NORSRAM_Timing_Init() (##) Extended mode Timing register configuration using the FMC NORSRAM interface function FMC_NORSRAM_Extended_Timing_Init() (##) Enable the SRAM device using the macro __FMC_NORSRAM_ENABLE() (#) At this stage you can perform read/write accesses from/to the memory connected to the NOR/SRAM Bank. You can perform either polling or DMA transfer using the following APIs: (++) HAL_SRAM_Read()/HAL_SRAM_Write() for polling read/write access (++) HAL_SRAM_Read_DMA()/HAL_SRAM_Write_DMA() for DMA read/write transfer (#) You can also control the SRAM device by calling the control APIs HAL_SRAM_WriteOperation_Enable()/ HAL_SRAM_WriteOperation_Disable() to respectively enable/disable the SRAM write operation (#) You can continuously monitor the SRAM device HAL state by calling the function HAL_SRAM_GetState() @endverbatim ****************************************************************************** * @attention * *

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* * 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 "stm32f4xx_hal.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @defgroup SRAM SRAM * @brief SRAM driver modules * @{ */ #ifdef HAL_SRAM_MODULE_ENABLED #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) ||\ defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /** @defgroup SRAM_Exported_Functions SRAM Exported Functions * @{ */ /** @defgroup SRAM_Exported_Functions_Group1 Initialization and de-initialization functions * @brief Initialization and Configuration functions * @verbatim ============================================================================== ##### SRAM Initialization and de_initialization functions ##### ============================================================================== [..] This section provides functions allowing to initialize/de-initialize the SRAM memory @endverbatim * @{ */ /** * @brief Performs the SRAM device initialization sequence * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param Timing: Pointer to SRAM control timing structure * @param ExtTiming: Pointer to SRAM extended mode timing structure * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Init(SRAM_HandleTypeDef *hsram, FMC_NORSRAM_TimingTypeDef *Timing, FMC_NORSRAM_TimingTypeDef *ExtTiming) { /* Check the SRAM handle parameter */ if(hsram == NULL) { return HAL_ERROR; } if(hsram->State == HAL_SRAM_STATE_RESET) { /* Allocate lock resource and initialize it */ hsram->Lock = HAL_UNLOCKED; /* Initialize the low level hardware (MSP) */ HAL_SRAM_MspInit(hsram); } /* Initialize SRAM control Interface */ FMC_NORSRAM_Init(hsram->Instance, &(hsram->Init)); /* Initialize SRAM timing Interface */ FMC_NORSRAM_Timing_Init(hsram->Instance, Timing, hsram->Init.NSBank); /* Initialize SRAM extended mode timing Interface */ FMC_NORSRAM_Extended_Timing_Init(hsram->Extended, ExtTiming, hsram->Init.NSBank, hsram->Init.ExtendedMode); /* Enable the NORSRAM device */ __FMC_NORSRAM_ENABLE(hsram->Instance, hsram->Init.NSBank); return HAL_OK; } /** * @brief Performs the SRAM device De-initialization sequence. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_DeInit(SRAM_HandleTypeDef *hsram) { /* De-Initialize the low level hardware (MSP) */ HAL_SRAM_MspDeInit(hsram); /* Configure the SRAM registers with their reset values */ FMC_NORSRAM_DeInit(hsram->Instance, hsram->Extended, hsram->Init.NSBank); hsram->State = HAL_SRAM_STATE_RESET; /* Release Lock */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief SRAM MSP Init. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval None */ __weak void HAL_SRAM_MspInit(SRAM_HandleTypeDef *hsram) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_SRAM_MspInit could be implemented in the user file */ } /** * @brief SRAM MSP DeInit. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval None */ __weak void HAL_SRAM_MspDeInit(SRAM_HandleTypeDef *hsram) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_SRAM_MspDeInit could be implemented in the user file */ } /** * @brief DMA transfer complete callback. * @param hdma: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval None */ __weak void HAL_SRAM_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_SRAM_DMA_XferCpltCallback could be implemented in the user file */ } /** * @brief DMA transfer complete error callback. * @param hdma: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval None */ __weak void HAL_SRAM_DMA_XferErrorCallback(DMA_HandleTypeDef *hdma) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_SRAM_DMA_XferErrorCallback could be implemented in the user file */ } /** * @} */ /** @defgroup SRAM_Exported_Functions_Group2 Input and Output functions * @brief Input Output and memory control functions * @verbatim ============================================================================== ##### SRAM Input and Output functions ##### ============================================================================== [..] This section provides functions allowing to use and control the SRAM memory @endverbatim * @{ */ /** * @brief Reads 8-bit buffer from SRAM memory. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to read start address * @param pDstBuffer: Pointer to destination buffer * @param BufferSize: Size of the buffer to read from memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Read_8b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint8_t *pDstBuffer, uint32_t BufferSize) { __IO uint8_t * pSramAddress = (uint8_t *)pAddress; /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Read data from memory */ for(; BufferSize != 0; BufferSize--) { *pDstBuffer = *(__IO uint8_t *)pSramAddress; pDstBuffer++; pSramAddress++; } /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Writes 8-bit buffer to SRAM memory. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to write start address * @param pSrcBuffer: Pointer to source buffer to write * @param BufferSize: Size of the buffer to write to memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Write_8b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint8_t *pSrcBuffer, uint32_t BufferSize) { __IO uint8_t * pSramAddress = (uint8_t *)pAddress; /* Check the SRAM controller state */ if(hsram->State == HAL_SRAM_STATE_PROTECTED) { return HAL_ERROR; } /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Write data to memory */ for(; BufferSize != 0; BufferSize--) { *(__IO uint8_t *)pSramAddress = *pSrcBuffer; pSrcBuffer++; pSramAddress++; } /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Reads 16-bit buffer from SRAM memory. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to read start address * @param pDstBuffer: Pointer to destination buffer * @param BufferSize: Size of the buffer to read from memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Read_16b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint16_t *pDstBuffer, uint32_t BufferSize) { __IO uint16_t * pSramAddress = (uint16_t *)pAddress; /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Read data from memory */ for(; BufferSize != 0; BufferSize--) { *pDstBuffer = *(__IO uint16_t *)pSramAddress; pDstBuffer++; pSramAddress++; } /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Writes 16-bit buffer to SRAM memory. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to write start address * @param pSrcBuffer: Pointer to source buffer to write * @param BufferSize: Size of the buffer to write to memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Write_16b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint16_t *pSrcBuffer, uint32_t BufferSize) { __IO uint16_t * pSramAddress = (uint16_t *)pAddress; /* Check the SRAM controller state */ if(hsram->State == HAL_SRAM_STATE_PROTECTED) { return HAL_ERROR; } /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Write data to memory */ for(; BufferSize != 0; BufferSize--) { *(__IO uint16_t *)pSramAddress = *pSrcBuffer; pSrcBuffer++; pSramAddress++; } /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Reads 32-bit buffer from SRAM memory. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to read start address * @param pDstBuffer: Pointer to destination buffer * @param BufferSize: Size of the buffer to read from memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Read_32b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize) { /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Read data from memory */ for(; BufferSize != 0; BufferSize--) { *pDstBuffer = *(__IO uint32_t *)pAddress; pDstBuffer++; pAddress++; } /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Writes 32-bit buffer to SRAM memory. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to write start address * @param pSrcBuffer: Pointer to source buffer to write * @param BufferSize: Size of the buffer to write to memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Write_32b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize) { /* Check the SRAM controller state */ if(hsram->State == HAL_SRAM_STATE_PROTECTED) { return HAL_ERROR; } /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Write data to memory */ for(; BufferSize != 0; BufferSize--) { *(__IO uint32_t *)pAddress = *pSrcBuffer; pSrcBuffer++; pAddress++; } /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Reads a Words data from the SRAM memory using DMA transfer. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to read start address * @param pDstBuffer: Pointer to destination buffer * @param BufferSize: Size of the buffer to read from memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Read_DMA(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize) { /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Configure DMA user callbacks */ hsram->hdma->XferCpltCallback = HAL_SRAM_DMA_XferCpltCallback; hsram->hdma->XferErrorCallback = HAL_SRAM_DMA_XferErrorCallback; /* Enable the DMA Stream */ HAL_DMA_Start_IT(hsram->hdma, (uint32_t)pAddress, (uint32_t)pDstBuffer, (uint32_t)BufferSize); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Writes a Words data buffer to SRAM memory using DMA transfer. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @param pAddress: Pointer to write start address * @param pSrcBuffer: Pointer to source buffer to write * @param BufferSize: Size of the buffer to write to memory * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_Write_DMA(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize) { /* Check the SRAM controller state */ if(hsram->State == HAL_SRAM_STATE_PROTECTED) { return HAL_ERROR; } /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Configure DMA user callbacks */ hsram->hdma->XferCpltCallback = HAL_SRAM_DMA_XferCpltCallback; hsram->hdma->XferErrorCallback = HAL_SRAM_DMA_XferErrorCallback; /* Enable the DMA Stream */ HAL_DMA_Start_IT(hsram->hdma, (uint32_t)pSrcBuffer, (uint32_t)pAddress, (uint32_t)BufferSize); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @} */ /** @defgroup SRAM_Exported_Functions_Group3 Control functions * @brief management functions * @verbatim ============================================================================== ##### SRAM Control functions ##### ============================================================================== [..] This subsection provides a set of functions allowing to control dynamically the SRAM interface. @endverbatim * @{ */ /** * @brief Enables dynamically SRAM write operation. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_WriteOperation_Enable(SRAM_HandleTypeDef *hsram) { /* Process Locked */ __HAL_LOCK(hsram); /* Enable write operation */ FMC_NORSRAM_WriteOperation_Enable(hsram->Instance, hsram->Init.NSBank); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_READY; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @brief Disables dynamically SRAM write operation. * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval HAL status */ HAL_StatusTypeDef HAL_SRAM_WriteOperation_Disable(SRAM_HandleTypeDef *hsram) { /* Process Locked */ __HAL_LOCK(hsram); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_BUSY; /* Disable write operation */ FMC_NORSRAM_WriteOperation_Disable(hsram->Instance, hsram->Init.NSBank); /* Update the SRAM controller state */ hsram->State = HAL_SRAM_STATE_PROTECTED; /* Process unlocked */ __HAL_UNLOCK(hsram); return HAL_OK; } /** * @} */ /** @defgroup SRAM_Exported_Functions_Group4 State functions * @brief Peripheral State functions * @verbatim ============================================================================== ##### SRAM State functions ##### ============================================================================== [..] This subsection permits to get in run-time the status of the SRAM controller and the data flow. @endverbatim * @{ */ /** * @brief Returns the SRAM controller state * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains * the configuration information for SRAM module. * @retval HAL state */ HAL_SRAM_StateTypeDef HAL_SRAM_GetState(SRAM_HandleTypeDef *hsram) { return hsram->State; } /** * @} */ /** * @} */ #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\ STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx */ #endif /* HAL_SRAM_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ '>229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396
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