Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L053R8/stm32l0xx_hal_flash_ramfunc.c

Revision:

181:a4cbdfbbd2f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L053R8/stm32l0xx_hal_flash_ramfunc.c	Wed May 07 13:15:08 2014 +0100
@@ -0,0 +1,212 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_hal_flash_ramfunc.c
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    22-April-2014
+  * @brief   FLASH RAMFUNC driver.
+  *          This file provides a Flash firmware functions which should be 
+  *          executed from internal SRAM
+  *            + FLASH HalfPage Programming
+  *            + FLASH Power Down in Run mode
+  *
+  *  @verbatim
+
+    *** ARM Compiler ***
+    --------------------
+    [..] RAM functions are defined using the toolchain options. 
+         Functions that are be executed in RAM should reside in a separate
+         source module. Using the 'Options for File' dialog you can simply change
+         the 'Code / Const' area of a module to a memory space in physical RAM.
+         Available memory areas are declared in the 'Target' tab of the 
+         Options for Target' dialog.
+
+    *** ICCARM Compiler ***
+    -----------------------
+    [..] RAM functions are defined using a specific toolchain keyword "__ramfunc".
+
+    *** GNU Compiler ***
+    --------------------
+    [..] RAM functions are defined using a specific toolchain attribute
+         "__attribute__((section(".RamFunc")))".
+  
+  @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 "stm32l0xx_hal.h"
+/** @addtogroup STM32L0XX_HAL_Driver
+  * @{
+  */
+
+/** @defgroup FLASH_RAMFUNC Driver
+  * @brief FLASH functions executed from RAM
+  * @{
+  */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+static __RAM_FUNC  FLASH_Program_HalfPage(uint32_t Address, uint32_t *Data);
+
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup FLASH_RAMFUNC_Private_Functions
+  * @{
+  */
+
+/** @defgroup FLASH_RAMFUNC_Group1 Peripheral  features functions 
+ *  @brief   Data transfers functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### ramfunc functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions that should be executed from RAM 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Program a half page word at a specified address, 
+  * @note   This function should be executed from RAM        
+  * @param  Address:  specifies the address to be programmed, 
+  *         the address should be half page aligned.
+  * @param  *Data: specifies the buffer of data to be programmed,
+  *                the size of the buffer is 16 words.
+  * 
+  * @retval HAL_StatusTypeDef HAL Status
+  */
+__RAM_FUNC  FLASH_HalfPageProgram(uint32_t Address, uint32_t *Data)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  uint32_t timeout = 0xFFFFFFFF;
+  /*Program word (32-bit) at a specified address.*/
+  FLASH_Program_HalfPage(Address, Data);
+  
+  /* Wait for a FLASH operation to complete or a TIMEOUT to occur */
+  while(((FLASH->SR & FLASH_FLAG_BSY) != 0x00) && (timeout != 0x00))
+  {
+    timeout--;
+  }
+  
+  /* Reset PROG bit */
+  FLASH->PECR &= ~FLASH_PECR_PROG;
+  FLASH->PECR &= ~FLASH_PECR_FPRG;
+  return status;
+}
+
+/**
+  * @brief  Program a half page in program memory.
+  * @param  Address: The Half page address in program memory to be written.
+  * @param  Data:
+  * @retval None
+  */
+static __RAM_FUNC  FLASH_Program_HalfPage(uint32_t Address, uint32_t *Data)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  uint32_t i =0;
+  
+  /* Set PROG bit */
+  FLASH->PECR |= FLASH_PECR_PROG;
+  
+  /* Set FPRG bit */
+  FLASH->PECR |= FLASH_PECR_FPRG;
+
+  *(__IO uint32_t*)Address = Data[0];
+  
+  for(i = 1; i <= 15; i++)
+  {  
+    *(__IO uint32_t*)(Address + 4) = Data[i];
+  } 
+  return status;
+}
+
+/**
+  * @brief   Enable the Power down in Run Mode
+  * @note    This fuction should be called and executed from SRAM memory
+  * @param  None
+  * @retval None
+  */
+__RAM_FUNC  FLASH_EnableRunPowerDown(void)
+{
+  /* Enable the Power Down in Run mode*/
+  __HAL_FLASH_POWER_DOWN_ENABLE();
+  
+  return HAL_OK;
+  
+}
+
+/**
+  * @brief   Disable the Power down in Run Mode
+  * @note    This fuction should be called and executed from SRAM memory
+  * @param  None
+  * @retval None
+  */
+__RAM_FUNC  FLASH_DisableRunPowerDown(void)
+{
+  /* Disable the Power Down in Run mode*/
+  __HAL_FLASH_POWER_DOWN_DISABLE();
+
+  return HAL_OK;  
+}
+
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */   
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+
+  
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+     
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+