text: /****************************************************************************
   * boards/arm/stm32/stm3220g-eval/src/stm32_deselectsram.c
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <debug.h>
  
  #include "arm_arch.h"
  #include "stm32.h"
  #include "stm3220g-eval.h"
  
  #ifdef CONFIG_STM32_FSMC
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /****************************************************************************
   * Public Data
   ****************************************************************************/
  
  /****************************************************************************
   * Private Data
   ****************************************************************************/
  
  /****************************************************************************
   * Private Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: stm32_deselectsram
   *
   * Description:
   *   Disable SRAM
   *
   ****************************************************************************/
  
  void stm32_deselectsram(void)
  {
    /* Restore registers to their power up settings */
  
    putreg32(FSMC_BCR_RSTVALUE, STM32_FSMC_BCR2);
  
    /* Bank1 NOR/SRAM timing register configuration */
  
    putreg32(FSMC_BTR_RSTVALUE, STM32_FSMC_BTR2);
  
    /* Disable AHB clocking to the FSMC */
  
    stm32_fsmc_disable();
  }
  
  #endif /* CONFIG_STM32_FSMC */
  