79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/****************************************************************************
|
|
* boards/arm/stm32/stm3240g-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_internal.h"
|
|
#include "stm32.h"
|
|
#include "stm3240g-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 */
|