134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/****************************************************************************
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* boards/arm/sam34/sam3u-ek/src/sam_mmcsd.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <debug.h>
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#include "sam_gpio.h"
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#include "sam3u-ek.h"
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#ifdef CONFIG_SAM34_HSMCI
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* This needs to be extended.
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* The card detect GPIO must be configured as an interrupt.
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* when the interrupt indicating that a card has been inserted or removed
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* is received, this function must call sio_mediachange() to handle that
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* event.
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* See arch/arm/src/sam34/sam_hsmci.h for more information.
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*
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* Also see the SAMA5D3x-EK implementation of this same logic.
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* The card detect interrupt handling should be a drop-in.
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*/
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#ifdef GPIO_MCI_CD
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# warning "Card detect interrupt handling needed"
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#endif
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/* Usually defined in NuttX header files */
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_hsmciinit
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*
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* Description:
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* Initialize HSMCI support. This function is called very early in board
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* initialization.
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*
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****************************************************************************/
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int sam_hsmciinit(void)
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{
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#ifdef GPIO_MCI_CD
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sam_configgpio(GPIO_MCI_CD);
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#endif
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#ifdef GPIO_MCI_WP
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sam_configgpio(GPIO_MCI_WP);
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#endif
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return OK;
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}
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/****************************************************************************
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* Name: sam_cardinserted
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*
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* Description:
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* Check if a card is inserted into the selected HSMCI slot
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*
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****************************************************************************/
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bool sam_cardinserted(unsigned char slot)
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{
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if (slot == 0)
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{
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#ifdef GPIO_MCI_CD
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bool inserted = sam_gpioread(GPIO_MCI_CD);
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finfo("inserted: %s\n", inserted ? "NO" : "YES");
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return !inserted;
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#else
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return true;
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#endif
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}
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return false;
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}
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/****************************************************************************
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* Name: sam_writeprotected
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*
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* Description:
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* Check if a card is inserted into the selected HSMCI slot
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*
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****************************************************************************/
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bool sam_writeprotected(unsigned char slot)
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{
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if (slot == 0)
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{
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#ifdef GPIO_MCI_WP
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bool protected = sam_gpioread(GPIO_MCI_WP);
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finfo("protected: %s\n", inserted ? "YES" : "NO");
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return protected;
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#else
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return false;
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#endif
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}
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return false;
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}
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#endif /* CONFIG_SAM34_HSMCI */
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