4a3b6b964c
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2448 42af7a65-404d-4744-a932-0658087f49c3
123 lines
5.1 KiB
C
123 lines
5.1 KiB
C
/****************************************************************************
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* arch/arm/src/imx/imx_gpio.c
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* arch/arm/src/chip/imx_gpio.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 "chip.h"
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#include "up_arch.h"
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#include "imx_gpio.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Funtions
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****************************************************************************/
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/****************************************************************************
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* Name: imxgpio_configoutput
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****************************************************************************/
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void imxgpio_configoutput(int port, int bit, int value)
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{
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imxgpio_configinput(port, bit); /* Same as input except: */
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imxgpio_dirout(port, bit); /* Output */
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if (value)
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{
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imxgpio_setoutput(port, bit); /* Set output = 1 */
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}
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else
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{
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imxgpio_clroutput(port, bit); /* Set output = 0 */
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}
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}
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/****************************************************************************
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* Name: imxgpio_configinput
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****************************************************************************/
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void imxgpio_configinput(int port, int bit)
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{
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imxgpio_pullupdisable(port, bit); /* No pullup */
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imxgpio_dirin(port, bit); /* Input */
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imxgpio_gpiofunc(port, bit); /* Use as GPIO */
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imxgpio_primaryperipheralfunc(port, bit); /* Not necessary */
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imxgpio_ocrain(port, bit); /* Output AIN */
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imxgpio_aoutgpio(port, bit); /* AOUT input is GPIO */
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imxgpio_boutgpio(port, bit); /* BOUT input is GPIO */
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}
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/****************************************************************************
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* Name: imxgpio_configpfoutput
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****************************************************************************/
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void imxgpio_configpfoutput(int port, int bit)
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{
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imxgpio_configinput(port, bit); /* Same as input except: */
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imxgpio_peripheralfunc(port, bit); /* Use as peripheral */
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imxgpio_primaryperipheralfunc(port, bit); /* Primary function*/
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imxgpio_dirout(port, bit); /* Make output */
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}
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/****************************************************************************
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* Name: imxgpio_configpfinput
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****************************************************************************/
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void imxgpio_configpfinput(int port, int bit)
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{
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imxgpio_configinput(port, bit); /* Same as input except: */
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imxgpio_peripheralfunc(port, bit); /* Use as peripheral */
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imxgpio_primaryperipheralfunc(port, bit); /* Primary function*/
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}
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