e770ad56d1
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5680 42af7a65-404d-4744-a932-0658087f49c3
144 lines
4.9 KiB
C
144 lines
4.9 KiB
C
/****************************************************************************
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* arch/arm/src/nuc/nuc_gpio.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 <sys/types.h>
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#include <debug.h>
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#include "up_arch.h"
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#include "chip.h"
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#include "nuc_gpio.h"
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#ifdef CONFIG_DEBUG
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Port letters for prettier debug output */
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#ifdef CONFIG_DEBUG
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static const char g_portchar[NUC_GPIO_NPORTS] =
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{
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#if NUC_GPIO_NPORTS > 9
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# error "Additional support required for this number of GPIOs"
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#elif NUC_GPIO_NPORTS > 8
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I'
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#elif NUC_GPIO_NPORTS > 7
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'
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#elif NUC_GPIO_NPORTS > 6
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'A', 'B', 'C', 'D', 'E', 'F', 'G'
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#elif NUC_GPIO_NPORTS > 5
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'A', 'B', 'C', 'D', 'E', 'F'
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#elif NUC_GPIO_NPORTS > 4
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'A', 'B', 'C', 'D', 'E'
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#elif NUC_GPIO_NPORTS > 3
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'A', 'B', 'C', 'D'
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#elif NUC_GPIO_NPORTS > 2
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'A', 'B', 'C'
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#elif NUC_GPIO_NPORTS > 1
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'A', 'B'
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#elif NUC_GPIO_NPORTS > 0
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'A'
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#else
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# error "Bad number of GPIOs"
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#endif
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};
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#endif
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/****************************************************************************
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* Public 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 Functions
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****************************************************************************/
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/****************************************************************************
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* Function: nuc_dumpgpio
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*
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* Description:
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* Dump all GPIO registers associated with the provided pin description
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* along with a descriptive messasge.
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*
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****************************************************************************/
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void nuc_dumpgpio(gpio_cfgset_t pinset, const char *msg)
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{
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irqstate_t flags;
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uintptr_t base;
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int port;
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/* Decode the port and pin. Use the port number to get the GPIO base
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* address.
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*/
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port = (pinset & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
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DEBUGASSERT((unsigned)port <= NUC_GPIO_PORTE);
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base = NUC_GPIO_CTRL_BASE(port);
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/* The following requires exclusive access to the GPIO registers */
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flags = irqsave();
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lldbg("GPIO%c pinset: %08x base: %08x -- %s\n",
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g_portchar[port], pinset, base, msg);
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lldbg(" PMD: %08x OFFD: %08x DOUT: %08x DMASK: %08x\n",
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getreg32(base + NUC_GPIO_PMD_OFFSET),
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getreg32(base + NUC_GPIO_OFFD_OFFSET),
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getreg32(base + NUC_GPIO_DOUT_OFFSET),
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getreg32(base + NUC_GPIO_DMASK_OFFSET));
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lldbg(" PIN: %08x DBEN: %08x IMD: %08x IEN: %08x\n",
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getreg32(base + NUC_GPIO_PIN_OFFSET),
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getreg32(base + NUC_GPIO_DBEN_OFFSET),
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getreg32(base + NUC_GPIO_IMD_OFFSET),
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getreg32(base + NUC_GPIO_IEN_OFFSET));
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lldbg(" ISRC: %08x\n",
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getreg32(base + NUC_GPIO_ISRC_OFFSET));
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irqrestore(flags);
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}
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#endif /* CONFIG_DEBUG */
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