/****************************************************************************
* arch/arm/src/nuc/nuc_gpio.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include "up_arch.h"
#include "chip.h"
#include "nuc_gpio.h"
#ifdef CONFIG_DEBUG
/****************************************************************************
* Private Data
****************************************************************************/
/* Port letters for prettier debug output */
#ifdef CONFIG_DEBUG
static const char g_portchar[NUC_GPIO_NPORTS] =
{
#if NUC_GPIO_NPORTS > 9
# error "Additional support required for this number of GPIOs"
#elif NUC_GPIO_NPORTS > 8
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I'
#elif NUC_GPIO_NPORTS > 7
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'
#elif NUC_GPIO_NPORTS > 6
'A', 'B', 'C', 'D', 'E', 'F', 'G'
#elif NUC_GPIO_NPORTS > 5
'A', 'B', 'C', 'D', 'E', 'F'
#elif NUC_GPIO_NPORTS > 4
'A', 'B', 'C', 'D', 'E'
#elif NUC_GPIO_NPORTS > 3
'A', 'B', 'C', 'D'
#elif NUC_GPIO_NPORTS > 2
'A', 'B', 'C'
#elif NUC_GPIO_NPORTS > 1
'A', 'B'
#elif NUC_GPIO_NPORTS > 0
'A'
#else
# error "Bad number of GPIOs"
#endif
};
#endif
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Function: nuc_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the provided pin description
* along with a descriptive messasge.
*
****************************************************************************/
void nuc_dumpgpio(gpio_cfgset_t pinset, const char *msg)
{
irqstate_t flags;
uintptr_t base;
int port;
/* Decode the port and pin. Use the port number to get the GPIO base
* address.
*/
port = (pinset & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
DEBUGASSERT((unsigned)port <= NUC_GPIO_PORTE);
base = NUC_GPIO_CTRL_BASE(port);
/* The following requires exclusive access to the GPIO registers */
flags = irqsave();
lldbg("GPIO%c pinset: %08x base: %08x -- %s\n",
g_portchar[port], pinset, base, msg);
lldbg(" PMD: %08x OFFD: %08x DOUT: %08x DMASK: %08x\n",
getreg32(base + NUC_GPIO_PMD_OFFSET),
getreg32(base + NUC_GPIO_OFFD_OFFSET),
getreg32(base + NUC_GPIO_DOUT_OFFSET),
getreg32(base + NUC_GPIO_DMASK_OFFSET));
lldbg(" PIN: %08x DBEN: %08x IMD: %08x IEN: %08x\n",
getreg32(base + NUC_GPIO_PIN_OFFSET),
getreg32(base + NUC_GPIO_DBEN_OFFSET),
getreg32(base + NUC_GPIO_IMD_OFFSET),
getreg32(base + NUC_GPIO_IEN_OFFSET));
lldbg(" ISRC: %08x\n",
getreg32(base + NUC_GPIO_ISRC_OFFSET));
irqrestore(flags);
}
#endif /* CONFIG_DEBUG */
