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/****************************************************************************
* arch/arm/src/lm3s/lm3s_dumpgpio.c
*
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "up_arch.h"
#include "chip.h"
#include "lm3s_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/* NOTE: this is duplicated in lm3s_gpio.c */
#ifdef LM3S_GPIOH_BASE
static const uint32_t g_gpiobase[8] =
{
LM3S_GPIOA_BASE, LM3S_GPIOB_BASE, LM3S_GPIOC_BASE, LM3S_GPIOD_BASE,
LM3S_GPIOE_BASE, LM3S_GPIOF_BASE, LM3S_GPIOG_BASE, LM3S_GPIOH_BASE,
};
static const char g_portchar[8] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H' };
#else
static const uint32_t g_gpiobase[8] =
{
LM3S_GPIOA_BASE, LM3S_GPIOB_BASE, LM3S_GPIOC_BASE, LM3S_GPIOD_BASE,
LM3S_GPIOE_BASE, LM3S_GPIOF_BASE, LM3S_GPIOG_BASE, 0,
};
static const char g_portchar[8] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', '?' };
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: lm3s_gpiobaseaddress
*
* Description:
* Given a GPIO enumeration value, return the base address of the
* associated GPIO registers.
*
****************************************************************************/
static inline uint32_t lm3s_gpiobaseaddress(int port)
{
return g_gpiobase[port & 7];
}
/****************************************************************************
* Name: lm3s_gpioport
*
* Description:
* Given a GPIO enumeration value, return the base address of the
* associated GPIO registers.
*
****************************************************************************/
static inline uint8_t lm3s_gpioport(int port)
{
return g_portchar[port & 7];
}
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Function: lm3s_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the provided base address
*
****************************************************************************/
int lm3s_dumpgpio(uint32_t pinset, const char *msg)
{
irqstate_t flags;
unsigned int port = (pinset & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
uint32_t base;
uint32_t rcgc2;
bool enabled;
/* Get the base address associated with the GPIO port */
base = lm3s_gpiobaseaddress(port);
DEBUGASSERT(base != 0);
/* The following requires exclusive access to the GPIO registers */
flags = irqsave();
rcgc2 = getreg32(LM3S_SYSCON_RCGC2);
enabled = ((rcgc2 & SYSCON_RCGC2_GPIO(port)) != 0);
lldbg("GPIO%c pinset: %08x base: %08x -- %s\n",
lm3s_gpioport(port), pinset, base, msg);
lldbg(" RCGC2: %08x (%s)\n",
rcgc2, enabled ? "enabled" : "disabled" );
/* Don't bother with the rest unless the port is enabled */
if (enabled)
{
lldbg(" AFSEL: %02x DEN: %02x DIR: %02x DATA: %02x\n",
getreg32(base + LM3S_GPIO_AFSEL_OFFSET), getreg32(base + LM3S_GPIO_DEN_OFFSET),
getreg32(base + LM3S_GPIO_DIR_OFFSET), getreg32(base + LM3S_GPIO_DATA_OFFSET + 0x3fc));
lldbg(" IS: %02x IBE: %02x IEV: %02x IM: %02x RIS: %08x MIS: %08x\n",
getreg32(base + LM3S_GPIO_IEV_OFFSET), getreg32(base + LM3S_GPIO_IM_OFFSET),
getreg32(base + LM3S_GPIO_RIS_OFFSET), getreg32(base + LM3S_GPIO_MIS_OFFSET));
lldbg(" 2MA: %02x 4MA: %02x 8MA: %02x ODR: %02x PUR %02x PDR: %02x SLR: %02x\n",
getreg32(base + LM3S_GPIO_DR2R_OFFSET), getreg32(base + LM3S_GPIO_DR4R_OFFSET),
getreg32(base + LM3S_GPIO_DR8R_OFFSET), getreg32(base + LM3S_GPIO_ODR_OFFSET),
getreg32(base + LM3S_GPIO_PUR_OFFSET), getreg32(base + LM3S_GPIO_PDR_OFFSET),
getreg32(base + LM3S_GPIO_SLR_OFFSET));
}
irqrestore(flags);
return OK;
}
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