diff options
Diffstat (limited to 'nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c')
-rw-r--r-- | nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c b/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c new file mode 100644 index 000000000..766ad911b --- /dev/null +++ b/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c @@ -0,0 +1,154 @@ +/**************************************************************************** + * arch/arm/src/lm3s/lm3s_dumpgpio.c + * + * Copyright (C) 2009 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 <sys/types.h> + +#include <debug.h> + +#include <nuttx/arch.h> + +#include "up_arch.h" + +#include "chip.h" +#include "lm3s_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/* NOTE: this is duplicated in lm3s_gpio.c */ + +static const uint32 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' }; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: lm3s_gpiobaseaddress + * + * Description: + * Given a GPIO enumeration value, return the base address of the + * associated GPIO registers. + * + ****************************************************************************/ + +static inline uint32 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 ubyte 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 pinset, const char *msg) +{ + irqstate_t flags; + unsigned int port = (pinset & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT; + uint32 base; + uint32 rcgc2; + boolean enabled; + + /* Get the base address associated with the GPIO port */ + + base = lm3s_gpiobaseaddress(port); + + /* 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: %02x MIS: %02x\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); +} |