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diff --git a/nuttx/configs/freedom-kl25z/src/kl_adxl345.c b/nuttx/configs/freedom-kl25z/src/kl_adxl345.c
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+/************************************************************************************
+ * configs/freedom-kl25z/src/kl_adxl345.c
+ *
+ *   Copyright (C) 2014 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 <stdbool.h>
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/spi/spi.h>
+#include <nuttx/input/adxl345.h>
+
+#include <arch/irq.h>
+
+#include "freedom-kl25z.h"
+#include "kl_gpio.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+#ifdef CONFIG_INPUT_ADXL345
+#ifndef CONFIG_INPUT
+#  error "ADXL345 support requires CONFIG_INPUT"
+#endif
+
+#ifndef CONFIG_KL_SPI0
+#  error "ADXL345 support requires CONFIG_KL_SPI0"
+#endif
+
+#ifndef CONFIG_ADXL345_SPI
+#  error "Only the ADXL345 SPI interface is supported"
+#endif
+
+#ifdef CONFIG_ADXL345_I2C
+#  error "Only the ADXL345 SPI interface is supported"
+#endif
+
+#ifndef CONFIG_ADXL345_FREQUENCY
+#  define CONFIG_ADXL345_FREQUENCY 500000
+#endif
+
+#ifndef CONFIG_ADXL345_SPIDEV
+#  define CONFIG_ADXL345_SPIDEV 0
+#endif
+
+#if CONFIG_ADXL345_SPIDEV != 0
+#  error "CONFIG_ADXL345_SPIDEV must be zero"
+#endif
+
+#ifndef CONFIG_ADXL345_DEVMINOR
+#  define CONFIG_ADXL345_DEVMINOR 0
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct kl_adxl345config_s
+{
+  /* Configuration structure as seen by the ADXL345 driver */
+
+  struct adxl345_config_s config;
+
+  /* Additional private definitions only known to this driver */
+
+  ADXL345_HANDLE handle;   /* The ADXL345 driver handle */
+  xcpt_t         handler;  /* The ADXL345 interrupt handler */
+};
+
+/****************************************************************************
+ * Static Function Prototypes
+ ****************************************************************************/
+
+/* IRQ/GPIO access callbacks.  These operations all hidden behind callbacks
+ * to isolate the ADXL345 driver from differences in GPIO interrupt handling
+ * by varying boards and MCUs.
+ *
+ *   attach  - Attach the ADXL345 interrupt handler to the GPIO interrupt
+ *   enable  - Enable or disable the GPIO interrupt
+ *   clear   - Acknowledge/clear any pending GPIO interrupt
+ */
+
+static int  adxl345_attach(FAR struct adxl345_config_s *state, xcpt_t isr);
+static void adxl345_enable(FAR struct adxl345_config_s *state, bool enable);
+static void adxl345_clear(FAR struct adxl345_config_s *state);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* A reference to a structure of this type must be passed to the ADXL345
+ * driver.  This structure provides information about the configuration
+ * of the ADXL345 and provides some board-specific hooks.
+ *
+ * Memory for this structure is provided by the caller.  It is not copied
+ * by the driver and is presumed to persist while the driver is active. The
+ * memory must be writable because, under certain circumstances, the driver
+ * may modify frequency or X plate resistance values.
+ */
+
+static struct kl_adxl345config_s g_adxl345config =
+{
+  .config =
+  {
+#ifdef CONFIG_ADXL345_I2C
+    .address   = ADXL345_ADDR1,
+#endif
+    .frequency = CONFIG_ADXL345_FREQUENCY,
+
+    .attach    = adxl345_attach,
+    .enable    = adxl345_enable,
+    .clear     = adxl345_clear,
+  },
+  .handler     = NULL,
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/* IRQ/GPIO access callbacks.  These operations all hidden behind
+ * callbacks to isolate the ADXL345 driver from differences in GPIO
+ * interrupt handling by varying boards and MCUs.
+ *
+ *   attach  - Attach the ADXL345 interrupt handler to the GPIO interrupt
+ *   enable  - Enable or disable the GPIO interrupt
+ *  clear   - Acknowledge/clear any pending GPIO interrupt
+ */
+
+static int adxl345_attach(FAR struct adxl345_config_s *state, xcpt_t isr)
+{
+  FAR struct kl_adxl345config_s *priv = (FAR struct kl_adxl345config_s *)state;
+
+  ivdbg("Saving handler %p\n", isr);
+  DEBUGASSERT(priv);
+
+  /* Just save the handler.  We will use it when interrupts are enabled */
+
+  priv->handler = isr;
+  return OK;
+}
+
+static void adxl345_enable(FAR struct adxl345_config_s *state, bool enable)
+{
+  FAR struct kl_adxl345config_s *priv = (FAR struct kl_adxl345config_s *)state;
+  irqstate_t flags;
+
+  /* Attach and enable, or detach and disable.  Enabling and disabling GPIO
+   * interrupts is a multi-step process so the safest thing is to keep
+   * interrupts disabled during the reconfiguration.
+   */
+
+  flags = irqsave();
+  if (enable)
+    {
+      /* Configure the interrupt using the SAVED handler */
+
+      kl_configgpio(GPIO_ADXL345_INT1);
+      (void)kl_gpioirqattach(GPIO_ADXL345_INT1, priv->handler);
+      kl_gpioirqenable(GPIO_ADXL345_INT1); 
+    }
+  else
+    {
+      /* Configure the interrupt with a NULL handler to disable it */
+
+      (void)kl_gpioirqattach(GPIO_ADXL345_INT1, NULL);
+      kl_gpioirqdisable(GPIO_ADXL345_INT1); 
+    }
+
+  irqrestore(flags);
+}
+
+static void adxl345_clear(FAR struct adxl345_config_s *state)
+{
+  /* Does nothing */
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: adxl345_archinitialize
+ *
+ * Description:
+ *   Each board that supports an adxl345 device must provide this function.
+ *   This function is called by application-specific, setup logic to
+ *   configure the accelerometer device.  This function will register the
+ *   driver as /dev/accelN where N is the minor device number.
+ *
+ * Input Parameters:
+ *   minor   - The input device minor number
+ *
+ * Returned Value:
+ *   Zero is returned on success.  Otherwise, a negated errno value is
+ *   returned to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int adxl345_archinitialize(int minor)
+{
+  FAR struct spi_dev_s *dev;
+  int ret;
+
+  idbg("minor %d\n", minor);
+  DEBUGASSERT(minor == 0);
+
+  /* Check if we are already initialized */
+
+  if (!g_adxl345config.handle)
+    {
+      ivdbg("Initializing\n");
+
+      /* Configure the ADXL345 interrupt pin as an input */
+
+      (void)kl_configgpio(GPIO_ADXL345_INT1);
+
+      /* Get an instance of the I2C interface */
+
+      dev = up_spiinitialize(CONFIG_ADXL345_SPIDEV);
+      if (!dev)
+        {
+          idbg("Failed to initialize SPI bus %d\n", CONFIG_ADXL345_SPIDEV);
+          return -ENODEV;
+        }
+
+      /* Instantiate the ADXL345 driver */
+
+      g_adxl345config.handle =
+        adxl345_instantiate(dev, (FAR struct adxl345_config_s *)&g_adxl345config);
+      if (!g_adxl345config.handle)
+        {
+          idbg("Failed to instantiate the ADXL345 driver\n");
+          return -ENODEV;
+        }
+
+      /* Initialize and register the ADXL345 driver */
+
+      ret = adxl345_register(g_adxl345config.handle, CONFIG_ADXL345_DEVMINOR);
+      if (ret < 0)
+        {
+          idbg("Failed to register STMPE driver: %d\n", ret);
+          return -ENODEV;
+        }
+    }
+
+  return OK;
+}
+
+#endif /* CONFIG_INPUT_ADXL345 */