1 files changed, 258 insertions, 0 deletions
diff --git a/nuttx/configs/teensy31/src/up_nsh.c b/nuttx/configs/teensy31/src/up_nsh.c
new file mode 100644
index 000000000..1e52c931e
--- /dev/null
+++ b/nuttx/configs/teensy31/src/up_nsh.c
@@ -0,0 +1,258 @@
+/****************************************************************************
+ * config/kwikstik-k40/src/up_nsh.c
+ * arch/arm/src/board/up_nsh.c
+ *
+ *   Copyright (C) 2011 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>
+
+#ifdef CONFIG_KINETIS_SDHC
+#  include <nuttx/sdio.h>
+#  include <nuttx/mmcsd.h>
+#endif
+
+#include "kinetis_internal.h"
+#include "kwikstik-internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+/* PORT and SLOT number probably depend on the board configuration */
+
+#ifdef CONFIG_ARCH_BOARD_KWIKSTIK_K40
+#  define NSH_HAVEUSBDEV 1
+#  define NSH_HAVEMMCSD  1
+#  if defined(CONFIG_NSH_MMCSDSLOTNO) && CONFIG_NSH_MMCSDSLOTNO != 0
+#    error "Only one MMC/SD slot, slot 0"
+#    undef CONFIG_NSH_MMCSDSLOTNO
+#  endif
+#  ifndef CONFIG_NSH_MMCSDSLOTNO
+#    define CONFIG_NSH_MMCSDSLOTNO 0
+#  endif
+#else
+   /* Add configuration for new Kinetis boards here */
+#  error "Unrecognized Kinetis board"
+#  undef NSH_HAVEUSBDEV
+#  undef NSH_HAVEMMCSD
+#endif
+
+/* Can't support USB features if USB is not enabled */
+
+#ifndef CONFIG_USBDEV
+#  undef NSH_HAVEUSBDEV
+#endif
+
+/* Can't support MMC/SD features if mountpoints are disabled or if SDHC support
+ * is not enabled.
+ */
+
+#if defined(CONFIG_DISABLE_MOUNTPOINT) || !defined(CONFIG_KINETIS_SDHC)
+#  undef NSH_HAVEMMCSD
+#endif
+
+#ifndef CONFIG_NSH_MMCSDMINOR
+#  define CONFIG_NSH_MMCSDMINOR 0
+#endif
+
+/* We expect to receive GPIO interrupts for card insertion events */
+
+#ifndef CONFIG_GPIO_IRQ
+#  error "CONFIG_GPIO_IRQ required for card detect interrupt"
+#endif
+
+#ifndef CONFIG_KINETIS_PORTEINTS
+#  error "CONFIG_KINETIS_PORTEINTS required for card detect interrupt"
+#endif
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(...) lowsyslog(__VA_ARGS__)
+#  else
+#    define message(...) printf(__VA_ARGS__)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message lowsyslog
+#  else
+#    define message printf
+#  endif
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/* This structure encapsulates the global variable used in this file and
+ * reduces the probability of name collistions.
+ */
+
+#ifdef NSH_HAVEMMCSD
+struct kinetis_nsh_s
+{
+  FAR struct sdio_dev_s *sdhc; /* SDIO driver handle */
+  bool inserted;               /* True: card is inserted */
+};
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#ifdef NSH_HAVEMMCSD
+static struct kinetis_nsh_s g_nsh;
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: kinetis_mediachange
+ ****************************************************************************/
+
+#ifdef NSH_HAVEMMCSD
+static void kinetis_mediachange(void)
+{
+  bool inserted;
+
+  /* Get the current value of the card detect pin.  This pin is pulled up on
+   * board.  So low means that a card is present.
+   */
+
+  inserted = !kinetis_gpioread(GPIO_SD_CARDDETECT);
+
+  /* Has the pin changed state? */
+
+  if (inserted != g_nsh.inserted)
+    {
+      /* Yes.. perform the appropriate action (this might need some debounce). */
+
+      g_nsh.inserted = inserted;
+      sdhc_mediachange(g_nsh.sdhc, inserted);
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: kinetis_cdinterrupt
+ ****************************************************************************/
+
+#ifdef NSH_HAVEMMCSD
+static int kinetis_cdinterrupt(int irq, FAR void *context)
+{
+  /* All of the work is done by kinetis_mediachange() */
+
+  kinetis_mediachange();
+  return OK;
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+#ifdef NSH_HAVEMMCSD
+  int ret;
+
+  /* Configure GPIO pins.
+   *
+   * First CD power.  The initial state will provide SD power.
+   */
+
+  kinetis_pinconfig(GPIO_SD_CARDON);      /* Applies power to the card */
+
+  /* Attached the card detect interrupt (but don't enable it yet) */
+
+  kinetis_pinconfig(GPIO_SD_CARDDETECT);
+  kinetis_pinirqattach(GPIO_SD_CARDDETECT, kinetis_cdinterrupt);
+
+  /* Mount the SDHC-based MMC/SD block driver */
+  /* First, get an instance of the SDHC interface */
+
+  message("nsh_archinitialize: Initializing SDHC slot %d\n",
+          CONFIG_NSH_MMCSDSLOTNO);
+
+  g_nsh.sdhc = sdhc_initialize(CONFIG_NSH_MMCSDSLOTNO);
+  if (!g_nsh.sdhc)
+    {
+      message("nsh_archinitialize: Failed to initialize SDHC slot %d\n",
+              CONFIG_NSH_MMCSDSLOTNO);
+      return -ENODEV;
+    }
+
+  /* Now bind the SDHC interface to the MMC/SD driver */
+
+  message("nsh_archinitialize: Bind SDHC to the MMC/SD driver, minor=%d\n",
+          CONFIG_NSH_MMCSDMINOR);
+
+  ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, g_nsh.sdhc);
+  if (ret != OK)
+    {
+      message("nsh_archinitialize: Failed to bind SDHC to the MMC/SD driver: %d\n", ret);
+      return ret;
+    }
+  message("nsh_archinitialize: Successfully bound SDHC to the MMC/SD driver\n");
+
+  /* Handle the initial card state */
+
+  kinetis_mediachange();
+
+  /* Enable CD interrupts to handle subsequent media changes */
+
+  kinetis_pinirqenable(GPIO_SD_CARDDETECT);
+#endif
+  return OK;
+}