Add board support for the FreeScale Kinetis TWR-K60N512

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3884 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 168 insertions, 0 deletions

diff --git a/nuttx/configs/twr-k60n512/src/up_buttons.c b/nuttx/configs/twr-k60n512/src/up_buttons.c
new file mode 100644
index 000000000..c5f320923
--- /dev/null
+++ b/nuttx/configs/twr-k60n512/src/up_buttons.c
@@ -0,0 +1,168 @@
+/****************************************************************************
+ * configs/twr-k60n512/src/up_buttons.c
+ *
+ *   Copyright (C) 2011 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 <arch/board/board.h>
+#include "twrk60-internal.h"
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+/* The TWR-K60N512 has user buttons (plus a reset button):
+ *
+ * 1. SW1 (IRQ0)   PTA19
+ * 2. SW2 (IRQ1)   PTE26
+ */
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_buttoninit
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After
+ *   that, up_buttons() may be called to collect the current state of all
+ *   buttons or up_irqbutton() may be called to register button interrupt
+ *   handlers.
+ *
+ ****************************************************************************/
+
+void up_buttoninit(void)
+{
+   /* Configure the two buttons as inputs */
+
+   kinetis_pinconfig(GPIO_SW1);
+   kinetis_pinconfig(GPIO_SW2);
+}
+
+/****************************************************************************
+ * Name: up_buttons
+ ****************************************************************************/
+
+uint8_t up_buttons(void)
+{
+  uint8_t ret = 0;
+
+  if (kinetis_gpioread(GPIO_SW1))
+    {
+      ret |= BUTTON_SW1_BIT;
+    }
+
+  if (kinetis_gpioread(GPIO_SW2))
+    {
+      ret |= BUTTON_SW2_BIT;
+    }
+
+  return ret
+}
+
+/************************************************************************************
+ * Button support.
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After
+ *   that, up_buttons() may be called to collect the current state of all
+ *   buttons or up_irqbutton() may be called to register button interrupt
+ *   handlers.
+ *
+ *   After up_buttoninit() has been called, up_buttons() may be called to
+ *   collect the state of all buttons.  up_buttons() returns an 8-bit bit set
+ *   with each bit associated with a button.  See the BUTTON_*_BIT and JOYSTICK_*_BIT
+ *   definitions in board.h for the meaning of each bit.
+ *
+ *   up_irqbutton() may be called to register an interrupt handler that will
+ *   be called when a button is depressed or released.  The ID value is a
+ *   button enumeration value that uniquely identifies a button resource. See the
+ *   BUTTON_* and JOYSTICK_* definitions in board.h for the meaning of enumeration
+ *   value.  The previous interrupt handler address is returned (so that it may
+ *   restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+xcpt_t up_irqbutton(int id, xcpt_t irqhandler)
+{
+  xcpt_t oldhandler = NULL;
+  uint32_t pinset;
+
+  /* Map the button id to the GPIO bit set. */
+
+  if (id == BUTTON_SW1)
+    {
+      pinset = GPIO_SW1;
+    }
+  else if (id == BUTTON_SW2)
+    {
+      pinset = GPIO_SW2;
+    }
+  else
+    {
+      return NULL;
+    }
+
+  /* The button has already been configured as an interrupting input (by
+   * up_buttoninit() above).
+   *
+   * Attach the new button handler.
+   */
+
+  oldhandler = knetis_pinirqattach(pinset, irqhandler);
+
+  /* Then make sure that interupts are enabled on the pin */
+
+  kinetis_pindmaenable(pinset);
+  return oldhandler;
+}
+#endif
+#endif /* CONFIG_ARCH_BUTTONS */