1 files changed, 141 insertions, 0 deletions
diff --git a/nuttx/configs/sam4l-xplained/src/sam_userleds.c b/nuttx/configs/sam4l-xplained/src/sam_userleds.c
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index 000000000..bf77e2c7f
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+++ b/nuttx/configs/sam4l-xplained/src/sam_userleds.c
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+/****************************************************************************
+ * configs/sam4l-xplained/src/sam_userleds.c
+ *
+ *   Copyright (C) 2013 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.
+ *
+ ****************************************************************************/
+/* There are three LEDs on board the SAM4L Xplained Pro board:  The EDBG
+ * controls two of the LEDs, a power LED and a status LED.  There is only
+ * one user controllable LED, a yellow LED labeled LED0 near the SAM4L USB
+ * connector.
+ *
+ * This LED is controlled by PC07 and LED0 can be activated by driving the
+ * PC07 to GND.
+ *
+ * When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
+ * control LED0.  Otherwise, LED0 can be controlled from logic in this file.
+ */
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "sam_gpio.h"
+#include "sam4l-xplained.h"
+
+#ifndef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
+ * with CONFIG_DEBUG_VERBOSE too)
+ */
+
+#ifdef CONFIG_DEBUG_LEDS
+#  define leddbg  lldbg
+#  define ledvdbg llvdbg
+#else
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: sam_ledinit
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the sam_ledinit() is
+ *   available to initialize the LED0 from user application logic.
+ *
+ ****************************************************************************/
+
+void sam_ledinit(void)
+{
+  (void)sam_configgpio(GPIO_LED0);
+}
+
+/****************************************************************************
+ * Name: sam_setled
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *  LEDs.  If CONFIG_ARCH_LEDS is not defined, then the sam_setled() is
+ *  available to control the LED0 from user application logic.
+ *
+ *****************************************************************************/
+
+void sam_setled(int led, bool ledon)
+{
+  if (led == BOARD_LED0)
+    {
+      sam_gpiowrite(GPIO_LED0, !ledon);
+    }
+}
+
+/****************************************************************************
+ * Name: sam_setled
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *  LEDs.  If CONFIG_ARCH_LEDS is not defined, then the sam_setleds() is
+ *  available to control the LED0 from user application logic.  NOTE:  since
+ *  there is only a single LED on-board, this is function is not very useful.
+ *
+ *****************************************************************************/
+
+void sam_setleds(uint8_t ledset)
+{
+  sam_setled(BOARD_LED0, (ledset & BOARD_LED0_BIT) != 0);
+}
+
+#endif /* !CONFIG_ARCH_LEDS */