Add LED strip example

.. not yet working

platform/osd-merkur/dev/Suli.h

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+/*
+ * Copyright (c) 2015, Ralf Schlatterbeck Open Source Consulting
+ * All rights reserved.
+ *
+ * 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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.
+ *
+ * This file is part of the Contiki operating system.
+ */
+
+/**
+ * \defgroup Suli compatibility
+ *
+ * Seeed Unified Library Interface for Contiki OS
+ * See also https://github.com/Seeed-Studio/Suli
+ *
+ * Note: For now this only implements what we need to the LED_Strip example
+ * working. We're re-using existing Arduino wrappers where possible.
+ *
+ * @{
+ */
+
+/**
+ * \file
+ *        Header file for Seeed compatibility
+ * \author
+ *        Ralf Schlatterbeck <rsc@runtux.com>
+ */
+
+#include <Arduino.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define suli_delay_ms(ms) clock_delay_msec(ms)
+#define suli_delay_us(us) clock_delay_usec(us)
+
+/* These are used by Suli */
+typedef uint8_t  uint8;
+typedef uint16_t uint16;
+typedef uint32_t uint32;
+typedef int16_t  int16;
+typedef int32_t  int32;
+
+typedef int IO_T;    // IO type
+typedef int PIN_T;   // pin name
+typedef int DIR_T;   // pin direction
+
+/* From Arduino.h */
+#define HAL_PIN_INPUT  INPUT
+#define HAL_PIN_OUTPUT OUTPUT
+#define HAL_PIN_HIGH   HIGH
+#define HAL_PIN_LOW    LOW
+
+static inline void suli_pin_init (IO_T *pio, PIN_T pin)
+{
+    *pio = pin;
+}
+
+static inline void suli_pin_dir (IO_T *pio, DIR_T dir)
+{
+    pinMode (*pio, dir);
+}
+
+static inline void suli_pin_write (IO_T *pio, int16 state)
+{
+    digitalWrite (*pio, state);
+}
+
+static inline int16 suli_pin_read (IO_T *pio)
+{
+    return digitalRead (*pio);
+}
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+/*
+ * VI settings, see coding style
+ * ex:ts=8:et:sw=2
+ */
+
+/** @} */