Add CC26xx CPU files

cpu/cc26xx/rtimer-arch.c

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
+ * 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 copyright holder 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 HOLDER 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.
+ */
+/*---------------------------------------------------------------------------*/
+/**
+ * \addtogroup cc26xx-rtimer
+ * @{
+ *
+ * \file
+ * Implementation of the arch-specific rtimer functions for the cc26xx
+ *
+ */
+/*---------------------------------------------------------------------------*/
+#include "contiki.h"
+#include "sys/energest.h"
+#include "sys/rtimer.h"
+#include "cpu.h"
+#include "dev/cc26xx-rtc.h"
+
+#include "ti-lib.h"
+
+#include <stdint.h>
+/*---------------------------------------------------------------------------*/
+/**
+ * \brief We don't need to do anything special here. The RTC is initialised
+ * elsewhere
+ */
+void
+rtimer_arch_init(void)
+{
+  return;
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * \brief Schedules an rtimer task to be triggered at time t
+ * \param t The time when the task will need executed.
+ *
+ * \e t is an absolute time, in other words the task will be executed AT
+ * time \e t, not IN \e t rtimer ticks.
+ *
+ * This function schedules a one-shot event with the AON RTC.
+ *
+ * This functions converts \e to a value suitable for the AON RTC.
+ */
+void
+rtimer_arch_schedule(rtimer_clock_t t)
+{
+  /* Convert the rtimer tick value to a value suitable for the AON RTC */
+  cc26xx_rtc_schedule_one_shot(t);
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * \brief Returns the current real-time clock time
+ * \return The current rtimer time in ticks
+ *
+ * The value is read from the AON RTC counter and converted to a number of
+ * rtimer ticks
+ *
+ */
+rtimer_clock_t
+rtimer_arch_now()
+{
+  return ti_lib_aon_rtc_current_compare_value_get();
+}
+/*---------------------------------------------------------------------------*/
+/** @} */