133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
/*
|
|
* 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-rtc
|
|
* @{
|
|
*
|
|
*/
|
|
/**
|
|
* \file
|
|
* Implementation of the CC26xx AON RTC driver
|
|
*/
|
|
#include "contiki.h"
|
|
#include "sys/energest.h"
|
|
#include "rtimer.h"
|
|
#include "lpm.h"
|
|
|
|
#include "ti-lib.h"
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
#define cc26xx_rtc_isr(...) AONRTCIntHandler(__VA_ARGS__)
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Prototype of a function in clock.c. Called every time the handler fires */
|
|
void clock_update(void);
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
cc26xx_rtc_init(void)
|
|
{
|
|
uint32_t compare_value;
|
|
bool interrupts_disabled;
|
|
|
|
/* Disable and clear interrupts */
|
|
interrupts_disabled = ti_lib_int_master_disable();
|
|
|
|
ti_lib_aon_rtc_disable();
|
|
|
|
ti_lib_aon_rtc_event_clear(AON_RTC_CH0);
|
|
ti_lib_aon_rtc_event_clear(AON_RTC_CH2);
|
|
|
|
/* Setup the wakeup event */
|
|
ti_lib_aon_event_mcu_wake_up_set(AON_EVENT_MCU_WU0, AON_EVENT_RTC0);
|
|
ti_lib_aon_event_mcu_wake_up_set(AON_EVENT_MCU_WU1, AON_EVENT_RTC2);
|
|
ti_lib_aon_rtc_combined_event_config(AON_RTC_CH0 | AON_RTC_CH2);
|
|
|
|
/* Configure channel 2 in continuous compare, 128 ticks / sec */
|
|
ti_lib_aon_rtc_inc_value_ch2_set(RTIMER_SECOND / CLOCK_SECOND);
|
|
ti_lib_aon_rtc_mode_ch2_set(AON_RTC_MODE_CH2_CONTINUOUS);
|
|
compare_value = (RTIMER_SECOND / CLOCK_SECOND) +
|
|
ti_lib_aon_rtc_current_compare_value_get();
|
|
ti_lib_aon_rtc_compare_value_set(AON_RTC_CH2, compare_value);
|
|
|
|
/* Enable channel 2 and the RTC */
|
|
ti_lib_aon_rtc_channel_enable(AON_RTC_CH2);
|
|
ti_lib_aon_rtc_enable();
|
|
|
|
ti_lib_int_enable(INT_AON_RTC);
|
|
|
|
/* Re-enable interrupts */
|
|
if(!interrupts_disabled) {
|
|
ti_lib_int_master_enable();
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
rtimer_clock_t
|
|
cc26xx_rtc_get_next_trigger()
|
|
{
|
|
rtimer_clock_t ch2 = ti_lib_aon_rtc_compare_value_get(AON_RTC_CH2);
|
|
|
|
if(HWREG(AON_RTC_BASE + AON_RTC_O_CHCTL) & AON_RTC_CHCTL_CH0_EN) {
|
|
rtimer_clock_t ch0 = ti_lib_aon_rtc_compare_value_get(AON_RTC_CH2);
|
|
|
|
return RTIMER_CLOCK_LT(ch0, ch2) ? ch0 : ch2;
|
|
}
|
|
|
|
return ch2;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
cc26xx_rtc_schedule_one_shot(uint32_t ticks)
|
|
{
|
|
/* Set the channel to fire a one-shot compare event at time==ticks */
|
|
ti_lib_aon_rtc_compare_value_set(AON_RTC_CH0, ticks);
|
|
ti_lib_aon_rtc_channel_enable(AON_RTC_CH0);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/* The AON RTC interrupt handler */
|
|
void
|
|
cc26xx_rtc_isr(void)
|
|
{
|
|
ENERGEST_ON(ENERGEST_TYPE_IRQ);
|
|
|
|
if(ti_lib_aon_rtc_event_get(AON_RTC_CH0)) {
|
|
ti_lib_aon_rtc_event_clear(AON_RTC_CH0);
|
|
rtimer_run_next();
|
|
}
|
|
|
|
if(ti_lib_aon_rtc_event_get(AON_RTC_CH2)) {
|
|
ti_lib_aon_rtc_event_clear(AON_RTC_CH2);
|
|
clock_update();
|
|
}
|
|
|
|
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @} */
|