| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * 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. |
| */ |
| |
| /** |
| * @file alarm.c |
| * Platform abstraction for the alarm |
| */ |
| |
| #include <openthread/platform/alarm-milli.h> |
| |
| #include "platform-da15000.h" |
| |
| #include "hw_timer0.h" |
| |
| static bool sIsRunning = false; |
| static uint32_t sAlarm = 0; |
| static uint32_t sCounter; |
| volatile bool sAlarmFired = false; |
| |
| static void timer0_interrupt_cb(void) |
| { |
| sCounter++; |
| } |
| |
| void da15000AlarmProcess(otInstance *aInstance) |
| { |
| if ((sIsRunning) && (sAlarm <= sCounter)) |
| { |
| sIsRunning = false; |
| otPlatAlarmMilliFired(aInstance); |
| } |
| } |
| |
| void da15000AlarmInit(void) |
| { |
| hw_timer0_init(NULL); |
| hw_timer0_set_clock_source(HW_TIMER0_CLK_SRC_FAST); |
| hw_timer0_set_pwm_mode(HW_TIMER0_MODE_PWM); |
| hw_timer0_set_fast_clock_div(HW_TIMER0_FAST_CLK_DIV_4); |
| hw_timer0_set_t0_reload(0x07D0, 0x07D0); |
| hw_timer0_register_int(timer0_interrupt_cb); |
| hw_timer0_set_on_clock_div(false); |
| } |
| |
| uint32_t otPlatAlarmMilliGetNow(void) |
| { |
| return sCounter; |
| } |
| |
| void otPlatAlarmMilliStartAt(otInstance *aInstance, uint32_t t0, uint32_t dt) |
| { |
| (void)aInstance; |
| sAlarm = t0 + dt; |
| sIsRunning = true; |
| |
| if (sCounter == 0) |
| { |
| hw_timer0_enable(); |
| } |
| |
| hw_timer0_unfreeze(); |
| } |
| |
| void otPlatAlarmMilliStop(otInstance *aInstance) |
| { |
| (void)aInstance; |
| sIsRunning = false; |
| hw_timer0_freeze(); |
| } |