| /* |
| * Copyright (c) 2017, 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 |
| * This file implements the OpenThread platform abstraction for the alarm. |
| * |
| */ |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| #include <openthread/config.h> |
| #include <openthread/platform/alarm.h> |
| #include <openthread/platform/diag.h> |
| #include <openthread/platform/platform.h> |
| |
| #include "utils/code_utils.h" |
| |
| #include "rail.h" |
| |
| static uint32_t sTimerHi = 0; |
| static uint32_t sTimerLo = 0; |
| static uint32_t sAlarmT0 = 0; |
| static uint32_t sAlarmDt = 0; |
| static bool sIsRunning = false; |
| |
| void efr32AlarmInit(void) |
| { |
| } |
| |
| uint32_t otPlatAlarmGetNow(void) |
| { |
| uint32_t timer_lo; |
| |
| timer_lo = RAIL_GetTime(); |
| |
| if (timer_lo < sTimerLo) |
| { |
| sTimerHi++; |
| } |
| |
| sTimerLo = timer_lo; |
| |
| return (((uint64_t)sTimerHi << 32) | sTimerLo) / 1000; |
| } |
| |
| void otPlatAlarmStartAt(otInstance *aInstance, uint32_t t0, uint32_t dt) |
| { |
| (void)aInstance; |
| sAlarmT0 = t0; |
| sAlarmDt = dt; |
| sIsRunning = true; |
| } |
| |
| void otPlatAlarmStop(otInstance *aInstance) |
| { |
| (void)aInstance; |
| sIsRunning = false; |
| } |
| |
| void efr32AlarmProcess(otInstance *aInstance) |
| { |
| uint32_t now = otPlatAlarmGetNow(); |
| uint32_t expires; |
| bool fire = false; |
| |
| otEXPECT(sIsRunning); |
| |
| expires = sAlarmT0 + sAlarmDt; |
| |
| if (sAlarmT0 <= now) |
| { |
| fire = (expires >= sAlarmT0 && expires <= now); |
| } |
| else |
| { |
| fire = (expires >= sAlarmT0 || expires <= now); |
| } |
| |
| if (fire) |
| { |
| sIsRunning = false; |
| |
| #if OPENTHREAD_ENABLE_DIAG |
| |
| if (otPlatDiagModeGet()) |
| { |
| otPlatDiagAlarmFired(aInstance); |
| } |
| else |
| #endif |
| { |
| otPlatAlarmFired(aInstance); |
| } |
| } |
| |
| exit: |
| return; |
| } |
| |
| void RAILCb_TimerExpired(void) |
| { |
| } |