| /* |
| * 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 miscellaneous behaviors. |
| */ |
| |
| #include <openthread/types.h> |
| #include <openthread/platform/misc.h> |
| |
| #include "platform-efr32.h" |
| #include "em_rmu.h" |
| |
| static uint32_t sResetCause; |
| |
| void efr32MiscInit(void) |
| { |
| // Read the cause of last reset. |
| sResetCause = RMU_ResetCauseGet(); |
| |
| // Clear the register, as the causes cumulate over resets. |
| RMU_ResetCauseClear(); |
| } |
| |
| void otPlatReset(otInstance *aInstance) |
| { |
| (void)aInstance; |
| NVIC_SystemReset(); |
| } |
| |
| otPlatResetReason otPlatGetResetReason(otInstance *aInstance) |
| { |
| (void)aInstance; |
| otPlatResetReason reason; |
| |
| if (sResetCause & RMU_RSTCAUSE_PORST) |
| { |
| reason = OT_PLAT_RESET_REASON_POWER_ON; |
| } |
| else if (sResetCause & RMU_RSTCAUSE_SYSREQRST) |
| { |
| reason = OT_PLAT_RESET_REASON_SOFTWARE; |
| } |
| else if (sResetCause & RMU_RSTCAUSE_WDOGRST) |
| { |
| reason = OT_PLAT_RESET_REASON_WATCHDOG; |
| } |
| else if (sResetCause & RMU_RSTCAUSE_EXTRST) |
| { |
| reason = OT_PLAT_RESET_REASON_EXTERNAL; |
| } |
| else if (sResetCause & RMU_RSTCAUSE_LOCKUPRST) |
| { |
| reason = OT_PLAT_RESET_REASON_FAULT; |
| } |
| else if ((sResetCause & RMU_RSTCAUSE_AVDDBOD) || |
| (sResetCause & RMU_RSTCAUSE_DECBOD) || |
| (sResetCause & RMU_RSTCAUSE_DVDDBOD) || |
| (sResetCause & RMU_RSTCAUSE_EM4RST)) |
| { |
| reason = OT_PLAT_RESET_REASON_ASSERT; |
| } |
| else |
| { |
| reason = OT_PLAT_RESET_REASON_UNKNOWN; |
| } |
| |
| return reason; |
| } |
| |
| void otPlatWakeHost(void) |
| { |
| // TODO: implement an operation to wake the host from sleep state. |
| } |