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31 * This file implements the OpenThread platform abstraction for the alarm.
39 #include "openthread-system.h"
40 #include <openthread/config.h>
41 #include <openthread/platform/alarm-milli.h>
42 #include <openthread/platform/diag.h>
43 #include "common/logging.hpp"
45 #include "platform-efr32.h"
46 #include "utils/code_utils.h"
50 #include "sl_sleeptimer.h"
52 #define XTAL_ACCURACY 200
54 static sl_sleeptimer_timer_handle_t sl_handle;
55 static uint32_t sAlarm = 0;
56 static bool sIsRunning = false;
58 static void AlarmCallback(sl_sleeptimer_timer_handle_t *aHandle, void *aData)
60 otSysEventSignalPending();
63 void efr32AlarmInit(void)
65 memset(&sl_handle, 0, sizeof sl_handle);
68 uint32_t otPlatAlarmMilliGetNow(void)
74 ticks = sl_sleeptimer_get_tick_count64();
75 status = sl_sleeptimer_tick64_to_ms(ticks, &now);
76 assert(status == SL_STATUS_OK);
80 uint32_t otPlatTimeGetXtalAccuracy(void)
85 void otPlatAlarmMilliStartAt(otInstance *aInstance, uint32_t aT0, uint32_t aDt)
87 OT_UNUSED_VARIABLE(aInstance);
92 sl_sleeptimer_stop_timer(&sl_handle);
95 remaining = (int32_t)(sAlarm - otPlatAlarmMilliGetNow());
100 otSysEventSignalPending();
104 status = sl_sleeptimer_ms32_to_tick(remaining, &ticks);
105 assert(status == SL_STATUS_OK);
107 status = sl_sleeptimer_start_timer(&sl_handle, ticks, AlarmCallback, NULL, 0,
108 SL_SLEEPTIMER_NO_HIGH_PRECISION_HF_CLOCKS_REQUIRED_FLAG);
109 assert(status == SL_STATUS_OK);
113 void otPlatAlarmMilliStop(otInstance *aInstance)
115 OT_UNUSED_VARIABLE(aInstance);
117 sl_sleeptimer_stop_timer(&sl_handle);
121 void efr32AlarmProcess(otInstance *aInstance)
127 remaining = (int32_t)(sAlarm - otPlatAlarmMilliGetNow());
133 #if OPENTHREAD_CONFIG_DIAG_ENABLE
134 if (otPlatDiagModeGet())
136 otPlatDiagAlarmFired(aInstance);
141 otPlatAlarmMilliFired(aInstance);