CSMA for Cooja motes: increase backoff_period
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@ -154,9 +154,15 @@ neighbor_queue_from_addr(const linkaddr_t *addr)
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static clock_time_t
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backoff_period(void)
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{
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#if CONTIKI_TARGET_COOJA
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/* Increase normal value by 20 to compensate for the coarse-grained
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radio medium with Cooja motes */
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return MAX(20 * CLOCK_SECOND / 3125, 1);
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#else /* CONTIKI_TARGET_COOJA */
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/* Use the default in IEEE 802.15.4: aUnitBackoffPeriod which is
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* 20 symbols i.e. 320 usec. That is, 1/3125 second. */
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return MAX(CLOCK_SECOND / 3125, 1);
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#endif /* CONTIKI_TARGET_COOJA */
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}
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/*---------------------------------------------------------------------------*/
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static int
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