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Timing bugfix in the waiting period between channel samples to check if the coast is clear before sending a packet.

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This commit is contained in:
adamdunkels 2010-10-20 22:25:24 +00:00
parent 06123fefe2
commit 9cb830ed37
1 changed files with 4 additions and 3 deletions
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7
core/net/mac/contikimac.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: contikimac.c,v 1.38 2010/10/03 20:39:24 adamdunkels Exp $
* $Id: contikimac.c,v 1.39 2010/10/20 22:25:24 adamdunkels Exp $
*/
/**
@ -754,10 +754,11 @@ send_packet(mac_callback_t mac_callback, void *mac_callback_ptr)
break;
}
off();
t0 = RTIMER_NOW();
#if NURTIMER
while(RTIMER_CLOCK_LT(t0, RTIMER_NOW(), t0 + CCA_SLEEP_TIME + CCA_CHECK_TIME));
while(RTIMER_CLOCK_LT(t0, RTIMER_NOW(), t0 + CCA_SLEEP_TIME));
#else
while(RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + CCA_SLEEP_TIME + CCA_CHECK_TIME)) { }
while(RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + CCA_SLEEP_TIME)) { }
#endif
}
}