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The radio driver now takes care of adjusting for the transmission time

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This commit is contained in:
adamdunkels 2008-01-08 07:54:16 +00:00
parent 88a010acdc
commit 1640b11972
1 changed files with 16 additions and 5 deletions
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21
core/sys/timesynch.c
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@ -34,7 +34,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: timesynch.c,v 1.4 2007/12/23 14:57:11 oliverschmidt Exp $ * $Id: timesynch.c,v 1.5 2008/01/08 07:54:16 adamdunkels Exp $
*/ */
/** /**
@ -107,25 +107,36 @@ read_packet(void)
len = mac->read(); len = mac->read();
if(len == 0) {
return 0;
}
/* We check the authority level of the sender of the incoming /* We check the authority level of the sender of the incoming
packet. If the sending node has a lower authority level than we packet. If the sending node has a lower authority level than we
have, we synchronize to the time of the sending node and set our have, we synchronize to the time of the sending node and set our
own authority level to be one more than the sending node. */ own authority level to be one more than the sending node. */
if(simple_cc2420_authority_level_of_sender < authority_level) { if(simple_cc2420_authority_level_of_sender < authority_level) {
adjust_offset(simple_cc2420_time_of_departure +
simple_cc2420_time_for_transmission, adjust_offset(simple_cc2420_time_of_departure,
simple_cc2420_time_of_arrival); simple_cc2420_time_of_arrival);
if(simple_cc2420_authority_level_of_sender + 1 != authority_level) { if(simple_cc2420_authority_level_of_sender + 1 != authority_level) {
authority_level = simple_cc2420_authority_level_of_sender + 1; authority_level = simple_cc2420_authority_level_of_sender + 1;
} }
/* XXX the authority level should be increased over time except
for the sink node. */
} }
return len; return len;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
#if 0
static void
periodic_authority_increase(void *ptr)
{
/* XXX the authority level should be increased over time except
for the sink node (which has authority 0). */
}
#endif
/*---------------------------------------------------------------------------*/
static void static void
set_receive_function(void (* recv)(const struct mac_driver *)) set_receive_function(void (* recv)(const struct mac_driver *))
{ {