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Make ContikiMAC more configurable

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Allow the project / platform to provide values for CCA_SLEEP_TIME and LISTEN_TIME_AFTER_PACKET_DETECTED.

This is useful for sub-ghz operation.

This has been shamelessly stolen from the [Mountain Sensing project](https://github.com/feshie/contiki)

@heliosfa @kmartinez
This commit is contained in:
George Oikonomou 2015-07-09 02:51:38 +01:00
parent ca50a2c6df
commit 503a992887
1 changed files with 9 additions and 1 deletions
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10
core/net/mac/contikimac/contikimac.c
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@ -136,11 +136,15 @@ static int we_are_receiving_burst = 0;
/* CCA_SLEEP_TIME is the time between two successive CCA checks. */
/* Add 1 when rtimer ticks are coarse */
#ifdef CONTIKIMAC_CONF_CCA_SLEEP_TIME
#define CCA_SLEEP_TIME CONTIKIMAC_CONF_CCA_SLEEP_TIME
#else
#if RTIMER_ARCH_SECOND > 8000
#define CCA_SLEEP_TIME RTIMER_ARCH_SECOND / 2000
#else
#define CCA_SLEEP_TIME (RTIMER_ARCH_SECOND / 2000) + 1
#endif
#endif /* RTIMER_ARCH_SECOND > 8000 */
#endif /* CONTIKIMAC_CONF_CCA_SLEEP_TIME */
/* CHECK_TIME is the total time it takes to perform CCA_COUNT_MAX
CCAs. */
@ -153,7 +157,11 @@ static int we_are_receiving_burst = 0;
/* LISTEN_TIME_AFTER_PACKET_DETECTED is the time that we keep checking
for activity after a potential packet has been detected by a CCA
check. */
#ifdef CONTIKIMAC_CONF_LISTEN_TIME_AFTER_PACKET_DETECTED
#define LISTEN_TIME_AFTER_PACKET_DETECTED CONTIKIMAC_CONF_LISTEN_TIME_AFTER_PACKET_DETECTED
#else
#define LISTEN_TIME_AFTER_PACKET_DETECTED RTIMER_ARCH_SECOND / 80
#endif
/* MAX_SILENCE_PERIODS is the maximum amount of periods (a period is
CCA_CHECK_TIME + CCA_SLEEP_TIME) that we allow to be silent before