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Stack-friendly cc243x clock ISR enabled by default

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This new approach (CLOCK_CONF_ACCURATE=0) was not as inaccurate
as originally thought. In fact, it has pretty much the same
accuracy as the old, stack-hungry version.

* Renamed the define from CLOCK_CONF_ACCURATE (1: old) to
  CLOCK_CONF_STACK_FRIENDLY (1: new) to stop implying
  that one is more accurate than the other.
* Using CLOCK_CONF_STACK_FRIENDLY by default.
This commit is contained in:
George Oikonomou 2012-04-02 16:49:07 +01:00
parent 924fe934c1
commit ce17fa131c
3 changed files with 16 additions and 21 deletions
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17
cpu/cc2430/dev/clock.c
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@ -47,15 +47,12 @@
/* Used in sleep timer interrupt for calculating the next interrupt time */
static unsigned long timer_value;
/*starts calculating the ticks right after reset*/
#if CLOCK_CONF_ACCURATE
static volatile __data clock_time_t count = 0;
#else
volatile __data clock_time_t count = 0;
/* accurate clock is stack hungry */
#if CLOCK_CONF_STACK_FRIENDLY
volatile __bit sleep_flag;
#else
#endif
/*calculates seconds*/
static volatile __data clock_time_t count = 0; /* Uptime in ticks */
static volatile __data clock_time_t seconds = 0; /* Uptime in secs */
/*---------------------------------------------------------------------------*/
/**
@ -152,13 +149,13 @@ clock_ISR(void) __interrupt(ST_VECTOR)
++seconds;
}
#if CLOCK_CONF_ACCURATE
#if CLOCK_CONF_STACK_FRIENDLY
sleep_flag = 1;
#else
if(etimer_pending()
&& (etimer_next_expiration_time() - count - 1) > MAX_TICKS) {
etimer_request_poll();
}
#else
sleep_flag = 1;
#endif
IRCON_STIF = 0;