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timers.h: Return error codes instead of true/false for failures

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This commit is contained in:
Angus Gratton 2015-11-28 16:23:06 +11:00
parent 336bad573d
commit 2887896c76
2 changed files with 33 additions and 11 deletions
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35
core/esp_timer.c
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@ -78,7 +78,7 @@ uint32_t timer_time_to_count(const timer_frc_t frc, uint32_t us, const timer_clk
}
}
bool timer_set_frequency(const timer_frc_t frc, uint32_t freq)
int timer_set_frequency(const timer_frc_t frc, uint32_t freq)
{
uint32_t counts = 0;
timer_clkdiv_t div = timer_freq_to_div(freq);
@ -86,8 +86,7 @@ bool timer_set_frequency(const timer_frc_t frc, uint32_t freq)
counts = timer_freq_to_count(frc, freq, div);
if(counts == 0)
{
printf("ABORT: No counter for timer %u frequency %u\r\n", frc, freq);
abort();
return -EINVAL;
}
timer_set_divider(frc, div);
@ -101,17 +100,17 @@ bool timer_set_frequency(const timer_frc_t frc, uint32_t freq)
/* assume that if this overflows it'll wrap, so we'll get desired behaviour */
TIMER(1).ALARM = counts + TIMER(1).COUNT;
}
return true;
return 0;
}
bool timer_set_timeout(const timer_frc_t frc, uint32_t us)
int _timer_set_timeout_impl(const timer_frc_t frc, uint32_t us)
{
uint32_t counts = 0;
timer_clkdiv_t div = timer_time_to_div(us);
counts = timer_time_to_count(frc, us, div);
if(counts == 0)
return false; /* can't set frequency */
return -EINVAL; /* can't set frequency */
timer_set_divider(frc, div);
if(frc == FRC1)
@ -123,5 +122,27 @@ bool timer_set_timeout(const timer_frc_t frc, uint32_t us)
TIMER(1).ALARM = counts + TIMER(1).COUNT;
}
return true;
return 0;
}
int timer_set_timeout(const timer_frc_t frc, uint32_t us)
{
uint32_t counts = 0;
timer_clkdiv_t div = timer_time_to_div(us);
counts = timer_time_to_count(frc, us, div);
if(counts == 0)
return -EINVAL; /* can't set frequency */
timer_set_divider(frc, div);
if(frc == FRC1)
{
timer_set_load(frc, counts);
}
else /* FRC2 */
{
TIMER(1).ALARM = counts + TIMER(1).COUNT;
}
return 0;
}