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| author | Keith Packard <keithp@keithp.com> | 2019-02-25 16:42:25 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2019-02-25 16:42:25 -0700 |
| commit | cd920a0e5321166ef8b1d6afc3d63fc5de998a93 (patch) | |
| tree | 91ac01e9748a5d9395b2d30fc0ed117584c9e95c /src/kernel/ao.h | |
| parent | 0448b9b638f8599633227a639ef9d8572780bbd9 (diff) | |
altos: add ao_time_ns API
This provides nano-second resolution times by reading the systick
value (which runs at 250ns ticks on stm).
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/kernel/ao.h')
| -rw-r--r-- | src/kernel/ao.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/kernel/ao.h b/src/kernel/ao.h index c00de1fe..dddcd9cb 100644 --- a/src/kernel/ao.h +++ b/src/kernel/ao.h @@ -117,6 +117,10 @@ extern volatile AO_TICK_TYPE ao_tick_count; AO_TICK_TYPE ao_time(void); +/* Returns the current time in ns */ +uint64_t +ao_time_ns(void); + /* Suspend the current task until ticks time has passed */ void ao_delay(uint16_t ticks); |