diff options
| author | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2016-10-29 13:38:02 +0300 |
|---|---|---|
| committer | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2016-10-29 13:38:02 +0300 |
| commit | 99ed0f25cb1dded94d0774ee3bdb3c08062df51a (patch) | |
| tree | c92f6edef0ad79692c07a9d9bd6f2127f666aed5 /unix/mphalport.h | |
| parent | 6ed5583f8cfa5aa0afb776654cd996abaaa5fba3 (diff) | |
| download | micropython-99ed0f25cb1dded94d0774ee3bdb3c08062df51a.tar.gz micropython-99ed0f25cb1dded94d0774ee3bdb3c08062df51a.zip | |
unix/mphalport.h: Add warning of mp_hal_delay_ms() implementation.
It's implemented in terms of usleep(), and POSIX doesn't guarantee that
usleep() can sleep for more than a second. This restriction unlikely
applies to any real-world system, but...
Diffstat (limited to 'unix/mphalport.h')
| -rw-r--r-- | unix/mphalport.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/unix/mphalport.h b/unix/mphalport.h index e440eafd4e..9e232c5609 100644 --- a/unix/mphalport.h +++ b/unix/mphalport.h @@ -34,6 +34,8 @@ void mp_hal_set_interrupt_char(char c); void mp_hal_stdio_mode_raw(void); void mp_hal_stdio_mode_orig(void); +// TODO: POSIX et al. define usleep() as guaranteedly capable only of 1s sleep: +// "The useconds argument shall be less than one million." static inline void mp_hal_delay_ms(mp_uint_t ms) { usleep((ms) * 1000); } static inline void mp_hal_delay_us(mp_uint_t us) { usleep(us); } |