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[update] usleep supports calling in interrupts.

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This commit is contained in:
guozhanxin 2021-06-15 18:29:58 +08:00
parent 8a274211f1
commit 66b7289ee7
1 changed files with 8 additions and 1 deletions
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9
components/libc/compilers/common/unistd.c
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@ -55,7 +55,14 @@ RTM_EXPORT(sleep);
int usleep(useconds_t usec) int usleep(useconds_t usec)
{ {
rt_thread_mdelay(usec / 1000u); if (rt_thread_self() != RT_NULL)
{
rt_thread_mdelay(usec / 1000u);
}
else
{
rt_hw_us_delay(usec / 1000u);
}
rt_hw_us_delay(usec % 1000u); rt_hw_us_delay(usec % 1000u);
return 0; return 0;
} }