diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/drivers/src/ringbuffer.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/components/drivers/src/ringbuffer.c b/components/drivers/src/ringbuffer.c index 29de20b087..f01a594609 100644 --- a/components/drivers/src/ringbuffer.c +++ b/components/drivers/src/ringbuffer.c @@ -8,6 +8,7 @@ * 2012-09-30 Bernard first version. * 2013-05-08 Grissiom reimplement * 2016-08-18 heyuanjie add interface + * 2021-07-20 arminker fix write_index bug in function rt_ringbuffer_put_force */ #include <rtthread.h> @@ -138,7 +139,8 @@ rt_size_t rt_ringbuffer_put_force(struct rt_ringbuffer *rb, if (length > space_length) { - rb->read_mirror = ~rb->read_mirror; + if (rb->write_index <= rb->read_index) + rb->read_mirror = ~rb->read_mirror; rb->read_index = rb->write_index; } |