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bugfix:write_index bug in rt_ringbuffer_put_force

This commit is contained in:
arminker 2021-07-20 15:47:03 +08:00
parent 55f7d651c5
commit 2439232c8a
1 changed files with 3 additions and 1 deletions
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4
components/drivers/src/ringbuffer.c
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@ -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;
}