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!269 bug fix: write_index bug in rt_ringbuffer_put_force 

Merge pull request !269 from arminker/dev-fixbug
This commit is contained in:
bernard 2021-07-30 03:57:43 +00:00 committed by Gitee
parent 55f7d651c5 2439232c8a
commit 08bcc566b7
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;
}