From 4071e490e259de5bf2891c9893ab7965b5be3d2e Mon Sep 17 00:00:00 2001
From: Jan Dümpelmann <jan.duempelmann@inotec-licht.de>
Date: Thu, 3 Sep 2020 17:21:32 +0200
Subject: New function to modify fifo overwritability

---
 src/common/tusb_fifo.c | 19 +++++++++++++++++++
 src/common/tusb_fifo.h |  1 +
 2 files changed, 20 insertions(+)

(limited to 'src/common')

diff --git a/src/common/tusb_fifo.c b/src/common/tusb_fifo.c
index 6ab158cca..fdd8c3e35 100644
--- a/src/common/tusb_fifo.c
+++ b/src/common/tusb_fifo.c
@@ -319,3 +319,22 @@ bool tu_fifo_clear(tu_fifo_t *f)
 
   return true;
 }
+
+/******************************************************************************/
+/*!
+    @brief Change the fifo mode to overwritable or not overwritable
+
+    @param[in]  f
+                Pointer to the FIFO buffer to manipulate
+*/
+/******************************************************************************/
+bool tu_fifo_change_mode(tu_fifo_t *f, bool overwritable)
+{
+  tu_fifo_lock(f);
+
+  f->overwritable = overwritable;
+
+  tu_fifo_unlock(f);
+
+  return true;
+}
diff --git a/src/common/tusb_fifo.h b/src/common/tusb_fifo.h
index fb0c896f3..7957d83af 100644
--- a/src/common/tusb_fifo.h
+++ b/src/common/tusb_fifo.h
@@ -76,6 +76,7 @@ typedef struct
       .overwritable = _overwritable,         \
   }
 
+bool tu_fifo_change_mode(tu_fifo_t *f, bool overwritable);
 bool tu_fifo_clear(tu_fifo_t *f);
 bool tu_fifo_config(tu_fifo_t *f, void* buffer, uint16_t depth, uint16_t item_size, bool overwritable);
 
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