From a712443a509bfd4665f8e606ea057c48a8474efb Mon Sep 17 00:00:00 2001
From: _VIFEXTech <1290176185@qq.com>
Date: Fri, 26 Nov 2021 19:36:00 +0800
Subject: [PATCH] feat(refr): add reset function for FPS statistics (#2832)

* fix(Kconfig) remove duplicate LV_BUILD_EXAMPLES configuration

* feat(refr) add reset of FPS statistics

Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
---
 src/core/lv_refr.c | 9 +++++++++
 src/core/lv_refr.h | 7 ++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/core/lv_refr.c b/src/core/lv_refr.c
index 1ebf43aa3c..6268249e58 100644
--- a/src/core/lv_refr.c
+++ b/src/core/lv_refr.c
@@ -321,8 +321,17 @@ void _lv_disp_refr_timer(lv_timer_t * tmr)
 }
 
 #if LV_USE_PERF_MONITOR
+void lv_refr_reset_fps_counter(void)
+{
+    fps_sum_all = 0;
+    fps_sum_cnt = 0;
+}
+
 uint32_t lv_refr_get_fps_avg(void)
 {
+    if(fps_sum_cnt == 0)
+        return 0;
+
     return fps_sum_all / fps_sum_cnt;
 }
 #endif
diff --git a/src/core/lv_refr.h b/src/core/lv_refr.h
index 4ac3c2cf54..873612cc71 100644
--- a/src/core/lv_refr.h
+++ b/src/core/lv_refr.h
@@ -80,7 +80,12 @@ void _lv_refr_set_disp_refreshing(lv_disp_t * disp);
 
 #if LV_USE_PERF_MONITOR
 /**
- * Get the average FPS since start up
+ * Reset FPS counter
+ */
+void lv_refr_reset_fps_counter(void);
+
+/**
+ * Get the average FPS
  * @return the average FPS
  */
 uint32_t lv_refr_get_fps_avg(void);