From 390c6352670b07e3b9d97882510e3371c4cfb576 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 28 Mar 2021 19:36:32 +0800
Subject: [PATCH 1/2] [stm32] remove 'count' variable in main()

---
 .../stm32f072-st-nucleo/applications/main.c   |  3 +--
 .../stm32f091-st-nucleo/applications/main.c   |  4 +---
 .../stm32f103-atk-nano/applications/main.c    |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f103-blue-pill/applications/main.c   |  3 +--
 .../stm32f103-dofly-M3S/applications/main.c   |  3 +--
 .../stm32f103-dofly-lyc8/applications/main.c  |  3 +--
 .../applications/main.c                       |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f103-hw100k-ibox/applications/main.c |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f103-yf-ufun/applications/main.c     |  3 +--
 .../stm32f107-uc-eval/applications/main.c     |  3 +--
 .../stm32f401-st-nucleo/applications/main.c   |  3 +--
 .../applications/main.c                       |  3 +--
 .../applications/main.c                       |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f410-st-nucleo/applications/main.c   |  3 +--
 .../stm32f411-atk-nano/applications/main.c    |  3 +--
 .../stm32f411-st-nucleo/applications/main.c   |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f412-st-nucleo/applications/main.c   |  3 +--
 .../stm32f413-st-nucleo/applications/main.c   |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f429-armfly-v6/applications/main.c   |  4 +---
 .../stm32f429-atk-apollo/applications/main.c  |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f429-st-disco/applications/main.c    |  3 +--
 .../stm32f446-st-nucleo/applications/main.c   |  3 +--
 .../stm32f469-st-disco/applications/main.c    |  3 +--
 .../stm32f746-st-disco/applications/main.c    |  3 +--
 .../stm32f767-atk-apollo/applications/main.c  |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32f767-st-nucleo/applications/main.c   |  3 +--
 .../stm32f769-st-disco/applications/main.c    |  3 +--
 .../stm32g070-st-nucleo/applications/main.c   |  3 +--
 .../stm32g071-st-nucleo/applications/main.c   |  3 +--
 .../stm32g431-st-nucleo/applications/main.c   |  3 +--
 .../stm32h743-atk-apollo/applications/main.c  |  3 +--
 .../stm32h743-st-nucleo/applications/main.c   |  3 +--
 .../applications/main.c                       |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32h750-artpi-h750/applications/main.c  |  3 +--
 .../stm32l010-st-nucleo/applications/main.c   |  3 +--
 .../stm32l053-st-nucleo/applications/main.c   |  3 +--
 .../stm32l412-st-nucleo/applications/main.c   |  3 +--
 .../stm32l431-BearPi/applications/main.c      | 24 +++++++++----------
 .../stm32l432-st-nucleo/applications/main.c   |  3 +--
 .../stm32l433-st-nucleo/applications/main.c   |  3 +--
 .../stm32l452-st-nucleo/applications/main.c   |  3 +--
 .../stm32l475-atk-pandora/applications/main.c |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32l476-st-nucleo/applications/main.c   |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32l496-st-nucleo/applications/main.c   |  3 +--
 .../stm32l4r5-st-nucleo/applications/main.c   |  4 +---
 .../stm32l4r9-st-eval/applications/main.c     |  3 +--
 .../applications/main.c                       |  3 +--
 .../stm32mp157a-st-ev1/applications/main.c    |  3 +--
 .../stm32wb55-st-nucleo/applications/main.c   |  3 +--
 .../stm32wl55-st-nucleo/applications/main.c   |  3 +--
 61 files changed, 71 insertions(+), 136 deletions(-)

diff --git a/bsp/stm32/stm32f072-st-nucleo/applications/main.c b/bsp/stm32/stm32f072-st-nucleo/applications/main.c
index 486ed61283..88489a380c 100644
--- a/bsp/stm32/stm32f072-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f072-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED2_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f091-st-nucleo/applications/main.c b/bsp/stm32/stm32f091-st-nucleo/applications/main.c
index 9783d01e55..6debd35f0b 100644
--- a/bsp/stm32/stm32f091-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f091-st-nucleo/applications/main.c
@@ -17,12 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
-
     /* set LED2 pin mode to output */
     rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED2_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-atk-nano/applications/main.c b/bsp/stm32/stm32f103-atk-nano/applications/main.c
index be493624c1..8b86d19f42 100644
--- a/bsp/stm32/stm32f103-atk-nano/applications/main.c
+++ b/bsp/stm32/stm32f103-atk-nano/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c b/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c
index 55c2b62023..21591b27c9 100644
--- a/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c
+++ b/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c
@@ -19,13 +19,12 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_pin_write(LED1_PIN, PIN_HIGH);
diff --git a/bsp/stm32/stm32f103-blue-pill/applications/main.c b/bsp/stm32/stm32f103-blue-pill/applications/main.c
index 9be4cd59b1..49c8857458 100644
--- a/bsp/stm32/stm32f103-blue-pill/applications/main.c
+++ b/bsp/stm32/stm32f103-blue-pill/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-dofly-M3S/applications/main.c b/bsp/stm32/stm32f103-dofly-M3S/applications/main.c
index 0ec4930664..bec9c16a1c 100644
--- a/bsp/stm32/stm32f103-dofly-M3S/applications/main.c
+++ b/bsp/stm32/stm32f103-dofly-M3S/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c b/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c
index dc4e9cbb7e..7d6ee4fd8d 100644
--- a/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c
+++ b/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c b/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c
index 7ddaa5ee96..2f87d8ba9c 100644
--- a/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c
+++ b/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c b/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c
index bf9e60aae9..a14486afca 100644
--- a/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c
+++ b/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED4_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED4_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c b/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c
index 096b4df406..9b5ca4b3a1 100644
--- a/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c
+++ b/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c b/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c
index be493624c1..8b86d19f42 100644
--- a/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c
+++ b/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f103-yf-ufun/applications/main.c b/bsp/stm32/stm32f103-yf-ufun/applications/main.c
index ffe4955e19..451ca36099 100644
--- a/bsp/stm32/stm32f103-yf-ufun/applications/main.c
+++ b/bsp/stm32/stm32f103-yf-ufun/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED3_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED3_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f107-uc-eval/applications/main.c b/bsp/stm32/stm32f107-uc-eval/applications/main.c
index 9dca242b10..5ff9118958 100644
--- a/bsp/stm32/stm32f107-uc-eval/applications/main.c
+++ b/bsp/stm32/stm32f107-uc-eval/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f401-st-nucleo/applications/main.c b/bsp/stm32/stm32f401-st-nucleo/applications/main.c
index 48009f1c78..c4fc239753 100644
--- a/bsp/stm32/stm32f401-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f401-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c b/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c
index 47358c8a61..5fdff391d9 100644
--- a/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f407-atk-explorer/applications/main.c b/bsp/stm32/stm32f407-atk-explorer/applications/main.c
index 2fc9307caf..897ea4e4c9 100644
--- a/bsp/stm32/stm32f407-atk-explorer/applications/main.c
+++ b/bsp/stm32/stm32f407-atk-explorer/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f407-st-discovery/applications/main.c b/bsp/stm32/stm32f407-st-discovery/applications/main.c
index 2651a75073..ecc3464e69 100644
--- a/bsp/stm32/stm32f407-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32f407-st-discovery/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f410-st-nucleo/applications/main.c b/bsp/stm32/stm32f410-st-nucleo/applications/main.c
index 05ab0e2504..796ed53fa1 100644
--- a/bsp/stm32/stm32f410-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f410-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f411-atk-nano/applications/main.c b/bsp/stm32/stm32f411-atk-nano/applications/main.c
index df457f4760..c37fd1cdec 100644
--- a/bsp/stm32/stm32f411-atk-nano/applications/main.c
+++ b/bsp/stm32/stm32f411-atk-nano/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f411-st-nucleo/applications/main.c b/bsp/stm32/stm32f411-st-nucleo/applications/main.c
index 0e109663ae..95b3c77b36 100644
--- a/bsp/stm32/stm32f411-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f411-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c b/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c
index be6a8af867..178bef6ba6 100644
--- a/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c
+++ b/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f412-st-nucleo/applications/main.c b/bsp/stm32/stm32f412-st-nucleo/applications/main.c
index 2cf35c5bc6..77417937d5 100644
--- a/bsp/stm32/stm32f412-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f412-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f413-st-nucleo/applications/main.c b/bsp/stm32/stm32f413-st-nucleo/applications/main.c
index 799dc6797d..442502550c 100644
--- a/bsp/stm32/stm32f413-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f413-st-nucleo/applications/main.c
@@ -23,11 +23,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f427-robomaster-a/applications/main.c b/bsp/stm32/stm32f427-robomaster-a/applications/main.c
index 6cef3cbb34..1e82d7634e 100644
--- a/bsp/stm32/stm32f427-robomaster-a/applications/main.c
+++ b/bsp/stm32/stm32f427-robomaster-a/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f429-armfly-v6/applications/main.c b/bsp/stm32/stm32f429-armfly-v6/applications/main.c
index 21b7c14ec0..d964d95335 100644
--- a/bsp/stm32/stm32f429-armfly-v6/applications/main.c
+++ b/bsp/stm32/stm32f429-armfly-v6/applications/main.c
@@ -15,14 +15,12 @@
 
 int main(void)
 {
-    int count = 1;
-
     HC574_SetPin(LED1,0);
     HC574_SetPin(LED2,0);
     HC574_SetPin(LED3,0);
     HC574_SetPin(LED4,0);
 
-    while (count++)
+    while (1)
     {
         HC574_SetPin(LED1,1);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f429-atk-apollo/applications/main.c b/bsp/stm32/stm32f429-atk-apollo/applications/main.c
index 6d19a46edb..3a41980f00 100644
--- a/bsp/stm32/stm32f429-atk-apollo/applications/main.c
+++ b/bsp/stm32/stm32f429-atk-apollo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f429-fire-challenger/applications/main.c b/bsp/stm32/stm32f429-fire-challenger/applications/main.c
index 64e40b75c8..457ec11f24 100644
--- a/bsp/stm32/stm32f429-fire-challenger/applications/main.c
+++ b/bsp/stm32/stm32f429-fire-challenger/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f429-st-disco/applications/main.c b/bsp/stm32/stm32f429-st-disco/applications/main.c
index 992f2b5d74..f28b0c70cb 100644
--- a/bsp/stm32/stm32f429-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f429-st-disco/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f446-st-nucleo/applications/main.c b/bsp/stm32/stm32f446-st-nucleo/applications/main.c
index 897c6eec1c..cad622b154 100644
--- a/bsp/stm32/stm32f446-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f446-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED2 pin mode to output */
     rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED2_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f469-st-disco/applications/main.c b/bsp/stm32/stm32f469-st-disco/applications/main.c
index 759572d376..03fc02fffc 100644
--- a/bsp/stm32/stm32f469-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f469-st-disco/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f746-st-disco/applications/main.c b/bsp/stm32/stm32f746-st-disco/applications/main.c
index 0024ce1c0a..11497a85c3 100644
--- a/bsp/stm32/stm32f746-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f746-st-disco/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f767-atk-apollo/applications/main.c b/bsp/stm32/stm32f767-atk-apollo/applications/main.c
index 71e6132ea2..7a7438d1b6 100644
--- a/bsp/stm32/stm32f767-atk-apollo/applications/main.c
+++ b/bsp/stm32/stm32f767-atk-apollo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f767-fire-challenger/applications/main.c b/bsp/stm32/stm32f767-fire-challenger/applications/main.c
index 4cf67f2e9e..524c000ac5 100644
--- a/bsp/stm32/stm32f767-fire-challenger/applications/main.c
+++ b/bsp/stm32/stm32f767-fire-challenger/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f767-st-nucleo/applications/main.c b/bsp/stm32/stm32f767-st-nucleo/applications/main.c
index a0967c1326..e7ae8dd7ed 100644
--- a/bsp/stm32/stm32f767-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f767-st-nucleo/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32f769-st-disco/applications/main.c b/bsp/stm32/stm32f769-st-disco/applications/main.c
index d61afe14c3..17a86ceb17 100644
--- a/bsp/stm32/stm32f769-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f769-st-disco/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32g070-st-nucleo/applications/main.c b/bsp/stm32/stm32g070-st-nucleo/applications/main.c
index 5f22fcae65..b205d8c186 100644
--- a/bsp/stm32/stm32g070-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32g070-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32g071-st-nucleo/applications/main.c b/bsp/stm32/stm32g071-st-nucleo/applications/main.c
index 5f22fcae65..b205d8c186 100644
--- a/bsp/stm32/stm32g071-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32g071-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32g431-st-nucleo/applications/main.c b/bsp/stm32/stm32g431-st-nucleo/applications/main.c
index fa4fd35a6e..6d2bf2da24 100644
--- a/bsp/stm32/stm32g431-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32g431-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED2 pin mode to output */
     rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED2_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32h743-atk-apollo/applications/main.c b/bsp/stm32/stm32h743-atk-apollo/applications/main.c
index 376d3c78ff..ef4f783aa6 100644
--- a/bsp/stm32/stm32h743-atk-apollo/applications/main.c
+++ b/bsp/stm32/stm32h743-atk-apollo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32h743-st-nucleo/applications/main.c b/bsp/stm32/stm32h743-st-nucleo/applications/main.c
index 9a8ac51bb5..062f6d352b 100644
--- a/bsp/stm32/stm32h743-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32h743-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32h747-st-discovery/applications/main.c b/bsp/stm32/stm32h747-st-discovery/applications/main.c
index 3904f7b3bc..e4bf0fdf5d 100644
--- a/bsp/stm32/stm32h747-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32h747-st-discovery/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c b/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c
index b19e338dc5..b30b930b71 100644
--- a/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c
+++ b/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32h750-artpi-h750/applications/main.c b/bsp/stm32/stm32h750-artpi-h750/applications/main.c
index 6ab088b624..58a1949abe 100644
--- a/bsp/stm32/stm32h750-artpi-h750/applications/main.c
+++ b/bsp/stm32/stm32h750-artpi-h750/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l010-st-nucleo/applications/main.c b/bsp/stm32/stm32l010-st-nucleo/applications/main.c
index 5f22fcae65..b205d8c186 100644
--- a/bsp/stm32/stm32l010-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l010-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l053-st-nucleo/applications/main.c b/bsp/stm32/stm32l053-st-nucleo/applications/main.c
index 5f22fcae65..b205d8c186 100644
--- a/bsp/stm32/stm32l053-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l053-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l412-st-nucleo/applications/main.c b/bsp/stm32/stm32l412-st-nucleo/applications/main.c
index b22a9d1ba3..1f4f98a18d 100644
--- a/bsp/stm32/stm32l412-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l412-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LD4 pin mode to output */
     rt_pin_mode(LD4_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LD4_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l431-BearPi/applications/main.c b/bsp/stm32/stm32l431-BearPi/applications/main.c
index 9222b842fc..9da51ac6b9 100644
--- a/bsp/stm32/stm32l431-BearPi/applications/main.c
+++ b/bsp/stm32/stm32l431-BearPi/applications/main.c
@@ -17,19 +17,17 @@
 
 int main(void)
 {
-  int count = 1;
+    rt_kprintf("---Welcome use BearPi---\n");
+    /* set LED pin mode to output */
+    rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-  rt_kprintf("---Welcome use BearPi---\n");
-  /* set LED pin mode to output */
-  rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
+    while (1)
+    {
+        rt_pin_write(LED0_PIN, PIN_HIGH);
+        rt_thread_mdelay(500);
+        rt_pin_write(LED0_PIN, PIN_LOW);
+        rt_thread_mdelay(500);
+    }
 
-  while (count++)
-  {
-    rt_pin_write(LED0_PIN, PIN_HIGH);
-    rt_thread_mdelay(500);
-    rt_pin_write(LED0_PIN, PIN_LOW);
-    rt_thread_mdelay(500);
-  }
-
-  return RT_EOK;
+    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l432-st-nucleo/applications/main.c b/bsp/stm32/stm32l432-st-nucleo/applications/main.c
index 336347c11e..a74219c21a 100644
--- a/bsp/stm32/stm32l432-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l432-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l433-st-nucleo/applications/main.c b/bsp/stm32/stm32l433-st-nucleo/applications/main.c
index 056bad6689..20e26de5e0 100644
--- a/bsp/stm32/stm32l433-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l433-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l452-st-nucleo/applications/main.c b/bsp/stm32/stm32l452-st-nucleo/applications/main.c
index fa4fd35a6e..6d2bf2da24 100644
--- a/bsp/stm32/stm32l452-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l452-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED2 pin mode to output */
     rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED2_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l475-atk-pandora/applications/main.c b/bsp/stm32/stm32l475-atk-pandora/applications/main.c
index dfad8c68c1..a0db7f7a23 100644
--- a/bsp/stm32/stm32l475-atk-pandora/applications/main.c
+++ b/bsp/stm32/stm32l475-atk-pandora/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l475-st-discovery/applications/main.c b/bsp/stm32/stm32l475-st-discovery/applications/main.c
index bddb8abe63..419748d994 100644
--- a/bsp/stm32/stm32l475-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32l475-st-discovery/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l476-st-nucleo/applications/main.c b/bsp/stm32/stm32l476-st-nucleo/applications/main.c
index b22a8b8e8d..db859c5b0a 100644
--- a/bsp/stm32/stm32l476-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l476-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l496-ali-developer/applications/main.c b/bsp/stm32/stm32l496-ali-developer/applications/main.c
index 86d1cf72dd..7837b32e1f 100644
--- a/bsp/stm32/stm32l496-ali-developer/applications/main.c
+++ b/bsp/stm32/stm32l496-ali-developer/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l496-st-nucleo/applications/main.c b/bsp/stm32/stm32l496-st-nucleo/applications/main.c
index efe91875b9..fc5173819f 100644
--- a/bsp/stm32/stm32l496-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l496-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED2 pin mode to output */
     rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED2_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c b/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c
index 2dbb2b2c81..c916e2e682 100644
--- a/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c
@@ -23,11 +23,9 @@
 
 int main(void)
 {
-    int count = 1;
-
     rt_pin_mode(LED_RUN_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED_RUN_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32l4r9-st-eval/applications/main.c b/bsp/stm32/stm32l4r9-st-eval/applications/main.c
index c53f70fb97..431af5fcdf 100644
--- a/bsp/stm32/stm32l4r9-st-eval/applications/main.c
+++ b/bsp/stm32/stm32l4r9-st-eval/applications/main.c
@@ -18,11 +18,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED0_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32mp157a-st-discovery/applications/main.c b/bsp/stm32/stm32mp157a-st-discovery/applications/main.c
index 85d9d3ba89..39d87173fc 100644
--- a/bsp/stm32/stm32mp157a-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32mp157a-st-discovery/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LD7 pin mode to output */
     rt_pin_mode(LED7_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED7_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32mp157a-st-ev1/applications/main.c b/bsp/stm32/stm32mp157a-st-ev1/applications/main.c
index 6e70b83927..5c14a7f8a4 100644
--- a/bsp/stm32/stm32mp157a-st-ev1/applications/main.c
+++ b/bsp/stm32/stm32mp157a-st-ev1/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LD8 pin mode to output */
     rt_pin_mode(LED4_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED4_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32wb55-st-nucleo/applications/main.c b/bsp/stm32/stm32wb55-st-nucleo/applications/main.c
index f6e244c12c..cdc8b312f4 100644
--- a/bsp/stm32/stm32wb55-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32wb55-st-nucleo/applications/main.c
@@ -17,11 +17,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED0 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
diff --git a/bsp/stm32/stm32wl55-st-nucleo/applications/main.c b/bsp/stm32/stm32wl55-st-nucleo/applications/main.c
index 57385ad74c..9b54d7b2ec 100644
--- a/bsp/stm32/stm32wl55-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32wl55-st-nucleo/applications/main.c
@@ -19,11 +19,10 @@
 
 int main(void)
 {
-    int count = 1;
     /* set LED_BLUE pin mode to output */
     rt_pin_mode(LED_BLUE_PIN, PIN_MODE_OUTPUT);
 
-    while (count++)
+    while (1)
     {
         rt_pin_write(LED_BLUE_PIN, PIN_HIGH);
         rt_thread_mdelay(500);

From a13aea3a30c7fd5f261ec6bc3e198432464ab816 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 28 Mar 2021 22:38:17 +0800
Subject: [PATCH 2/2] remove return

---
 bsp/stm32/stm32f072-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f091-st-nucleo/applications/main.c        | 1 -
 bsp/stm32/stm32f103-atk-nano/applications/main.c         | 2 --
 bsp/stm32/stm32f103-atk-warshipv3/applications/main.c    | 2 --
 bsp/stm32/stm32f103-blue-pill/applications/main.c        | 2 --
 bsp/stm32/stm32f103-dofly-M3S/applications/main.c        | 2 --
 bsp/stm32/stm32f103-dofly-lyc8/applications/main.c       | 2 --
 bsp/stm32/stm32f103-fire-arbitrary/applications/main.c   | 2 --
 bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c | 2 --
 bsp/stm32/stm32f103-hw100k-ibox/applications/main.c      | 2 --
 bsp/stm32/stm32f103-onenet-nbiot/applications/main.c     | 2 --
 bsp/stm32/stm32f103-yf-ufun/applications/main.c          | 2 --
 bsp/stm32/stm32f107-uc-eval/applications/main.c          | 2 --
 bsp/stm32/stm32f401-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c  | 2 --
 bsp/stm32/stm32f407-atk-explorer/applications/main.c     | 2 --
 bsp/stm32/stm32f410-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f411-atk-nano/applications/main.c         | 2 --
 bsp/stm32/stm32f411-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f411-weact-MiniF4/applications/main.c     | 2 --
 bsp/stm32/stm32f412-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f413-st-nucleo/applications/main.c        | 3 +--
 bsp/stm32/stm32f427-robomaster-a/applications/main.c     | 2 --
 bsp/stm32/stm32f429-armfly-v6/applications/main.c        | 2 --
 bsp/stm32/stm32f429-atk-apollo/applications/main.c       | 2 --
 bsp/stm32/stm32f429-fire-challenger/applications/main.c  | 2 --
 bsp/stm32/stm32f429-st-disco/applications/main.c         | 2 --
 bsp/stm32/stm32f446-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f469-st-disco/applications/main.c         | 2 --
 bsp/stm32/stm32f746-st-disco/applications/main.c         | 2 --
 bsp/stm32/stm32f767-atk-apollo/applications/main.c       | 2 --
 bsp/stm32/stm32f767-fire-challenger/applications/main.c  | 2 --
 bsp/stm32/stm32f767-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32f769-st-disco/applications/main.c         | 2 --
 bsp/stm32/stm32g070-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32g071-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32g431-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32h743-atk-apollo/applications/main.c       | 1 -
 bsp/stm32/stm32h743-st-nucleo/applications/main.c        | 1 -
 bsp/stm32/stm32h747-st-discovery/applications/main.c     | 1 -
 bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c   | 1 -
 bsp/stm32/stm32h750-artpi-h750/applications/main.c       | 1 -
 bsp/stm32/stm32l010-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l053-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l412-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l431-BearPi/applications/main.c           | 2 --
 bsp/stm32/stm32l432-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l433-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l452-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l475-atk-pandora/applications/main.c      | 2 --
 bsp/stm32/stm32l475-st-discovery/applications/main.c     | 2 --
 bsp/stm32/stm32l476-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l496-ali-developer/applications/main.c    | 2 --
 bsp/stm32/stm32l496-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l4r5-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32l4r9-st-eval/applications/main.c          | 2 --
 bsp/stm32/stm32mp157a-st-discovery/applications/main.c   | 2 --
 bsp/stm32/stm32mp157a-st-ev1/applications/main.c         | 2 --
 bsp/stm32/stm32wb55-st-nucleo/applications/main.c        | 2 --
 bsp/stm32/stm32wl55-st-nucleo/applications/main.c        | 2 --
 60 files changed, 1 insertion(+), 114 deletions(-)

diff --git a/bsp/stm32/stm32f072-st-nucleo/applications/main.c b/bsp/stm32/stm32f072-st-nucleo/applications/main.c
index 88489a380c..1d48ded64d 100644
--- a/bsp/stm32/stm32f072-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f072-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED2_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f091-st-nucleo/applications/main.c b/bsp/stm32/stm32f091-st-nucleo/applications/main.c
index 6debd35f0b..61981d49b0 100644
--- a/bsp/stm32/stm32f091-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f091-st-nucleo/applications/main.c
@@ -27,7 +27,6 @@ int main(void)
         rt_pin_write(LED2_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-    return RT_EOK;
 }
 
 
diff --git a/bsp/stm32/stm32f103-atk-nano/applications/main.c b/bsp/stm32/stm32f103-atk-nano/applications/main.c
index 8b86d19f42..8569ce27bd 100644
--- a/bsp/stm32/stm32f103-atk-nano/applications/main.c
+++ b/bsp/stm32/stm32f103-atk-nano/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c b/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c
index 21591b27c9..8de9bd81e9 100644
--- a/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c
+++ b/bsp/stm32/stm32f103-atk-warshipv3/applications/main.c
@@ -33,6 +33,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-blue-pill/applications/main.c b/bsp/stm32/stm32f103-blue-pill/applications/main.c
index 49c8857458..1fcf936a48 100644
--- a/bsp/stm32/stm32f103-blue-pill/applications/main.c
+++ b/bsp/stm32/stm32f103-blue-pill/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-dofly-M3S/applications/main.c b/bsp/stm32/stm32f103-dofly-M3S/applications/main.c
index bec9c16a1c..3101374062 100644
--- a/bsp/stm32/stm32f103-dofly-M3S/applications/main.c
+++ b/bsp/stm32/stm32f103-dofly-M3S/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c b/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c
index 7d6ee4fd8d..ce702bb417 100644
--- a/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c
+++ b/bsp/stm32/stm32f103-dofly-lyc8/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c b/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c
index 2f87d8ba9c..e3078f4e82 100644
--- a/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c
+++ b/bsp/stm32/stm32f103-fire-arbitrary/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c b/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c
index a14486afca..a2ffe21b45 100644
--- a/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c
+++ b/bsp/stm32/stm32f103-gizwits-gokitv21/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED4_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c b/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c
index 9b5ca4b3a1..5ba5873b52 100644
--- a/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c
+++ b/bsp/stm32/stm32f103-hw100k-ibox/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c b/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c
index 8b86d19f42..8569ce27bd 100644
--- a/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c
+++ b/bsp/stm32/stm32f103-onenet-nbiot/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f103-yf-ufun/applications/main.c b/bsp/stm32/stm32f103-yf-ufun/applications/main.c
index 451ca36099..8f9c5c7a07 100644
--- a/bsp/stm32/stm32f103-yf-ufun/applications/main.c
+++ b/bsp/stm32/stm32f103-yf-ufun/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED3_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f107-uc-eval/applications/main.c b/bsp/stm32/stm32f107-uc-eval/applications/main.c
index 5ff9118958..9f1a27444d 100644
--- a/bsp/stm32/stm32f107-uc-eval/applications/main.c
+++ b/bsp/stm32/stm32f107-uc-eval/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f401-st-nucleo/applications/main.c b/bsp/stm32/stm32f401-st-nucleo/applications/main.c
index c4fc239753..d4200202ed 100644
--- a/bsp/stm32/stm32f401-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f401-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c b/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c
index 5fdff391d9..9f52445b11 100644
--- a/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f407-atk-explorer/applications/main.c b/bsp/stm32/stm32f407-atk-explorer/applications/main.c
index 897ea4e4c9..9fb7ebf153 100644
--- a/bsp/stm32/stm32f407-atk-explorer/applications/main.c
+++ b/bsp/stm32/stm32f407-atk-explorer/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f410-st-nucleo/applications/main.c b/bsp/stm32/stm32f410-st-nucleo/applications/main.c
index 796ed53fa1..0de22d3ffd 100644
--- a/bsp/stm32/stm32f410-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f410-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f411-atk-nano/applications/main.c b/bsp/stm32/stm32f411-atk-nano/applications/main.c
index c37fd1cdec..351b59dc19 100644
--- a/bsp/stm32/stm32f411-atk-nano/applications/main.c
+++ b/bsp/stm32/stm32f411-atk-nano/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f411-st-nucleo/applications/main.c b/bsp/stm32/stm32f411-st-nucleo/applications/main.c
index 95b3c77b36..9f36615507 100644
--- a/bsp/stm32/stm32f411-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f411-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c b/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c
index 178bef6ba6..f28cc62dd2 100644
--- a/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c
+++ b/bsp/stm32/stm32f411-weact-MiniF4/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f412-st-nucleo/applications/main.c b/bsp/stm32/stm32f412-st-nucleo/applications/main.c
index 77417937d5..3bc5104ea7 100644
--- a/bsp/stm32/stm32f412-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f412-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f413-st-nucleo/applications/main.c b/bsp/stm32/stm32f413-st-nucleo/applications/main.c
index 442502550c..ddd672e739 100644
--- a/bsp/stm32/stm32f413-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f413-st-nucleo/applications/main.c
@@ -31,7 +31,6 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_HIGH);
         rt_thread_mdelay(500);
         rt_pin_write(LED1_PIN, PIN_LOW);
+        rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f427-robomaster-a/applications/main.c b/bsp/stm32/stm32f427-robomaster-a/applications/main.c
index 1e82d7634e..f63f29396c 100644
--- a/bsp/stm32/stm32f427-robomaster-a/applications/main.c
+++ b/bsp/stm32/stm32f427-robomaster-a/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f429-armfly-v6/applications/main.c b/bsp/stm32/stm32f429-armfly-v6/applications/main.c
index d964d95335..152a11bab1 100644
--- a/bsp/stm32/stm32f429-armfly-v6/applications/main.c
+++ b/bsp/stm32/stm32f429-armfly-v6/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         HC574_SetPin(LED1,0);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f429-atk-apollo/applications/main.c b/bsp/stm32/stm32f429-atk-apollo/applications/main.c
index 3a41980f00..609b4e63b4 100644
--- a/bsp/stm32/stm32f429-atk-apollo/applications/main.c
+++ b/bsp/stm32/stm32f429-atk-apollo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f429-fire-challenger/applications/main.c b/bsp/stm32/stm32f429-fire-challenger/applications/main.c
index 457ec11f24..27c28e0cb2 100644
--- a/bsp/stm32/stm32f429-fire-challenger/applications/main.c
+++ b/bsp/stm32/stm32f429-fire-challenger/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f429-st-disco/applications/main.c b/bsp/stm32/stm32f429-st-disco/applications/main.c
index f28b0c70cb..48f43fd6fa 100644
--- a/bsp/stm32/stm32f429-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f429-st-disco/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f446-st-nucleo/applications/main.c b/bsp/stm32/stm32f446-st-nucleo/applications/main.c
index cad622b154..b419a79449 100644
--- a/bsp/stm32/stm32f446-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f446-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED2_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f469-st-disco/applications/main.c b/bsp/stm32/stm32f469-st-disco/applications/main.c
index 03fc02fffc..e5a331ad8c 100644
--- a/bsp/stm32/stm32f469-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f469-st-disco/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f746-st-disco/applications/main.c b/bsp/stm32/stm32f746-st-disco/applications/main.c
index 11497a85c3..d98649e9c6 100644
--- a/bsp/stm32/stm32f746-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f746-st-disco/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f767-atk-apollo/applications/main.c b/bsp/stm32/stm32f767-atk-apollo/applications/main.c
index 7a7438d1b6..bec589c403 100644
--- a/bsp/stm32/stm32f767-atk-apollo/applications/main.c
+++ b/bsp/stm32/stm32f767-atk-apollo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f767-fire-challenger/applications/main.c b/bsp/stm32/stm32f767-fire-challenger/applications/main.c
index 524c000ac5..3570c667c9 100644
--- a/bsp/stm32/stm32f767-fire-challenger/applications/main.c
+++ b/bsp/stm32/stm32f767-fire-challenger/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f767-st-nucleo/applications/main.c b/bsp/stm32/stm32f767-st-nucleo/applications/main.c
index e7ae8dd7ed..e270c27a91 100644
--- a/bsp/stm32/stm32f767-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f767-st-nucleo/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32f769-st-disco/applications/main.c b/bsp/stm32/stm32f769-st-disco/applications/main.c
index 17a86ceb17..396afa994a 100644
--- a/bsp/stm32/stm32f769-st-disco/applications/main.c
+++ b/bsp/stm32/stm32f769-st-disco/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32g070-st-nucleo/applications/main.c b/bsp/stm32/stm32g070-st-nucleo/applications/main.c
index b205d8c186..a438b9e67d 100644
--- a/bsp/stm32/stm32g070-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32g070-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32g071-st-nucleo/applications/main.c b/bsp/stm32/stm32g071-st-nucleo/applications/main.c
index b205d8c186..a438b9e67d 100644
--- a/bsp/stm32/stm32g071-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32g071-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32g431-st-nucleo/applications/main.c b/bsp/stm32/stm32g431-st-nucleo/applications/main.c
index 6d2bf2da24..5524d24935 100644
--- a/bsp/stm32/stm32g431-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32g431-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED2_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32h743-atk-apollo/applications/main.c b/bsp/stm32/stm32h743-atk-apollo/applications/main.c
index ef4f783aa6..c52580b1b1 100644
--- a/bsp/stm32/stm32h743-atk-apollo/applications/main.c
+++ b/bsp/stm32/stm32h743-atk-apollo/applications/main.c
@@ -27,5 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32h743-st-nucleo/applications/main.c b/bsp/stm32/stm32h743-st-nucleo/applications/main.c
index 062f6d352b..ef1884d3bc 100644
--- a/bsp/stm32/stm32h743-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32h743-st-nucleo/applications/main.c
@@ -27,5 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32h747-st-discovery/applications/main.c b/bsp/stm32/stm32h747-st-discovery/applications/main.c
index e4bf0fdf5d..2a91e93091 100644
--- a/bsp/stm32/stm32h747-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32h747-st-discovery/applications/main.c
@@ -27,5 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c b/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c
index b30b930b71..90a52049e4 100644
--- a/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c
+++ b/bsp/stm32/stm32h750-armfly-h7-tool/applications/main.c
@@ -27,5 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32h750-artpi-h750/applications/main.c b/bsp/stm32/stm32h750-artpi-h750/applications/main.c
index 58a1949abe..d4b0bb98a6 100644
--- a/bsp/stm32/stm32h750-artpi-h750/applications/main.c
+++ b/bsp/stm32/stm32h750-artpi-h750/applications/main.c
@@ -27,5 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l010-st-nucleo/applications/main.c b/bsp/stm32/stm32l010-st-nucleo/applications/main.c
index b205d8c186..a438b9e67d 100644
--- a/bsp/stm32/stm32l010-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l010-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l053-st-nucleo/applications/main.c b/bsp/stm32/stm32l053-st-nucleo/applications/main.c
index b205d8c186..a438b9e67d 100644
--- a/bsp/stm32/stm32l053-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l053-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l412-st-nucleo/applications/main.c b/bsp/stm32/stm32l412-st-nucleo/applications/main.c
index 1f4f98a18d..296c33d352 100644
--- a/bsp/stm32/stm32l412-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l412-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LD4_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l431-BearPi/applications/main.c b/bsp/stm32/stm32l431-BearPi/applications/main.c
index 9da51ac6b9..b5409814f6 100644
--- a/bsp/stm32/stm32l431-BearPi/applications/main.c
+++ b/bsp/stm32/stm32l431-BearPi/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l432-st-nucleo/applications/main.c b/bsp/stm32/stm32l432-st-nucleo/applications/main.c
index a74219c21a..d3654159d8 100644
--- a/bsp/stm32/stm32l432-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l432-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l433-st-nucleo/applications/main.c b/bsp/stm32/stm32l433-st-nucleo/applications/main.c
index 20e26de5e0..93992725f1 100644
--- a/bsp/stm32/stm32l433-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l433-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l452-st-nucleo/applications/main.c b/bsp/stm32/stm32l452-st-nucleo/applications/main.c
index 6d2bf2da24..5524d24935 100644
--- a/bsp/stm32/stm32l452-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l452-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED2_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l475-atk-pandora/applications/main.c b/bsp/stm32/stm32l475-atk-pandora/applications/main.c
index a0db7f7a23..7410e0463e 100644
--- a/bsp/stm32/stm32l475-atk-pandora/applications/main.c
+++ b/bsp/stm32/stm32l475-atk-pandora/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l475-st-discovery/applications/main.c b/bsp/stm32/stm32l475-st-discovery/applications/main.c
index 419748d994..c0c25b6705 100644
--- a/bsp/stm32/stm32l475-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32l475-st-discovery/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l476-st-nucleo/applications/main.c b/bsp/stm32/stm32l476-st-nucleo/applications/main.c
index db859c5b0a..2c204ae916 100644
--- a/bsp/stm32/stm32l476-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l476-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l496-ali-developer/applications/main.c b/bsp/stm32/stm32l496-ali-developer/applications/main.c
index 7837b32e1f..1d40627d3c 100644
--- a/bsp/stm32/stm32l496-ali-developer/applications/main.c
+++ b/bsp/stm32/stm32l496-ali-developer/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l496-st-nucleo/applications/main.c b/bsp/stm32/stm32l496-st-nucleo/applications/main.c
index fc5173819f..6c19612f99 100644
--- a/bsp/stm32/stm32l496-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l496-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED2_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c b/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c
index c916e2e682..845e68f25f 100644
--- a/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32l4r5-st-nucleo/applications/main.c
@@ -32,6 +32,4 @@ int main(void)
         rt_pin_write(LED_RUN_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32l4r9-st-eval/applications/main.c b/bsp/stm32/stm32l4r9-st-eval/applications/main.c
index 431af5fcdf..ea49f25f87 100644
--- a/bsp/stm32/stm32l4r9-st-eval/applications/main.c
+++ b/bsp/stm32/stm32l4r9-st-eval/applications/main.c
@@ -28,6 +28,4 @@ int main(void)
         rt_pin_write(LED0_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32mp157a-st-discovery/applications/main.c b/bsp/stm32/stm32mp157a-st-discovery/applications/main.c
index 39d87173fc..b5425e474b 100644
--- a/bsp/stm32/stm32mp157a-st-discovery/applications/main.c
+++ b/bsp/stm32/stm32mp157a-st-discovery/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED7_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32mp157a-st-ev1/applications/main.c b/bsp/stm32/stm32mp157a-st-ev1/applications/main.c
index 5c14a7f8a4..71f2ba733a 100644
--- a/bsp/stm32/stm32mp157a-st-ev1/applications/main.c
+++ b/bsp/stm32/stm32mp157a-st-ev1/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED4_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32wb55-st-nucleo/applications/main.c b/bsp/stm32/stm32wb55-st-nucleo/applications/main.c
index cdc8b312f4..b4a71ebc08 100644
--- a/bsp/stm32/stm32wb55-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32wb55-st-nucleo/applications/main.c
@@ -27,6 +27,4 @@ int main(void)
         rt_pin_write(LED1_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }
diff --git a/bsp/stm32/stm32wl55-st-nucleo/applications/main.c b/bsp/stm32/stm32wl55-st-nucleo/applications/main.c
index 9b54d7b2ec..9d38020849 100644
--- a/bsp/stm32/stm32wl55-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32wl55-st-nucleo/applications/main.c
@@ -29,6 +29,4 @@ int main(void)
         rt_pin_write(LED_BLUE_PIN, PIN_LOW);
         rt_thread_mdelay(500);
     }
-
-    return RT_EOK;
 }