diff --git a/bsp/stm32/stm32f072-st-nucleo/applications/main.c b/bsp/stm32/stm32f072-st-nucleo/applications/main.c
index 88489a380c2da5f1477faf2d8a1e2e37e0e830f4..1d48ded64dffef481f322044caa66b0e1683bc5f 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 6debd35f0bba7fc3cd6b026410193d033688051c..61981d49b024f2746af0f5af173b3c5759a93bc7 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 8b86d19f42a5e2fb929bd35eb53732019906c1a5..8569ce27bd51fee86dbe8e42cf29e9e7ae749059 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 21591b27c9d7335baa5fa439857805d2029f0ab2..8de9bd81e941b4192ac7d977eddbdbe73c7cb246 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 49c8857458de750b6a3c44d26ab3b8df4b1111d7..1fcf936a48e4cbd70511d7e3ef7a50c220183787 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 bec9c16a1cc3c890f17cf9ca28d0014bae898437..3101374062966dc86a1f7609fb6675f6a5443c69 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 7d6ee4fd8d1941af414c04a5f62a4c69ad1b2bef..ce702bb417f0015a8f3ec0d1ea7e54baf54a74f9 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 2f87d8ba9ce12db1c6f614e6e7738960b3be26e4..e3078f4e8267820e7ceaa29786d1e9f35a5e5c2a 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 a14486afca44a28f98030f4ab2dcbcf4abccaec2..a2ffe21b45348ee8d90b68b023f29dfa3e721048 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 9b5ca4b3a1120e5e7c2047ac2ac3036d964ba98a..5ba5873b52ffdec779caf71a2b35f0e23497d803 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 8b86d19f42a5e2fb929bd35eb53732019906c1a5..8569ce27bd51fee86dbe8e42cf29e9e7ae749059 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 451ca360999825dab33b4353f20de589c3820d27..8f9c5c7a07d89a4e746f2e8574bec23ff2af6d74 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 5ff91189586d5d203b623067ddd67c0c9e8e39e6..9f1a27444d0a0fe845afb6d4210a9c89748cae7c 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 c4fc239753d63bd39299a1eb155024c9dcdd5b80..d4200202ed0fa6516429f9553cb7b5be6db2ecc8 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 5fdff391d9201562e3bc96fb1d5f522a92c3d049..9f52445b11dd947ada40190840b45f12cc90cd81 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 897ea4e4c96748266e87b2a857fe6bc8d40c141f..9fb7ebf153832148aae597e460eb2f758af78de0 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 796ed53fa1beca1b77162e0ff20203c9f9f853ed..0de22d3ffde50f71e40efdffccdff6eaa7f40ae1 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 c37fd1cdecea96ed92809fbb75321fb1f93474b9..351b59dc19a8a83391b69c5afcd28fe957972307 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 95b3c77b3622de0336edc0be97c20a7f9e612ab8..9f366155073783c2f113c6ea035e5b88a8f398a3 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 178bef6ba6ff2e1ef0b3e9be382e7a6c128b986d..f28cc62dd27dbd18efd0dcc7d3fe395daaa683a0 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 77417937d58454775b1096092deac054275fefef..3bc5104ea722f49ccee4a0692ecd06d07663458e 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 442502550c67ba9a950e131305ecac06bbff4cdd..ddd672e739caa715c9f61d2b338707b347f1d42e 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 1e82d7634efd677aa3ce8b24df338428b7f55d01..f63f29396c7165420c5501bd8dc3ff7612eab654 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 d964d953350e9581ba52a31d98afa5ef2960bca5..152a11bab135c8e687f157d3a467167604b1750e 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 3a41980f00a1af0d45ff1f21a498e18a1d701fe5..609b4e63b45b6ef1abde07c2134c320f2b9159ae 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 457ec11f24078147e4ca72d0bbd3f548a5240966..27c28e0cb2e37a9e22eec31bc4bf0c19a11a2301 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 f28b0c70cbb7dd183ae4e62e73c08c6365a3df33..48f43fd6faa3ebc59fd31fc597bdf3e8136a73b5 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 cad622b154c912dc0a746fab9f42208ec3749cf4..b419a7944987a2b6b507d024c17ae0ed3fe1f23a 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 03fc02fffc57d38b1bb5a5ccc4dea310c10e35f5..e5a331ad8c77c204b10ded4d74f468bf3fafc05c 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 11497a85c358b0a5de27d46da5ba83b85f48e497..d98649e9c6d57de6215ca85bacccef1056db741e 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 7a7438d1b69a727d2d551ed6dd92d6e45ab807ad..bec589c403d97f2ab12ed342f9c46a7fc2d1391a 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 524c000ac5a687183a7ad17ee7ca6e43fb7f2ccd..3570c667c93e67dc65bc533ba81e57d7dd09b264 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 e7ae8dd7ede274927b46e641abcaf5b61784063c..e270c27a912cc58513ba6d10d8254d5a6188dd10 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 17a86ceb17742086badda02f8f9e19b3762b7f2a..396afa994a2cfa94ec3f3ab4967e623ccd9f3ba4 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 b205d8c186ab2256d9aa4c8a78e4dd05f3e056ed..a438b9e67deed6982a4f990fe4e97e0124094db7 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 b205d8c186ab2256d9aa4c8a78e4dd05f3e056ed..a438b9e67deed6982a4f990fe4e97e0124094db7 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 6d2bf2da24318d1f4366ed053b9d1c27bd915601..5524d249352dfdc301bad86791af1117258e08d8 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 ef4f783aa6ae20f732070217107c59b00713f333..c52580b1b18ae6f70db93f977d7e932502dabddc 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 062f6d352b7521de921c796da59b38cdc50fb1ce..ef1884d3bc0469bc448752d99ead94c57d47e680 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 e4bf0fdf5d849566d698cd30f982f2f8e40644a8..2a91e930913c6eec871d2b3847e86a446d198237 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 b30b930b71c76438c42ac3c1efc35c59c2a34306..90a52049e48f54d4b5997ffc741d716a1059bbfc 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 58a1949abe7269c01612cf9c237cd3d27c63cc34..d4b0bb98a62a2c7fee65e109aebaae80270b5369 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 b205d8c186ab2256d9aa4c8a78e4dd05f3e056ed..a438b9e67deed6982a4f990fe4e97e0124094db7 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 b205d8c186ab2256d9aa4c8a78e4dd05f3e056ed..a438b9e67deed6982a4f990fe4e97e0124094db7 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 1f4f98a18dccc22977c60a88f321de127a8643e4..296c33d3529634662f0ab1aef8e1d18bb95f0539 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 9da51ac6b9b8dd750e6a60a7a04740efd2fa2888..b5409814f644bcda393664a830b7ecb5371b623d 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 a74219c21a46d86a0fe9a16e8c91b11c3cbb0177..d3654159d81b5b2526e80d1a4ff2876a8fb53aa3 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 20e26de5e02c25194b7112c18675001c020a0426..93992725f1c454f56a5a0c50f0467b7d226433df 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 6d2bf2da24318d1f4366ed053b9d1c27bd915601..5524d249352dfdc301bad86791af1117258e08d8 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 a0db7f7a23369b00c840877d51607e89a7e9ccc4..7410e0463eafaf084ca76a485a39cc622ba1ffdc 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 419748d9940a21b09659784d970cf7bde4cd271e..c0c25b67056b390126c2aec3adba4ba19cd58e38 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 db859c5b0a36ce1df184396802cafc22151a72cc..2c204ae9162400dd2f469398b221a8da688a20d7 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 7837b32e1fce872d232b861c21d95f068d401bd2..1d40627d3c74cc4f5c3ffaffd42fed2a306cf974 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 fc5173819fa0aa51c18a8158e2cf77711b95c809..6c19612f990917a7a4e57039cc81532f9f63dba0 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 c916e2e68238df8ef53ae601bdd41c9e178ce0e8..845e68f25fb0a0d96ef32ce43e914f9cb54d704c 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 431af5fcdf2e9b47e8cbad41948b55b269ec800b..ea49f25f87be7b00df024dc2e0a5ea8e936764a2 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 39d87173fca04d1da1c01ed1f2af3a51a6388c2d..b5425e474b7a4bed4804eccd6e4c65df1c62e8c0 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 5c14a7f8a4559ad54d8e5f780312dd0d697d66ba..71f2ba733ad16749f941a389e548d56e4e96a580 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 cdc8b312f4eb00478f82c2df94dc728fd8c4a2ac..b4a71ebc089a2484bd8f19ccd0c69cf502890a35 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 9b54d7b2ec6c45c05f1c321872bab425f7738fe2..9d38020849507759fdf5191c346492b6012a3d4e 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;
 }