diff --git a/bsp/stm32/stm32f723-st-disco/board/Kconfig b/bsp/stm32/stm32f723-st-disco/board/Kconfig
index 3ea1ebed0f..14776d91c8 100644
--- a/bsp/stm32/stm32f723-st-disco/board/Kconfig
+++ b/bsp/stm32/stm32f723-st-disco/board/Kconfig
@@ -23,7 +23,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART6
diff --git a/bsp/stm32/stm32f746-st-disco/board/Kconfig b/bsp/stm32/stm32f746-st-disco/board/Kconfig
index ebacf3a6a0..2138e7b676 100644
--- a/bsp/stm32/stm32f746-st-disco/board/Kconfig
+++ b/bsp/stm32/stm32f746-st-disco/board/Kconfig
@@ -56,7 +56,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32f746-st-nucleo/board/Kconfig b/bsp/stm32/stm32f746-st-nucleo/board/Kconfig
index 079a895f5a..39d19f7003 100644
--- a/bsp/stm32/stm32f746-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32f746-st-nucleo/board/Kconfig
@@ -43,7 +43,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART3
diff --git a/bsp/stm32/stm32f767-atk-apollo/board/Kconfig b/bsp/stm32/stm32f767-atk-apollo/board/Kconfig
index 6d85141c10..46d1aa1ba0 100644
--- a/bsp/stm32/stm32f767-atk-apollo/board/Kconfig
+++ b/bsp/stm32/stm32f767-atk-apollo/board/Kconfig
@@ -76,7 +76,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32f767-fire-challenger-v1/board/Kconfig b/bsp/stm32/stm32f767-fire-challenger-v1/board/Kconfig
index f0fc996265..1082706410 100644
--- a/bsp/stm32/stm32f767-fire-challenger-v1/board/Kconfig
+++ b/bsp/stm32/stm32f767-fire-challenger-v1/board/Kconfig
@@ -68,7 +68,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32f767-st-nucleo/board/Kconfig b/bsp/stm32/stm32f767-st-nucleo/board/Kconfig
index 668f884af5..c0ffa3f491 100644
--- a/bsp/stm32/stm32f767-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32f767-st-nucleo/board/Kconfig
@@ -42,7 +42,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART3
diff --git a/bsp/stm32/stm32f769-st-disco/board/Kconfig b/bsp/stm32/stm32f769-st-disco/board/Kconfig
index 935fdace79..db3fef01c7 100644
--- a/bsp/stm32/stm32f769-st-disco/board/Kconfig
+++ b/bsp/stm32/stm32f769-st-disco/board/Kconfig
@@ -40,7 +40,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h503-st-nucleo/board/Kconfig b/bsp/stm32/stm32h503-st-nucleo/board/Kconfig
index 7c40481de6..db139bd9cd 100644
--- a/bsp/stm32/stm32h503-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32h503-st-nucleo/board/Kconfig
@@ -41,7 +41,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h563-st-nucleo/board/Kconfig b/bsp/stm32/stm32h563-st-nucleo/board/Kconfig
index 30787eff5e..d5ab9e6e07 100644
--- a/bsp/stm32/stm32h563-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32h563-st-nucleo/board/Kconfig
@@ -43,7 +43,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 4000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h723-st-nucleo/board/Kconfig b/bsp/stm32/stm32h723-st-nucleo/board/Kconfig
index 74eb4d8af9..6b33a4f34f 100644
--- a/bsp/stm32/stm32h723-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32h723-st-nucleo/board/Kconfig
@@ -18,7 +18,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART3
diff --git a/bsp/stm32/stm32h730-esphosted-evb/board/Kconfig b/bsp/stm32/stm32h730-esphosted-evb/board/Kconfig
index e92c79134e..b5937a6571 100644
--- a/bsp/stm32/stm32h730-esphosted-evb/board/Kconfig
+++ b/bsp/stm32/stm32h730-esphosted-evb/board/Kconfig
@@ -26,7 +26,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART2
diff --git a/bsp/stm32/stm32h743-armfly-v7/board/Kconfig b/bsp/stm32/stm32h743-armfly-v7/board/Kconfig
index 45c73478cd..f83f17331c 100644
--- a/bsp/stm32/stm32h743-armfly-v7/board/Kconfig
+++ b/bsp/stm32/stm32h743-armfly-v7/board/Kconfig
@@ -18,7 +18,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h743-atk-apollo/board/Kconfig b/bsp/stm32/stm32h743-atk-apollo/board/Kconfig
index 69f8a1e3bb..ada462a7cc 100644
--- a/bsp/stm32/stm32h743-atk-apollo/board/Kconfig
+++ b/bsp/stm32/stm32h743-atk-apollo/board/Kconfig
@@ -57,7 +57,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h743-openmv-h7plus/board/Kconfig b/bsp/stm32/stm32h743-openmv-h7plus/board/Kconfig
index 47dd4861d1..46fc3b21c4 100644
--- a/bsp/stm32/stm32h743-openmv-h7plus/board/Kconfig
+++ b/bsp/stm32/stm32h743-openmv-h7plus/board/Kconfig
@@ -15,7 +15,7 @@ menu "Hardware Drivers Config"
             if BSP_USING_UART
                 config BSP_STM32_UART_V1_TX_TIMEOUT
                     int "UART TX timeout"
-                    default 2000
+                    default 6000
                     depends on RT_USING_SERIAL_V1
                     
                 config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h743-st-nucleo/board/Kconfig b/bsp/stm32/stm32h743-st-nucleo/board/Kconfig
index 74eb4d8af9..6b33a4f34f 100644
--- a/bsp/stm32/stm32h743-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32h743-st-nucleo/board/Kconfig
@@ -18,7 +18,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART3
diff --git a/bsp/stm32/stm32h747-st-discovery/board/Kconfig b/bsp/stm32/stm32h747-st-discovery/board/Kconfig
index 45c73478cd..f83f17331c 100644
--- a/bsp/stm32/stm32h747-st-discovery/board/Kconfig
+++ b/bsp/stm32/stm32h747-st-discovery/board/Kconfig
@@ -18,7 +18,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h750-armfly-h7-tool/board/Kconfig b/bsp/stm32/stm32h750-armfly-h7-tool/board/Kconfig
index 52003efd77..4bb7fc6c8c 100644
--- a/bsp/stm32/stm32h750-armfly-h7-tool/board/Kconfig
+++ b/bsp/stm32/stm32h750-armfly-h7-tool/board/Kconfig
@@ -48,7 +48,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h750-artpi/board/Kconfig b/bsp/stm32/stm32h750-artpi/board/Kconfig
index 66971bab1a..62ad2f4922 100644
--- a/bsp/stm32/stm32h750-artpi/board/Kconfig
+++ b/bsp/stm32/stm32h750-artpi/board/Kconfig
@@ -145,7 +145,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             menuconfig BSP_USING_UART1
diff --git a/bsp/stm32/stm32h750-fk750m1-vbt6/board/Kconfig b/bsp/stm32/stm32h750-fk750m1-vbt6/board/Kconfig
index 48a8321452..d1f1bb1163 100644
--- a/bsp/stm32/stm32h750-fk750m1-vbt6/board/Kconfig
+++ b/bsp/stm32/stm32h750-fk750m1-vbt6/board/Kconfig
@@ -33,7 +33,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h750-weact-ministm32h7xx/board/Kconfig b/bsp/stm32/stm32h750-weact-ministm32h7xx/board/Kconfig
index 5286b91d58..865babeb32 100644
--- a/bsp/stm32/stm32h750-weact-ministm32h7xx/board/Kconfig
+++ b/bsp/stm32/stm32h750-weact-ministm32h7xx/board/Kconfig
@@ -61,7 +61,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             config BSP_USING_UART1
diff --git a/bsp/stm32/stm32h7s7-st-disco/board/Kconfig b/bsp/stm32/stm32h7s7-st-disco/board/Kconfig
index b1c7c39714..f93f06baff 100644
--- a/bsp/stm32/stm32h7s7-st-disco/board/Kconfig
+++ b/bsp/stm32/stm32h7s7-st-disco/board/Kconfig
@@ -44,7 +44,7 @@ menu "On-chip Peripheral Drivers"
         if BSP_USING_UART
             config BSP_STM32_UART_V1_TX_TIMEOUT
                 int "UART TX timeout"
-                default 2000
+                default 6000
                 depends on RT_USING_SERIAL_V1
                 
             menuconfig BSP_USING_UART1