diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_common.c b/bsp/bluetrum/libraries/hal_drivers/drv_common.c
index 75b3426010550ead5ef29f0c172362754a7ae302..7252050589e36a0f4f57bd10c85b6614cf1a1a84 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_common.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_common.c
@@ -19,27 +19,27 @@ void uart1_irq_process(void);
 RT_SECTION(".irq.uart")
 void uart0_irq_post(void)
 {
-    uint8_t mq_msg = MSG_UART0_IRQ;
+    rt_uint8_t mq_msg = MSG_UART0_IRQ;
     rt_mq_send(drv_mq, &mq_msg, 1);
 }
 
 RT_SECTION(".irq.uart")
 void uart1_irq_post(void)
 {
-    uint8_t mq_msg = MSG_UART1_IRQ;
+    rt_uint8_t mq_msg = MSG_UART1_IRQ;
     rt_mq_send(drv_mq, &mq_msg, 1);
 }
 
 RT_SECTION(".irq.uart")
 void uart2_irq_post(void)
 {
-    uint8_t mq_msg = MSG_UART2_IRQ;
+    rt_uint8_t mq_msg = MSG_UART2_IRQ;
     rt_mq_send(drv_mq, &mq_msg, 1);
 }
 
 static void drv_thread_entry(void *parameter)
 {
-    uint8_t mq_msg = 0;
+    rt_uint8_t mq_msg = 0;
     while (1) {
         rt_mq_recv(drv_mq, &mq_msg, 1, RT_WAITING_FOREVER);
         switch (mq_msg) {
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_usart.c b/bsp/bluetrum/libraries/hal_drivers/drv_usart.c
index 23aa85848d1087b21c719c5c5b6fbfaf5b0a6046..d1a46ad095f0874c07ab3fa5665ee234f49754fc 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_usart.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_usart.c
@@ -324,7 +324,7 @@ int rt_hw_usart_init(void)
                                        | RT_DEVICE_FLAG_INT_RX
                                        | RT_DEVICE_FLAG_INT_TX
                                        | uart_obj[i].uart_dma_flag
-                                       , NULL);
+                                       , RT_NULL);
         RT_ASSERT(result == RT_EOK);
     }