diff --git a/app/isr.c b/app/isr.c
index cf9dd1c..80284e2 100644
--- a/app/isr.c
+++ b/app/isr.c
@@ -93,6 +93,9 @@ void USART1_IRQHandler(void)
 void USART2_IRQHandler(void)
 {
     if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) {
+        uint8_t data_s = 0;
+        uart_query_byte(UART_2, &data_s);
+        by_tiny_frame_parse_uart_handle(data_s);
         USART_ClearITPendingBit(USART2, USART_IT_RXNE);
     }
 }
@@ -102,9 +105,6 @@ void USART3_IRQHandler(void)
 #if DEBUG_UART_USE_INTERRUPT // 如果开启 debug 串口中断
                              // debug_interrupr_handler(); // 调用 debug 串口接收处理函数 数据会被 debug 环形缓冲区读取
 #endif                       // 如果修改了 DEBUG_UART_INDEX 那这段代码需要放到对应的串口中断去
-        uint8_t data_s = 0;
-        uart_query_byte(UART_3, &data_s);
-        by_tiny_frame_parse_uart_handle(data_s);
         USART_ClearITPendingBit(USART3, USART_IT_RXNE);
     }
 }
diff --git a/app/tiny_frame/by_tiny_frame_config.h b/app/tiny_frame/by_tiny_frame_config.h
index a302e29..c830efa 100644
--- a/app/tiny_frame/by_tiny_frame_config.h
+++ b/app/tiny_frame/by_tiny_frame_config.h
@@ -3,9 +3,9 @@
 
 #define BY_TF_DEBUG             (1)
 
-#define BY_TF_UART_TX_PIN       (UART3_MAP0_TX_B10)
-#define BY_TF_UART_RX_PIN       (UART3_MAP0_RX_B11)
-#define BY_TF_UART_INDEX        (UART_3)
+#define BY_TF_UART_TX_PIN       (UART2_MAP0_TX_A2)
+#define BY_TF_UART_RX_PIN       (UART2_MAP0_RX_A3)
+#define BY_TF_UART_INDEX        (UART_2)
 #define BY_TF_UART_BAUDRATE     (115200)
 
 #define BY_TF_PARSE_BUFFER_SIZE (50)
diff --git a/app/tiny_frame/by_tiny_frame_master_read.c b/app/tiny_frame/by_tiny_frame_master_read.c
index de3f551..d165a35 100644
--- a/app/tiny_frame/by_tiny_frame_master_read.c
+++ b/app/tiny_frame/by_tiny_frame_master_read.c
@@ -2,7 +2,6 @@
 
 #if defined(BY_TF_DEVICE_MASTER)
 
-uint8_t read_processing_flag;
 uint32_t *data_p;
 
 void by_tiny_frame_read_run(void)
@@ -11,6 +10,11 @@ void by_tiny_frame_read_run(void)
 
 void by_tiny_frame_read(uint8_t slave_id, uint16_t reg_addr, uint32_t *data)
 {
+    if (by_tiny_frame_pack_lock) {
+        // 鍐欏叆蹇欏鐞�
+        return;
+    }
+
     // 濉厖鏁版嵁
     by_tf_pack_frame_t frame_s;
     frame_s.slave_id = slave_id;
@@ -27,13 +31,13 @@ void by_tiny_frame_read(uint8_t slave_id, uint16_t reg_addr, uint32_t *data)
     // 寮�鍚搷搴旂洃鍚�
     by_tiny_frame_parse_start_listen();
 
-    read_processing_flag = 1;
+    by_tiny_frame_pack_lock = 0;
 }
 
 void by_tiny_frame_read_handle(by_tf_parse_frame_t frame_s, uint8_t status)
 {
 
-    read_processing_flag = 0;
+    by_tiny_frame_pack_lock = 0;
     if (!status) {
         *data_p = frame_s.data;
     }
diff --git a/app/tiny_frame/by_tiny_frame_master_write.c b/app/tiny_frame/by_tiny_frame_master_write.c
index b2f6f6c..f5adb6a 100644
--- a/app/tiny_frame/by_tiny_frame_master_write.c
+++ b/app/tiny_frame/by_tiny_frame_master_write.c
@@ -5,8 +5,6 @@
 #include "by_tiny_frame_pack.h"
 #include "by_tiny_frame_parse.h"
 
-uint8_t write_processing_flag;
-
 void by_tiny_frame_write_run(void)
 {
     // nothing
@@ -14,6 +12,11 @@ void by_tiny_frame_write_run(void)
 
 void by_tiny_frame_write(uint8_t slave_id, uint16_t reg_addr, uint32_t data)
 {
+    if(by_tiny_frame_pack_lock){
+        //鍐欏叆蹇欏鐞�
+        return;
+    }
+
     // 濉厖鏁版嵁
     by_tf_pack_frame_t frame_s;
     frame_s.slave_id = slave_id;
@@ -30,12 +33,12 @@ void by_tiny_frame_write(uint8_t slave_id, uint16_t reg_addr, uint32_t data)
     // 寮�鍚搷搴旂洃鍚�
     by_tiny_frame_parse_start_listen();
 
-    write_processing_flag = 1;
+    by_tiny_frame_pack_lock = 1;
 }
 
 void by_tiny_frame_write_handle(by_tf_parse_frame_t frame_s, uint8_t status)
 {
-    write_processing_flag = 0;
+    by_tiny_frame_pack_lock = 0;
 
 #if (BY_TF_DEBUG)
     printf("****** WRITE REGISTER DONE ******\r\n");
diff --git a/app/tiny_frame/by_tiny_frame_pack.c b/app/tiny_frame/by_tiny_frame_pack.c
index 78107f0..fb6dfbf 100644
--- a/app/tiny_frame/by_tiny_frame_pack.c
+++ b/app/tiny_frame/by_tiny_frame_pack.c
@@ -4,9 +4,12 @@
 #include "zf_common_headfile.h"
 #include "crc16.h"
 
+uint8_t by_tiny_frame_pack_lock;
+
 void by_tiny_frame_pack_init(void)
 {
     /** nothing to init **/
+    by_tiny_frame_pack_lock = 0;
 }
 
 void by_tiny_frame_pack_send(by_tf_pack_frame_t *frame_s)
diff --git a/app/tiny_frame/by_tiny_frame_pack.h b/app/tiny_frame/by_tiny_frame_pack.h
index 70fbb9d..4d44d87 100644
--- a/app/tiny_frame/by_tiny_frame_pack.h
+++ b/app/tiny_frame/by_tiny_frame_pack.h
@@ -21,4 +21,6 @@ typedef struct by_tf_pack_frame_t {
 extern void by_tiny_frame_pack_init(void);
 extern void by_tiny_frame_pack_send(by_tf_pack_frame_t *frame_s);
 
+extern uint8_t by_tiny_frame_pack_lock;
+
 #endif