diff --git a/app/drivers/sertrf/device.c b/app/drivers/sertrf/device.c
index dcc571c..5c68893 100644
--- a/app/drivers/sertrf/device.c
+++ b/app/drivers/sertrf/device.c
@@ -46,6 +46,12 @@ uint8_t device_init(device_t *port)
     {
         SYS_LOG_ERR("pc device choice error");
     }
+
+    res = app_device_choice(port, DATA_PORT_TYPE_BLE_CMD);
+    if(res == DEVICE_EMBEDDED_ERROR)
+    {
+        SYS_LOG_ERR("app device choice error");
+    }
     SYS_LOG_INF("device init success");
     return DEVICE_OK;
 }
@@ -265,7 +271,7 @@ void wifi_mode_switch(init_device_t *port)
 uint8_t embedded_device_choice(device_t *port, uint8_t type)
 {
     //端口与PC一致
-    if(port->pc_device_type == type)
+    if((port->pc_device_type == type || port->app_device_type == type) && type != DATA_PORT_TYPE_NONE)
     {
         SYS_LOG_WRN("pc Port consistency");
         return DEVICE_WRN_EMBEDDED_TYPE;
@@ -274,6 +280,9 @@ uint8_t embedded_device_choice(device_t *port, uint8_t type)
     port->embedded_device_type = type;
     switch (port->embedded_device_type)
     {
+        case DATA_PORT_TYPE_NONE:
+            port->embedded_device = NULL;
+            break;
         case DATA_PORT_TYPE_UART:
             port->embedded_device = port->init_device.uart_port;
             break;
@@ -293,7 +302,7 @@ uint8_t embedded_device_choice(device_t *port, uint8_t type)
             break;
     }
 
-    if(port->embedded_device == NULL)
+    if(port->embedded_device == NULL && type != DATA_PORT_TYPE_NONE)
     {
         SYS_LOG_WRN("embedded device choice error");
         return DEVICE_EMBEDDED_ERROR;
@@ -304,15 +313,24 @@ uint8_t embedded_device_choice(device_t *port, uint8_t type)
 
 int embedded_device_read(device_t *port, void *buffer, uint32_t length, uint32_t timeout)
 {
+    if(port->embedded_device == NULL)
+        return -1;
+
     return sb_data_port_read(port->embedded_device, buffer, length, timeout);
 }
 
 int embedded_device_write(device_t *port, void *buffer, uint32_t length)
 {
+    if(port->embedded_device == NULL)
+        return -1;
+
     return sb_data_port_write(port->embedded_device, buffer, length, 0);
 }
 uint32_t embedded_device_get_rx_length(device_t *port)
 {
+    if(port->embedded_device == NULL)
+        return 0;
+
     return sb_data_port_get_rx_length(port->embedded_device);
 }
 
@@ -334,7 +352,7 @@ static uint8_t pc_device_choice_inside(device_t *port, uint8_t type, uint8_t con
 uint8_t pc_device_choice(device_t *port, uint8_t type)
 {
     //端口与embedded一致
-    if(port->embedded_device_type == type)
+    if((port->embedded_device_type == type || port->app_device_type == type) && type != DATA_PORT_TYPE_NONE)
     {
         SYS_LOG_WRN("embedded Port consistency");
         return DEVICE_WRN_PC_TYPE;
@@ -343,6 +361,9 @@ uint8_t pc_device_choice(device_t *port, uint8_t type)
     port->pc_device_type = type;
     switch (port->pc_device_type)
     {
+        case DATA_PORT_TYPE_NONE:
+            port->pc_device = NULL;
+            break;
         case DATA_PORT_TYPE_UART:
             port->pc_device = port->init_device.uart_port;
             break;
@@ -362,7 +383,7 @@ uint8_t pc_device_choice(device_t *port, uint8_t type)
             break;
     }
 
-    if(port->pc_device == NULL)
+    if(port->pc_device == NULL && type != DATA_PORT_TYPE_NONE)
     {
         SYS_LOG_WRN("pc device choice error");
         return DEVICE_PC_ERROR;
@@ -372,11 +393,17 @@ uint8_t pc_device_choice(device_t *port, uint8_t type)
 }
 int pc_device_read(device_t *port, void *buffer, uint32_t length)
 {
+    if (port->pc_device == NULL)
+        return -1;
+
     return sb_data_port_read(port->pc_device, buffer, length, 0);
 }
 
 int pc_device_write(device_t *port, void *buffer, uint32_t length)
 {
+    if(port->pc_device == NULL)
+        return -1;
+
     if(port->connect_pc)
         return sb_data_port_write(port->pc_device, buffer, length, 0);
     
@@ -384,5 +411,73 @@ int pc_device_write(device_t *port, void *buffer, uint32_t length)
 }
 uint32_t pc_device_get_rx_length(device_t *port)
 {
+    if(port->pc_device == NULL)
+        return 0;
+
     return sb_data_port_get_rx_length(port->pc_device);
+}
+
+uint8_t app_device_choice(device_t *port, uint8_t type)
+{
+    //端口与PC一致
+    if((port->pc_device_type == type || port->embedded_device_type == type) && type != DATA_PORT_TYPE_NONE)
+    {
+        SYS_LOG_WRN("pc Port consistency");
+        return DEVICE_WRN_EMBEDDED_TYPE;
+    }
+    
+    port->app_device_type = type;
+    switch (port->app_device_type)
+    {
+        case DATA_PORT_TYPE_NONE:
+            port->app_device = NULL;
+            break;
+        case DATA_PORT_TYPE_UART:
+            port->app_device = port->init_device.uart_port;
+            break;
+        case DATA_PORT_TYPE_WIFI_TCP:
+            port->app_device = port->init_device.wifi_tcp;
+            break;
+        case DATA_PORT_TYPE_WIFI_UDP:
+            port->app_device = port->init_device.wifi_udp;
+            break;
+        case DATA_PORT_TYPE_BLE_CMD:
+            port->app_device = port->init_device.ble_spp_server_cmd;
+            break;
+        case DATA_PORT_TYPE_BLE_VAL:
+            port->app_device = port->init_device.ble_spp_server_val;
+            break;
+        default:
+            break;
+    }
+
+    if(port->app_device == NULL && type != DATA_PORT_TYPE_NONE)
+    {
+        SYS_LOG_WRN("embedded device choice error");
+        return DEVICE_EMBEDDED_ERROR;
+    }
+
+    return DEVICE_OK;
+}
+int app_device_read(device_t *port, void *buffer, uint32_t length, uint32_t timeout)
+{
+    if(port->app_device == NULL)
+        return -1;
+    
+    return sb_data_port_read(port->app_device, buffer, length, timeout);
+}
+
+int app_device_write(device_t *port, void *buffer, uint32_t length)
+{
+    if(port->app_device == NULL)
+        return -1;
+
+    return sb_data_port_write(port->app_device, buffer, length, 0);
+}
+uint32_t app_device_get_rx_length(device_t *port)
+{
+    if(port->app_device == NULL)
+        return 0;
+
+    return sb_data_port_get_rx_length(port->app_device);
 }
\ No newline at end of file
diff --git a/app/drivers/sertrf/device.h b/app/drivers/sertrf/device.h
index d999143..263387f 100644
--- a/app/drivers/sertrf/device.h
+++ b/app/drivers/sertrf/device.h
@@ -68,8 +68,12 @@ typedef struct
 {
     uint8_t embedded_device_type;
     uint8_t pc_device_type;
+    uint8_t app_device_type;
+
     sb_data_port_t* embedded_device;
     sb_data_port_t* pc_device;
+    sb_data_port_t* app_device;
+
     init_device_t init_device;
 
     uint8_t connect_embedded;
@@ -186,4 +190,9 @@ int pc_device_write(device_t *port, void *buffer, uint32_t length);
  * @param size 写入数据长度
  * @retval 缓存中可读取的字节数
  */
-uint32_t pc_device_get_rx_length(device_t *port);
\ No newline at end of file
+uint32_t pc_device_get_rx_length(device_t *port);
+
+uint8_t app_device_choice(device_t *port, uint8_t type);
+int app_device_read(device_t *port, void *buffer, uint32_t length, uint32_t timeout);
+int app_device_write(device_t *port, void *buffer, uint32_t length);
+uint32_t app_device_get_rx_length(device_t *port);
\ No newline at end of file
diff --git a/app/drivers/sertrf/ota_u.h b/app/drivers/sertrf/ota_u.h
index 9c9cfd6..a15f6ca 100644
--- a/app/drivers/sertrf/ota_u.h
+++ b/app/drivers/sertrf/ota_u.h
@@ -16,6 +16,10 @@ typedef struct
     int total_size;
 }ota_u_t;
 
+/**
+ * @brief 获取当前ota信息
+ */
+void get_partition_status(ota_u_t* otau);
 /**
  * @brief OTA初始化
  * 
diff --git a/app/drivers/sertrf/sertrf.c b/app/drivers/sertrf/sertrf.c
index a930d8f..7fd4f2d 100644
--- a/app/drivers/sertrf/sertrf.c
+++ b/app/drivers/sertrf/sertrf.c
@@ -20,6 +20,8 @@ void sertrf_init(void)
     // 协议初始化
     sertrf.resend_read_mutex = xSemaphoreCreateMutex();
     resend_init(&sertrf.resend_device, resend_send, resend_recv, resend_get_length,resend_user_parse);
+    //OAT信息获取
+    get_partition_status(&sertrf.otau);
     //线程启动
     sertrf_start();
 }
@@ -37,6 +39,12 @@ void sertrf_start(void)
                      NULL,
                      4096,
                      20);
+    os_thread_create(&sertrf.app_thread,
+                     "app_thread",
+                     app_thread,
+                     NULL,
+                     4096,
+                     15);
     os_thread_create(&sertrf.task_thread,
                      "task_thread",
                      task_thread,
@@ -60,7 +68,7 @@ void embedded_thread(void* arg)
             // SYS_LOG_INF("data : %s", data);
             pc_device_write(&sertrf.device, data, embedded_size);
         }
-        printf_chill_time(10,1000);
+        // printf_chill_time(10,1000);
         
         //需要添加一些延时，否则会卡死，导致看门狗复位
         // vTaskDelay(( TickType_t ) 1000 / configTICK_RATE_HZ);
@@ -87,7 +95,26 @@ void pc_thread(void* arg)
         os_thread_sleep(1);
     }
 }
-
+void app_thread(void* arg)
+{
+    while (true)
+    {
+        switch(0)
+        {
+            case 0:
+                break;
+            case 1:
+                break;
+            default:
+                break;
+        }
+        
+        resend_recv_data(&sertrf.resend_device,0);
+        
+        os_thread_sleep(1);
+    }
+    
+}
 void task_thread(void* arg)
 {
     while(true)
@@ -103,16 +130,16 @@ void task_thread(void* arg)
                 switch(get_protocol_status())
                 {
                     case PROTOCOL_STATUS_OK:
-                        rgb_color_change(0, sertrf.device.last_color);
+                        rgb_color_change(1, sertrf.device.last_color);
                         break;
                     case PROTOCOL_STATUS_NO_DATA:
-                        rgb_color_change(0, RGB_COLOR_RAD);
+                        rgb_color_change(1, RGB_COLOR_RAD);
                         break;
                     case PROTOCOL_STATUS_TYPE_IDLE:
-                        rgb_color_change(0, RGB_COLOR_RAD);
+                        rgb_color_change(1, RGB_COLOR_RAD);
                         break;
                     case PROTOCOL_STATUS_ANALYSIS_ERROR:
-                        rgb_color_change(0, RGB_COLOR_RAD);
+                        rgb_color_change(1, RGB_COLOR_RAD);
                         break;
                     default:
                         break;
@@ -173,12 +200,12 @@ void pc_link_rgb_color(device_t* device)
     }
     if(device->connect_pc == DISCONNECT)
     {
-        rgb_update_cyle(50);
+        rgb_update_cyle(0,50);
     }
     else if(device->connect_pc){
-        rgb_update_cyle(888);
+        rgb_update_cyle(0,888);
     }else{
-        rgb_update_cyle(500);
+        rgb_update_cyle(0,500);
     }
 }
 
@@ -207,7 +234,7 @@ void printf_chill_time(uint8_t chill_time, uint16_t type)
 
 int resend_send(void* data, uint16_t len, int timeout)
 {
-    return embedded_device_write(&sertrf.device, data, len);
+    return app_device_write(&sertrf.device, data, len);
 }
 int resend_recv(void* data, uint16_t len, int timeout)
 {
@@ -215,14 +242,14 @@ int resend_recv(void* data, uint16_t len, int timeout)
     
     if (xSemaphoreTake(sertrf.resend_read_mutex, portMAX_DELAY) == pdTRUE)
     {
-        ret = embedded_device_read(&sertrf.device, data, len,timeout);
+        ret = app_device_read(&sertrf.device, data, len,timeout);
         xSemaphoreGive(sertrf.resend_read_mutex);
     }
     return ret;
 }
 int resend_get_length(void)
 {
-    return embedded_device_get_rx_length(&sertrf.device);
+    return app_device_get_rx_length(&sertrf.device);
 }
 void resend_user_parse(void *resend_device) 
 {
diff --git a/app/drivers/sertrf/sertrf.h b/app/drivers/sertrf/sertrf.h
index e70e542..e4e622d 100644
--- a/app/drivers/sertrf/sertrf.h
+++ b/app/drivers/sertrf/sertrf.h
@@ -12,10 +12,12 @@ typedef struct
     os_thread_t embedded_thread;
     os_thread_t pc_thread;
     os_thread_t task_thread;
-
+    os_thread_t app_thread;
     ota_u_t otau;
+
     resend_device_t resend_device;
     SemaphoreHandle_t resend_read_mutex;
+    
 }sertrf_t;
 
 /**
@@ -47,6 +49,10 @@ void embedded_thread(void* arg);
  * @brief pc thread
 */
 void pc_thread(void* arg);
+/**
+ * @brief app thread
+ */
+void app_thread(void* arg);
 /**
  * @brief task thread
  */