diff --git a/app/app.c b/app/app.c
index 7a444c3..e2e3b39 100644
--- a/app/app.c
+++ b/app/app.c
@@ -6,24 +6,19 @@
 #define SER_BUF_SIZE 128
 uint8_t ser_buffer[SER_BUF_SIZE];
 
-
 uint8_t serialize(uint8_t* buffer, size_t* len) {
     size_t message_length = 0;
     bool status = 0;
     static uint32_t cnt = 0;
     SimpleMessage message = SimpleMessage_init_zero;
     
-    /* Create a stream that will write to our buffer. */
     pb_ostream_t stream = pb_ostream_from_buffer(buffer, sizeof(buffer));
     
-    /* Fill in the lucky number */
     message.number = cnt++;
-    /* Now we are ready to encode the message! */
+
     status = pb_encode(&stream, SimpleMessage_fields, &message);
     *len = stream.bytes_written;
 
-    
-    /* Then just check for any errors.. */
     if (!status)
     {
         printf("Encoding failed: %s\n", PB_GET_ERROR(&stream));
@@ -33,9 +28,9 @@ uint8_t serialize(uint8_t* buffer, size_t* len) {
     return 0;
 }
 
-
-
 void sendData(sd_callback_t send_data_callback) {
+    if (get_dbg_uart() == NULL) 
+        return;
     size_t ser_len = 0;
     serialize(ser_buffer, &ser_len);
     send_data_callback(ser_buffer, ser_len);
diff --git a/app/main.c b/app/main.c
index 8b5858f..12b9fbe 100644
--- a/app/main.c
+++ b/app/main.c
@@ -1,8 +1,6 @@
 #include "../bsp/bsp.h"
 #include "app.h"
 
-
-
 int main(void)
 {
   boardInit();
diff --git a/bsp/bsp.c b/bsp/bsp.c
index 633299a..98161ef 100644
--- a/bsp/bsp.c
+++ b/bsp/bsp.c
@@ -7,6 +7,10 @@ static USART_TypeDef* dbg_uart = NULL;
 
 static lwip_status_t lwip_status = {.link_status = LINK_DOWN};
 
+USART_TypeDef* get_dbg_uart() {
+    return &dbg_uart;
+}
+
 lwip_status_t* getLwipStatus() {
     return &lwip_status;
 }
diff --git a/bsp/bsp.h b/bsp/bsp.h
index 7f0a990..77e896d 100644
--- a/bsp/bsp.h
+++ b/bsp/bsp.h
@@ -22,5 +22,6 @@ typedef struct {
 
 void boardInit();
 lwip_status_t* getLwipStatus();
+USART_TypeDef* get_dbg_uart();
 void send_uart(const uint8_t*, uint8_t);
 #endif
\ No newline at end of file