diff --git a/inc/flash.h b/inc/flash.h
--- a/inc/flash.h
+++ b/inc/flash.h
@@ -8,12 +8,14 @@
 #define PAGE_SIZE ((uint16_t)0x400)
 #define END_ADDR 0x08007FFF
 
+
 typedef union
 {
     struct {
         uint32_t can_id;
         uint16_t data_rate;
         uint8_t led_brightness;
+        flash_user_vars_t user;
     } val;
 
     uint16_t data[128];
diff --git a/inc/protocol.h b/inc/protocol.h
--- a/inc/protocol.h
+++ b/inc/protocol.h
@@ -62,6 +62,7 @@ typedef enum {
 
 void protocol_init(protocol_device_t device);
 flash_settings_t* protocol_get_settings(void);
+void protocol_save_settings(void);
 bool protocol_receive_message(CanRxMsgTypeDef* can_message);
 bool protocol_send_message(protocol_message_t* message);
 bool protocol_process_message(protocol_message_t* message);
diff --git a/src/can_buffer.c b/src/can_buffer.c
--- a/src/can_buffer.c
+++ b/src/can_buffer.c
@@ -20,7 +20,7 @@ CanBufferStatus can_buffer_add(volatile 
 
 volatile CanRxMsgTypeDef* can_buffer_remove(volatile CanBuffer *buffer)
 {
-    volatile CanRxMsgTypeDef* msg;
+    volatile CanRxMsgTypeDef* msg = NULL;
     if (buffer->count > 0) {
         msg = &buffer->data[buffer->tail];
         buffer->tail = (buffer->tail + 1) % CAN_BUFFER_SIZE;
diff --git a/src/protocol.c b/src/protocol.c
--- a/src/protocol.c
+++ b/src/protocol.c
@@ -17,6 +17,11 @@ flash_settings_t* protocol_get_settings(
     return &protocol_settings;
 }
 
+void protocol_save_settings(void)
+{
+    flash_save(&protocol_settings);
+}
+
 bool protocol_send_test()
 {
     bool result = true;