diff --git a/src/tests/definition.h b/src/tests/definition.h
index 357ab32..b498ecb 100644
--- a/src/tests/definition.h
+++ b/src/tests/definition.h
@@ -8,9 +8,10 @@
 
 #include <Arduino.h>
 #include <RF24.h>
+#include "packet_format.h"
 
 //Serial debug config part
-#define SERIAL_DEBUG_ENABLED 0
+#define SERIAL_DEBUG_ENABLED 1
 #define SERIAL_BAUD_RATE 115200
 
 //Battery config part
@@ -23,6 +24,9 @@
 #define RADIO_PA_LEVEL RF24_PA_MAX
 #define RADIO_DATARATE RF24_250KBPS
 
+//Seep config part
+#define SLEEP_4_SEC_INTERVAL 1//15
+
 //Pin config part
 typedef enum
 {
@@ -40,4 +44,18 @@ typedef enum
   A1_LDR_V_SENS = A1,
 } Pin;
 
+//Payload structure
+typedef struct 
+{
+  uint16_t id;
+  HEADER_e header : 6;
+  unsigned int ldr : 10;
+  float battery;
+  float bmpTemp;
+  float bmpPress;
+  float humidity;
+  float compensatedHumidity;
+  float htuTemp;
+} DataPacket __attribute__((__packed__));
+
 #endif //DEFINITION_H