diff --git a/device_adc.h b/device_adc.h
index 39eba65..ad02257 100644
--- a/device_adc.h
+++ b/device_adc.h
@@ -1,7 +1,43 @@
-#ifndef DEVICE_ADC_H
-#define DEVICE_ADC_H
-
-void adc_init(void);
-uint16_t get_adc_value(void);
-
+#ifndef DEVICE_ADC_H
+#define DEVICE_ADC_H
+
+#include <avr/interrupt.h>
+#include <stdint.h>
+#include <avr/io.h>
+#define F_CPU 16000000
+
+#define REFS1_BIT (7)
+#define REFS1_MASK (1<<REFS1_BIT)
+#define REFS0_BIT (6)
+#define REFS0_MASK (1<<REFS0_BIT)
+#define ADLAR_BIT (5)
+#define ADLAR_MASK (1<<ADLAR_BIT)
+#define MUX3_BIT (3)
+#define MUX3_MASK (1<<MUX3_BIT)
+#define MUX2_BIT (2)
+#define MUX2_MASK (1<<MUX2_BIT)
+#define MUX1_BIT (1)
+#define MUX1_MASK (1<<MUX1_BIT)
+#define MUX0_BIT (0)
+#define MUX0_MASK (1<<MUX0_BIT)
+#define ADEN_BIT (7)
+#define ADEN_MASK (1<<ADEN_BIT)
+#define ADPS2_BIT (2)
+#define ADPS2_MASK (1<<ADPS2_BIT)
+#define ADPS1_BIT (1)
+#define ADPS1_MASK (1<<ADPS1_BIT)
+#define ADPS0_BIT (0)
+#define ADPS0_MASK (1<<ADPS0_BIT)
+#define ADSC_BIT (6)
+#define ADSC_MASK (1<<ADSC_BIT)
+#define ADIF_BIT (4)
+#define ADIF_MASK (1<<ADIF_BIT)
+#define ADIE_BIT (3)
+#define ADIE_MASK (1<<ADIE_BIT)
+#define ADATE_BIT (5)
+#define ADATE_MASK (1<<ADATE_BIT)
+
+void adc_init(void);
+uint16_t get_adc_value(void);
+
 #endif /*DEVICE_C_H*/
\ No newline at end of file