Move source code to firmware directory

firmware/rtc.h

@@ -0,0 +1,33 @@
+#ifndef __RTC_H__
+#define __RTC_H__
+
+#define RTC_I2C_ADDR 0xA2
+
+#define SECOND 0x02
+#define MINUTE 0x03
+#define HOUR 0x04
+
+#define INT0_PORT PORTD
+#define INT0_DIR DDRD
+#define INT0_PIN PD2
+#define INT1_PORT PORTD
+#define INT1_DIR DDRD
+#define INT1_PIN PD3
+
+
+#define DEC_2_BCD(dec) ((((dec) / 10) << 4) | ((dec) % 10))
+#define BCD_2_DEC(bcd) (((((bcd) >> 4) & 0x0F) * 10) + ((bcd) & 0x0F))
+
+struct time 
+{
+  uint8_t hour;
+  uint8_t minute;
+  uint8_t second;
+};
+
+void rtc_int0_init(void);
+void rtc_int1_init(void);
+void rtc_set_time(uint8_t part, uint8_t value);
+struct time rtc_read_time(void);
+
+#endif