Add I2C communication. Start writing DMX TX. Break generation already implemented

include/dmx.h

@@ -0,0 +1,14 @@
+#ifndef _DMX_H_
+#define _DMX_H_
+
+#include <stdint.h>
+
+
+void dmx_init(uint8_t *data, uint32_t universe_length, GPIO_TypeDef *tx_port, uint8_t tx_pin,
+		uint16_t dmx_delay, uint16_t dmx_break_len, uint16_t break_pause);
+		
+void dmx_stream_start(void);
+
+void dmx_stream_stop(void);
+
+#endif /* _DMX_H_ */

include/i2c.h

@@ -0,0 +1,14 @@
+#ifndef _I2C_H_
+#define _I2C_H_
+
+#include <stdint.h>
+
+void i2c_init(void);
+
+void i2c_reset(void);
+
+int i2c_write(uint8_t i2c_addr, const uint8_t *data, uint8_t len);
+
+int i2c_read(uint8_t i2c_addr, uint8_t command, uint8_t *data, uint8_t len);
+
+#endif /* _I2C_H_ */