Implement leds

epicardium/epicardium.h

@@ -12,4 +12,7 @@ API(API_UART_WRITE, void epic_uart_write_str(char*str, intptr_t length));
 #define API_UART_READ  0x2
 API(API_UART_READ, char epic_uart_read_chr(void));
 
+#define API_LEDS_SET  0x3
+API(API_LEDS_SET, void epic_leds_set(int led, uint8_t r, uint8_t g, uint8_t b));
+
 #endif /* _EPICARDIUM_H */