7 /* HELPER SUBROUTINES DECLARATIONS */
8 static void start_condition();
9 static void stop_condition();
10 static int ack_recv();
11 static int ack10_recv();
15 extern void tm1637_init();
16 extern int set_grid(uint8_t offset, char value, bool dot);
17 extern int set_display(bool on, uint8_t degree);
19 extern void tm1637_example();