/* ssd1306.c */
extern void sd_on(void);
extern void sd_doodle(void);
extern void sd_init(void);
/* rng.c */
extern uint8_t random_vector_generate(uint8_t *p_buff, uint8_t size);
extern void rng_init(void);
/* gt22l16a1y.c */
extern void gt_init(void);
extern void gt_read(uint32_t a, uint8_t *buf, size_t len);
/* main.c */
extern void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name);
extern int main(void);