uint16_t cli_getc(void);
uint16_t cli_getc_cecho(void);
uint8_t cli_getsn(char* s, uint16_t n);
+uint8_t cli_getsn_cecho(char* s, uint16_t n);
void cli_putstr(const char* s);
void cli_putstr_P(PGM_P s);
void cli_hexdump(const void* data, uint16_t length);