+/* ccdbg-command.c */
+void
+ccdbg_debug_mode(struct ccdbg *dbg);
+
+void
+ccdbg_reset(struct ccdbg *dbg);
+
+uint8_t
+ccdbg_read_status(struct ccdbg *dbg);
+
+uint8_t
+ccdbg_rd_config(struct ccdbg *dbg);
+
+uint16_t
+ccdbg_get_chip_id(struct ccdbg *dbg);
+
+/* ccdbg-io.c */
+void
+ccdbg_quarter_clock(struct ccdbg *dbg);
+
+void
+ccdbg_half_clock(struct ccdbg *dbg);
+
+int
+ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value);
+
+uint8_t
+ccdbg_read(struct ccdbg *dbg);
+
+struct ccdbg *
+ccdbg_open(char *file);
+
+void
+ccdbg_close(struct ccdbg *dbg);
+
+void
+ccdbg_clock_1_0(struct ccdbg *dbg);
+
+void
+ccdbg_clock_0_1(struct ccdbg *dbg);
+
+void
+ccdbg_write_bit(struct ccdbg *dbg, uint8_t bit);
+
+void
+ccdbg_write_byte(struct ccdbg *dbg, uint8_t byte);
+
+uint8_t
+ccdbg_read_bit(struct ccdbg *dbg);
+
+uint8_t
+ccdbg_read_byte(struct ccdbg *dbg);
+
+void
+ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
+
+uint8_t
+ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
+
+uint16_t
+ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
+
+/* cp-usb.c */
+void
+cp_usb_init(struct ccdbg *dbg);
+
+void
+cp_usb_fini(struct ccdbg *dbg);
+
+void
+cp_usb_write(struct ccdbg *dbg, uint8_t mask, uint8_t value);
+
+uint8_t
+cp_usb_read(struct ccdbg *dbg);
+