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/* main.c */
extern int main(void);
/* cdcacm.c */
extern ring_t cdcacm_rx_ring;
extern ring_t cdcacm_tx_ring;
extern const struct usb_interface_descriptor comm_iface;
extern const struct usb_interface_descriptor data_iface;
extern const struct usb_iface_assoc_descriptor cdc_iface_assoc;
extern enum usbd_request_return_codes cdcacm_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, uint8_t **buf, uint16_t *len, usbd_control_complete_callback *complete);
extern void cdcacm_tick(void);
extern int cdcacm_write(char *ptr, int len);
extern void cdcacm_set_config(usbd_device *usbd_dev, uint16_t wValue);
extern void cdcacm_rings_init(void);
/* dfu.c */
extern const struct usb_dfu_descriptor dfu_function;
extern const struct usb_interface_descriptor dfu_iface;
extern const struct usb_iface_assoc_descriptor dfu_iface_assoc;
extern enum usbd_request_return_codes dfu_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, uint8_t **buf, uint16_t *len, usbd_control_complete_callback *complete);
/* i2c_bb.c */
extern void i2c_bb_init(void);
extern void i2c_bb_poll(void);
/* vuart.c */
extern uint8_t vuart_read(unsigned reg);
extern void vuart_write(unsigned reg, uint8_t val);
/* ring.c */
extern void ring_init(ring_t *r, uint8_t *buf, size_t len);
extern int ring_write_byte(ring_t *r, uint8_t c);
extern int ring_empty(ring_t *r);
extern int ring_read_byte(ring_t *r, uint8_t *c);
extern int ring_write(ring_t *r, uint8_t *buf, size_t len);
/* usart.c */
extern ring_t usart_rx_ring;
extern ring_t usart_tx_ring;
extern void usart1_isr(void);
extern void usart_kick(void);
extern int _write(int file, char *ptr, int len);
extern void usart_init(void);
/* i2c_hw.c */
extern void i2c1_er_isr(void);
extern void i2c1_ev_isr(void);
extern void i2c_hw_init(void);
/* ticker.c */
extern unsigned led1;
extern unsigned led2;
extern void delay_us(uint32_t d);
extern void sys_tick_handler(void);
extern void ticker_init(void);
/* ddc.c */
extern uint8_t ddc_read(uint8_t v);
/* dummy_kb.c */
extern const struct usb_interface_descriptor dummy_kb_iface;
extern const struct usb_iface_assoc_descriptor dummy_kb_iface_assoc;
/* usb.c */
extern uint8_t usbd_control_buffer[128];
extern usbd_device *usb_device;
extern void usb_hp_can_tx_isr(void);
extern void usb_lp_can_rx0_isr(void);
extern void usb_init(void);
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