55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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#ifndef _USB_H_
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#define _USB_H_
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#include <stdint.h>
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#include <stdbool.h>
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enum control_state {CONTROL_SETUP, CONTROL_DATA_TX, CONTROL_DATA_RX, CONTROL_STATUS_RX, CONTROL_STATUS_TX, CONTROL_NOT_HANDLED};
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struct usb_descriptor_entry {
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uint16_t w_index;
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uint16_t w_value;
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const uint8_t *descriptor;
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uint32_t size;
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};
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enum usb_ep_type {
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EP_CONTROL,
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EP_BULK,
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EP_ISOCHRON,
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EP_INTERRUPT
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};
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struct setup_packet {
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uint8_t bm_req_type;
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uint8_t b_request;
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uint16_t w_value;
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uint16_t w_index;
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uint16_t w_length;
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};
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struct usb_callbacks {
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void (*ep_rx_data_callback)(uint8_t endpoint, const uint8_t *buffer, uint32_t len);
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enum control_state (*ep_rx_setup_received_callback)(uint8_t endpoint, const struct setup_packet *setup_pkg);
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void (*ep_tx_complete_callback)(uint8_t endpoint);
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void (*usb_sof_callback)(void);
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void (*usb_reset_callback)(void);
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void (*usb_configured_callback)(uint16_t config_idx);
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};
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void usb_init(const struct usb_callbacks *callbacks);
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void usb_enable(const struct usb_descriptor_entry *descriptors);
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void usb_endpoint_send_status_stage(uint8_t endpoint);
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void usb_endpoint_stall(uint8_t endpoint, bool tx_dir, bool rx_dir);
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void usb_endpoint_config(enum usb_ep_type type, uint8_t epnum, bool rx, bool tx);
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int usb_endpoint_prepare_receive(uint8_t endpoint, uint8_t *buffer, uint32_t bufflen);
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int usb_endpoint_send(uint8_t endpoint, const uint8_t *data, uint32_t len);
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#endif /* _USB_H_ */
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