usb.h

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#ifndef PHAL_G4_USB_H
#define PHAL_G4_USB_H
 
#include <stdint.h>
 
static constexpr uint8_t PHAL_USB_CONTROL_ENDPOINT = 0U;
 
static constexpr uint8_t PHAL_USB_DATA_ENDPOINT = 1U;
 
static constexpr uint16_t PHAL_USB_PACKET_SIZE_BYTES = 64U;
 
typedef enum : uint8_t {
    PHAL_USB_ENDPOINT_DIRECTION_OUT = 0U, 
    PHAL_USB_ENDPOINT_DIRECTION_IN = 1U, 
} PHAL_USB_EndpointDirection_t;
 
typedef struct {
    uint8_t endpoint; 
    PHAL_USB_EndpointDirection_t direction; 
    bool setup; 
} PHAL_USB_TransferEvent_t;
 
typedef struct {
    bool transfer; 
    union {
        PHAL_USB_TransferEvent_t transfer_data; 
    };
} PHAL_USB_Event_t;
 
void PHAL_USB_callback(const PHAL_USB_Event_t *event);
 
bool PHAL_USB_init(void);
 
bool PHAL_USB_deinit(void);
 
bool PHAL_USB_connect(void);
 
bool PHAL_USB_setAddress(uint8_t address);
 
bool PHAL_USB_stall(uint8_t endpoint, PHAL_USB_EndpointDirection_t direction);
 
bool PHAL_USB_write(uint8_t endpoint, const void *source, uint16_t length_bytes);
 
bool PHAL_USB_read(uint8_t endpoint,
                   void *destination,
                   uint16_t destination_capacity,
                   uint16_t *received_length);
 
uint16_t PHAL_USB_getFrameNumber(void);
 
#endif // PHAL_G4_USB_H