src/tusb_edpt_handler.h

/**
 * Copyright (c) 2023 Raspberry Pi (Trading) Ltd.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef TUSB_EDPT_HANDLER_H
#define TUSB_EDPT_HANDLER_H

#include "tusb.h"

#include "device/usbd_pvt.h"
#include "DAP_config.h"

#define DAP_INTERFACE_SUBCLASS 0x00
#define DAP_INTERFACE_PROTOCOL 0x00

typedef struct {
	uint8_t data[DAP_PACKET_COUNT][DAP_PACKET_SIZE];
	volatile uint32_t wptr;
	volatile uint32_t rptr;
	volatile bool wasEmpty;
	volatile bool wasFull;
} buffer_t;

extern TaskHandle_t dap_taskhandle, tud_taskhandle;

/* Main DAP loop */
void dap_thread(void *ptr);

/* Endpoint Handling */
void dap_edpt_init(void);
uint16_t dap_edpt_open(uint8_t __unused rhport, tusb_desc_interface_t const *itf_desc, uint16_t max_len);
bool dap_edpt_control_xfer_cb(uint8_t __unused rhport, uint8_t stage,  tusb_control_request_t const *request);
bool dap_edpt_xfer_cb(uint8_t __unused rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);

/* Helper Functions */
bool buffer_full(buffer_t *buffer);
bool buffer_empty(buffer_t *buffer);

#endif