control.h

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/*
 * Copyright (C) 2019 Koen Zandberg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once


#define USBUS_CONTROL_EP_IN_REQUIRED_NUMOF  1

#define USBUS_CONTROL_EP_OUT_REQUIRED_NUMOF 1
 
#include "usb/usbus.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    size_t start;                   
    size_t cur;                     
    size_t len;                     
    size_t transferred;             
    size_t reqlen;                  
} usbus_control_slicer_t;

typedef struct {

    usbus_handler_t handler;

    usb_setup_t setup;

    usbus_control_request_state_t control_request_state;

    usbus_control_slicer_t slicer;

    size_t received_len;

    usbdev_ep_t *out;

    usbdev_ep_t *in;

    usbdev_ep_buf_t out_buf[CONFIG_USBUS_EP0_SIZE];

    usbdev_ep_buf_t in_buf[CONFIG_USBUS_EP0_SIZE];
} usbus_control_handler_t;

void usbus_control_init(usbus_t *usbus, usbus_control_handler_t *handler);

size_t usbus_control_slicer_put_bytes(usbus_t *usbus, const uint8_t *buf,
                                      size_t len);

size_t usbus_control_slicer_put_char(usbus_t *usbus, char c);

void usbus_control_slicer_ready(usbus_t *usbus);

int usbus_control_slicer_nextslice(usbus_t *usbus);

uint8_t *usbus_control_get_out_data(usbus_t *usbus, size_t *len);
 
#ifdef __cplusplus
}
#endif