CherryUSB/class/printer/usbd_printer.c

/**
 * @file usbd_printer.h
 * @brief
 *
 * Copyright (c) 2022 sakumisu
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 */
#include "usbd_core.h"
#include "usbd_printer.h"

/* Device data structure */
struct printer_cfg_priv {
    uint8_t *device_id;
    uint8_t port_status;
} usbd_printer_cfg;

/**
 * @brief Handler called for Class requests not handled by the USB stack.
 *
 * @param setup    Information about the request to execute.
 * @param len       Size of the buffer.
 * @param data      Buffer containing the request result.
 *
 * @return  0 on success, negative errno code on fail.
 */
static int printer_class_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
    USB_LOG_DBG("Printer Class request: "
                "bRequest 0x%02x\r\n",
                setup->bRequest);

    switch (setup->bRequest) {
        case PRINTER_REQUEST_GET_DEVICE_ID:

            break;
        case PRINTER_REQUEST_GET_PORT_SATTUS:

            break;
        case PRINTER_REQUEST_SOFT_RESET:

            break;
        default:
            USB_LOG_WRN("Unhandled Printer Class bRequest 0x%02x\r\n", setup->bRequest);
            return -1;
    }

    return 0;
}

static void printer_notify_handler(uint8_t event, void *arg)
{
    switch (event) {
        case USBD_EVENT_RESET:
            break;

        default:
            break;
    }
}

void usbd_printer_add_interface(usbd_class_t *devclass, usbd_interface_t *intf)
{
    static usbd_class_t *last_class = NULL;

    if (last_class != devclass) {
        last_class = devclass;
        usbd_class_register(devclass);
    }

    intf->class_handler = printer_class_request_handler;
    intf->custom_handler = NULL;
    intf->vendor_handler = NULL;
    intf->notify_handler = printer_notify_handler;

    usbd_class_add_interface(devclass, intf);
}