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https://gitee.com/Vancouver2017/luban-lite.git
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286 lines
9.6 KiB
C
286 lines
9.6 KiB
C
/**
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* @file usbd_hid.c
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* @brief
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*
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* Copyright (c) 2022 sakumisu
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "usbd_core.h"
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#include "usbd_hid.h"
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#define HID_STATE_IDLE 0
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#define HID_STATE_BUSY 1
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struct usbd_hid_cfg_priv {
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const uint8_t *hid_descriptor;
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const uint8_t *hid_report_descriptor;
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uint32_t hid_report_descriptor_len;
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uint8_t current_intf_num;
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uint8_t hid_state;
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uint8_t report;
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uint8_t idle_state;
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uint8_t protocol;
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uint8_t (*get_report_callback)(uint8_t report_id, uint8_t report_type);
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void (*set_report_callback)(uint8_t report_id, uint8_t report_type, uint8_t *report, uint8_t report_len);
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uint8_t (*get_idle_callback)(uint8_t report_id);
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void (*set_idle_callback)(uint8_t report_id, uint8_t duration);
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void (*set_protocol_callback)(uint8_t protocol);
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uint8_t (*get_protocol_callback)(void);
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usb_slist_t list;
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} usbd_hid_cfg[4];
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static usb_slist_t usbd_hid_class_head = USB_SLIST_OBJECT_INIT(usbd_hid_class_head);
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static void usbd_hid_reset(void)
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{
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usb_slist_t *i;
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usb_slist_for_each(i, &usbd_hid_class_head)
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{
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struct usbd_hid_cfg_priv *hid_intf = usb_slist_entry(i, struct usbd_hid_cfg_priv, list);
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hid_intf->hid_state = HID_STATE_IDLE;
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hid_intf->report = 0;
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hid_intf->idle_state = 0;
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hid_intf->protocol = 0;
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}
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}
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static int hid_custom_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
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{
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USB_LOG_DBG("HID Custom request: "
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"bRequest 0x%02x\r\n",
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setup->bRequest);
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if (((setup->bmRequestType & USB_REQUEST_DIR_MASK) == USB_REQUEST_DIR_IN) &&
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setup->bRequest == USB_REQUEST_GET_DESCRIPTOR) {
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uint8_t value = (uint8_t)(setup->wValue >> 8);
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uint8_t intf_num = (uint8_t)setup->wIndex;
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struct usbd_hid_cfg_priv *current_hid_intf = NULL;
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usb_slist_t *i;
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usb_slist_for_each(i, &usbd_hid_class_head)
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{
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struct usbd_hid_cfg_priv *hid_intf = usb_slist_entry(i, struct usbd_hid_cfg_priv, list);
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if (hid_intf->current_intf_num == intf_num) {
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current_hid_intf = hid_intf;
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break;
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}
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}
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if (current_hid_intf == NULL) {
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return -2;
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}
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switch (value) {
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case HID_DESCRIPTOR_TYPE_HID:
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USB_LOG_INFO("get HID Descriptor\r\n");
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*data = (uint8_t *)current_hid_intf->hid_descriptor;
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*len = current_hid_intf->hid_descriptor[0];
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break;
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case HID_DESCRIPTOR_TYPE_HID_REPORT:
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USB_LOG_INFO("get Report Descriptor\r\n");
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*data = (uint8_t *)current_hid_intf->hid_report_descriptor;
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*len = current_hid_intf->hid_report_descriptor_len;
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break;
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case HID_DESCRIPTOR_TYPE_HID_PHYSICAL:
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USB_LOG_INFO("get PHYSICAL Descriptor\r\n");
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break;
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default:
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return -2;
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}
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return 0;
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}
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return -1;
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}
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static int hid_class_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
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{
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USB_LOG_DBG("HID Class request: "
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"bRequest 0x%02x\r\n",
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setup->bRequest);
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struct usbd_hid_cfg_priv *current_hid_intf = NULL;
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usb_slist_t *i;
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usb_slist_for_each(i, &usbd_hid_class_head)
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{
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struct usbd_hid_cfg_priv *hid_intf = usb_slist_entry(i, struct usbd_hid_cfg_priv, list);
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uint8_t intf_num = (uint8_t)setup->wIndex;
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if (hid_intf->current_intf_num == intf_num) {
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current_hid_intf = hid_intf;
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break;
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}
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}
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if (current_hid_intf == NULL) {
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return -2;
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}
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switch (setup->bRequest) {
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case HID_REQUEST_GET_REPORT:
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if (current_hid_intf->get_report_callback)
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current_hid_intf->report = current_hid_intf->get_report_callback(LO_BYTE(setup->wValue), HI_BYTE(setup->wValue)); /*report id ,report type*/
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*data = (uint8_t *)¤t_hid_intf->report;
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*len = 1;
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break;
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case HID_REQUEST_GET_IDLE:
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if (current_hid_intf->get_idle_callback)
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current_hid_intf->idle_state = current_hid_intf->get_idle_callback(LO_BYTE(setup->wValue));
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*data = (uint8_t *)¤t_hid_intf->idle_state;
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*len = 1;
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break;
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case HID_REQUEST_GET_PROTOCOL:
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if (current_hid_intf->get_protocol_callback)
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current_hid_intf->protocol = current_hid_intf->get_protocol_callback();
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*data = (uint8_t *)¤t_hid_intf->protocol;
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*len = 1;
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break;
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case HID_REQUEST_SET_REPORT:
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if (current_hid_intf->set_report_callback)
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current_hid_intf->set_report_callback(LO_BYTE(setup->wValue), HI_BYTE(setup->wValue), *data, *len); /*report id ,report type,report,report len*/
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current_hid_intf->report = **data;
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break;
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case HID_REQUEST_SET_IDLE:
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if (current_hid_intf->set_idle_callback)
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current_hid_intf->set_idle_callback(LO_BYTE(setup->wValue), HI_BYTE(setup->wIndex)); /*report id ,duration*/
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current_hid_intf->idle_state = HI_BYTE(setup->wIndex);
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break;
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case HID_REQUEST_SET_PROTOCOL:
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if (current_hid_intf->set_protocol_callback)
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current_hid_intf->set_protocol_callback(LO_BYTE(setup->wValue)); /*protocol*/
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current_hid_intf->protocol = LO_BYTE(setup->wValue);
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break;
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default:
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USB_LOG_WRN("Unhandled HID Class bRequest 0x%02x\r\n", setup->bRequest);
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return -1;
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}
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return 0;
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}
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static void hid_notify_handler(uint8_t event, void *arg)
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{
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switch (event) {
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case USBD_EVENT_RESET:
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usbd_hid_reset();
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break;
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default:
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break;
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}
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}
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void usbd_hid_add_interface(usbd_class_t *devclass, usbd_interface_t *intf)
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{
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static usbd_class_t *last_class = NULL;
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static uint8_t hid_num = 0;
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if (last_class != devclass) {
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last_class = devclass;
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usbd_class_register(devclass);
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}
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intf->class_handler = hid_class_request_handler;
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intf->custom_handler = hid_custom_request_handler;
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intf->vendor_handler = NULL;
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intf->notify_handler = hid_notify_handler;
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usbd_class_add_interface(devclass, intf);
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usbd_hid_cfg[hid_num].current_intf_num = intf->intf_num;
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usb_slist_add_tail(&usbd_hid_class_head, &usbd_hid_cfg[hid_num].list);
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hid_num++;
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}
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void usbd_hid_descriptor_register(uint8_t intf_num, const uint8_t *desc)
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{
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// usbd_hid_cfg.hid_descriptor = desc;
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}
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void usbd_hid_report_descriptor_register(uint8_t intf_num, const uint8_t *desc, uint32_t desc_len)
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{
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usb_slist_t *i;
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usb_slist_for_each(i, &usbd_hid_class_head)
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{
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struct usbd_hid_cfg_priv *hid_intf = usb_slist_entry(i, struct usbd_hid_cfg_priv, list);
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if (hid_intf->current_intf_num == intf_num) {
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hid_intf->hid_report_descriptor = desc;
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hid_intf->hid_report_descriptor_len = desc_len;
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return;
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}
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}
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}
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void usbd_hid_set_request_callback(uint8_t intf_num,
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uint8_t (*get_report_callback)(uint8_t report_id, uint8_t report_type),
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void (*set_report_callback)(uint8_t report_id, uint8_t report_type, uint8_t *report, uint8_t report_len),
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uint8_t (*get_idle_callback)(uint8_t report_id),
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void (*set_idle_callback)(uint8_t report_id, uint8_t duration),
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void (*set_protocol_callback)(uint8_t protocol),
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uint8_t (*get_protocol_callback)(void))
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{
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usb_slist_t *i;
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usb_slist_for_each(i, &usbd_hid_class_head)
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{
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struct usbd_hid_cfg_priv *hid_intf = usb_slist_entry(i, struct usbd_hid_cfg_priv, list);
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if (hid_intf->current_intf_num == intf_num) {
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if (get_report_callback)
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hid_intf->get_report_callback = get_report_callback;
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if (set_report_callback)
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hid_intf->set_report_callback = set_report_callback;
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if (get_idle_callback)
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hid_intf->get_idle_callback = get_idle_callback;
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if (set_idle_callback)
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hid_intf->set_idle_callback = set_idle_callback;
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if (set_protocol_callback)
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hid_intf->set_protocol_callback = set_protocol_callback;
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if (get_protocol_callback)
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hid_intf->get_protocol_callback = get_protocol_callback;
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return;
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}
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}
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}
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void usbd_hid_reset_state(void)
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{
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// usbd_hid_cfg.hid_state = HID_STATE_IDLE;
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}
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void usbd_hid_send_report(uint8_t ep, uint8_t *data, uint8_t len)
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{
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// if(usbd_hid_cfg.hid_state == HID_STATE_IDLE)
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// {
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// usbd_hid_cfg.hid_state = HID_STATE_BUSY;
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// usbd_ep_write(ep, data, len, NULL);
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// }
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}
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