/* * Copyright (c) 2022 HPMicro * * SPDX-License-Identifier: BSD-3-Clause * */ #include "usbd_core.h" #include "usbd_hid.h" /*!< hidraw in endpoint */ #define HIDRAW_IN_EP 0x81 #ifdef CONFIG_USB_HS #define HIDRAW_IN_EP_SIZE 1024 #define HIDRAW_IN_INTERVAL 4 #else #define HIDRAW_IN_EP_SIZE 64 #define HIDRAW_IN_INTERVAL 10 #endif /*!< hidraw out endpoint */ #define HIDRAW_OUT_EP 0x02 #ifdef CONFIG_USB_HS #define HIDRAW_OUT_EP_SIZE 1024 #define HIDRAW_OUT_EP_INTERVAL 4 #else #define HIDRAW_OUT_EP_SIZE 64 #define HIDRAW_OUT_EP_INTERVAL 10 #endif /*!< config descriptor size */ #define USB_HID_CONFIG_DESC_SIZ (9 + 9 + 9 + 7 + 7) /*!< custom hid report descriptor size */ #define HID_CUSTOM_REPORT_DESC_SIZE 38 /*!< global descriptor */ static const uint8_t hid_descriptor[] = { USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01), USB_CONFIG_DESCRIPTOR_INIT(USB_HID_CONFIG_DESC_SIZ, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), /************** Descriptor of Custom interface *****************/ 0x09, /* bLength: Interface Descriptor size */ USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType: Interface descriptor type */ 0x00, /* bInterfaceNumber: Number of Interface */ 0x00, /* bAlternateSetting: Alternate setting */ 0x02, /* bNumEndpoints */ 0x03, /* bInterfaceClass: HID */ 0x01, /* bInterfaceSubClass : 1=BOOT, 0=no boot */ 0x00, /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */ 0, /* iInterface: Index of string descriptor */ /******************** Descriptor of Custom HID ********************/ 0x09, /* bLength: HID Descriptor size */ HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */ 0x11, /* bcdHID: HID Class Spec release number */ 0x01, 0x00, /* bCountryCode: Hardware target country */ 0x01, /* bNumDescriptors: Number of HID class descriptors to follow */ 0x22, /* bDescriptorType */ HID_CUSTOM_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */ 0x00, /******************** Descriptor of Custom in endpoint ********************/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */ HIDRAW_IN_EP, /* bEndpointAddress: Endpoint Address (IN) */ 0x03, /* bmAttributes: Interrupt endpoint */ WBVAL(HIDRAW_IN_EP_SIZE), /* wMaxPacketSize: 4 Byte max */ HIDRAW_IN_INTERVAL, /* bInterval: Polling Interval */ /******************** Descriptor of Custom out endpoint ********************/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */ HIDRAW_OUT_EP, /* bEndpointAddress: Endpoint Address (IN) */ 0x03, /* bmAttributes: Interrupt endpoint */ WBVAL(HIDRAW_OUT_EP_SIZE), /* wMaxPacketSize: 4 Byte max */ HIDRAW_OUT_EP_INTERVAL, /* bInterval: Polling Interval */ /* 73 */ /* * string0 descriptor */ USB_LANGID_INIT(USBD_LANGID_STRING), /* * string1 descriptor */ 0x14, /* bLength */ USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */ 'C', 0x00, /* wcChar0 */ 'h', 0x00, /* wcChar1 */ 'e', 0x00, /* wcChar2 */ 'r', 0x00, /* wcChar3 */ 'r', 0x00, /* wcChar4 */ 'y', 0x00, /* wcChar5 */ 'U', 0x00, /* wcChar6 */ 'S', 0x00, /* wcChar7 */ 'B', 0x00, /* wcChar8 */ /* * string2 descriptor */ 0x26, /* bLength */ USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */ 'C', 0x00, /* wcChar0 */ 'h', 0x00, /* wcChar1 */ 'e', 0x00, /* wcChar2 */ 'r', 0x00, /* wcChar3 */ 'r', 0x00, /* wcChar4 */ 'y', 0x00, /* wcChar5 */ 'U', 0x00, /* wcChar6 */ 'S', 0x00, /* wcChar7 */ 'B', 0x00, /* wcChar8 */ ' ', 0x00, /* wcChar9 */ 'H', 0x00, /* wcChar10 */ 'I', 0x00, /* wcChar11 */ 'D', 0x00, /* wcChar12 */ ' ', 0x00, /* wcChar13 */ 'D', 0x00, /* wcChar14 */ 'E', 0x00, /* wcChar15 */ 'M', 0x00, /* wcChar16 */ 'O', 0x00, /* wcChar17 */ /* * string3 descriptor */ 0x16, /* bLength */ USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */ '2', 0x00, /* wcChar0 */ '0', 0x00, /* wcChar1 */ '2', 0x00, /* wcChar2 */ '2', 0x00, /* wcChar3 */ '1', 0x00, /* wcChar4 */ '2', 0x00, /* wcChar5 */ '3', 0x00, /* wcChar6 */ '4', 0x00, /* wcChar7 */ '5', 0x00, /* wcChar8 */ '6', 0x00, /* wcChar9 */ #ifdef CONFIG_USB_HS /* * device qualifier descriptor */ 0x0a, USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00, 0x40, 0x01, 0x00, #endif 0x00 }; /*!< custom hid report descriptor */ static const uint8_t hid_custom_report_desc[HID_CUSTOM_REPORT_DESC_SIZE] = { #ifdef CONFIG_USB_HS /* USER CODE BEGIN 0 */ 0x06, 0x00, 0xff, /* USAGE_PAGE (Vendor Defined Page 1) */ 0x09, 0x01, /* USAGE (Vendor Usage 1) */ 0xa1, 0x01, /* COLLECTION (Application) */ 0x85, 0x02, /* REPORT ID (0x02) */ 0x09, 0x02, /* USAGE (Vendor Usage 1) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x25, 0xff, /*LOGICAL_MAXIMUM (255) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x96, 0xff, 0x03, /* REPORT_COUNT (63) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ /* <___________________________________________________> */ 0x85, 0x01, /* REPORT ID (0x01) */ 0x09, 0x03, /* USAGE (Vendor Usage 1) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x25, 0xff, /* LOGICAL_MAXIMUM (255) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x96, 0xff, 0x03, /* REPORT_COUNT (63) */ 0x91, 0x02, /* OUTPUT (Data,Var,Abs) */ /* USER CODE END 0 */ 0xC0 /* END_COLLECTION */ #else /* USER CODE BEGIN 0 */ 0x06, 0x00, 0xff, /* USAGE_PAGE (Vendor Defined Page 1) */ 0x09, 0x01, /* USAGE (Vendor Usage 1) */ 0xa1, 0x01, /* COLLECTION (Application) */ 0x85, 0x02, /* REPORT ID (0x02) */ 0x09, 0x01, /* USAGE (Vendor Usage 1) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x26, 0xff, 0x00, /* LOGICAL_MAXIMUM (255) */ 0x95, 0x40 - 1, /* REPORT_COUNT (63) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ /* <___________________________________________________> */ 0x85, 0x01, /* REPORT ID (0x01) */ 0x09, 0x01, /* USAGE (Vendor Usage 1) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x26, 0xff, 0x00, /* LOGICAL_MAXIMUM (255) */ 0x95, 0x40 - 1, /* REPORT_COUNT (63) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x91, 0x02, /* OUTPUT (Data,Var,Abs) */ /* USER CODE END 0 */ 0xC0 /* END_COLLECTION */ #endif }; USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[HIDRAW_OUT_EP_SIZE]; USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t send_buffer[HIDRAW_IN_EP_SIZE]; #define HID_STATE_IDLE 0 #define HID_STATE_BUSY 1 /*!< hid state ! Data can be sent only when state is idle */ static volatile uint8_t custom_state; static void usbd_event_handler(uint8_t busid, uint8_t event) { switch (event) { case USBD_EVENT_RESET: break; case USBD_EVENT_CONNECTED: break; case USBD_EVENT_DISCONNECTED: break; case USBD_EVENT_RESUME: break; case USBD_EVENT_SUSPEND: break; case USBD_EVENT_CONFIGURED: /* setup first out ep read transfer */ usbd_ep_start_read(busid, HIDRAW_OUT_EP, read_buffer, HIDRAW_OUT_EP_SIZE); break; case USBD_EVENT_SET_REMOTE_WAKEUP: break; case USBD_EVENT_CLR_REMOTE_WAKEUP: break; default: break; } } static void usbd_hid_custom_in_callback(uint8_t busid, uint8_t ep, uint32_t nbytes) { (void)busid; (void)ep; USB_LOG_RAW("actual in len:%d\r\n", nbytes); custom_state = HID_STATE_IDLE; } static void usbd_hid_custom_out_callback(uint8_t busid, uint8_t ep, uint32_t nbytes) { USB_LOG_RAW("actual out len:%d\r\n", nbytes); usbd_ep_start_read(busid, ep, read_buffer, HIDRAW_IN_EP_SIZE); read_buffer[0] = 0x02; /* IN: report id */ usbd_ep_start_write(busid, HIDRAW_IN_EP, read_buffer, nbytes); } static struct usbd_endpoint custom_in_ep = { .ep_cb = usbd_hid_custom_in_callback, .ep_addr = HIDRAW_IN_EP }; static struct usbd_endpoint custom_out_ep = { .ep_cb = usbd_hid_custom_out_callback, .ep_addr = HIDRAW_OUT_EP }; /* function ------------------------------------------------------------------*/ /** * @brief hid custom init * @pre none * @param[in] none * @retval none */ struct usbd_interface intf0; void hid_custom_init(uint8_t busid, uint32_t reg_base) { usbd_desc_register(busid, hid_descriptor); usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_custom_report_desc, HID_CUSTOM_REPORT_DESC_SIZE)); usbd_add_endpoint(busid, &custom_in_ep); usbd_add_endpoint(busid, &custom_out_ep); usbd_initialize(busid, reg_base, usbd_event_handler); }