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/*
* Copyright (c) 2022 HPMicro
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include "usbd_core.h"
#include "usbd_hid.h"
#define HIDRAW_IN_EP 0x81
#define HIDRAW_OUT_EP 0x02
#define USBD_VID 0xffff
#define USBD_PID 0xffff
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
/*!< config descriptor size */
#define USB_CONFIG_SIZE (9 + 9 + 9 + 7 + 7)
/*!< custom hid report descriptor size */
#define HID_CUSTOM_REPORT_DESC_SIZE 38
#ifdef CONFIG_USB_HS
#define HID_MAX_MPS 1024
#define HIDRAW_IN_INTERVAL 1
#else
#define HID_MAX_MPS 64
#define HIDRAW_IN_INTERVAL 1
#endif
static const uint8_t device_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01)
};
static const uint8_t config_descriptor[] = {
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
HID_CUSTOM_INOUT_DESCRIPTOR_INIT(0x00, 0x01, HID_CUSTOM_REPORT_DESC_SIZE, HIDRAW_OUT_EP, HIDRAW_IN_EP, HID_MAX_MPS, HIDRAW_IN_INTERVAL),
};
static const uint8_t device_quality_descriptor[] = {
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x00,
0x00,
0x00,
0x40,
0x00,
0x00,
};
static const char *string_descriptors[] = {
(const char[]){ 0x09, 0x04 }, /* Langid */
"CherryUSB", /* Manufacturer */
"CherryUSB HID DEMO", /* Product */
"2022123456", /* Serial Number */
};
static const uint8_t *device_descriptor_callback(uint8_t speed)
{
return device_descriptor;
}
static const uint8_t *config_descriptor_callback(uint8_t speed)
{
return config_descriptor;
}
static const uint8_t *device_quality_descriptor_callback(uint8_t speed)
{
return device_quality_descriptor;
}
static const char *string_descriptor_callback(uint8_t speed, uint8_t index)
{
if (index >= (sizeof(string_descriptors) / sizeof(char *))) {
return NULL;
}
return string_descriptors[index];
}
const struct usb_descriptor hid_descriptor = {
.device_descriptor_callback = device_descriptor_callback,
.config_descriptor_callback = config_descriptor_callback,
.device_quality_descriptor_callback = device_quality_descriptor_callback,
.string_descriptor_callback = string_descriptor_callback
};
/*!< 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[HID_MAX_MPS];
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t send_buffer[HID_MAX_MPS];
#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, HID_MAX_MPS);
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", (unsigned int)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", (unsigned int)nbytes);
usbd_ep_start_read(busid, ep, read_buffer, HID_MAX_MPS);
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, uintptr_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);
}
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