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#include "furi-hal-version.h"
#include "furi-hal-usb_i.h"
#include <furi.h>
#include "usb.h"
#include "usb_hid.h"
#include "hid_usage_desktop.h"
#include "hid_usage_button.h"
#define HID_RIN_EP 0x81
#define HID_RIN_SZ 0x10
struct HidIadDescriptor {
struct usb_iad_descriptor hid_iad;
struct usb_interface_descriptor hid;
struct usb_hid_descriptor hid_desc;
struct usb_endpoint_descriptor hid_ep;
};
struct HidConfigDescriptor {
struct usb_config_descriptor config;
struct HidIadDescriptor iad_0;
} __attribute__((packed));
/* HID mouse report desscriptor. 2 axis 5 buttons */
static const uint8_t hid_report_desc[] = {
HID_USAGE_PAGE(HID_PAGE_DESKTOP),
HID_USAGE(HID_DESKTOP_MOUSE),
HID_COLLECTION(HID_APPLICATION_COLLECTION),
HID_USAGE(HID_DESKTOP_POINTER),
HID_COLLECTION(HID_PHYSICAL_COLLECTION),
HID_USAGE(HID_DESKTOP_X),
HID_USAGE(HID_DESKTOP_Y),
HID_LOGICAL_MINIMUM(-127),
HID_LOGICAL_MAXIMUM(127),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(2),
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE ),
HID_USAGE_PAGE(HID_PAGE_BUTTON),
HID_USAGE_MINIMUM(1),
HID_USAGE_MAXIMUM(5),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(1),
HID_REPORT_SIZE(1),
HID_REPORT_COUNT(5),
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE ),
HID_REPORT_SIZE(1),
HID_REPORT_COUNT(3),
HID_INPUT(HID_IOF_CONSTANT),
HID_END_COLLECTION,
HID_END_COLLECTION,
};
static const struct usb_string_descriptor dev_manuf_desc = USB_STRING_DESC("Logitech");
static const struct usb_string_descriptor dev_prod_desc = USB_STRING_DESC("USB Receiver");
static const struct usb_string_descriptor dev_serial_desc = USB_STRING_DESC("1234567890");
/* Device descriptor */
static const struct usb_device_descriptor hid_device_desc = {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = USB_DTYPE_DEVICE,
.bcdUSB = VERSION_BCD(2,0,0),
.bDeviceClass = USB_CLASS_IAD,
.bDeviceSubClass = USB_SUBCLASS_IAD,
.bDeviceProtocol = USB_PROTO_IAD,
.bMaxPacketSize0 = USB_EP0_SIZE,
.idVendor = 0x046d,
.idProduct = 0xc529,
.bcdDevice = VERSION_BCD(1,0,0),
.iManufacturer = UsbDevManuf,
.iProduct = UsbDevProduct,
.iSerialNumber = UsbDevSerial,
.bNumConfigurations = 1,
};
/* Device configuration descriptor */
static const struct HidConfigDescriptor hid_cfg_desc = {
.config = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = USB_DTYPE_CONFIGURATION,
.wTotalLength = sizeof(struct HidConfigDescriptor),
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = NO_DESCRIPTOR,
.bmAttributes = USB_CFG_ATTR_RESERVED | USB_CFG_ATTR_SELFPOWERED,
.bMaxPower = USB_CFG_POWER_MA(100),
},
.iad_0 = {
.hid_iad = {
.bLength = sizeof(struct usb_iad_descriptor),
.bDescriptorType = USB_DTYPE_INTERFASEASSOC,
.bFirstInterface = 0,
.bInterfaceCount = 1,
.bFunctionClass = USB_CLASS_PER_INTERFACE,
.bFunctionSubClass = USB_SUBCLASS_NONE,
.bFunctionProtocol = USB_PROTO_NONE,
.iFunction = NO_DESCRIPTOR,
},
.hid = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DTYPE_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = USB_HID_SUBCLASS_NONBOOT,
.bInterfaceProtocol = USB_HID_PROTO_NONBOOT,
.iInterface = NO_DESCRIPTOR,
},
.hid_desc = {
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = USB_DTYPE_HID,
.bcdHID = VERSION_BCD(1,0,0),
.bCountryCode = USB_HID_COUNTRY_NONE,
.bNumDescriptors = 1,
.bDescriptorType0 = USB_DTYPE_HID_REPORT,
.wDescriptorLength0 = sizeof(hid_report_desc),
},
.hid_ep = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DTYPE_ENDPOINT,
.bEndpointAddress = HID_RIN_EP,
.bmAttributes = USB_EPTYPE_INTERRUPT,
.wMaxPacketSize = HID_RIN_SZ,
.bInterval = 50,
},
},
};
static struct {
int8_t x;
int8_t y;
uint8_t buttons;
} __attribute__((packed)) hid_report_data;
static void hid_init(usbd_device* dev, struct UsbInterface* intf);
static void hid_deinit(usbd_device *dev);
static void hid_on_wakeup(usbd_device *dev);
static void hid_on_suspend(usbd_device *dev);
static usbd_respond hid_ep_config (usbd_device *dev, uint8_t cfg);
static usbd_respond hid_control (usbd_device *dev, usbd_ctlreq *req, usbd_rqc_callback *callback);
static usbd_device* usb_dev;
struct UsbInterface usb_hid = {
.init = hid_init,
.deinit = hid_deinit,
.wakeup = hid_on_wakeup,
.suspend = hid_on_suspend,
.dev_descr = (struct usb_device_descriptor*)&hid_device_desc,
.str_manuf_descr = (void*)&dev_manuf_desc,
.str_prod_descr = (void*)&dev_prod_desc,
.str_serial_descr = (void*)&dev_serial_desc,
.cfg_descr = (void*)&hid_cfg_desc,
};
static void hid_init(usbd_device* dev, struct UsbInterface* intf) {
usb_dev = dev;
usbd_reg_config(dev, hid_ep_config);
usbd_reg_control(dev, hid_control);
usbd_connect(dev, true);
}
static void hid_deinit(usbd_device *dev) {
usbd_reg_config(dev, NULL);
usbd_reg_control(dev, NULL);
}
static void hid_on_wakeup(usbd_device *dev) {
}
static void hid_on_suspend(usbd_device *dev) {
}
/* HID mouse IN endpoint callback */
static void hid_mouse_move(usbd_device *dev, uint8_t event, uint8_t ep) {
static uint8_t t = 0;
if (t < 0x10) {
hid_report_data.x = 1;
hid_report_data.y = 0;
} else if (t < 0x20) {
hid_report_data.x = 1;
hid_report_data.y = 1;
} else if (t < 0x30) {
hid_report_data.x = 0;
hid_report_data.y = 1;
} else if (t < 0x40) {
hid_report_data.x = -1;
hid_report_data.y = 1;
} else if (t < 0x50) {
hid_report_data.x = -1;
hid_report_data.y = 0;
} else if (t < 0x60) {
hid_report_data.x = -1;
hid_report_data.y = -1;
} else if (t < 0x70) {
hid_report_data.x = 0;
hid_report_data.y = -1;
} else {
hid_report_data.x = 1;
hid_report_data.y = -1;
}
t = (t + 1) & 0x7F;
usbd_ep_write(dev, ep, &hid_report_data, sizeof(hid_report_data));
}
/* Configure endpoints */
static usbd_respond hid_ep_config (usbd_device *dev, uint8_t cfg) {
switch (cfg) {
case 0:
/* deconfiguring device */
usbd_ep_deconfig(dev, HID_RIN_EP);
usbd_reg_endpoint(dev, HID_RIN_EP, 0);
return usbd_ack;
case 1:
/* configuring device */
usbd_ep_config(dev, HID_RIN_EP, USB_EPTYPE_INTERRUPT, HID_RIN_SZ);
usbd_reg_endpoint(dev, HID_RIN_EP, hid_mouse_move);
usbd_ep_write(dev, HID_RIN_EP, 0, 0);
return usbd_ack;
default:
return usbd_fail;
}
}
/* Control requests handler */
static usbd_respond hid_control (usbd_device *dev, usbd_ctlreq *req, usbd_rqc_callback *callback) {
/* HID control requests */
if (((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) == (USB_REQ_INTERFACE | USB_REQ_CLASS)
&& req->wIndex == 0 ) {
switch (req->bRequest) {
case USB_HID_SETIDLE:
return usbd_ack;
case USB_HID_GETREPORT:
dev->status.data_ptr = &hid_report_data;
dev->status.data_count = sizeof(hid_report_data);
return usbd_ack;
default:
return usbd_fail;
}
}
if (((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) == (USB_REQ_INTERFACE | USB_REQ_STANDARD)
&& req->wIndex == 0
&& req->bRequest == USB_STD_GET_DESCRIPTOR) {
switch (req->wValue >> 8) {
case USB_DTYPE_HID:
dev->status.data_ptr = (uint8_t*)&(hid_cfg_desc.iad_0.hid_desc);
dev->status.data_count = sizeof(hid_cfg_desc.iad_0.hid_desc);
return usbd_ack;
case USB_DTYPE_HID_REPORT:
dev->status.data_ptr = (uint8_t*)hid_report_desc;
dev->status.data_count = sizeof(hid_report_desc);
return usbd_ack;
default:
return usbd_fail;
}
}
return usbd_fail;
}
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