flipperzero-firmware/firmware/targets/f6/furi_hal/furi_hal_usb_hid.c

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#include "furi_hal_version.h"
#include "furi_hal_usb_i.h"
#include "furi_hal_usb.h"
#include "furi_hal_usb_hid.h"
#include <furi.h>
#include "usb.h"
#include "usb_hid.h"
#include "hid_usage_desktop.h"
#include "hid_usage_button.h"
#include "hid_usage_keyboard.h"
#include "hid_usage_led.h"
#define HID_EP_IN 0x81
#define HID_EP_OUT 0x01
#define HID_EP_SZ 0x10
#define HID_KB_MAX_KEYS 6
#define HID_CONSUMER_MAX_KEYS 2
#define HID_PAGE_CONSUMER 0x0C
#define HID_CONSUMER_CONTROL 0x01
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_in;
struct usb_endpoint_descriptor hid_ep_out;
};
struct HidConfigDescriptor {
struct usb_config_descriptor config;
struct HidIadDescriptor iad_0;
} __attribute__((packed));
enum HidReportId {
ReportIdKeyboard = 1,
ReportIdMouse = 2,
ReportIdConsumer = 3,
};
/* HID report: keyboard+mouse */
static const uint8_t hid_report_desc[] = {
HID_USAGE_PAGE(HID_PAGE_DESKTOP),
HID_USAGE(HID_DESKTOP_KEYBOARD),
HID_COLLECTION(HID_APPLICATION_COLLECTION),
HID_REPORT_ID(ReportIdKeyboard),
HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
HID_USAGE_MINIMUM(HID_KEYBOARD_L_CTRL),
HID_USAGE_MAXIMUM(HID_KEYBOARD_R_GUI),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(1),
HID_REPORT_SIZE(1),
HID_REPORT_COUNT(8),
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_REPORT_COUNT(1),
HID_REPORT_SIZE(8),
HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_USAGE_PAGE(HID_PAGE_LED),
HID_REPORT_COUNT(8),
HID_REPORT_SIZE(1),
HID_USAGE_MINIMUM(1),
HID_USAGE_MAXIMUM(8),
HID_OUTPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_REPORT_COUNT(HID_KB_MAX_KEYS),
HID_REPORT_SIZE(8),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(101),
HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
HID_USAGE_MINIMUM(0),
HID_USAGE_MAXIMUM(101),
HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
HID_END_COLLECTION,
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_REPORT_ID(ReportIdMouse),
HID_USAGE_PAGE(HID_PAGE_BUTTON),
HID_USAGE_MINIMUM(1),
HID_USAGE_MAXIMUM(3),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(1),
HID_REPORT_COUNT(3),
HID_REPORT_SIZE(1),
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_REPORT_SIZE(1),
HID_REPORT_COUNT(5),
HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_USAGE_PAGE(HID_PAGE_DESKTOP),
HID_USAGE(HID_DESKTOP_X),
HID_USAGE(HID_DESKTOP_Y),
HID_USAGE(HID_DESKTOP_WHEEL),
HID_LOGICAL_MINIMUM(-127),
HID_LOGICAL_MAXIMUM(127),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(3),
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),
HID_END_COLLECTION,
HID_END_COLLECTION,
HID_USAGE_PAGE(HID_PAGE_CONSUMER),
HID_USAGE(HID_CONSUMER_CONTROL),
HID_COLLECTION(HID_APPLICATION_COLLECTION),
HID_REPORT_ID(ReportIdConsumer),
HID_LOGICAL_MINIMUM(0),
HID_RI_LOGICAL_MAXIMUM(16, 0x3FF),
HID_USAGE_MINIMUM(0),
HID_RI_USAGE_MAXIMUM(16, 0x3FF),
HID_REPORT_COUNT(HID_CONSUMER_MAX_KEYS),
HID_REPORT_SIZE(16),
HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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 = 2,
.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_in =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DTYPE_ENDPOINT,
.bEndpointAddress = HID_EP_IN,
.bmAttributes = USB_EPTYPE_INTERRUPT,
.wMaxPacketSize = HID_EP_SZ,
.bInterval = 10,
},
.hid_ep_out =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DTYPE_ENDPOINT,
.bEndpointAddress = HID_EP_OUT,
.bmAttributes = USB_EPTYPE_INTERRUPT,
.wMaxPacketSize = HID_EP_SZ,
.bInterval = 10,
},
},
};
struct HidReportMouse {
uint8_t report_id;
uint8_t btn;
int8_t x;
int8_t y;
int8_t wheel;
} __attribute__((packed));
struct HidReportKB {
uint8_t report_id;
uint8_t mods;
uint8_t reserved;
uint8_t btn[HID_KB_MAX_KEYS];
} __attribute__((packed));
struct HidReportConsumer {
uint8_t report_id;
uint16_t btn[HID_CONSUMER_MAX_KEYS];
} __attribute__((packed));
struct HidReportLED {
uint8_t report_id;
uint8_t led_state;
} __attribute__((packed));
static struct HidReport {
struct HidReportKB keyboard;
struct HidReportMouse mouse;
struct HidReportConsumer consumer;
} __attribute__((packed)) hid_report;
static void hid_init(usbd_device* dev, 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 bool hid_send_report(uint8_t report_id);
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;
static osSemaphoreId_t hid_semaphore = NULL;
static bool hid_connected = false;
static HidStateCallback callback;
static void* cb_ctx;
static uint8_t led_state;
bool furi_hal_hid_is_connected() {
return hid_connected;
}
uint8_t furi_hal_hid_get_led_state() {
return led_state;
}
void furi_hal_hid_set_state_callback(HidStateCallback cb, void* ctx) {
if(callback != NULL) {
if(hid_connected == true) callback(false, cb_ctx);
}
callback = cb;
cb_ctx = ctx;
if(callback != NULL) {
if(hid_connected == true) callback(true, cb_ctx);
}
}
bool furi_hal_hid_kb_press(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
if(hid_report.keyboard.btn[key_nb] == 0) {
hid_report.keyboard.btn[key_nb] = button & 0xFF;
break;
}
}
hid_report.keyboard.mods |= (button >> 8);
return hid_send_report(ReportIdKeyboard);
}
bool furi_hal_hid_kb_release(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
if(hid_report.keyboard.btn[key_nb] == (button & 0xFF)) {
hid_report.keyboard.btn[key_nb] = 0;
break;
}
}
hid_report.keyboard.mods &= ~(button >> 8);
return hid_send_report(ReportIdKeyboard);
}
bool furi_hal_hid_kb_release_all() {
for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
hid_report.keyboard.btn[key_nb] = 0;
}
hid_report.keyboard.mods = 0;
return hid_send_report(ReportIdKeyboard);
}
bool furi_hal_hid_mouse_move(int8_t dx, int8_t dy) {
hid_report.mouse.x = dx;
hid_report.mouse.y = dy;
bool state = hid_send_report(ReportIdMouse);
hid_report.mouse.x = 0;
hid_report.mouse.y = 0;
return state;
}
bool furi_hal_hid_mouse_press(uint8_t button) {
hid_report.mouse.btn |= button;
return hid_send_report(ReportIdMouse);
}
bool furi_hal_hid_mouse_release(uint8_t button) {
hid_report.mouse.btn &= ~button;
return hid_send_report(ReportIdMouse);
}
bool furi_hal_hid_mouse_scroll(int8_t delta) {
hid_report.mouse.wheel = delta;
bool state = hid_send_report(ReportIdMouse);
hid_report.mouse.wheel = 0;
return state;
}
bool furi_hal_hid_consumer_key_press(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_CONSUMER_MAX_KEYS; key_nb++) {
if(hid_report.consumer.btn[key_nb] == 0) {
hid_report.consumer.btn[key_nb] = button;
break;
}
}
return hid_send_report(ReportIdConsumer);
}
bool furi_hal_hid_consumer_key_release(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_CONSUMER_MAX_KEYS; key_nb++) {
if(hid_report.consumer.btn[key_nb] == button) {
hid_report.consumer.btn[key_nb] = 0;
break;
}
}
return hid_send_report(ReportIdConsumer);
}
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, UsbInterface* intf) {
if(hid_semaphore == NULL) hid_semaphore = osSemaphoreNew(1, 1, NULL);
usb_dev = dev;
hid_report.keyboard.report_id = ReportIdKeyboard;
hid_report.mouse.report_id = ReportIdMouse;
hid_report.consumer.report_id = ReportIdConsumer;
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) {
if(hid_connected == false) {
hid_connected = true;
if(callback != NULL) callback(true, cb_ctx);
}
}
static void hid_on_suspend(usbd_device* dev) {
if(hid_connected == true) {
hid_connected = false;
osSemaphoreRelease(hid_semaphore);
if(callback != NULL) callback(false, cb_ctx);
}
}
static bool hid_send_report(uint8_t report_id) {
if((hid_semaphore == NULL) || (hid_connected == false)) return false;
furi_check(osSemaphoreAcquire(hid_semaphore, osWaitForever) == osOK);
if(hid_connected == true) {
if(report_id == ReportIdKeyboard)
usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.keyboard, sizeof(hid_report.keyboard));
else if(report_id == ReportIdMouse)
usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.mouse, sizeof(hid_report.mouse));
else if(report_id == ReportIdConsumer)
usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.consumer, sizeof(hid_report.consumer));
return true;
}
return false;
}
static void hid_txrx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
if(event == usbd_evt_eptx) {
osSemaphoreRelease(hid_semaphore);
} else {
struct HidReportLED leds;
usbd_ep_read(usb_dev, ep, &leds, 2);
led_state = leds.led_state;
}
}
/* 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_EP_OUT);
usbd_ep_deconfig(dev, HID_EP_IN);
usbd_reg_endpoint(dev, HID_EP_OUT, 0);
usbd_reg_endpoint(dev, HID_EP_IN, 0);
return usbd_ack;
case 1:
/* configuring device */
usbd_ep_config(dev, HID_EP_IN, USB_EPTYPE_INTERRUPT, HID_EP_SZ);
usbd_ep_config(dev, HID_EP_OUT, USB_EPTYPE_INTERRUPT, HID_EP_SZ);
usbd_reg_endpoint(dev, HID_EP_IN, hid_txrx_ep_callback);
usbd_reg_endpoint(dev, HID_EP_OUT, hid_txrx_ep_callback);
usbd_ep_write(dev, HID_EP_IN, 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;
dev->status.data_count = sizeof(hid_report);
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;
}