544 lines
17 KiB
C
544 lines
17 KiB
C
#include <furi_hal_version.h>
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#include <furi_hal_usb_i.h>
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#include <furi_hal_usb.h>
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#include <furi_hal_usb_hid.h>
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#include <furi.h>
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#include "usb.h"
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#include "usb_hid.h"
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#define HID_EP_IN 0x81
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#define HID_EP_SZ 0x10
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#define HID_INTERVAL 2
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#define HID_VID_DEFAULT 0x046D
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#define HID_PID_DEFAULT 0xC529
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struct HidIntfDescriptor {
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struct usb_interface_descriptor hid;
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struct usb_hid_descriptor hid_desc;
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struct usb_endpoint_descriptor hid_ep_in;
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};
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struct HidConfigDescriptor {
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struct usb_config_descriptor config;
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struct HidIntfDescriptor intf_0;
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} __attribute__((packed));
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enum HidReportId {
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ReportIdKeyboard = 1,
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ReportIdMouse = 2,
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ReportIdConsumer = 3,
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};
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/* HID report descriptor: keyboard + mouse + consumer control */
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static const uint8_t hid_report_desc[] = {
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// clang-format off
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_KEYBOARD),
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HID_COLLECTION(HID_APPLICATION_COLLECTION),
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HID_REPORT_ID(ReportIdKeyboard),
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// Keyboard report
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HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
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HID_USAGE_MINIMUM(HID_KEYBOARD_L_CTRL),
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HID_USAGE_MAXIMUM(HID_KEYBOARD_R_GUI),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(1),
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HID_REPORT_SIZE(1),
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HID_REPORT_COUNT(8),
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// Input - Modifier keys byte
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_COUNT(1),
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HID_REPORT_SIZE(8),
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// Input - Reserved byte
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HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_USAGE_PAGE(HID_PAGE_LED),
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HID_REPORT_COUNT(8),
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HID_REPORT_SIZE(1),
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HID_USAGE_MINIMUM(1),
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HID_USAGE_MAXIMUM(8),
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// Output - LEDs
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HID_OUTPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_COUNT(HID_KB_MAX_KEYS),
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HID_REPORT_SIZE(8),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(101),
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HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
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HID_USAGE_MINIMUM(0),
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HID_USAGE_MAXIMUM(101),
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// Input - Key codes
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HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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HID_END_COLLECTION,
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_MOUSE),
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HID_COLLECTION(HID_APPLICATION_COLLECTION),
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HID_USAGE(HID_DESKTOP_POINTER),
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HID_COLLECTION(HID_PHYSICAL_COLLECTION),
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HID_REPORT_ID(ReportIdMouse),
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// Mouse report
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HID_USAGE_PAGE(HID_PAGE_BUTTON),
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HID_USAGE_MINIMUM(1),
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HID_USAGE_MAXIMUM(3),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(1),
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HID_REPORT_COUNT(3),
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HID_REPORT_SIZE(1),
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// Input - Mouse keys
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_SIZE(1),
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HID_REPORT_COUNT(5),
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// Input - Mouse keys padding
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HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_X),
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HID_USAGE(HID_DESKTOP_Y),
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HID_USAGE(HID_DESKTOP_WHEEL),
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HID_LOGICAL_MINIMUM(-127),
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HID_LOGICAL_MAXIMUM(127),
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HID_REPORT_SIZE(8),
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HID_REPORT_COUNT(3),
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// Input - Mouse movement data (x, y, scroll)
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),
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HID_END_COLLECTION,
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HID_END_COLLECTION,
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HID_USAGE_PAGE(HID_PAGE_CONSUMER),
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HID_USAGE(HID_CONSUMER_CONTROL),
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HID_COLLECTION(HID_APPLICATION_COLLECTION),
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HID_REPORT_ID(ReportIdConsumer),
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// Consumer report
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HID_LOGICAL_MINIMUM(0),
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HID_RI_LOGICAL_MAXIMUM(16, 0x3FF),
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HID_USAGE_MINIMUM(0),
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HID_RI_USAGE_MAXIMUM(16, 0x3FF),
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HID_REPORT_COUNT(HID_CONSUMER_MAX_KEYS),
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HID_REPORT_SIZE(16),
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// Input - Consumer control keys
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HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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HID_END_COLLECTION,
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// clang-format on
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};
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/* Device descriptor */
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static struct usb_device_descriptor hid_device_desc = {
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.bLength = sizeof(struct usb_device_descriptor),
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.bDescriptorType = USB_DTYPE_DEVICE,
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.bcdUSB = VERSION_BCD(2, 0, 0),
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.bDeviceClass = USB_CLASS_PER_INTERFACE,
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.bDeviceSubClass = USB_SUBCLASS_NONE,
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.bDeviceProtocol = USB_PROTO_NONE,
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.bMaxPacketSize0 = USB_EP0_SIZE,
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.idVendor = HID_VID_DEFAULT,
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.idProduct = HID_PID_DEFAULT,
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.bcdDevice = VERSION_BCD(1, 0, 0),
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.iManufacturer = 0,
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.iProduct = 0,
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.iSerialNumber = 0,
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.bNumConfigurations = 1,
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};
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/* Device configuration descriptor */
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static const struct HidConfigDescriptor hid_cfg_desc = {
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.config =
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{
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.bLength = sizeof(struct usb_config_descriptor),
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.bDescriptorType = USB_DTYPE_CONFIGURATION,
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.wTotalLength = sizeof(struct HidConfigDescriptor),
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.bNumInterfaces = 1,
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.bConfigurationValue = 1,
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.iConfiguration = NO_DESCRIPTOR,
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.bmAttributes = USB_CFG_ATTR_RESERVED | USB_CFG_ATTR_SELFPOWERED,
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.bMaxPower = USB_CFG_POWER_MA(100),
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},
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.intf_0 =
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{
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.hid =
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{
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.bLength = sizeof(struct usb_interface_descriptor),
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.bDescriptorType = USB_DTYPE_INTERFACE,
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.bInterfaceNumber = 0,
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.bAlternateSetting = 0,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_HID,
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.bInterfaceSubClass = USB_HID_SUBCLASS_BOOT,
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.bInterfaceProtocol = USB_HID_PROTO_KEYBOARD,
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.iInterface = NO_DESCRIPTOR,
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},
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.hid_desc =
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{
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.bLength = sizeof(struct usb_hid_descriptor),
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.bDescriptorType = USB_DTYPE_HID,
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.bcdHID = VERSION_BCD(1, 0, 0),
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.bCountryCode = USB_HID_COUNTRY_NONE,
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.bNumDescriptors = 1,
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.bDescriptorType0 = USB_DTYPE_HID_REPORT,
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.wDescriptorLength0 = sizeof(hid_report_desc),
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},
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.hid_ep_in =
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{
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.bLength = sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DTYPE_ENDPOINT,
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.bEndpointAddress = HID_EP_IN,
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.bmAttributes = USB_EPTYPE_INTERRUPT,
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.wMaxPacketSize = HID_EP_SZ,
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.bInterval = HID_INTERVAL,
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},
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},
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};
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struct HidReportMouse {
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uint8_t report_id;
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uint8_t btn;
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int8_t x;
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int8_t y;
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int8_t wheel;
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} __attribute__((packed));
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struct HidReportKB {
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uint8_t report_id;
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struct {
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uint8_t mods;
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uint8_t reserved;
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uint8_t btn[HID_KB_MAX_KEYS];
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} boot;
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} __attribute__((packed));
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struct HidReportConsumer {
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uint8_t report_id;
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uint16_t btn[HID_CONSUMER_MAX_KEYS];
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} __attribute__((packed));
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struct HidReportLED {
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uint8_t report_id;
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uint8_t led_state;
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} __attribute__((packed));
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static struct HidReport {
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struct HidReportKB keyboard;
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struct HidReportMouse mouse;
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struct HidReportConsumer consumer;
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} __attribute__((packed)) hid_report;
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static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx);
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static void hid_deinit(usbd_device* dev);
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static void hid_on_wakeup(usbd_device* dev);
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static void hid_on_suspend(usbd_device* dev);
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FuriHalUsbInterface usb_hid = {
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.init = hid_init,
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.deinit = hid_deinit,
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.wakeup = hid_on_wakeup,
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.suspend = hid_on_suspend,
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.dev_descr = (struct usb_device_descriptor*)&hid_device_desc,
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.str_manuf_descr = NULL,
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.str_prod_descr = NULL,
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.str_serial_descr = NULL,
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.cfg_descr = (void*)&hid_cfg_desc,
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};
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static bool hid_send_report(uint8_t report_id);
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static usbd_respond hid_ep_config(usbd_device* dev, uint8_t cfg);
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static usbd_respond hid_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback);
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static usbd_device* usb_dev;
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static FuriSemaphore* hid_semaphore = NULL;
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static bool hid_connected = false;
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static HidStateCallback callback;
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static void* cb_ctx;
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static uint8_t led_state;
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static bool boot_protocol = false;
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bool furi_hal_hid_is_connected() {
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return hid_connected;
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}
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uint8_t furi_hal_hid_get_led_state() {
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return led_state;
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}
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void furi_hal_hid_set_state_callback(HidStateCallback cb, void* ctx) {
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if(callback != NULL) {
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if(hid_connected == true) callback(false, cb_ctx);
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}
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callback = cb;
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cb_ctx = ctx;
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if(callback != NULL) {
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if(hid_connected == true) callback(true, cb_ctx);
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}
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}
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bool furi_hal_hid_kb_press(uint16_t button) {
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for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
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if(hid_report.keyboard.boot.btn[key_nb] == 0) {
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hid_report.keyboard.boot.btn[key_nb] = button & 0xFF;
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break;
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}
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}
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hid_report.keyboard.boot.mods |= (button >> 8);
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return hid_send_report(ReportIdKeyboard);
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}
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bool furi_hal_hid_kb_release(uint16_t button) {
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for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
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if(hid_report.keyboard.boot.btn[key_nb] == (button & 0xFF)) {
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hid_report.keyboard.boot.btn[key_nb] = 0;
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break;
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}
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}
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hid_report.keyboard.boot.mods &= ~(button >> 8);
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return hid_send_report(ReportIdKeyboard);
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}
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bool furi_hal_hid_kb_release_all() {
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for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
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hid_report.keyboard.boot.btn[key_nb] = 0;
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}
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hid_report.keyboard.boot.mods = 0;
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return hid_send_report(ReportIdKeyboard);
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}
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bool furi_hal_hid_mouse_move(int8_t dx, int8_t dy) {
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hid_report.mouse.x = dx;
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hid_report.mouse.y = dy;
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bool state = hid_send_report(ReportIdMouse);
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hid_report.mouse.x = 0;
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hid_report.mouse.y = 0;
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return state;
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}
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bool furi_hal_hid_mouse_press(uint8_t button) {
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hid_report.mouse.btn |= button;
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return hid_send_report(ReportIdMouse);
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}
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bool furi_hal_hid_mouse_release(uint8_t button) {
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hid_report.mouse.btn &= ~button;
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return hid_send_report(ReportIdMouse);
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}
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bool furi_hal_hid_mouse_scroll(int8_t delta) {
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hid_report.mouse.wheel = delta;
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bool state = hid_send_report(ReportIdMouse);
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hid_report.mouse.wheel = 0;
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return state;
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}
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bool furi_hal_hid_consumer_key_press(uint16_t button) {
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for(uint8_t key_nb = 0; key_nb < HID_CONSUMER_MAX_KEYS; key_nb++) {
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if(hid_report.consumer.btn[key_nb] == 0) {
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hid_report.consumer.btn[key_nb] = button;
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break;
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}
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}
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return hid_send_report(ReportIdConsumer);
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}
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bool furi_hal_hid_consumer_key_release(uint16_t button) {
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for(uint8_t key_nb = 0; key_nb < HID_CONSUMER_MAX_KEYS; key_nb++) {
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if(hid_report.consumer.btn[key_nb] == button) {
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hid_report.consumer.btn[key_nb] = 0;
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break;
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}
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}
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return hid_send_report(ReportIdConsumer);
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}
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static void* hid_set_string_descr(char* str) {
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furi_assert(str);
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size_t len = strlen(str);
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struct usb_string_descriptor* dev_str_desc = malloc(len * 2 + 2);
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dev_str_desc->bLength = len * 2 + 2;
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dev_str_desc->bDescriptorType = USB_DTYPE_STRING;
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for(size_t i = 0; i < len; i++) dev_str_desc->wString[i] = str[i];
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return dev_str_desc;
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}
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static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx) {
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UNUSED(intf);
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FuriHalUsbHidConfig* cfg = (FuriHalUsbHidConfig*)ctx;
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if(hid_semaphore == NULL) hid_semaphore = furi_semaphore_alloc(1, 1);
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usb_dev = dev;
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hid_report.keyboard.report_id = ReportIdKeyboard;
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hid_report.mouse.report_id = ReportIdMouse;
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hid_report.consumer.report_id = ReportIdConsumer;
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usb_hid.dev_descr->iManufacturer = 0;
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usb_hid.dev_descr->iProduct = 0;
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usb_hid.str_manuf_descr = NULL;
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usb_hid.str_prod_descr = NULL;
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usb_hid.dev_descr->idVendor = HID_VID_DEFAULT;
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usb_hid.dev_descr->idProduct = HID_PID_DEFAULT;
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if(cfg != NULL) {
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usb_hid.dev_descr->idVendor = cfg->vid;
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usb_hid.dev_descr->idProduct = cfg->pid;
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if(cfg->manuf[0] != '\0') {
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usb_hid.str_manuf_descr = hid_set_string_descr(cfg->manuf);
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usb_hid.dev_descr->iManufacturer = UsbDevManuf;
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}
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if(cfg->product[0] != '\0') {
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usb_hid.str_prod_descr = hid_set_string_descr(cfg->product);
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usb_hid.dev_descr->iProduct = UsbDevProduct;
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}
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}
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usbd_reg_config(dev, hid_ep_config);
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usbd_reg_control(dev, hid_control);
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usbd_connect(dev, true);
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}
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static void hid_deinit(usbd_device* dev) {
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usbd_reg_config(dev, NULL);
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usbd_reg_control(dev, NULL);
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free(usb_hid.str_manuf_descr);
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free(usb_hid.str_prod_descr);
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}
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static void hid_on_wakeup(usbd_device* dev) {
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UNUSED(dev);
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if(!hid_connected) {
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hid_connected = true;
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if(callback != NULL) {
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callback(true, cb_ctx);
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}
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}
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}
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static void hid_on_suspend(usbd_device* dev) {
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UNUSED(dev);
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if(hid_connected) {
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hid_connected = false;
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furi_semaphore_release(hid_semaphore);
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if(callback != NULL) {
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callback(false, cb_ctx);
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}
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}
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}
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static bool hid_send_report(uint8_t report_id) {
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if((hid_semaphore == NULL) || (hid_connected == false)) return false;
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if((boot_protocol == true) && (report_id != ReportIdKeyboard)) return false;
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FuriStatus status = furi_semaphore_acquire(hid_semaphore, HID_INTERVAL * 2);
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if(status == FuriStatusErrorTimeout) {
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return false;
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}
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furi_check(status == FuriStatusOk);
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if(hid_connected == false) {
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return false;
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}
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if(boot_protocol == true) {
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usbd_ep_write(
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usb_dev, HID_EP_IN, &hid_report.keyboard.boot, sizeof(hid_report.keyboard.boot));
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} else {
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if(report_id == ReportIdKeyboard)
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usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.keyboard, sizeof(hid_report.keyboard));
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else if(report_id == ReportIdMouse)
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usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.mouse, sizeof(hid_report.mouse));
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else if(report_id == ReportIdConsumer)
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usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.consumer, sizeof(hid_report.consumer));
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}
|
|
return true;
|
|
}
|
|
|
|
static void hid_txrx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
|
|
UNUSED(dev);
|
|
if(event == usbd_evt_eptx) {
|
|
furi_semaphore_release(hid_semaphore);
|
|
} else if(boot_protocol == true) {
|
|
usbd_ep_read(usb_dev, ep, &led_state, sizeof(led_state));
|
|
} else {
|
|
struct HidReportLED leds;
|
|
usbd_ep_read(usb_dev, ep, &leds, sizeof(leds));
|
|
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_IN);
|
|
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_reg_endpoint(dev, HID_EP_IN, hid_txrx_ep_callback);
|
|
usbd_ep_write(dev, HID_EP_IN, 0, 0);
|
|
boot_protocol = false; /* BIOS will SET_PROTOCOL if it wants this */
|
|
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) {
|
|
UNUSED(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:
|
|
if(boot_protocol == true) {
|
|
dev->status.data_ptr = &hid_report.keyboard.boot;
|
|
dev->status.data_count = sizeof(hid_report.keyboard.boot);
|
|
} else {
|
|
dev->status.data_ptr = &hid_report;
|
|
dev->status.data_count = sizeof(hid_report);
|
|
}
|
|
return usbd_ack;
|
|
case USB_HID_SETPROTOCOL:
|
|
if(req->wValue == 0)
|
|
boot_protocol = true;
|
|
else if(req->wValue == 1)
|
|
boot_protocol = false;
|
|
else
|
|
return usbd_fail;
|
|
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.intf_0.hid_desc);
|
|
dev->status.data_count = sizeof(hid_cfg_desc.intf_0.hid_desc);
|
|
return usbd_ack;
|
|
case USB_DTYPE_HID_REPORT:
|
|
boot_protocol = false; /* BIOS does not read this */
|
|
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;
|
|
}
|