arduino - 使用 Arduino Leonardo 进行通用键盘模拟

Question

我正在尝试使用 Arduino Leonardo用于键盘模拟，因为这是其宣传的功能之一。我一直在玩 Leonardo，并根据 Blink 示例写了一个非常简单的草图。

// Pin 13 has an LED connected on most Arduino boards.
int led = 13;

// The setup routine runs once when you press reset:
void setup()
{
    // Initialize the digital pin as an output.
    pinMode(led, OUTPUT);
}

// The loop routine runs over and over again forever:
void loop()
{
    delay(5000);              // Wait for five seconds
    digitalWrite(led, HIGH);  // Turn the LED on (HIGH is the voltage level)
    delay(100);               // Wait for a secondA
    digitalWrite(led, LOW);   // Turn the LED off by making the voltage LOW
    Keyboard.write('A');      // Write an A using keyboard emulator
}

现在这个示例在我的 Windows XP 计算机上运行得很好。它被认为是通用的 HID键盘，每五秒就会输入一个“A”。

目标环境正在运行 DOS，因此据我所知，我需要让 native 上的 BIOS 识别 Arduino Leonardo，但事实并非如此，并且它不会在 DOS 中键入“A”。

我一直在修改 Leonardo 的 USB 设备描述符，试图使其尽可能与 Dell L100 匹配。我所做的修改没有帮助，我怀疑这是因为 Leonardo 是一个复合设备，它在同一个 USB 端口上公开串行通信、键盘模拟和鼠标模拟。 USB 描述符/配置的源代码可供编辑，位于:

• Arduino_Installation\hardware\arduino\cores\arduino\HID.cpp
• Arduino_Installation\hardware\arduino\cores\arduino\USBDesc.h
• Arduino_Installation\hardware\arduino\cores\arduino\USBCore.h
• Arduino_Installation\hardware\arduino\cores\arduino\USBCore.cpp

以下是 Leonardo USB 设备查看器的转储:

[Port3]  :  USB Composite Device

          ---===>Device Information<===---
English product name: "Arduino Leonardo"

ConnectionStatus:
Current Config Value:              0x01  -> Device Bus Speed: Full
Device Address:                    0x03
Open Pipes:                           4

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0010 = 0x10 bytes
bInterval:                         0x40

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x02  -> Direction: OUT - EndpointID: 2
bmAttributes:                      0x02  -> Bulk Transfer Type
wMaxPacketSize:                  0x0040 = 0x40 bytes
bInterval:                         0x00

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x83  -> Direction: IN - EndpointID: 3
bmAttributes:                      0x02  -> Bulk Transfer Type
wMaxPacketSize:                  0x0040 = 0x40 bytes
bInterval:                         0x00

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x84  -> Direction: IN - EndpointID: 4
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0040 = 0x40 bytes
bInterval:                         0x01

          ===>Device Descriptor<===
bLength:                           0x12
bDescriptorType:                   0x01
bcdUSB:                          0x0110
bDeviceClass:                      0x00
*!*ERROR: device class should be Multi-interface Function 0xEF
          When IAD descriptor is used
bDeviceSubClass:                   0x00
*!*ERROR: device SubClass should be USB Common Sub Class 2
          When IAD descriptor is used
bDeviceProtocol:                   0x00
*!*ERROR: device Protocol should be USB IAD Protocol 1
          When IAD descriptor is used
bMaxPacketSize0:                   0x40 = (64) Bytes
idVendor:                        0x2341 = Vendor ID not listed with USB.org as of 03-19-2008
idProduct:                       0x8036
bcdDevice:                       0x0100
iManufacturer:                     0x01
     English (United States)  "Arduino LLC"
iProduct:                          0x02
     English (United States)  "Arduino Leonardo"
iSerialNumber:                     0x00
bNumConfigurations:                0x01

          ===>Configuration Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x02
wTotalLength:                    0x0064  -> Validated
bNumInterfaces:                    0x03
bConfigurationValue:               0x01
iConfiguration:                    0x00
bmAttributes:                      0x80  -> Bus Powered
MaxPower:                          0xFA = 500 mA

          ===>IAD Descriptor<===
bLength:                           0x08
bDescriptorType:                   0x0B
bFirstInterface:                   0x00
bInterfaceCount:                   0x02
bFunctionClass:                    0x02  -> This is Communications (CDC Control) USB Device Interface Class
bFunctionSubClass:                 0x01
bFunctionProtocol:                 0x01
iFunction:                         0x00

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x00
bAlternateSetting:                 0x00
bNumEndpoints:                     0x01
bInterfaceClass:                   0x02  -> This is Communications (CDC Control) USB Device Interface Class
bInterfaceSubClass:                0x01
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x00
  -> This is a Communications (CDC Control) USB Device Interface Class

          ===>Descriptor Hex Dump<===
bLength:                           0x05
bDescriptorType:                   0x24
05 24 00 10 01
  -> This is a Communications (CDC Control) USB Device Interface Class

          ===>Descriptor Hex Dump<===
bLength:                           0x05
bDescriptorType:                   0x24
05 24 01 01 01
  -> This is a Communications (CDC Control) USB Device Interface Class

          ===>Descriptor Hex Dump<===
bLength:                           0x04
bDescriptorType:                   0x24
04 24 02 06
  -> This is a Communications (CDC Control) USB Device Interface Class

          ===>Descriptor Hex Dump<===
bLength:                           0x05
bDescriptorType:                   0x24
05 24 06 00 01

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0010 = 0x10 bytes
bInterval:                         0x40

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x01
bAlternateSetting:                 0x00
bNumEndpoints:                     0x02
bInterfaceClass:                   0x0A  -> This is a CDC Data USB Device Interface Class
bInterfaceSubClass:                0x01
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x00

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x02  -> Direction: OUT - EndpointID: 2
bmAttributes:                      0x02  -> Bulk Transfer Type
wMaxPacketSize:                  0x0040 = 0x40 bytes
bInterval:                         0x00

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x83  -> Direction: IN - EndpointID: 3
bmAttributes:                      0x02  -> Bulk Transfer Type
wMaxPacketSize:                  0x0040 = 0x40 bytes
bInterval:                         0x00

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x02
bAlternateSetting:                 0x00
bNumEndpoints:                     0x01
bInterfaceClass:                   0x03  -> HID Interface Class
bInterfaceSubClass:                0x01
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x00

          ===>HID Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x21
bcdHID:                          0x0101
bCountryCode:                      0x00
bNumDescriptors:                   0x01
bDescriptorType:                   0x22
wDescriptorLength:               0x0065

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x84  -> Direction: IN - EndpointID: 4
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0040 = 0x40 bytes
bInterval:                         0x01

如何让 BIOS 将这个 Leonardo 识别为通用键盘？

Answer 1

Arduino不支持启动协议(protocol)。我已经开始使用Teensy (与 Arduino 兼容)，并且运行良好。