8 years ago.

Its possible to run at same time USBKeyboard and USBSerial?

Hi Samuel,

I need to run at same time an HID Class (keyboard) and a CDC class (serial port, virtual com on PC side). It's possible to implement with your USB stack?

Thanks,

Samuel Ramirez

Question relating to:

3 Answers

8 years ago.

Hi Chris,

Thanks for your reply!

I compiled and imported the binary file of your `USBSerialKeyboard_Example` to my mbed board but I just can see ath the PC side the virtual COM port but I don't see the HID class running an ''emulated" keyboard.

Is that correct?

Regards,

Samuel

Accepted Answer

Hey Samuel, The keyboard should look like any other usb keyboard, have you connected it up to the correct usb pins? There should be 2 usb serial ports too if you have it connected correctly and plugged in as normal.

posted by Chris Pepper 01 Apr 2013
7 years, 1 month ago.

Has anyone looked at this library and example further?

With the example as-downloaded, the keyboard does not show up under Windows7 with a FRDM-KL25Z but the serial port does.

Here is the USB descriptor dump when it's plugged in:

descriptor dump

Information for device CDC DEVICE (VID=0x1F00 PID=0x2012): 

Connection Information:
------------------------------
Connection status: Device connected
Device actual bus speed: Full 
Device is hub: No
Device adress: 0x0006
Current configuration value: 0x01
Number of open pipes: 5

Device Descriptor:
------------------------------
0x12	bLength
0x01	bDescriptorType
0x0110	bcdUSB
0xEF	bDeviceClass   (Miscellaneous device)
0x02	bDeviceSubClass   
0x01	bDeviceProtocol   
0x40	bMaxPacketSize0   (64 Bytes)
0x1F00	idVendor
0x2012	idProduct
0x0100	bcdDevice
0x01	iManufacturer
0x02	iProduct
0x03	iSerialNumber
0x01	bNumConfigurations

Configuration Descriptor:
------------------------------
0x09	bLength
0x02	bDescriptorType
0x006B	wTotalLength
0x03	bNumInterfaces
0x01	bConfigurationValue
0x00	iConfiguration
0x80	bmAttributes   (Bus-powered Device)
0x32	bMaxPower   (100 mA)

Interface Association Descriptor:
------------------------------
0x08	bLength
0x0B	bDescriptorType
0x00	bFirstInterface
0x02	bInterfaceCount
0x02	bFunctionClass   (Communication Device Class)
0x02	bFunctionSubClass   (Abstract Control Model)
0x01	bFunctionProtocol   (ITU-T V.250)
0x00	iFunction

Interface Descriptor:
------------------------------
0x09	bLength
0x04	bDescriptorType
0x00	bInterfaceNumber
0x00	bAlternateSetting
0x01	bNumEndPoints
0x02	bInterfaceClass   (Communication Device Class)
0x02	bInterfaceSubClass   (Abstract Control Model)
0x01	bInterfaceProtocol   (ITU-T V.250)
0x00	iInterface

CDC Header Functional Descriptor:
------------------------------
0x05	bFunctionalLength
0x24	bDescriptorType
0x00	bDescriptorSubtype
0x0110	bcdCDC

CDC Call Management Functional Descriptor:
------------------------------
0x05	bFunctionalLength
0x24	bDescriptorType
0x01	bDescriptorSubtype
0x03	bmCapabilities
0x01	bDataInterface

CDC Abstract Control Management Functional Descriptor:
------------------------------
0x04	bFunctionalLength
0x24	bDescriptorType
0x02	bDescriptorSubtype
0x06	bmCapabilities

CDC Union Functional Descriptor:
------------------------------
0x05	bFunctionalLength
0x24	bDescriptorType
0x06	bDescriptorSubtype
0x00	bControlInterface
0x01	bSubordinateInterface(0)

Endpoint Descriptor:
------------------------------
0x07	bLength
0x05	bDescriptorType
0x81	bEndpointAddress   (IN Endpoint)
0x03	bmAttributes	(Transfer: Interrupt / Synch: None / Usage: Data)
0x0040	wMaxPacketSize   (64 Bytes) 
0x10	bInterval

Interface Descriptor:
------------------------------
0x09	bLength
0x04	bDescriptorType
0x01	bInterfaceNumber
0x00	bAlternateSetting
0x02	bNumEndPoints
0x0A	bInterfaceClass   (CDC Data)
0x00	bInterfaceSubClass   
0x00	bInterfaceProtocol   
0x00	iInterface

Endpoint Descriptor:
------------------------------
0x07	bLength
0x05	bDescriptorType
0x82	bEndpointAddress   (IN Endpoint)
0x02	bmAttributes	(Transfer: Bulk / Synch: None / Usage: Data)
0x0040	wMaxPacketSize   (64 Bytes) 
0x00	bInterval

Endpoint Descriptor:
------------------------------
0x07	bLength
0x05	bDescriptorType
0x02	bEndpointAddress   (OUT Endpoint)
0x02	bmAttributes	(Transfer: Bulk / Synch: None / Usage: Data)
0x0040	wMaxPacketSize   (64 Bytes) 
0x00	bInterval

Interface Descriptor:
------------------------------
0x09	bLength
0x04	bDescriptorType
0x02	bInterfaceNumber
0x00	bAlternateSetting
0x02	bNumEndPoints
0x03	bInterfaceClass   (Human Interface Device Class)
0x01	bInterfaceSubClass   
0x01	bInterfaceProtocol   
0x00	iInterface

HID Descriptor:
------------------------------
0x09	bLength
0x21	bDescriptorType
0x0111	bcdHID
0x00	bCountryCode
0x01	bNumDescriptors
0x22	bDescriptorType   (Report descriptor)
0x0068	bDescriptorLength

Endpoint Descriptor:
------------------------------
0x07	bLength
0x05	bDescriptorType
0x81	bEndpointAddress   (IN Endpoint)
0x03	bmAttributes	(Transfer: Interrupt / Synch: None / Usage: Data)
0x0040	wMaxPacketSize   (64 Bytes) 
0x01	bInterval

Endpoint Descriptor:
------------------------------
0x07	bLength
0x05	bDescriptorType
0x01	bEndpointAddress   (OUT Endpoint)
0x03	bmAttributes	(Transfer: Interrupt / Synch: None / Usage: Data)
0x0040	wMaxPacketSize   (64 Bytes) 
0x01	bInterval

String Descriptor Table
--------------------------------
Index  LANGID  String
0x00   0x0000  0x0009 
0x01   0x0009  "mbed.org"
0x02   0x0009  "CDC DEVICE"
0x03   0x0009  "0123456789"
0x04   0x0009  "01"
0x05   0x0009  "CDC"
0x10   0x0009  "	"
0x11   0x0009  "mbed.org"
0x12   0x0009  "CDC DEVICE"
0x13   0x0009  "0123456789"
0x14   0x0009  "01"
0x15   0x0009  "CDC"
0x20   0x0009  "	"
0x21   0x0009  "mbed.org"
0x22   0x0009  "CDC DEVICE"
0x23   0x0009  "0123456789"
0x24   0x0009  "01"
0x25   0x0009  "CDC"
0x30   0x0009  "	"
0x31   0x0009  "mbed.org"
0x32   0x0009  "CDC DEVICE"
0x33   0x0009  "0123456789"
0x34   0x0009  "01"
0x35   0x0009  "CDC"
0x40   0x0009  "	"
0x41   0x0009  "mbed.org"
0x42   0x0009  "CDC DEVICE"
0x43   0x0009  "0123456789"
0x44   0x0009  "01"
0x45   0x0009  "CDC"
0x50   0x0009  "	"
0x51   0x0009  "mbed.org"
0x52   0x0009  "CDC DEVICE"
0x53   0x0009  "0123456789"
0x54   0x0009  "01"
0x55   0x0009  "CDC"
0x60   0x0009  "	"
0x61   0x0009  "mbed.org"
0x62   0x0009  "CDC DEVICE"
0x63   0x0009  "0123456789"
0x64   0x0009  "01"
0x65   0x0009  "CDC"
0x70   0x0009  "	"
0x71   0x0009  "mbed.org"
0x72   0x0009  "CDC DEVICE"
0x73   0x0009  "0123456789"
0x74   0x0009  "01"
0x75   0x0009  "CDC"
0x80   0x0009  "	"
0x81   0x0009  "mbed.org"
0x82   0x0009  "CDC DEVICE"
0x83   0x0009  "0123456789"
0x84   0x0009  "01"
0x85   0x0009  "CDC"
0x90   0x0009  "	"
0x91   0x0009  "mbed.org"
0x92   0x0009  "CDC DEVICE"
0x93   0x0009  "0123456789"
0x94   0x0009  "01"
0x95   0x0009  "CDC"
0xA0   0x0009  "	"
0xA1   0x0009  "mbed.org"
0xA2   0x0009  "CDC DEVICE"
0xA3   0x0009  "0123456789"
0xA4   0x0009  "01"
0xA5   0x0009  "CDC"
0xB0   0x0009  "	"
0xB1   0x0009  "mbed.org"
0xB2   0x0009  "CDC DEVICE"
0xB3   0x0009  "0123456789"
0xB4   0x0009  "01"
0xB5   0x0009  "CDC"
0xC0   0x0009  "	"
0xC1   0x0009  "mbed.org"
0xC2   0x0009  "CDC DEVICE"
0xC3   0x0009  "0123456789"
0xC4   0x0009  "01"
0xC5   0x0009  "CDC"
0xD0   0x0009  "	"
0xD1   0x0009  "mbed.org"
0xD2   0x0009  "CDC DEVICE"
0xD3   0x0009  "0123456789"
0xD4   0x0009  "01"
0xD5   0x0009  "CDC"
0xE0   0x0009  "	"
0xE1   0x0009  "mbed.org"
0xE2   0x0009  "CDC DEVICE"
0xE3   0x0009  "0123456789"
0xE4   0x0009  "01"
0xE5   0x0009  "CDC"
0xF0   0x0009  "	"
0xF1   0x0009  "mbed.org"
0xF2   0x0009  "CDC DEVICE"
0xF3   0x0009  "0123456789"
0xF4   0x0009  "01"
0xF5   0x0009  "CDC"

------------------------------

Connection path for device: 
Intel(R) 6 Series/C200 Series Chipset Family USB Enhanced Host Controller - 1C26
Root Hub
Generic USB Hub
Generic USB Hub
CDC DEVICE (VID=0x1F00 PID=0x2012)

Brought to you by TDD v1.82.0, Aug 20 2013, 17:17:20


8 years ago.

Hey Samual I had written a USB Iibrary to do just that a while ago (was to do with a project I did to hook a manual treadmill up to Skyrim, fun way to keep fit, swinging wiimotes for the swords while running was challenging though) anyway I always planned on cleaning the library up and publishing but never got round to it.

Here is the initial version, last time I put it on my mbed it worked, dont have time to try just now.

Exampe:

Import programUSBSerialKeyboard_Example

USBSerialKeyboard Example Program

Library :

Import libraryUSBSerialKeyboard

A Composite device with USBSerial and USBKeyboard