3.34. One Host One Device Dual Port

3.34.1. Overview

This example project shows two USB ports, one as host and one as device. USB0 as a host, which support HID class(Keyboard and Mouse). UsB1 as a device, which as a MSC device.

3.34.2. Board Setting

• Connect a USB port on PC to the PWR DEBUG port on the development board with a USB Type-C cable

• Connect a USB port on the development board USB0 with a USB Type-C convert Type-A cable

• Connect a USB port on the development board USB1 with a USB Type-C convert Type-A cable

3.34.3. Running the example

• Download the program to the development board to run, and use the serial port debugging assistant to view the output log.

• When the USB0 of the development board is connected with keyboard

  • The serial port debugging assistant will display the following data:

  [D/USB] Port change:0x02
  [D/USB] Port 1 change
  [D/USB] port 1, status:0x101, change:0x01
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [I/USB] New low-speed device on Hub 1, Port 1 connected
  [I/USB] New device found,idVendor:413c,idProduct:2113,bcdDevice:0108
  [I/USB] The device has 2 interfaces
  [I/USB] Enumeration success, start loading class driver
  [I/USB] Loading hid class driver
  [I/USB] Ep=81 Attr=03 Mps=8 Interval=24 Mult=00
  [I/USB] Register HID Class:/dev/input0
  [E/USB] do not support Class:0x03,Subclass:0x00,Protocl:0x00
  mount a keyboard
  

  • When the keyboard is pressed, the data sent by the keyboard will be displayed:

  0x00 0x00 0x16 0x00 0x00 0x00 0x00 0x00 nbytes:8
  0x00 0x00 0x16 0x07 0x00 0x00 0x00 0x00 nbytes:8
  0x00 0x00 0x07 0x00 0x00 0x00 0x00 0x00 nbytes:8
  0x00 0x00 0x16 0x00 0x00 0x00 0x00 0x00 nbytes:8
  0x00 0x00 0x16 0x07 0x00 0x00 0x00 0x00 nbytes:8
  0x00 0x00 0x07 0x00 0x00 0x00 0x00 0x00 nbytes:8
  0x00 0x00 0x16 0x00 0x00 0x00 0x00 0x00 nbytes:8
  

• When the USB0 of the development board is connected with mouse

  • The serial port debugging assistant will display the following data:

  [D/USB] Port change:0x02
  [D/USB] Port 1 change
  [D/USB] port 1, status:0x100, change:0x01
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [D/USB] Port 1, status:0x101, change:0x00
  [I/USB] New full-speed device on Hub 1, Port 1 connected
  [I/USB] New device found,idVendor:046d,idProduct:c542,bcdDevice:0302
  [I/USB] The device has 1 interfaces
  [I/USB] Enumeration success, start loading class driver
  [I/USB] Loading hid class driver
  [I/USB] Ep=82 Attr=03 Mps=8 Interval=04 Mult=00
  [I/USB] Register HID Class:/dev/input0
  mount a mouse
  

  • When moving or clicking the mouse, the data sent by the mouse will be displayed:

  0x01 0x00 0xfa 0xff 0x06 0x00 0x00 nbytes:7
  0x01 0x00 0xf8 0xff 0x07 0x00 0x00 nbytes:7
  0x01 0x00 0xf7 0xff 0x07 0x00 0x00 nbytes:7
  0x01 0x00 0xf5 0xff 0x09 0x00 0x00 nbytes:7
  0x01 0x00 0xf4 0xff 0x08 0x00 0x00 nbytes:7
  

• When the USB1 of the development board is connected with PC, PC can automatically recognize and enumerate a USB disk device.

  • You can copy a file to the USB disk, and then copy it from the USB disk.