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RL-ARM User's Guide (MDK v4)

RL-RTX RL-FlashFS RL-TCPnet RL-CAN RL-USB RL-USB for USB Device Applications RL-USB Device Library RL-USB Device Features RL-USB Device Software Stack RL-USB Device Functions RL-USB Device Source Files RL-USB Device Configuration Audio Device (ADC) Options Communication Device (CDC) - ACM Options Human Interface Device (HID) Options Mass Storage Device (MSC) Options Create USB Device Applications Create ADC Applications Create CDC ACM Applications Create HID Applications Create MSC Applications Create Composite Applications Test USB Device Applications Compliance Tests Test HID Client Application RL-USB for USB Host Applications RL-USB Host Library RL-USB Host Features RL-USB Host Software Stack RL-USB Host Functions RL-USB Host Source Files RL-USB Host Configuration Host Controller Driver Selection Host Controller Driver Configuration Host Class Driver Selection Create USB Host Applications Create USB Host HID Applications HID_Kbd Example Create USB Host MSC Applications Create USB Host Class Driver RL-USB Host Constants and Structures Error constants Speed constants Transaction Packet Type constants Transaction Error Type constants USB Request Block structure (USBH_URB) Endpoint structure (USBH_EP) Driver Capabilites structure (USBH_HCI_CAP) Device Class Instance structure (USBH_DCI) Host Controller Instance structure (USBH_HCI) Host Controller Driver structure (USBH_HCD) USB Concepts USB Transfer Rates USB Network Basic Communication Model USB Protocol Control Transfer Interrupt Transfer Isochronous Transfer Bulk Transfer Descriptors Device Configuration Device Descriptor Configuration Descriptor Interface Descriptor Endpoint Descriptor Device Qualifier Descriptor Example Programs Library Reference Appendix

HID_Kbd Example

The HID_Kbd example application shows a USB Host device interacting with a USB HID Class device. The interaction is explained on behalf of the Measure program. Commands are entered via a USB keyboard connected to an evaluation board configured as the USB Host. The Measure output and input prompt is shown on the board's LCD display.

Required hardware:

  • An evaluation board that supports USB Host.
  • USB keyboard.
  • ULINK2 USB-JTAG debug adapter.

Hardware setup:

  • Connect the board to the ULINK2 USB-JTAG adapter, and the adapter to the PC.
  • Connect the USB keyboard to the board.
  • Verify the jumper settings on the board.
  • Power-up the board.

Open the project Measure.uvproj located in the folder \ARM\Boards\Vendor\Board\RL\USB\Host\HID_Kbd with µVision.

  1. build target Build the project and download to target download it to target.
  2. debug Start a debugging session. Click run Run to continue.
    The board's LCD display shows the menu of the Measure program.
  3. Press "D" on the USB keyboard to display the measured values.
    Measure Menu
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