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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

Create Composite Applications

Create Composite Applications explains how to program a USB Device that supports more class functions. Composite applications combine various USB functionalities into one device.

Include into the project and configure the following RL-USB Device Source Files:

  1. The library that matches the device core:
    USB_CM1.lib - for Cortex-M1 devices.
    USB_CM3.lib - for Cortex-M3 devices.
    USB_ARM_L.lib - for ARM7 or ARM9 devices.
  2. usb_config.c - to configure the USB system.
  3. special files - provide special files. For example, disk image file - for MSC support, driver information file - for CDC support.
  4. usbd_device family.c(.h) - to configure the device hardware layer.
  5. usbd_user_xxx.c - to adapt the code to the application needs.
  6. USBD_Demo.c - to initialize and connect the USB Client device from main().
    usbd_init();                         // USB Initialization
    usbd_connect(__TRUE);                // USB Connect

Applications can be created using existing µVision projects. For example, to create a HID and MSC device:

  1. Copy all files from any folder \ARM\Boards\Vendor\BoardName\RL\USB\Device\Memory to a new folder and open the project *.uvproj with µVision.
  2. Copy the file usbd_user_hid.c from an existing HID project and include the file into this new project. The project should now contain the files usbd_user_hid.c and usbd_user_msc.c.

    Composite Projects

  3. Open the file usb_config.c and configure the USB device with the Configuration Wizard.
  4. Enable USB Device and set the device characteristics.

    Config USB Device

  5. Enable Class Support, Human Interface Device (HID), Mass Storage Device (MSC), and set the characteristics.

    Config Communication Device

  6. Optionally, adapt the source file usbd_device family.c that contains hardware dependent code.
  7. Adapt the code in usbd_user_hid.c and usbd_user_msc.c to the application needs.


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