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Technical Support
On-Line Manuals
RL-ARM User's Guide (MDK v4)
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RL-USB
RL-USB for USB Device Applications
RL-USB Device Library
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RL-USB Device Software Stack
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RL-USB Device Source Files
RL-USB Device Configuration
Audio Device (ADC) Options
Communication Device (CDC) - ACM Options
Human Interface Device (HID) Options
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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
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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
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Library Reference
Appendix
Create USB Host Class Driver
Create USB Host Class Driver shows how to create a USB Host Class Driver using the RL-USB Library.
Class driver has to provide to the USB Host Core means to configure/unconfigure and initalize/uninitialize device of that class and also provide application with device functionality.
Creation of class driver means providing module with filled Device Class Driver structure (USBH_DCD) for USB Host Core functions and also class application level functions.
USBH_DCD usbh_dcd_cls = {
DEVICE_CLASS_ID,
Config,
UnConfig,
Init,
UnInit,
GetLastError
};
Explanation of USBH_DCD structure elements:
- USBH_CLS_DEVICE_CLASS_ID represents ID of class that this driver will handle. This is specified by the USB.org organization. (For example ID for HID device class is 03 and for Mass Storage Device class is 08).
- Config function should configure resources for a device of specified class.
- UnConfig function should unconfigure resources previously configured for a device of specified class.
- Init function should initialize the device of a specified class.
- UnInit function should uninitialize the device of a specified class.
- GetLastError function should return the last error code of the device of specified class.
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