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On-Line Manuals
RL-ARM User's Guide (MDK v4)
RL-RTX
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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
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Create USB Device Applications
Create ADC Applications
Create CDC ACM Applications
Create HID Applications
Create MSC Applications
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Test USB Device Applications
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RL-USB for USB Host Applications
RL-USB Host Library
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RL-USB Host Software Stack
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RL-USB Host Source Files
RL-USB Host Configuration
Host Controller Driver Selection
Host Controller Driver Configuration
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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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USB Network
Basic Communication Model
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Device Qualifier Descriptor
Example Programs
Library Reference
Appendix
Driver Capabilites structure (USBH_HCI_CAP)
Host Controller driver Instance CAPabilities (USBH_HCI_CAP) structure represents host controller driver instance capabilities.
typedef struct { /* Host Controller Driver Capabilities*/
union {
struct {
U32 MultiPckt; /* Multiple data packet handling */
};
};
U32 MaxDataSz; /* Maximum data that can be handled */
U32 CtrlNAKs; /* Number of NAKs for ctrl endpoints */
U32 BulkNAKs; /* Number of NAKs for bulk endpoints */
} USBH_HCI_CAP;
Explanation of USBH_HCI_CAP structure elements:
- MultiPckt determines if driver supports multiple packets in a single transfer request. (__TRUE = supports multiple packet transfers, __FALSE = no support for multiple packet transfers)
- MaxDataSz represents maximum data that can be handled by driver.
- CtrlNAKs represents number of NAKs that driver will wait for transfer on control endpoint before reporting that transfer has failed.
- BulkNAKs represents number of NAKs that driver will wait for transfer on bulk endpoint before reporting that transfer has failed.
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