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Technical Support
On-Line Manuals
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
Mass Storage Device (MSC) Options
Mass Storage Device (MSC) Options explains the configuration options for an mass storage device. The options can be edited in the file usb_config.c directly or using the µVision Configuration Wizard.
Where
-
Mass Storage Device (MSC) - enables class support for mass
storage devices. This option corresponds to
#define USBD_MSC_ENABLE.
#define USBD_MSC_ENABLE 1 // 1=enabled; 0=disabled
Bulk Endpoint Settings
configure the endpoint characteristics and affect the Endpoint Descriptors.
configure the endpoint characteristics and affect the Endpoint Descriptors.
-
Bulk In Endpoint Number sets the endpoint number. Values
between 1..15 are allowed. This option corresponds to
#define USBD_MSC_EP_BULKIN.
#define USBD_MSC_EP_BULKIN 2 // value range 1..15
-
Bulk Out Endpoint Number sets the endpoint number.
Values between 1..15 are allowed. This option corresponds to
#define USBD_MSC_EP_BULKOUT.
#define USBD_MSC_EP_BULKOUT 2 // value range 1..15
-
Maximum Packet Size sets the maximal packet size, in
bytes. Values between 1..1024 are allowed. This option
corresponds to #define USBD_MSC_WMAXPACKETSIZE.
#define USBD_MSC_WMAXPACKETSIZE 64 // value range 1..1024
-
High-speed enables the characteristics when using high
speed transfer rates. Enable the High Speed option under
USB Device. This
option corresponds to #define USBD_MSC_HS_ENABLE.
#define USBD_MSC_HS_ENABLE 1 // 1=enabled; 0=disabled
-
Maximum Packet Size sets the maximal packet size for
high speed transfers. Values between 1..1024 are allowed. This
option corresponds to
#define USBD_MSC_HS_WMAXPACKETSIZE.
#define USBD_MSC_HS_WMAXPACKETSIZE 512 // value range 1..1024
-
Maximum NAK Rate sets the maximum not acknowledge
packets for high speed transfers. Values between 0..255 are
allowed. This option also corresponds to
#define USBD_MSC_HS_BINTERVAL.
#define USBD_MSC_HS_BINTERVAL 0 // value range 0..255
Mass Storage Device Settings
configure device specific options.
configure device specific options.
-
MSC Interface String sets the mass storage interface
string identifier. 126 characters are allowed. This option
corresponds to #define USBD_MSC_STRDESC.
#define USBD_MSC_STRDESC L"USB_MSC" // up to 126 characters
-
Vendor Identification sets the vendor string identifier.
8 characters are allowed. This option corresponds to
#define USBD_MSC_INQUIRY_DATA.
#define USBD_MSC_INQUIRY_DATA L"KEIL " // see next option; 8 characters
-
Product Identification sets the product string
identifier. 16 characters are allowed. This option corresponds
to #define USBD_MSC_INQUIRY_DATA.
#define USBD_MSC_INQUIRY_DATA L"LPC23xx Disk " // see next+prev. option; 16 characters
-
Product Revision Level sets the product revision string
identifier. 4 characters are allowed. This option corresponds
to #define USBD_MSC_INQUIRY_DATA.
#define USBD_MSC_INQUIRY_DATA L"1.0 " // see prev. option; 4 characters
Note
- The USB Device Controller hardware might impose restrictions on the use of endpoints.
- Refer to Create MSC Applications for a quick-start on programming a USB MSC Device.
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