Belkin F8E211 Guida Utente Scaricare il pdf (Pagina 72)

Home
Belkin
no
F8E211
Guida Utente

Scaricare
Condividere

Condivisione
Aggiungi ai miei manuali
Stampa

usbd

Get the physical address of memory allocated by usbd

alloc()

Synopsis:

#include <sys/usbdi.h>

paddr_t usbd_mphys( const void *ptr );

Arguments:

ptr A pointer to the block of memory.

Library:

libusbdi

Description:

The usbd

mphys() function obtains the physical address used by usbd

alloc() to

allocate memory for a data transfer.

Returns:

Physical address.

Classiﬁcation:

QNX Neutrino, QNX 4

Safety

Cancellation point No

Interrupt handler No

Signal handler No

Thread Yes

See also:

usbd

alloc(), usbd

alloc

urb(), usbd

free(), usbd

free

urb(), usbd

mphys()

58 Chapter 4 • USB Library Reference September 10, 2007

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 106 107

Momentics 1
Publishing history 2
Contents 3
Contents September 10, 2007 4
Index 89 5
About the USB DDK 7
What you’ll ﬁnd in this guide 9
Assumptions 9
# mkdir my_DDK 10
# cd my_DDK 10
Building DDKs 11
Typographical conventions 12
Technical support 13
Chapter 1 15
Before You Begin 15
In this chapter. . 15
System requirements 17
USB devices supported 17
Known limitations 17
Photon and text mode 18
Chapter 2 19
Overview 19
The USB stack and library 21
How a class driver works 22
Chapter 3 23
USB Utilities 23
Chapter 4 27
USB Library Reference 27
Connection functions 29
Memory-management functions 29
I/O functions 29
Pipe-management functions 30
Abort all requests on a pipe 32
#include <sys/usbdi.h> 33
Examples: 44
Caveats: 45
Detach from the USB device 48
_int32 *fnum 61
_int32 *ﬂen ); 61
*usbd_languages_descriptor( 70
Reset a USB device 79
_uint8 cfg ); 81
_uint8 ifc 82
_uint8 alt ); 82
_uint32 ﬂags 84
_uint32 len ); 84
EOK Success 87
Get speciﬁc device status 94
Get a string descriptor 96
Synopsis: 100
Arguments: 100
Library: 100
Description: 100
Returns: 101
See also: 102
Classiﬁcation: 102
_USBDI_NFUNCS 29 103
90 Index September 10, 2007 104
URB_DIR_IN 70, 72, 74, 76, 78 105
URB_ISOCH_ASAP 76 105
92 Index September 10, 2007 106
USBD_TIME_DEFAULT 54 107
USBD_TIME_INFINITY 54 107
USBD_VERSION 28 107

Commenti su questo manuale

Nessun commento

Belkin F8E211 Guida Utente Pagina 72

Commenti su questo manuale

Prodotti e manuali riguardandi no Belkin F8E211