#include <device.h>
Data Fields | |
NUTDEVICE * | dev_next |
Link to the next device structure. | |
char | dev_name [9] |
Unique device name. | |
u_char | dev_type |
Type of interface. | |
uptr_t | dev_base |
Hardware base address. | |
u_char | dev_irq |
Interrupt registration number. | |
void * | dev_icb |
Interface control block. | |
void * | dev_dcb |
Driver control block. | |
int(* | dev_init )(NUTDEVICE *) |
Driver initialization routine. | |
int(* | dev_ioctl )(NUTDEVICE *, int, void *) |
Driver control function. | |
int(* | dev_read )(NUTFILE *, void *, int) |
Read from device. | |
int(* | dev_write )(NUTFILE *, CONST void *, int) |
Write to device. | |
NUTFILE *(* | dev_open )(NUTDEVICE *, CONST char *, int, int) |
Write to device. | |
int(* | dev_close )(NUTFILE *) |
Close a device or file. | |
long(* | dev_size )(NUTFILE *) |
Request file size. |
Each device driver provides a global variable of this type. Applications use NutRegisterDevice() to bind the device driver to the application code. Except this call, applications refer to device drivers by the name of the device when using standard C functions like _open() or fopen().
More than one device driver may be available for the same hardware device. Typically these drivers provide the same name for the device and applications must not refer to more than one device driver with the same name.
Definition at line 151 of file device.h.
char _NUTDEVICE::dev_name[9] |
Hardware base address.
Will be set by calling NutRegisterDevice(). On some device drivers this address may be fixed.
Interrupt registration number.
Will be set by calling NutRegisterDevice(). On some device drivers the interrupt may be fixed.
void* _NUTDEVICE::dev_icb |
void* _NUTDEVICE::dev_dcb |
int(* _NUTDEVICE::dev_init)(NUTDEVICE *) |
Driver initialization routine.
This routine is called during device registration.
int(* _NUTDEVICE::dev_ioctl)(NUTDEVICE *, int, void *) |
Driver control function.
Used to modify or query device specific settings.
int(* _NUTDEVICE::dev_read)(NUTFILE *, void *, int) |
Read from device.
int(* _NUTDEVICE::dev_write)(NUTFILE *, CONST void *, int) |
Write to device.
NUTFILE*(* _NUTDEVICE::dev_open)(NUTDEVICE *, CONST char *, int, int) |
Write to device.
Open a device or file.
int(* _NUTDEVICE::dev_close)(NUTFILE *) |
Close a device or file.
long(* _NUTDEVICE::dev_size)(NUTFILE *) |
Request file size.