#include <device.h>
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.
Data Fields | |
| uintptr_t | dev_base |
| Hardware base address. | |
| int(* | dev_close )(NUTFILE *) |
| Close a device or file. | |
| void * | dev_dcb |
| Driver control block. | |
| void * | dev_icb |
| Interface control block. | |
| int(* | dev_init )(NUTDEVICE *) |
| Driver initialization routine. | |
| int(* | dev_ioctl )(NUTDEVICE *, int, void *) |
| Driver control function. | |
| uint8_t | dev_irq |
| Interrupt registration number. | |
| char | dev_name [9] |
| Unique device name. | |
| NUTDEVICE * | dev_next |
| Link to the next device structure. | |
| NUTFILE *(* | dev_open )(NUTDEVICE *, CONST char *, int, int) |
| Write to device. Open a device or file. | |
| int(* | dev_read )(NUTFILE *, void *, int) |
| Read from device. | |
| long(* | dev_size )(NUTFILE *) |
| Request file size. | |
| uint8_t | dev_type |
| Type of interface. | |
| int(* | dev_write )(NUTFILE *, CONST void *, int) |
| Write to device. | |
| uintptr_t _NUTDEVICE::dev_base |
Hardware base address.
Will be set by calling NutRegisterDevice(). On some device drivers this address may be fixed.
| void* _NUTDEVICE::dev_dcb |
Driver control block.
Points to a device specific information block.
| void* _NUTDEVICE::dev_icb |
Interface control block.
With stream devices, this points to the IFSTREAM structure and with network devices this is a pointer to the IFNET structure.
| 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.
| uint8_t _NUTDEVICE::dev_irq |
Interrupt registration number.
Will be set by calling NutRegisterDevice(). On some device drivers the interrupt may be fixed.
| uint8_t _NUTDEVICE::dev_type |
Type of interface.
May be any of the following:
1.5.1