src/ctccid/usb_device.c File Reference

#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <libusb-1.0/libusb.h>
#include "usb_device.h"

Functions
int	USB_Open (unsigned short pn, usb_device_t **device)
int	USB_Close (usb_device_t **device)
int	USB_Write (usb_device_t *device, unsigned int length, unsigned char *buffer)
int	USB_Read (usb_device_t *device, unsigned int *length, unsigned char *buffer)

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Function Documentation

int USB_Close

(

usb_device_t **

device

)

Close USB device and free allocated resources

Parameters:

device

Structure with device specific data

Returns:

Status code USB_OK, ERR_USB

int USB_Open	(	unsigned short	pn,
		usb_device_t **	device
	)

Open USB device at the specified port and allocate necessary resources

Parameters:

pn	Port number
device	Structure holding device specific data

Returns:

Status code USB_OK, ERR_NO_READER, ERR_USB

int USB_Read	(	usb_device_t *	device,
		unsigned int *	length,
		unsigned char *	buffer
	)

Read data block from specified USB device using bulk transfer

Parameters:

device	Device specific data
length	Length of data buffer
buffer	Data buffer

Returns:

Status code USB_OK, ERR_USB

int USB_Write	(	usb_device_t *	device,
		unsigned int	length,
		unsigned char *	buffer
	)

Write data block to specified USB device using bulk transfer

Parameters:

device	Device specific data
length	Length of data to write
buffer	Data buffer

Returns:

Status code USB_OK, ERR_USB