i wrote a function as follows:
/*structure: */
struct usb_IrDA {
struct usb_device * udev; /* save off the usb device pointer */
struct usb_interface * interface; /* the interface for this device */
char num_bulk_in; /* number of bulk in endpoints we have */
char num_bulk_out; /* number of bulk out endpoints we have */
unsigned char * bulk_in_buffer; /* the buffer to receive data */
int bulk_in_size; /* the size of the receive buffer */
__u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */
unsigned char * bulk_out_buffer; /* the buffer to send data */
int bulk_out_size; /* the size of the send buffer */
struct urb * write_urb; /* the urb used to send data */
struct urb * read_urb; /* the urb used to recieve data */
struct urb * ctrl_urb; /* the urb used to perform control operations */
unsigned char* setup_packet;
__u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
int open_count; /* number of times this port has been opened */
struct semaphore sem; /* locks this structure */
unsigned char *ctrl_buf; /* conrol buffer: for sending control messages */
};
/*function:*/
static int stir_write(struct usb_IrDA *IrDA_dev, unsigned short reg,
unsigned char value)
{
int ret;
FILL_CONTROL_URB(IrDA_dev->ctrl_urb, IrDA_dev->udev,
usb_sndbulkpipe(IrDA_dev->udev, IrDA_dev->bulk_out_endpointAddr),
IrDA_dev->setup_packet,value,1,
IrDA_write_ctrl_callback, IrDA_dev);
ret=usb_submit_urb(IrDA_dev->ctrl_urb);
return ret;
}
/* end of function */
/* this function has been called continously four times, but not in loop*/
it doesn't work ... i dont why ?
regards,
- /usr/src/navtez
Senior Undergraduate Student
Dept of Computer Sc. & Engg.
BBSBEC Fatehgarh Sahib.
--------------------------------------
Ambition: To be on the cover of the TIME magazine
-----------------------------------------
Baba Banda Singh Bahadur Engineering College
Fatehgarh Sahib, Punjab, India
http://www.bbsbec.ac.in
http://www.bbsbec.org
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