> > fd = open("/proc/bus/usb/002/003", O_RDWR);
>
> It would make your program more flexible if the bus and device numbers
> were passed as command-line arguments instead of being fixed numbers.
> After all, those numbers will change every time you plug in the USB
> device.
Yes you have reason, but I'm just try.
Here is the new code:
int main(){
struct usbdevfs_bulktransfer bulk;
struct usbdevfs_ioctl ctrl;
int fd,ret,interface=0x00;
static unsigned char dato[4] = {0xFF, 0, 0, 0};
fd = open("/proc/bus/usb/002/003", O_RDWR);
if(fd != -1) {
//bulk.ep = USB_DIR_IN | 1;
bulk.ep = 1;
bulk.len = 6;
bulk.data = &dato;
bulk.timeout = 1000;
ioctl(fd, USBDEVFS_CLAIMINTERFACE, &interface);
perror("ioctl");
ioctl(fd, USBDEVFS_BULK, &bulk);
perror("ioctl");
close(fd);
}else
printf("No lo pudo abrir");
return 0;
}
But i receive the same thing.
ioctl: Success
ioctl: Invalid argument
syslog
usb 2-2: usbfs: USBDEVFS_BULK failed ep 0x1 len 6 ret -22
A comment.
I send the data 0xFF just for an example. The firmware receive 4 bytes
and then plus every one.
Can the device's firmware be waiting another data or another kind of data?
Thank you.
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