Hi I need to send data to USB PIC16c745 this is my c code.
int main(){
struct usbdevfs_bulktransfer bulk;
int fd;
int ret,*data,dato=0xFF;
data=&dato;
fd = open("/proc/bus/usb/002/003", O_RDWR);
if(fd != -1) {
bulk.ep = 1;
bulk.len = 1024;
bulk.data = data;
bulk.timeout = 1000;
ret = ioctl(fd, USBDEVFS_BULK, &bulk);
perror("ioctl");
if (ret < 0)
printf("Error in bulk transfer\n");
/*else {
}*/
close(fd);
}
return 0;
}
But it send to me a ioctl device or resource busy. I try too with libusb:
usb_interrupt_write(udev,1,byte,8,10)
but i got the same message device or resource busy. In win98 I can
send data to USB PIC16745 with the same firmware. I got the firmware
and control OCX in this page
http://www.alecmcnamara.freeserve.co.uk/piccalc/.
But I need to make it on GNU/Linux.
Thank you
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