fteeprom-{erase,prog}: detach logic: change to detach by default As it turns out, detaching all ttyUSB interfaces of a multichannel device does not require outside knowledge of how many channels there are, as in our previous -d option design that is being removed here - instead we can read the bNumInterfaces constant from the USB device's config descriptor and thus know how many interfaces there are in total. Based on this discovery, change the design of fteeprom-{erase,prog} as follows: * remove -d option; * flip the default to where we detach all interfaces by default; * add -n option to NOT detach any interfaces.

/* declarations for libftmini EEPROM operation functions */

u_short ftmini_read_eeprom_loc(usb_dev_handle *usbh, u_short addr);
void ftmini_write_eeprom_loc(usb_dev_handle *usbh, u_short addr, u_short val);
void ftmini_erase_eeprom(usb_dev_handle *usbh);

void ft232r_eeprom_magic(usb_dev_handle *usbh);