libusb Developers Guide | ||
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int usb_control_msg
(usb_dev_handle *dev, int requesttype, int request, int value, int index, char *bytes, int size, int timeout);
usb_control_msg performs a control request to the default control pipe on a device. The parameters mirror the types of the same name in the USB specification. Returns number of bytes written/read or < 0 on error.
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Control Transfers | Up | usb_get_string |