usb_read()

Reads data from USB device and prints its size to output window.

Syntax

usb_read(path);
usb_read(path, size);
usb_read(path, size, timeout);

path	USB device path.
size	Number of bytes to read. Special values are:	(optional)
	0 - USB packet size.
	-1 - USB packets are read without interruption, data is read until buffer is full.
timeout	Timeout value in milliseconds. After time is elapsed, any incoming USB data will not be read.	(optional)
Return Value	Number of bytes read.

Read 8 bytes of data:

path = "\\?\hid#vid_045e&pid_028e&ig_00#8&1fa5fd5b&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}";
result = usb_read(path, 8, 50);

result:

Read USB packet size:

path = "\\?\hid#vid_045e&pid_028e&ig_00#8&1fa5fd5b&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}";
result = usb_read(path, 0, 50);

result:

Read data until buffer is full:

path = "\\?\hid#vid_045e&pid_028e&ig_00#8&1fa5fd5b&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}";
result = usb_read(path, -1, 50);

result: