Steam Controller

IN report

The IN report packets contain 64 bytes.

byte index	bit 7	bit 6	bit 5	bit 4	bit 3	bit 2	bit 1	bit 0
[0]	unknown (0x01) - maybe the controller number?
[1]	unknown (0x00)
[2-3]	input = 0x013c, idle = 0x040b, on/off = 0x0301
[4-5]	counter (unsigned, little endian)
[6-7]	unknown (0x0000)
[8]	A	X	B	Y	LT	RT	LB	RB
[9]	LG	previous	steam	next	left pad button	?	?	?
[10]	?	left stick button	?	right pad touched	left pad touched	right pad button	left pad button or left stick button	RG
[11-15]	unknown
[16-17]	left pad x or stick x, signed, little endian, left = 0x8001 (-32767), right = 0x7fff (32767)
[18-19]	left pad y or stick y, signed, little endian, down = 0x8001 (-32767), up = 0x7fff (32767)
[20-21]	right pad x, signed, little endian, left = 0x8001 (-32767), right = 0x7fff (32767)
[22-23]	right pad y, signed, little endian, down = 0x8001 (-32767), up = 0x7fff (32767)
todo