dualsense.lua

-- based on https://www.reddit.com/r/gamedev/comments/jumvi5/dualsense_haptics_leds_and_more_hid_output_report/gcemle4/
-- requires hidapi + run with LuaJIT

local ffi = require('ffi')
ffi.cdef[[

typedef struct hid_device_ hid_device; /**< opaque hidapi structure */

int hid_init(void);

hid_device * hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number);

int hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen);
int hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen);

int hid_read(hid_device *dev, unsigned char *data, size_t length);
int hid_write(hid_device *dev, const unsigned char *data, size_t length);
]]
local hidapi = ffi.load('hidapi')

local res = hidapi.hid_init()

if handle then return nil end
handle = hidapi.hid_open(0x054c, 0x0ce6, nil)

ffi.cdef[[ size_t wcstombs (char* dest, const wchar_t* src, size_t max); ]]
function wprint(prefix, ws)
   local s = ffi.new('char[255]', 1)
   ffi.C.wcstombs(s, ws, 255)
   print(prefix, ffi.string(s))
end

local wstr = ffi.new('wchar_t[255]', 1)

hidapi.hid_get_manufacturer_string(handle, wstr, 255)
wprint('Manufacturer String:', wstr) -- Sony Interactive Entertainment

hidapi.hid_get_product_string(handle, wstr, 255)
wprint('Product String:', wstr) -- Wireless Controller

local output_report = ffi.new('char[48]')
local data = ffi.new('char[64]')

local fun = 0
local player = 1
while true do
   hidapi.hid_read(handle, data, 64) -- get input report

   fun = fun + 1
   if fun == 256 then fun = 0 player = (player + 1) % 0x20 end

   output_report[0]  = 0x02
   -- allow us to set everything (not necessarily the best idea, but can be good for testing)
   output_report[1]  = 0xff
   output_report[2]  = 0xff-8
   -- briefly alternate the main motors with gaps inbetween
   output_report[3]  = (fun > 128 and fun < 192 and 255) or 0 
   output_report[4]  = (fun < 64 and 255) or 0
   -- pulsating Mic LED
   output_report[9]  = 0x02
   
   -- right trigger motor at linear resistance starting part of the way
   output_report[11] = 1
   output_report[12] = 0x5f
   output_report[13] = 0xff
   -- left trigger with similar effect as the PS5 demo
   if fun % 32 < 16 then output_report[22] = 0 else output_report[22] = 2 end
   output_report[23] = 0x00
   output_report[24] = 0xff
   output_report[25] = 0xff
   
   -- cycling LEDs
   output_report[44] = player
   output_report[45] = fun
   output_report[47] = fun+128

   hidapi.hid_write(handle, output_report, 48)
end