Using a USB Gamepad with Picoreplayer

[Roog]

As per the title, could someone please give me some assistance in figuring out how i can use a gamepad with picore player please?
I would like to hack the gamepad for its analogue joystick input functions.

Many thanks

[ralphy]

See this post for details on downloading the evtest tool.

Here's the output from a Logitech controller.

tc@rpi27:/mnt/mmcblk0p2/tce$ ./evtest
No device specified, trying to scan all of /dev/input/event*
Not running as root, no devices may be available.
Available devices:
/dev/input/event0:	FT5406 memory based driver
/dev/input/event1:	Logitech Logitech Dual Action
Select the device event number [0-1]: 1
Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x46d product 0xc216 version 0x111
Input device name: "Logitech Logitech Dual Action"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 288 (BTN_TRIGGER)
    Event code 289 (BTN_THUMB)
    Event code 290 (BTN_THUMB2)
    Event code 291 (BTN_TOP)
    Event code 292 (BTN_TOP2)
    Event code 293 (BTN_PINKIE)
    Event code 294 (BTN_BASE)
    Event code 295 (BTN_BASE2)
    Event code 296 (BTN_BASE3)
    Event code 297 (BTN_BASE4)
    Event code 298 (BTN_BASE5)
    Event code 299 (BTN_BASE6)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value    127
      Min        0
      Max      255
      Flat      15
    Event code 1 (ABS_Y)
      Value    127
      Min        0
      Max      255
      Flat      15
    Event code 2 (ABS_Z)
      Value    128
      Min        0
      Max      255
      Flat      15
    Event code 5 (ABS_RZ)
      Value    127
      Min        0
      Max      255
      Flat      15
    Event code 16 (ABS_HAT0X)
      Value      0
      Min       -1
      Max        1
    Event code 17 (ABS_HAT0Y)
      Value      0
      Min       -1
      Max        1
  Event type 4 (EV_MSC)
    Event code 4 (MSC_SCAN)

You should be able to remap the EV_KEY event type 1 keys using the information from this post.

Load the evdev kernel module

tc@rpi27:~$ sudo modprobe evdev

Find the joystick device name

tc@rpi27:/mnt/mmcblk0p2/tce$ cat /proc/bus/input/devices

I: Bus=0003 Vendor=046d Product=c216 Version=0111
N: Name="Logitech Logitech Dual Action"
P: Phys=usb-3f980000.usb-1.4/input0
S: Sysfs=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/0003:046D:C216.0001/input/input2
U: Uniq=F7FA2D56
H: Handlers=event1 js0 
B: PROP=0
B: EV=1b
B: KEY=fff 0 0 0 0 0 0 0 0 0
B: ABS=30027
B: MSC=10

Run inputlircd as the tc user in an ssh session.

sudo /usr/local/sbin/inputlircd -n "Logitech Logitech Dual Action" -m 0 -g -r 500 -f

And in another ssh connect run irw which returns.
tc@rpi27:~$ irw

120 0 BTN_JOYSTICK /dev/input/event1
121 0 BTN_THUMB /dev/input/event1
123 0 BTN_TOP /dev/input/event1
122 0 BTN_THUMB2 /dev/input/event1

You can map the keys to jivelite action by creating a keymap file for inputlircd.

For example:

$ cat /home/tc/inputlircd.keymap
BTN_TOP = KEY_UP
BTN_THUMB = KEY_DOWN
BTN_JOYSTICK = KEY_LEFT
BTN_THUMB2 = KEY_RIGHT

Press ctrl-c in the inputlircd session and restart it using
sudo /usr/local/sbin/inputlircd -n "Logitech Logitech Dual Action" -m 0 -g -r 500 -t /home/tc/inputlircd.keymap -f

Press ctrl-c in the irw session and restart irw and you should get the remapped keys.

tc@rpi27:~$ irw
121 0 KEY_DOWN /dev/input/event1
123 0 KEY_UP /dev/input/event1
122 0 KEY_RIGHT /dev/input/event1
120 0 KEY_LEFT /dev/input/event1

[Roog]

Hi @ralphy Sorry for my delay in responding,thank you for your very comprehensive response.