GPIOv1 on RetroPie 3.6

[SuperSirLink]

I am working on updating my RetroPie box from a Raspberry Pi 1B to a 3B... I was using the original version of the GPIO adapter to run my NES/SNES controllers... I see in the new version of the RetroPie Setup script there is a Gamecon driver and the SNESDev Driver I was using.

Which is the better driver to use? Or do you need to setup both?

Incidentally I had recompiled my own copy of SNESDev in order to reconfigure the push button for a single keyboard function as outlined on the old forums here:
http://blog.petrockblock.com/forums/topic/change-retropie-gpio-button-coding-to-1-press/#post-3528

Do I see need to do this, or is there another way to now accomplish this? Since I reused actual NES buttons, I wired the reset button to the GPIO adapter to send the ROM reset key press...

[SuperSirLink]

So have been doing more research and re-familiarizing myself with the setup... I did not see any way to use Gamecon to drive the momentary button on the GPIO adapter, so I have been working on setting up SNESDev-RPi again... I also didnt see any option still to change the key sequence the virtual keyboard momentary button would send, so I have been working on making the changes myself and recompiling as I did on the RPi 1 build...

I pulled down a clean copy from Git Hub per the instructions here: https://github.com/petrockblog/SNESDev-RPi
cd
git clone git://github.com/petrockblog/SNESDev-RPi.git
cd SNESDev-RPi

I was able to modify the SNESDev.c (~/SNESDev-RPi/src) to modify the key sequence like I had before:

		switch (button.state) {
		case BTN_STATE_IDLE:
			break;
		case BTN_STATE_PRESSED:
			if (button.pressedCtr == 1 && button.duration >= 1) {
				uinput_kbd_write(&uinp_kbd, KEY_LEFTALT, 1, EV_KEY);
				uinput_kbd_write(&uinp_kbd, KEY_H, 1, EV_KEY);
			}
			break;
		case BTN_STATE_RELEASED:
				if (button.pressedCtr == 1 && button.duration >= 1) {
					uinput_kbd_write(&uinp_kbd, KEY_LEFTALT, 0, EV_KEY);
					uinput_kbd_write(&uinp_kbd, KEY_H, 0, EV_KEY);
					}
			break;
		}

I then continued the install with:
sudo make
sudo make install
sudo make installservice

Testing js0 and js1 works as expected and each button registers:
jstest /dev/input/js0
jstest /dev/input/js1

The test button utility is not recognizing the button presses. Running it shows not pressed, however it sends the correct key sequence in RetroArch now (resets the ROM)...

[SuperSirLink]

I should also add, I couldn't not start SNESDev until I REMed out the line in the /etc/snesdev.cfg

Was getting an error: /usr/local/bin $ /etc/snesdev.cfg:4: no such option 'adapter_version'

Configuration file for SNESDev, the driver for the RetroPie GPIO Adapter.

Revision of RetroPie GPIO Adapter. Options: "1x", "2x"
adapter_version="1x"

button enabled? Options: 0 (disabled), 1 (enabled)
button_enabled=1

game pad 1 enabled? Options: 0 (disabled), 1 (enabled)
gamepad1_enabled=1

gamepad 1 type. Options: "nes", "snes"
gamepad1_type="snes"

game pad 2 enabled? Options: 0 (disabled), 1 (enabled)
gamepad2_enabled=1

gamepad 2 type. Options: "nes", "snes"
gamepad2_type="snes"

[SuperSirLink]

Don't recall if it was like this before, but JStest detects the A and B button as different numbers between NES and SNES controllers... This isn't a big deal from within the emulators since you can specify inputs for each console, but in Emulation Station you don't have that option...

NES:

• 1 = A
• 3 = B
• 7 = Start
• 6 = Select

SNES:

• 0 = A
• 1 = B
• 2 = X
• 3 = Y
• 7 = Start
• 6 = Select
• 4 = Left Bumper
• 5 = Right Bumper

[SuperSirLink]

Doing this agin but now on RetroPie 4.2 but running into some trouble and not sure where my break down is...

I am trying to setup SNES-Dev again still using my GPIO adapter 1.2 on a Raspberry Pi 3, I am able to go through my steps above without an issues that I can see. But trying to run the jstest is not successful this time.

I do not have a js0 or js1 inside /dev/input

Can someone give me an idea as to where I am going wrong?

[Darksavior]

I'm using the gamecon driver with two snes pads. It's much better than the snesdev driver because it doesn't need 30 seconds to shutdown.

[SuperSirLink]

@Darksavior I thought about switching but I rely on the soft button on the GPIO adapter...

[SuperSirLink]

My notes to myself were not very clear :) I got the same error I noted when I tried to start SNESDev manually ...

I have to rem out the line adapter_version="1x" in /etc/snesdev.cfg (changing the line to the correct version of the board 1x, was not enough)

Once I did that I was able to launch SNESdev manually and validate js0 and js1