SNES HW2 - Controller detection does not work

[kaduleite]

Answers checklist.

• I have read and will follow the terms above.
• I have read the documentation BlueRetro wiki and the issue is not addressed there.
• I have updated my BlueRetro to latest version available.
• I have searched the issue tracker for a similar issue and not found a similar issue.

BlueRetro firmware version

25.04

BlueRetro firmware specification

HW2

BlueRetro firmware variant

System specific

BlueRetro hardware type

Internal install DIY

Manufacturer

DIY

System used

Nintendo SFC SNES

Bluetooth controller brand & name

Sony PS5 Dualsense and othes - this does not affect the issue.

What is the problem? (only list ONE problem per report)

Controller detection doesn't work on SNES HW2.

I build an HW2 instalation on Nintendo SNES.
Pins 35 and 36 are HIGH, I can connect my bluetooth controller and it works OK.
I've installed push buttons on both SNES controller ports connected to detection pin (IO35 and IO36) and GND, so when I insert a wired gamepad, the button is pressed and the IO is grounded.
It was expected bluetooth controller jumps to next port and the wired gamepad works normally. I did it in a Dreamcast system and works like a charm.
Thank you for your amazing job. I hope this issue be resolved soon.

What did you expect to happen?

I expected to have wired gamepad working when I connected it on a port as pin detection is grounded.

Attach BlueRetro debug trace here

br_debug_trace.zip

[ppspainx]

for SNES it is not enough to just connect the two pins to gnd, you have to also use a levelshifter with OE support to "disable" the datapins. it is described here: https://github.com/darthcloud/BlueRetro/wiki/BlueRetro-HW2-Internal-Install-Specification#6---bus-conflict-mitigation

in other words: if pin 35 or 36 is connected to gnd you have to also disconnect the data pins D0 and D1 of each port to get wired controllers working. and this can be done with a levelshifter that has OE support.