An update to my previous post. I was able to improive the average lag by disabling the serial monitor, passing a reference of the controller to the polling logic (eliminating the need to loop over the current state and previous state to determine if buttons should be pressed), and adding a 1ms delay between loops (should have realized that the board need some down time between calls). I’ve added the code since I think 8ms is a perfectly good lag result for a diy project.
Update: SNES to Bluetooth Lag is now at 8ms and code is available
Submitted 8 months ago by v1605@lemmy.world to retrogaming@lemmy.world
https://github.com/v1605/SNES-BLE/tree/main
Toes@ani.social 8 months ago
Have you explored changing the polling logic to interrupt?
v1605@lemmy.world 8 months ago
Can you provide an example? I only experimented with delay and found that 1 millisecond gave the best improvement.
Toes@ani.social 8 months ago
I’m not familiar with the hardware at hand, but an example is how the PS/2 port on a computer is interrupt based. Where you press a button and it informs the cpu of the button press. I was curious if the hardware you’re working with has something akin to that.