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tang nano20k nes gamepad #49

Closed
wants to merge 22 commits into from
Closed

tang nano20k nes gamepad #49

wants to merge 22 commits into from

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fjpolo
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@fjpolo fjpolo commented Jan 13, 2024 •
edited
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Add NES Gamepad support for NESTang (tang nano 20k)

⚠Only gamepad1 was added for now

ToDo:

  • Update o_button_state to works as a shift register
    - Add gamepad2
  • Update verilator tests

@fjpolo
Update .gitignore
f58e1a2
@fjpolo
- Connect NESGamepad to nes_btn in top
f58c320 
- Clean NESGamepad.v
@fjpolo
- Add formal verification
6332797
@fjpolo
Change reg to wire for nes_gamepad
82d23f8
@fjpolo
Timing was really messed up, work on the real deal
629c989
@fjpolo
- Test physical gamepad
57ce414 
    - Use resistor-based LVCMOS3V3 to TTL5V signal converter
    - Use resistor-based TTL5V to LVCMOS3V3 signal converter
    - Latch signal pulled to low before 12uS needed
    - Gamepad not responding with bits
- Wrong timing, change 60Hz clock to 12uS clock
    - Use 60Hz clock to sample @16,6mS
- Add formal verification using SymbiYosis
@fjpolo
- Fix first data bit being at latch state
f509894 
- Fix Verilator FSM
@fjpolo
Don't need ClockDivider module
7ec35f8
@fjpolo
Update CHANGELOG
df8b596
@fjpolo
Update NESGamepad.cpp description
05c23ca
@fjpolo
NESGamepad pins don't need pull-up/pull-dn resistors
dc151c3
@fjpolo
First working module 😁😎
1c03066
@fjpolo
- Update signals
17da891 
- Clean code
@fjpolo
- Update documentation
0f70e7d
@fjpolo
Remove .gprj file
2afd50c
@fjpolo
Remove unnecessary file from commit
7810abb
@fjpolo
Add NESGamepad.v to project file
fa38803
@nand2mario
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Well done! Just curious, have you tested without the level shifter? Sometimes replica controllers work with both voltage levels.

@fjpolo
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fjpolo commented Jan 17, 2024 •
edited
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Well done! Just curious, have you tested without the level shifter? Sometimes replica controllers work with both voltage levels.

I was going to, didn't have the time. Would be awesome not needing it, so we can wire it directly, will update the schematic if it works

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fjpolo commented Jan 22, 2024

Tested directly to LVCMOS3V3 IOs and it's working, at least for 8BitDo N30 2.4g wireless gamepad for original NES
.

  • Added joystick#2
  • Changed pinout
  • Updated wiring
  • Updated documentation

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fjpolo commented Jan 25, 2024

  • Add support for 8BitDo Home button: return back to main menu

@fjpolo fjpolo force-pushed the fjpolo/TangNano20k_NESGamepad branch from 0617a75 to ad72d2e Compare January 25, 2024 14:28
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fjpolo commented Jan 25, 2024

Everything re-tested and working :)

@nand2mario
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Great! I'll merge this.

@fjpolo fjpolo mentioned this pull request Jan 30, 2024
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@fjpolo fjpolo mentioned this pull request Jan 30, 2024
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@nand2mario
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Just merged #52. Closing this as I believe #52 supercedes this.

@nand2mario nand2mario closed this Feb 11, 2024
@fjpolo fjpolo deleted the fjpolo/TangNano20k_NESGamepad branch March 22, 2024 14:38
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