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Small change to Sega two controller adapter wiring.

Small change to Sega two controller adapter wiring. Wiring diagrams added for Sega two controller adapter and NES/SNES adapters.
pull/5/head
MickGyver 2 years ago
parent
commit
1015f20cd3
9 changed files with 50 additions and 17 deletions
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      .gitignore
  2. +2
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      CD32ControllerUSB/CD32ControllerUSB.ino
  3. +1
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      SNESControllersUSB/README.md
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      SNESControllersUSB/images/snes-usb-adapter-wiring.png
  5. +25
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      SegaTwoControllersUSB/README.md
  6. +15
    -11
      SegaTwoControllersUSB/SegaControllers32U4.cpp
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      SegaTwoControllersUSB/SegaControllers32U4.h
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      SegaTwoControllersUSB/SegaTwoControllersUSB.ino
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      SegaTwoControllersUSB/images/sega-usb-2x-adapter-wiring.png

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.gitignore View File

@ -0,0 +1,3 @@
# Ignore VS Code folders
.vscode
.build

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CD32ControllerUSB/CD32ControllerUSB.ino View File

@ -47,8 +47,8 @@
// (Second controller port for future reference)
// 1 15 PB1
// 2 14 PB3
// 3 16 PB2
// 4 10 PB6
// 3 2 PD1
// 4 5 PC6
// 5 A2 PF5
// 6 7 PE6 (Important: Connect this pin via a 220Ω resistor!)
// 7 VCC


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SNESControllersUSB/README.md View File

@ -9,7 +9,7 @@ With this simple to build adapter you can connect NES gamepads to a PC, Raspber
- Micro USB cable
## Wiring
![Assemble1](images/nes-usb-adapter-wiring.png)
![Assemble1](images/snes-usb-adapter-wiring.png)
## License
This project is licensed under the GNU General Public License v3.0.

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SNESControllersUSB/images/snes-usb-adapter-wiring.png View File

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SegaTwoControllersUSB/README.md View File

@ -0,0 +1,25 @@
# DaemonBite Sega Controllers To USB Adapter
## Introduction
This is a simple to build adapter for connecting two Mega Drive (Genesis), Master System (+ Atari and C= controllers) to USB. It supports 3 and 6-button Mega Drive controllers and 1 and 2-button SMS/Atari/C= controllers.
The input lag for this adapter is minimal. Here is the result from a test with a 1ms polling rate on a MiSTer (one port version):
| Controller | Samples | Average | Max | Min | Std Dev |
| ------ | ------ | ------ | ------ | ------ | ------ |
| Original 3-Button Mega Drive Controller | 2342 | 0.75ms | 1.28ms | 0.24ms | 0.29ms |
| 8bitdo M30 Wireless 2.4G | 2348 | 4.54ms | 8.05ms | 2.22ms | 1.31ms |
## Parts you need
- Arduino Pro Micro (ATMega32U4)
- 2x Male end of Mega Drive controller extension (or DSUB 9Pin Male connectors and some wires)
- Heat shrink tube (Ø ~20mm)
- Micro USB cable
## Wiring
![Assemble1](images/sega-usb-2x-adapter-wiring.png)
## License
This project is licensed under the GNU General Public License v3.0.
## Credits
The Mega Drive gamepad interface is based on this repository : https://github.com/jonthysell/SegaController but almost entirely rewritten and a lot of optimisations have been made.

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SegaTwoControllersUSB/SegaControllers32U4.cpp View File

@ -33,25 +33,28 @@
SegaControllers32U4::SegaControllers32U4(void)
{
// Setup select pin as output high (16, PB2)
DDRB |= B00000100; // output
PORTB |= B00000100; // high
// Setup select pin as output high (6, PD7)
DDRD |= B10000000; // output
PORTD |= B10000000; // high
// Setup select pin as output high (5, PC6)
DDRC |= B01000000; // output
PORTC |= B01000000; // high
// Setup input pins (A0,A1,A2,A3,14,15,16 or PF7,PF6,PF5,PF4,PB3,PB1,PB2)
// Setup input pins (A0,A1,A2,A3,14,15 or PF7,PF6,PF5,PF4,PB3,PB1)
DDRF &= ~B11110000; // input
PORTF |= B11110000; // high to enable internal pull-up
DDRB &= ~B00001010; // input
PORTB |= B00001010; // high to enable internal pull-up
// Setup input pins (TXO,RXI,2,3,4,6 or PD3,PD2,PD1,PD0,PD4,PD7)
DDRD &= ~B10011111; // input
PORTD |= B10011111; // high to enable internal pull-up
// Setup input pins (TXO,RXI,2,3,4,6 or PD3,PD2,PD1,PD0,PD4,PE6)
DDRD &= ~B00011111; // input
PORTD |= B00011111; // high to enable internal pull-up
DDRE &= ~B01000000; // input
PORTE |= B01000000; // high to enable internal pull-up
_inputReg1 = 0;
_inputReg2 = 0;
_inputReg3 = 0;
_inputReg4 = 0;
for(byte i=0; i<=1; i++)
{
_currentState[i] = 0;
@ -77,7 +80,7 @@ word SegaControllers32U4::getStateMD1()
// Set the select pin low/high
_pinSelect[0] = !_pinSelect[0];
(!_pinSelect[0]) ? PORTB &= ~B00000100 : PORTB |= B00000100; // Set LOW on even cycle, HIGH on uneven cycle
(!_pinSelect[0]) ? PORTD &= ~B10000000 : PORTD |= B10000000; // Set LOW on even cycle, HIGH on uneven cycle
// Short delay to stabilise outputs in controller
delayMicroseconds(SC_CYCLE_DELAY);
@ -166,6 +169,7 @@ word SegaControllers32U4::getStateMD2()
// Read input register(s)
_inputReg3 = PIND;
_inputReg4 = PINE;
if(_ignoreCycles[1] <= 0)
{
@ -192,7 +196,7 @@ word SegaControllers32U4::getStateMD2()
(bitRead(_inputReg3, DB9_PIN3_BIT2) == LOW) ? _currentState[1] |= SC_BTN_LEFT : _currentState[1] &= ~SC_BTN_LEFT;
(bitRead(_inputReg3, DB9_PIN4_BIT2) == LOW) ? _currentState[1] |= SC_BTN_RIGHT : _currentState[1] &= ~SC_BTN_RIGHT;
(bitRead(_inputReg3, DB9_PIN6_BIT2) == LOW) ? _currentState[1] |= SC_BTN_B : _currentState[1] &= ~SC_BTN_B;
(bitRead(_inputReg3, DB9_PIN9_BIT2) == LOW) ? _currentState[1] |= SC_BTN_C : _currentState[1] &= ~SC_BTN_C;
(bitRead(_inputReg4, DB9_PIN9_BIT2) == LOW) ? _currentState[1] |= SC_BTN_C : _currentState[1] &= ~SC_BTN_C;
}
}
else // No Mega Drive controller is connected, use SMS/Atari mode
@ -206,7 +210,7 @@ word SegaControllers32U4::getStateMD2()
if (bitRead(_inputReg3, DB9_PIN3_BIT2) == LOW) { _currentState[1] |= SC_BTN_LEFT; }
if (bitRead(_inputReg3, DB9_PIN4_BIT2) == LOW) { _currentState[1] |= SC_BTN_RIGHT; }
if (bitRead(_inputReg3, DB9_PIN6_BIT2) == LOW) { _currentState[1] |= SC_BTN_A; }
if (bitRead(_inputReg3, DB9_PIN9_BIT2) == LOW) { _currentState[1] |= SC_BTN_B; }
if (bitRead(_inputReg4, DB9_PIN9_BIT2) == LOW) { _currentState[1] |= SC_BTN_B; }
}
}
else // Select pin is LOW
@ -223,7 +227,7 @@ word SegaControllers32U4::getStateMD2()
if(!_sixButtonMode[1])
{
(bitRead(_inputReg3, DB9_PIN6_BIT2) == LOW) ? _currentState[1] |= SC_BTN_A : _currentState[1] &= ~SC_BTN_A;
(bitRead(_inputReg3, DB9_PIN9_BIT2) == LOW) ? _currentState[1] |= SC_BTN_START : _currentState[1] &= ~SC_BTN_START;
(bitRead(_inputReg4, DB9_PIN9_BIT2) == LOW) ? _currentState[1] |= SC_BTN_START : _currentState[1] &= ~SC_BTN_START;
}
}
}


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SegaTwoControllersUSB/SegaControllers32U4.h View File

@ -56,7 +56,7 @@ enum
DB9_PIN3_BIT2 = 1,
DB9_PIN4_BIT2 = 0,
DB9_PIN6_BIT2 = 4,
DB9_PIN9_BIT2 = 7
DB9_PIN9_BIT2 = 6
};
const byte SC_INPUT_PINS = 6;
@ -83,6 +83,7 @@ class SegaControllers32U4 {
byte _inputReg1;
byte _inputReg2;
byte _inputReg3;
byte _inputReg4;
};
#endif

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SegaTwoControllersUSB/SegaTwoControllersUSB.ino View File

@ -38,7 +38,7 @@
// 3 A2 PF5
// 4 A3 PF4
// 6 14 PB3
// 7 16 PB2 (6 PD7)
// 7 6 PD7
// 9 15 PB1
// 1 TXO PD3
@ -47,7 +47,7 @@
// 4 3 PD0
// 6 4 PD4
// 7 5 PC6
// 9 6 PD7
// 9 7 PE6
SegaControllers32U4 controllers;


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SegaTwoControllersUSB/images/sega-usb-2x-adapter-wiring.png View File

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