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https://github.com/MickGyver/DaemonBite-Retro-Controllers-USB
synced 2024-11-24 02:02:21 -05:00
Empty serial without the need to edit system libraries
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MickGyver
parent
c098ddc905
commit
1cae9f1cbe
@ -23,11 +23,7 @@
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#include "Gamepad.h"
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enum Mode
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{
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TwoButton,
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CD32
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};
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#define BUTTON_READ_DELAY 300 // Button read delay in µs
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// Controller DB9 pins (looking face-on to the end of the plug):
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//
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@ -40,15 +36,25 @@ enum Mode
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// --------------------------------------
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// 1 TXO PD3
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// 2 RXI PD2
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// 3 3 PD0
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// 4 4 PD4
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// 3 3 PD0
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// 4 4 PD4
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// 5 A0 PF7
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// 6 6 PD7
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// 6 6 PD7 (Important: Connect this pin via a 220Ω resistor!)
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// 7 VCC
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// 8 GND
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// 9 A1 PF6
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//
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// Connect a slide switch to pins GND,GND and 2 (PD1)
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// -----------------
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// (Second controller port for future reference)
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// 1 15 PB1
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// 2 14 PB3
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// 3 16 PB2
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// 4 10 PB6
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// 5 A2 PF5
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// 6 7 PE6 (Important: Connect this pin via a 220Ω resistor!)
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// 7 VCC
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// 8 GND
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// 9 A3 PF4
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// Set up USB HID gamepad
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Gamepad_ Gamepad;
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@ -60,8 +66,12 @@ uint8_t axesPrev = 0;
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uint8_t buttons = 0;
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uint8_t buttonsPrev = 0;
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Mode mode = CD32;
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Mode modePrev = mode;
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// Timing
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long microsNow = 0;
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long microsButtons = 0;
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// CD32 controller detection
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uint8_t detection = 0;
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void setup()
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{
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@ -78,55 +88,56 @@ void setup()
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void loop()
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{
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// Set mode from switch
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(PIND & B00000010) ? mode = CD32 : mode = TwoButton;
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// Get current time
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microsNow = micros();
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// Read X and Y axes
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axes = ~(PIND & B00011101);
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switch(mode)
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// See if enough time has passed since last button read
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if(microsNow > microsButtons+BUTTON_READ_DELAY)
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{
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// Two button mode
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case TwoButton:
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// Set pin 6 (clock, PD7) and pin 5 (latch, PF7) as output low
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PORTD &= ~B10000000; // low to disable internal pull-up (will become low when set as output)
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DDRD |= B10000000; // output
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PORTF &= ~B10000000; // low to disable internal pull-up (will become low when set as output)
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DDRF |= B10000000; // output
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delayMicroseconds(40);
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// Clear buttons
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buttons = 0;
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// Read buttons
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(PINF & B01000000) ? buttons &= ~B00000010 : buttons |= B00000010; // Blue (2)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00000001 : buttons |= B00000001; // Red (1)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00001000 : buttons |= B00001000; // Yellow (4)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00000100 : buttons |= B00000100; // Green (3)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00100000 : buttons |= B00100000; // RTrig (6)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00010000 : buttons |= B00010000; // LTrig (5)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B01000000 : buttons |= B01000000; // Play (7)
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sendClock();
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(PINF & B01000000) ? detection |= B00000001 : detection &= ~B00000001; // First detection bit (should be 1)
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sendClock();
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(PINF & B01000000) ? detection |= B00000010 : detection &= ~B00000010; // Second detection bit (should be 0)
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// Set pin 5 (latch, PF7) and pin 6 (clock, PD7) as input with pull-ups
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DDRF &= ~B10000000; // input
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PORTF |= B10000000; // high to enable internal pull-up
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DDRD &= ~B10000000; // input
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PORTD |= B10000000; // high to enable internal pull-up
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delayMicroseconds(40);
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// Was a CD32 gamepad detected? If not, read button 1 and 2 "normally".
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if(detection != B0000001)
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buttons = ~( ((PIND & B10000000) >> 7) | ((PINF & B01000000) >> 5) | B11111100 );
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break;
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// CD32 button mode
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case CD32:
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// Set pin 6 (clock, PD7) and pin 5 (latch, PF7) as output low
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PORTD &= ~B10000000; // low to disable internal pull-up (will become low when set as output)
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DDRD |= B10000000; // output
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PORTF &= ~B10000000; // low to disable internal pull-up (will become low when set as output)
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DDRF |= B10000000; // output
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delayMicroseconds(40);
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// Clear buttons
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buttons = 0;
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// Read buttons
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(PINF & B01000000) ? buttons &= ~B00000010 : buttons |= B00000010; // Blue (2)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00000001 : buttons |= B00000001; // Red (1)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00001000 : buttons |= B00001000; // Yellow (4)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00000100 : buttons |= B00000100; // Green (3)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00100000 : buttons |= B00100000; // RTrig (6)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B00010000 : buttons |= B00010000; // LTrig (5)
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sendClock();
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(PINF & B01000000) ? buttons &= ~B01000000 : buttons |= B01000000; // Play (7)
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// Set pin 5 (latch, PF7) and pin 6 (clock, PD7) as input with pull-ups
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DDRF &= ~B10000000; // input
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PORTF |= B10000000; // high to enable internal pull-up
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DDRD &= ~B10000000; // input
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PORTD |= B10000000; // high to enable internal pull-up
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delayMicroseconds(40);
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break;
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microsButtons = microsNow+400;
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}
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// Has any buttons changed state?
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@ -146,6 +157,7 @@ void loop()
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usbUpdate = true;
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}
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// Update USB data if necessary
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if(usbUpdate)
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{
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Gamepad.send();
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@ -156,8 +168,8 @@ void loop()
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void sendClock()
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{
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// Send a clock pulse to pin 6 and wait
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PORTD |= B10000000;
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PORTD |= B10000000; // Enable pull-up
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delayMicroseconds(10);
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PORTD &= ~B10000000;
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PORTD &= ~B10000000; // Disable pull-up
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delayMicroseconds(40);
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}
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@ -143,3 +143,8 @@ void Gamepad_::send()
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{
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USB_Send(pluggedEndpoint | TRANSFER_RELEASE, &_GamepadReport, sizeof(GamepadReport));
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}
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uint8_t Gamepad_::getShortName(char *name)
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{
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return 0;
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}
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@ -66,6 +66,7 @@ class Gamepad_ : public PluggableUSBModule
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protected:
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int getInterface(uint8_t* interfaceCount);
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int getDescriptor(USBSetup& setup);
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uint8_t getShortName(char *name);
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bool setup(USBSetup& setup);
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uint8_t epType[1];
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16
CD32ControllerUSB/README.md
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16
CD32ControllerUSB/README.md
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@ -0,0 +1,16 @@
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# DaemonBite-CD32-USB
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## Introduction
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With this simple to build adapter you can connect Amiga CD32 gamepads and Commodore/Amiga/Atari joysticks to a PC, Raspberry PI, MiSTer FPGA etc. The Arduino Pro Micro has very low lag when configured as a USB gamepad and it is plug n' play once it has been programmed.
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## Parts you need
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- Arduino Pro Micro (ATMega32U4)
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- Male end of Mega Drive controller extension (or DSUB 9Pin Male connector and some wires)
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- 220Ω resistor
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- Heat shrink tube (Ø ~20mm)
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- Micro USB cable
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## Wiring
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## License
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This project is licensed under the GNU General Public License v3.0.
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BIN
CD32ControllerUSB/images/cd32-usb-adapter-wiring.png
Normal file
BIN
CD32ControllerUSB/images/cd32-usb-adapter-wiring.png
Normal file
Binary file not shown.
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After Width: | Height: | Size: 296 KiB |
@ -143,3 +143,8 @@ void Gamepad_::send()
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{
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USB_Send(pluggedEndpoint | TRANSFER_RELEASE, &_GamepadReport, sizeof(GamepadReport));
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}
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uint8_t Gamepad_::getShortName(char *name)
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{
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return 0;
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}
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@ -29,12 +29,6 @@
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#include <Arduino.h>
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#include "HID.h"
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// NOTE: To make this work on the MiSTer (or possibly other Linux distros),
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// you need to edit USBDesc.h like follows. Change:
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// #define ISERIAL 3
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// to
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// #define ISERIAL 0
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// The numbers after colon are bit fields, meaning how many bits the field uses.
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// Remove those if there are problems
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typedef struct {
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@ -66,6 +60,7 @@ class Gamepad_ : public PluggableUSBModule
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protected:
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int getInterface(uint8_t* interfaceCount);
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int getDescriptor(USBSetup& setup);
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uint8_t getShortName(char *name);
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bool setup(USBSetup& setup);
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uint8_t epType[1];
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@ -143,3 +143,8 @@ void Gamepad_::send()
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{
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USB_Send(pluggedEndpoint | TRANSFER_RELEASE, &_GamepadReport, sizeof(GamepadReport));
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}
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uint8_t Gamepad_::getShortName(char *name)
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{
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return 0;
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}
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@ -29,12 +29,6 @@
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#include <Arduino.h>
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#include "HID.h"
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// NOTE: To make this work on the MiSTer (or possibly other Linux distros),
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// you need to edit USBDesc.h like follows. Change:
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// #define ISERIAL 3
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// to
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// #define ISERIAL 0
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// The numbers after colon are bit fields, meaning how many bits the field uses.
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// Remove those if there are problems
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typedef struct {
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@ -66,6 +60,7 @@ class Gamepad_ : public PluggableUSBModule
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protected:
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int getInterface(uint8_t* interfaceCount);
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int getDescriptor(USBSetup& setup);
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uint8_t getShortName(char *name);
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bool setup(USBSetup& setup);
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uint8_t epType[1];
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@ -21,12 +21,6 @@
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*
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*/
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// NOTE: To make this work on the MiSTer (or possibly other Linux distros),
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// you need to edit USBDesc.h like follows. Change:
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// #define ISERIAL 3
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// to
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// #define ISERIAL 0
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#include "SegaControllers32U4.h"
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#include "Gamepad.h"
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