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Automatic NES/SNES controller detection.

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MickGyver 2020-04-17 18:54:01 +03:00
parent cb87425b15
commit 8afc5eb909
1 changed files with 17 additions and 32 deletions
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49
SNESControllersUSB/SNESControllersUSB.ino
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@ -30,9 +30,6 @@ const char *gp_serial = "NES/SNES to USB";
#define GAMEPAD_COUNT 2 // NOTE: No more than TWO gamepads are possible at the moment due to a USB HID issue.
#define GAMEPAD_COUNT_MAX 4 // NOTE: For some reason, can't have more than two gamepads without serial breaking. Can someone figure out why?
// (It has something to do with how Arduino handles HID devices)
#define SNES 0
#define NES 1
#define GPTYPE NES // NOTE: Set gamepad type here (NES or SNES)! :)
#define BUTTON_READ_DELAY 300 // Button read delay in µs
#define UP 0x01
@ -52,8 +49,8 @@ const char *gp_serial = "NES/SNES to USB";
// CUP (CLOCK) 3 (PD0, All gamepads)
// D1 (GP1: DATA) A0 (PF7, Gamepad 1)
// D1 (GP2: DATA) A1 (PF6, Gamepad 2)
// D1 (GP3: DATA) A2 (PF5, Gamepad 3)
// D1 (GP4: DATA) A3 (PF4, Gamepad 4)
// D1 (GP3: DATA) A2 (PF5, Gamepad 3, not currently used)
// D1 (GP4: DATA) A3 (PF4, Gamepad 4, not currently used)
// Set up USB HID gamepads
Gamepad_ Gamepad[GAMEPAD_COUNT];
@ -62,15 +59,12 @@ Gamepad_ Gamepad[GAMEPAD_COUNT];
uint32_t buttons[GAMEPAD_COUNT_MAX] = {0,0,0,0};
uint32_t buttonsPrev[GAMEPAD_COUNT_MAX] = {0,0,0,0};
uint8_t gpBit[GAMEPAD_COUNT_MAX] = {B10000000,B01000000,B00100000,B00010000};
uint32_t btnBitsSnes[32] = {0x10,0x40,0x400,0x800,UP,DOWN,LEFT,RIGHT,0x20,0x80,0x100,0x200, // Standard SNES controller
0x10000000,0x20000000,0x40000000,0x80000000,0x1000,0x2000,0x4000,0x8000, // NTT Data Keypad (NDK10)
0x10000,0x20000,0x40000,0x80000,0x100000,0x200000,0x400000,0x800000,
0x1000000,0x2000000,0x4000000,0x8000000};
uint32_t btnBitsNes[8] = {0x20,0x10,0x400,0x800,UP,DOWN,LEFT,RIGHT};
uint32_t *btnBits;
uint32_t btnBits[32] = {0x10,0x40,0x400,0x800,UP,DOWN,LEFT,RIGHT,0x20,0x80,0x100,0x200, // Standard SNES controller
0x10000000,0x20000000,0x40000000,0x80000000,0x1000,0x2000,0x4000,0x8000, // NTT Data Keypad (NDK10)
0x10000,0x20000,0x40000,0x80000,0x100000,0x200000,0x400000,0x800000,
0x1000000,0x2000000,0x4000000,0x8000000};
uint8_t gp = 0;
uint8_t gpType = GPTYPE;
uint8_t buttonCount = 0;
uint8_t buttonCount = 32;
// Timing
long microsNow = 0;
@ -85,15 +79,6 @@ void setup()
// Setup data pins (A0-A3 or PF7-PF4)
DDRF &= ~B11110000; // inputs
PORTF |= B11110000; // enable internal pull-ups
if(gpType == SNES) {
buttonCount = 32;
btnBits = btnBitsSnes;
}
else {
buttonCount = 8;
btnBits = btnBitsNes;
}
}
void loop()
@ -110,22 +95,22 @@ void loop()
for(uint8_t btn=0; btn<buttonCount; btn++)
{
for(gp=0; gp<GAMEPAD_COUNT; gp++)
{
(PINF & gpBit[gp]) ? buttons[gp] &= ~btnBits[btn] : buttons[gp] |= btnBits[btn];
}
sendClock();
}
// Check for NTT Data Keypad
if(gpType == SNES)
// Check gamepad type
for(gp=0; gp<GAMEPAD_COUNT; gp++)
{
for(gp=0; gp<GAMEPAD_COUNT; gp++)
{
if(buttons[gp] & NTT_CONTROL_BIT)
buttons[gp] &= 0x3FFFFFF;
else
buttons[gp] &= 0xFFF;
if((buttons[gp] & 0xF3A0) == 0xF3A0) { // NES
bitWrite(buttons[gp], 5, bitRead(buttons[gp], 4));
bitWrite(buttons[gp], 4, bitRead(buttons[gp], 6));
buttons[gp] &= 0xC3F;
}
else if(buttons[gp] & NTT_CONTROL_BIT) // SNES NTT Data Keypad
buttons[gp] &= 0x3FFFFFF;
else // SNES Gamepad
buttons[gp] &= 0xFFF;
}
microsButtons = microsNow+100;