MiSTer FPGAコレコビジョンコアでNTT DATAキーパッドを使いたい！ github.com
まずはスーパーファミコンNTT DATAキーパッドをUSB化する基板を選びます。 www.ebay.com
Sparkfun Pro Microが載っているのでファームウェアをカスタマイズできそうです。
デフォルトのファームウェアでは、スーパーファミコンのボタンしか反応しなかったので、以下のものに書き換えました。 github.com
またMicro USBが使いずらいのでUSB CのPro Microに置き換えました。
Pro Micro 5V/16MHz/USB-C(互換品)｜TALPKEYBOARD – TALPKEYBOARD SHOP
デフォルトではコントローラーは１つしか認識しないので、２つつなぐために若干修正しました。
/* DaemonBite (S)NES Controllers to USB Adapter with NTT Datapad support * Author: Mikael Norrgård <mick@daemonbite.com> * * Copyright (c) 2020 Mikael Norrgård <http://daemonbite.com> * * GNU GENERAL PUBLIC LICENSE * Version 3, 29 June 2007 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. * */ #include "Gamepad.h" // ATT: 20 chars max (including NULL at the end) according to Arduino source code. // Additionally serial number is used to differentiate arduino projects to have different button maps! const char *gp_serial = "NES/SNES to USB"; //#define DEBUG #define GAMEPAD_COUNT 2 // NOTE: To have more than 2 two gamepads you need to disable the CDC of the Arduino. #define GAMEPAD_COUNT_MAX 4 #define BUTTON_READ_DELAY 20 // Delay between button reads in µs #define CYCLES_LATCH 128 // 12µs according to specs (8 seems to work fine) (1 cycle @ 16MHz takes 62.5ns so 62.5ns * 128 = 8000ns = 8µs) #define CYCLES_CLOCK 64 // 6µs according to specs (4 seems to work fine) #define CYCLES_PAUSE 64 // 6µs according to specs (4 seems to work fine) #define UP 0x01 #define DOWN 0x02 #define LEFT 0x04 #define RIGHT 0x08 #define NTT_CONTROL_BIT 0x20000000 #define DELAY_CYCLES(n) __builtin_avr_delay_cycles(n) // Wire it all up according to the following table: // // NES SNES Arduino Pro Micro // -------------------------------------- // VCC VCC (All gamepads) // GND GND (All gamepads) // OUT0 (LATCH) 2 (PD1, All gamepads) // 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, not currently used) // D1 (GP4: DATA) A3 (PF4, Gamepad 4, not currently used) enum ControllerType { NONE, NES, SNES, NTT }; // Set up USB HID gamepads Gamepad_ Gamepad[GAMEPAD_COUNT]; // Controllers 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}; ControllerType controllerType[GAMEPAD_COUNT_MAX] = {NONE,NONE,NONE,NONE}; 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 buttonCount = 32; // Timing uint32_t microsButtons = 0; #ifdef DEBUG uint32_t microsStart = 0; uint32_t microsEnd = 0; uint8_t counter = 0; #endif void setup() { // Setup latch and clock pins (2,3 or PD1, PD0) DDRD |= B00000011; // output PORTD &= ~B00000011; // low // Setup data pins A0-A3 (PF7-PF4) DDRF &= ~B11110000; // inputs PORTF |= B11110000; // enable internal pull-ups DDRC &= ~B01000000; // input PORTC |= B01000000; // enable internal pull-up #ifdef DEBUG Serial.begin(115200); delay(4000); #endif delay(500); detectControllerTypes(); } void loop() { while(1) { // See if enough time has passed since last button read if((micros() - microsButtons) > BUTTON_READ_DELAY) { #ifdef DEBUG microsStart = micros(); #endif // Pulse latch sendLatch(); 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 gamepad type for(gp=0; gp<GAMEPAD_COUNT; gp++) { if(controllerType[gp] == NES) { // NES bitWrite(buttons[gp], 5, bitRead(buttons[gp], 4)); bitWrite(buttons[gp], 4, bitRead(buttons[gp], 6)); buttons[gp] &= 0xC3F; } else if(controllerType[gp] == NTT) // SNES NTT Data Keypad buttons[gp] &= 0x3FFFFFF; else // SNES Gamepad buttons[gp] &= 0xFFF; } for(gp=0; gp<GAMEPAD_COUNT; gp++) { // Has any buttons changed state? if (buttons[gp] != buttonsPrev[gp]) { Gamepad[gp]._GamepadReport.buttons = (buttons[gp] >> 4); // First 4 bits are the axes Gamepad[gp]._GamepadReport.Y = ((buttons[gp] & DOWN) >> 1) - (buttons[gp] & UP); Gamepad[gp]._GamepadReport.X = ((buttons[gp] & RIGHT) >> 3) - ((buttons[gp] & LEFT) >> 2); buttonsPrev[gp] = buttons[gp]; Gamepad[gp].send(); } } microsButtons = micros(); #ifdef DEBUG microsEnd = micros(); if(counter < 20) { Serial.println(microsEnd-microsStart); counter++; } #endif } }} void detectControllerTypes() { uint8_t buttonCountNew = 0; // Read the controllers a few times to detect controller type for(uint8_t i=0; i<4; i++) { // Pulse latch sendLatch(); // Read all buttons 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 controller types and set buttonCount to max needed for(gp=0; gp<GAMEPAD_COUNT; gp++) { if((buttons[gp] & 0xF3A0) == 0xF3A0) { // NES if(controllerType[gp] != SNES && controllerType[gp] != NTT) controllerType[gp] = NES; if(buttonCountNew < 8) buttonCountNew = 8; } else if(buttons[gp] & NTT_CONTROL_BIT) { // SNES NTT Data Keypad controllerType[gp] = NTT; buttonCountNew = 32; } else { // SNES Gamepad // if(controllerType[gp] != NTT) // controllerType[gp] = SNES; // if(buttonCountNew < 12) // buttonCountNew = 12; controllerType[gp] = NTT; buttonCountNew = 32; } } } #ifdef DEBUG for(gp=0; gp<GAMEPAD_COUNT; gp++) { Serial.print("Controller "); Serial.print(gp+1); Serial.print(": "); Serial.println(buttons[gp]); } #endif // Set updated button count to avoid unneccesary button reads (for simpler controller types) buttonCount = buttonCountNew; } void sendLatch() { // Send a latch pulse to (S)NES controller(s) PORTD |= B00000010; // Set HIGH DELAY_CYCLES(CYCLES_LATCH); PORTD &= ~B00000010; // Set LOW DELAY_CYCLES(CYCLES_PAUSE); } void sendClock() { // Send a clock pulse to (S)NES controller(s) PORTD |= B10000001; // Set HIGH DELAY_CYCLES(CYCLES_CLOCK); PORTD &= ~B10000001; // Set LOW DELAY_CYCLES(CYCLES_PAUSE); }
