MickGyver
2 years ago
15 changed files with 546 additions and 134 deletions
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/* Gamepad.cpp
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*
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* Based on the advanced HID library for Arduino:
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* https://github.com/NicoHood/HID
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* Copyright (c) 2014-2015 NicoHood |
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*
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* Copyright (c) 2020 Mikael Norrgård <http://daemonbite.com>
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* |
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* GNU GENERAL PUBLIC LICENSE |
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* Version 3, 29 June 2007 |
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*
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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*
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/ |
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#include "Gamepad.h" |
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static const uint8_t _hidReportDescriptor[] PROGMEM = { |
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0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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0x09, 0x04, // USAGE (Joystick)
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0xa1, 0x01, // COLLECTION (Application)
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0xa1, 0x00, // COLLECTION (Physical)
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0x05, 0x09, // USAGE_PAGE (Button)
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0x19, 0x01, // USAGE_MINIMUM (Button 1)
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0x29, 0x0c, // USAGE_MAXIMUM (Button 12)
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0x15, 0x00, // LOGICAL_MINIMUM (0)
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0x25, 0x01, // LOGICAL_MAXIMUM (1)
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0x95, 0x0c, // REPORT_COUNT (12)
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0x75, 0x01, // REPORT_SIZE (1)
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0x81, 0x02, // INPUT (Data,Var,Abs)
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0x95, 0x01, // REPORT_COUNT (1) ; pad out the bits into a number divisible by 8
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0x75, 0x04, // REPORT_SIZE (4)
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0x81, 0x03, // INPUT (Const,Var,Abs)
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0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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0x09, 0x01, // USAGE (pointer)
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0xa1, 0x00, // COLLECTION (Physical)
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0x09, 0x30, // USAGE (X)
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0x09, 0x31, // USAGE (Y)
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0x15, 0xff, // LOGICAL_MINIMUM (-1)
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0x25, 0x01, // LOGICAL_MAXIMUM (1)
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0x95, 0x02, // REPORT_COUNT (2)
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0x75, 0x08, // REPORT_SIZE (8)
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0x81, 0x02, // INPUT (Data,Var,Abs)
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0xc0, // END_COLLECTION
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0xc0, // END_COLLECTION
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0xc0, // END_COLLECTION
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}; |
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Gamepad_::Gamepad_(void) : PluggableUSBModule(1, 1, epType), protocol(HID_REPORT_PROTOCOL), idle(1) |
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{ |
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epType[0] = EP_TYPE_INTERRUPT_IN; |
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PluggableUSB().plug(this); |
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} |
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int Gamepad_::getInterface(uint8_t* interfaceCount) |
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{ |
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*interfaceCount += 1; // uses 1
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HIDDescriptor hidInterface = { |
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D_INTERFACE(pluggedInterface, 1, USB_DEVICE_CLASS_HUMAN_INTERFACE, HID_SUBCLASS_NONE, HID_PROTOCOL_NONE), |
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D_HIDREPORT(sizeof(_hidReportDescriptor)), |
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D_ENDPOINT(USB_ENDPOINT_IN(pluggedEndpoint), USB_ENDPOINT_TYPE_INTERRUPT, USB_EP_SIZE, 0x01) |
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}; |
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return USB_SendControl(0, &hidInterface, sizeof(hidInterface)); |
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} |
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int Gamepad_::getDescriptor(USBSetup& setup) |
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{ |
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// Check if this is a HID Class Descriptor request
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if (setup.bmRequestType != REQUEST_DEVICETOHOST_STANDARD_INTERFACE) { return 0; } |
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if (setup.wValueH != HID_REPORT_DESCRIPTOR_TYPE) { return 0; } |
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// In a HID Class Descriptor wIndex cointains the interface number
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if (setup.wIndex != pluggedInterface) { return 0; } |
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// Reset the protocol on reenumeration. Normally the host should not assume the state of the protocol
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// due to the USB specs, but Windows and Linux just assumes its in report mode.
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protocol = HID_REPORT_PROTOCOL; |
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return USB_SendControl(TRANSFER_PGM, _hidReportDescriptor, sizeof(_hidReportDescriptor)); |
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} |
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bool Gamepad_::setup(USBSetup& setup) |
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{ |
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if (pluggedInterface != setup.wIndex) { |
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return false; |
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} |
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uint8_t request = setup.bRequest; |
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uint8_t requestType = setup.bmRequestType; |
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if (requestType == REQUEST_DEVICETOHOST_CLASS_INTERFACE) |
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{ |
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if (request == HID_GET_REPORT) { |
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// TODO: HID_GetReport();
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return true; |
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} |
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if (request == HID_GET_PROTOCOL) { |
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// TODO: Send8(protocol);
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return true; |
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} |
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} |
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if (requestType == REQUEST_HOSTTODEVICE_CLASS_INTERFACE) |
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{ |
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if (request == HID_SET_PROTOCOL) { |
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protocol = setup.wValueL; |
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return true; |
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} |
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if (request == HID_SET_IDLE) { |
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idle = setup.wValueL; |
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return true; |
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} |
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if (request == HID_SET_REPORT) |
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{ |
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} |
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} |
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return false; |
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} |
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void Gamepad_::reset() |
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{ |
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_GamepadReport.X = 0; |
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_GamepadReport.Y = 0; |
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_GamepadReport.buttons = 0; |
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this->send(); |
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} |
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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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if(!next)
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{ |
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strcpy(name, gp_serial); |
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return strlen(name); |
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} |
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return 0; |
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} |
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@ -0,0 +1,60 @@
@@ -0,0 +1,60 @@
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/* Gamepad.h
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*
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* Based on the advanced HID library for Arduino:
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* https://github.com/NicoHood/HID
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* Copyright (c) 2014-2015 NicoHood |
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*
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* Copyright (c) 2020 Mikael Norrgård <http://daemonbite.com>
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* |
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* GNU GENERAL PUBLIC LICENSE |
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* Version 3, 29 June 2007 |
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*
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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*
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/ |
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#pragma once |
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#include "HID.h" |
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extern const char* gp_serial; |
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typedef struct { |
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uint16_t buttons : 12; |
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int8_t X; |
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int8_t Y;
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} GamepadReport; |
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class Gamepad_ : public PluggableUSBModule |
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{
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private: |
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uint8_t reportId; |
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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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uint8_t protocol; |
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uint8_t idle; |
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public: |
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GamepadReport _GamepadReport; |
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Gamepad_(void); |
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void reset(void); |
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void send(); |
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}; |
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@ -0,0 +1,169 @@
@@ -0,0 +1,169 @@
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/* NeoGeo Controller to USB
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* Author: Mikael Norrgård <mick@daemonbite.com> |
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* |
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* Copyright (c) 2020 Mikael Norrgård <http://daemonbite.com>
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*
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* GNU GENERAL PUBLIC LICENSE |
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* Version 3, 29 June 2007 |
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*
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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*
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/ |
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#include "Gamepad.h" |
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#define DEBOUNCE 0 // 1=Diddly-squat-Delay-Debouncing™ activated, 0=Debounce deactivated
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#define DEBOUNCE_TIME 10 // Debounce time in milliseconds
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//#define DEBUG // Enables debugging (sends debug data to usb serial)
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const char *gp_serial = "NeoGeo to USB"; |
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Gamepad_ Gamepad; // Set up USB HID gamepad
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bool usbUpdate = false; // Should gamepad data be sent to USB?
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bool debounce = DEBOUNCE; // Debounce?
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uint8_t pin; // Used in for loops
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uint32_t millisNow = 0; // Used for Diddly-squat-Delay-Debouncing™
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uint8_t axesDirect = 0x0f; |
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uint8_t axes = 0x0f; |
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uint8_t axesPrev = 0x0f; |
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uint8_t axesBits[4] = {0x10,0x20,0x40,0x80}; |
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uint32_t axesMillis[4]; |
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uint16_t buttonsDirect = 0; |
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uint16_t buttons = 0; |
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uint16_t buttonsPrev = 0; |
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uint16_t buttonsBits[12] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x100,0x200,0x400,0x800}; |
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uint32_t buttonsMillis[12]; |
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#ifdef DEBUG |
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char buf[16]; |
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uint32_t millisSent = 0; |
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#endif |
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void setup()
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{ |
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// Axes
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DDRF &= ~B11110000; // Set A0-A3 as inputs
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PORTF |= B11110000; // Enable internal pull-up resistors
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// Buttons
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DDRD &= ~B10011111; // Set PD0-PD4 and PD7 as inputs
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PORTD |= B10011111; // Enable internal pull-up resistors
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DDRB &= ~B01111110; // Set PB1-PB6 as inputs
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PORTB |= B01111110; // Enable internal pull-up resistors
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// Debounce selector switch (currently disabled)
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DDRE &= ~B01000000; // Pin 7 as input
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PORTE |= B01000000; // Enable internal pull-up resistor
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// Initialize debouncing timestamps
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for(pin=0; pin<4; pin++) |
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axesMillis[pin]=0; |
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for(pin=0; pin<12; pin++)
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buttonsMillis[pin]=0; |
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#ifdef DEBUG |
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Serial.begin(115200); |
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#endif |
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} |
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void loop()
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{ |
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// Get current time, the millis() function should take about 2µs to complete
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millisNow = millis(); |
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for(uint8_t i=0; i<10; i++) // One iteration (when debounce is enabled) takes approximately 35µs to complete, so we don't need to check the time between every iteration
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{ |
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// Read axis and button inputs (bitwise NOT results in a 1 when button/axis pressed)
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axesDirect = ~(PINF & B11110000); |
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buttonsDirect = ~((PIND & B00011111) | ((PIND & B10000000) << 4) | ((PINB & B01111110) << 4)); |
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if(debounce) |
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{ |
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// Debounce axes
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for(pin=0; pin<4; pin++) |
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{ |
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// Check if the current pin state is different to the stored state and that enough time has passed since last change
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if((axesDirect & axesBits[pin]) != (axes & axesBits[pin]) && (millisNow - axesMillis[pin]) > DEBOUNCE_TIME) |
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{ |
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// Toggle the pin, we can safely do this because we know the current state is different to the stored state
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axes ^= axesBits[pin]; |
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// Update the timestamp for the pin
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axesMillis[pin] = millisNow; |
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} |
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} |
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// Debounce buttons
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for(pin=0; pin<12; pin++) |
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{ |
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// Check if the current pin state is different to the stored state and that enough time has passed since last change
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if((buttonsDirect & buttonsBits[pin]) != (buttons & buttonsBits[pin]) && (millisNow - buttonsMillis[pin]) > DEBOUNCE_TIME) |
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{ |
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// Toggle the pin, we can safely do this because we know the current state is different to the stored state
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buttons ^= buttonsBits[pin]; |
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// Update the timestamp for the pin
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buttonsMillis[pin] = millisNow; |
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} |
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} |
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} |
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else |
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{ |
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axes = axesDirect; |
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buttons = buttonsDirect; |
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} |
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// Has axis inputs changed?
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if(axes != axesPrev) |
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{ |
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// UP + DOWN = UP, SOCD (Simultaneous Opposite Cardinal Directions) Cleaner
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if(axes & B10000000) |
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Gamepad._GamepadReport.Y = -1; |
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else if(axes & B01000000) |
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Gamepad._GamepadReport.Y = 1; |
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else |
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Gamepad._GamepadReport.Y = 0; |
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// UP + DOWN = NEUTRAL
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//Gamepad._GamepadReport.Y = ((axes & B01000000)>>6) - ((axes & B10000000)>>7);
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// LEFT + RIGHT = NEUTRAL
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Gamepad._GamepadReport.X = ((axes & B00010000)>>4) - ((axes & B00100000)>>5); |
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axesPrev = axes; |
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usbUpdate = true; |
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} |
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// Has button inputs changed?
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if(buttons != buttonsPrev) |
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{ |
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Gamepad._GamepadReport.buttons = buttons; |
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buttonsPrev = buttons; |
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usbUpdate = true; |
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} |
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// Should gamepad data be sent to USB?
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if(usbUpdate) |
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{ |
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Gamepad.send(); |
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usbUpdate = false; |
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#ifdef DEBUG |
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sprintf(buf, "%06lu: %d%d%d%d", millisNow-millisSent, ((axes & 0x10)>>4), ((axes & 0x20)>>5), ((axes & 0x40)>>6), ((axes & 0x80)>>7) ); |
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Serial.print(buf); |
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sprintf(buf, " %d%d%d%d", (buttons & 0x01), ((buttons & 0x02)>>1), ((buttons & 0x04)>>2), ((buttons & 0x08)>>3) ); |
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Serial.println(buf); |
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millisSent = millisNow; |
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#endif |
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} |
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} |
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} |
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